In 2024, Delta Air Lines and United Airlines were the leading airlines in the U.S., with a domestic market share of 21 percent. That year, American Airlines had the second-largest market share of 20 percent. U.S. airlines' domestic market share The passenger air transportation market is a thriving industry, taking individuals to locations around the globe. American Airlines was the third largest airline in the North America based on operating revenue, reaching nearly 40.5 billion U.S. dollars in 2023. Passenger airlines can face much scrutiny for their passenger satisfaction and comfort. A 2025 North American Airline Satisfaction Study by J.D. Power & Associates listed Southwest Airlines as the best long-haul, closely followed by low-cost carrier JetBlue Airways. United Airlines, Delta Air Lines, American Airlines and Southwest Airlines are the top-ranked airlines based on 2024 domestic market share. Delta operates out of Atlanta, and Hartsfield-Jackson Atlanta International Airport, Delta’s hub, sees the most passenger traffic in the United States. Chicago-headquartered United Airlines is a subsidiary of United Continental Holdings. United has flights to 210 domestic destinations and 120 destinations internationally.

Graph and download economic data for Revenue Passenger Miles for U.S. Air Carrier Domestic and International, Scheduled Passenger Flights (RPMD11) from Jan 2000 to Jul 2025 about flight, miles, passenger, air travel, travel, revenue, domestic, and USA.

In 2023, the annual sales revenue of Korean Air amounted to around **** trillion South Korean won, showing the largest amount of sales among South Korean airlines. It was followed by the other Korean full-service carrier, Asiana Airlines, which made around *** trillion won. Low-cost carrier Jeju Air ranked third with around *** billion won in revenue that year.

Domestic airline revenue varies with changes in domestic travel patterns. Airlines are investing in modern technology and upgrading aircraft to reduce costs. Mainline fleets are expanding aircraft size to carry more passengers per flight, enhancing economies of scale. Major carriers, like Delta Airlines, focused on advancing premium service offerings, while the competitive landscape was further shaped by budget airlines offering low-cost fares. Revenue is expected to expand at a CAGR of 16.5% to $243.8 billion through the end of 2025, including growth of 0.4% in 2025 alone. The double-digit CAGR is attributed to the low comparison base recorded in 2020. Rebounding travel is providing airlines with an opportunity to attract more travelers by offering appealing fare options and continuing to enhance service quality. Easing inflationary pressures and interest rate reductions are improving consumer and business sentiment and driving a rebound in passenger and business travel, supporting growth through 2025. Airlines are capitalizing on this positive momentum, with investments directed toward enhancing customer loyalty programs and expanding their service offerings. Despite facing competitive pressures from low-cost carriers, major airlines are strategically positioning themselves through partnerships and aligning with financial institutions to secure funding. Major airlines continue to seek profit improvements and are investing in sustainable aviation fuel (SAF) to curb their environmental footprint and reduce exposure to jet-fuel cost fluctuations. Ongoing investments into SAF are expected to foreshadow the airline's continuing commitment to prioritizing fuel efficiency and sustainability. The industry is expected to consolidate further, with Big Four airlines maintaining their lead despite intensifying regulatory scrutiny. Airlines will benefit from airport and infrastructure upgrades as unallocated funding from the IIJA capitalizes and projects come online. Easing monetary policy and improving liquidity are expected to support consumption and drive domestic travel, setting the stage for a return to sustained growth. Industry revenue is set to expand by a CAGR of 1.3% to an estimated $260.2 billion through the end of 2030.

At the end of financial year 2023, IndiGo reported around ***** billion Indian rupees in operating revenue. It was followed distantly by Air India, with an operating revenue of *** billion rupees. Previously, Jet Airways dominated the Indian domestic air travel market. After a series of unprofitable years, the airline declared bankruptcy in early 2019.

Graph and download economic data for Domestic Revenue Passenger Miles (RPMs), Scheduled Passenger Flights (RPMD) from Jan 2000 to Jul 2025 about flight, miles, passenger, revenue, domestic, and USA.

Trading conditions have been mixed for the Domestic Airlines industry over the past five years. Government restrictions to combat the pandemic significantly curtailed air travel volumes over the two years through 2020-21, and industry revenue plunged accordingly. Returning to growth in 2021-22, revenue has rapidly recovered ever since to reach close to pre-pandemic levels. Overall, industry revenue is expected to have grown at an annualised 4.7% over the five years through 2024-25 to $17.0 billion. This includes anticipated revenue growth of 0.5% in 2024-25. The COVID-19 pandemic wiped out domestic airlines’ profit margins, causing the industry to suffer losses over the three years through 2021-22. A strong recovery in domestic air travel, combined with capacity constraints, has returned the industry to profitability, but weak consumer confidence over the two years through 2024-25 has started to stall revenue growth. High inflation and rising interest rates have hit consumer confidence, prompting customers to increasingly choose budget airlines over full-fare flights and stifling growth in domestic air travel over the two years through 2024-25. With low-cost carrier Bonza exiting the industry in April 2024 and Rex entering voluntary administration in July 2024, price competition is expected to weaken. However, the Federal Government has stepped in to ensure the survival of Rex, which continues to operate regional flights and is looking to secure a buyer to continue operating. Nonetheless, lower jet fuel prices and easing travel demand have led to steep falls in ticket prices, limiting industrywide revenue growth in 2024-25. Passenger numbers are set to steadily tick upwards as domestic tourism and international travel to Australia strengthen over the coming years, driving the industry's expansion. Issues with competition following Bonza’s exit and the temporary limited operations of Rex will also support ticket prices, helping to boost margins and revenue growth. However, unpredictable geopolitical tensions in oil-rich nations have the potential to hinder the industry's recovery, similarly to how sanctions imposed on Russian oil have sustained elevated oil prices, placing strong upwards pressure on domestic airlines' purchase costs and limiting their profit margins. Industry revenue is forecast to increase at an annualised 2.9% over the five years through 2029-30 to $19.6 billion.

This statistic illustrates the number of domestic revenue passenger miles of U.S. airlines between 2004 and 2021 U.S. airlines recorded over ***** billion revenue passenger miles on domestic flights across the United States in 2021.

In the fiscal year 2023, All Nippon Airways (ANA) earned approximately ***** billion Japanese yen of passenger revenue on domestic flights in Japan, more than any other airline. All Nippon Airways and Japan Airlines dominate the aviation industry in Japan and are principal shareholders of several other domestic airlines.

Graph and download economic data for Revenue and Non-Revenue Passenger-Miles, Domestic Airlines for United States (M03071USM429NNBR) from Jul 1931 to Dec 1941 about air travel, travel, transportation, domestic, and USA.

China Southern Airline: Revenue Passenger Kilometre: Domestic data was reported at 18,245.150 Person-km mn in Mar 2025. This records a decrease from the previous number of 19,716.120 Person-km mn for Feb 2025. China Southern Airline: Revenue Passenger Kilometre: Domestic data is updated monthly, averaging 8,758.150 Person-km mn from Jun 2001 (Median) to Mar 2025, with 286 observations. The data reached an all-time high of 22,978.880 Person-km mn in Aug 2024 and a record low of 333.640 Person-km mn in May 2003. China Southern Airline: Revenue Passenger Kilometre: Domestic data remains active status in CEIC and is reported by China Southern Airlines Company Limited. The data is categorized under China Premium Database’s Transportation and Storage Sector – Table CN.TIC: Air: China Southern Airlines.

Over the five years through 2023, revenue for the airline industry in China has fallen at a CAGR of 10.6% to a total of $49.2 billion. This includes a growth of 53.2% in the current year. The Airlines industry has been affected by COVID-19 for three consecutive years since 2020. Total passenger volumes declined by 37.7% in 2020 to 417.8 million and grew slightly by 5.5% to 440.8 million in 2021. In 2022, passenger volumes declined by 43.2% to 250.2 million.The industry is subject to fierce competition, leading to low-profit margins. The challenges faced in the past five years include travel restrictions caused by COVID-19, the unstable global economy, and high aviation fuel prices, which led to industry losses in 2020, 2021, and 2022. Due to the relaxation of travel restrictions, the airline industry will gradually recover in 2023.Over the five years through 2028, industry revenue is forecast to grow at a CAGR of 11.5% to $84.9 billion. Growth will likely stabilize as air traffic volumes increase steadily and the industry matures gradually. Still, volatile jet fuel prices will remain a significant risk factor for industry operators. ACMR-IBISWorld also anticipates that competition among airlines and profit squeezing will be somewhat alleviated with further industry consolidation. Other notable trends include an increasingly private and foreign presence in the industry and the rapid development of regional airlines in China's second and third-tier cities.

In the fiscal year 2023, American Airlines Group had nearly **** billion U.S. dollars in total passenger revenue. Domestic operations had the largest share in the revenue, amounting to **** billion U.S. dollars.

The Airline Route Profitability Software Market report segments the industry into Software (Fares Management and Pricing, Planning and Scheduling, Revenue Management, Other Software), End-User (Domestic Airlines, International Airlines, Business Charters), and Geography (North America, Europe, Asia-Pacific, Latin America, Middle East and Africa). The report features historical data and five-year forecasts.

China Eastern Airline: Revenue Tonne Kilometre: Domestic data was reported at 1,308.300 Ton-km mn in Mar 2025. This records a decrease from the previous number of 1,350.220 Ton-km mn for Feb 2025. China Eastern Airline: Revenue Tonne Kilometre: Domestic data is updated monthly, averaging 652.222 Ton-km mn from Jul 2002 (Median) to Mar 2025, with 273 observations. The data reached an all-time high of 1,508.170 Ton-km mn in Aug 2024 and a record low of 20.690 Ton-km mn in May 2003. China Eastern Airline: Revenue Tonne Kilometre: Domestic data remains active status in CEIC and is reported by China Eastern Airlines Corporation Limited. The data is categorized under China Premium Database’s Transportation and Storage Sector – Table CN.TIC: Air: China Eastern Airlines.

Over the past five years, Canada’s airline industry has navigated extraordinary volatility, initially prompted by the sharp demand contraction during the COVID-19 pandemic and persistent inflationary headwinds that have pressured household budgets. A defining feature of this period was the innovative adaptation by airlines, which converted passenger aircraft into freighters to offset diminished passenger revenues and address global supply chain disruptions. Despite these efforts, elevated interest rates have limited freight activity and competition from international airlines has constrained airlines’ ability to capitalize fully on rebounds in inbound tourism. Though demand for air travel has recovered, especially for visitors to Canada, revenue growth has normalized after a COVID-driven surge, reaching a five-year compound annual growth rate (CAGR) of 23.1%, with current-year revenue remaining flat at $31.9 billion. Profit margin collapsed to 3.6% of revenue in 2020 from 12.7% in 2019 and has since staged a partial recovery to 8.6% as of 2025. Regulatory liberalization has gradually shifted the landscape, giving rise to new low-cost carriers and intensifying competition, particularly in the wake of regulatory actions halting further consolidation. However, dominant players such as Air Canada have maintained their market position, especially as market concentration increased after recent bankruptcies among discount airlines. As the industry consolidates, these networks have benefited from inbound tourism, even as operational costs remain high. While profit is still below historical norms, the sector continues improving. At the same time, key external drivers, notably robust inbound tourism and the expanding pool of high-income households, have supported the recovery and gradual uptick in industry profit. Looking to the next five years, the outlook for Canada’s airlines is shaped by balanced risks and opportunities. Higher consumer incomes and a potential resurgence in corporate travel will counteract ongoing macroeconomic challenges, including fluctuating oil prices and uncertainty surrounding trade and currency markets. Heightened domestic and global competition will likely limit price increases and restrain profit expansion, despite potential cost savings from lower oil prices. Industry revenue is forecast to drop modestly, with a CAGR of -0.4%, bringing total industry revenue to $31.3 billion by 2030. Profit margin will remain relatively stable, easing only slightly to 8.4% by the end of the outlook period, as airlines adapt to evolving regulatory, economic and consumer landscapes.

Context

Have you taken a flight in the U.S. in the past 15 years? If so, then you are a part of monthly data that the U.S. Department of Transportation's TranStats service makes available on various metrics for 15 U.S. airlines and 30 major U.S airports. Their website unfortunately does not include a method for easily downloading and sharing files. Furthermore, the source is built in ASP.NET, so extracting the data is rather cumbersome. To allow easier community access to this rich source of information, I scraped the metrics for every airline / airport combination and stored them in separate CSV files.

Occasionally, an airline doesn't serve a certain airport, or it didn't serve it for the entire duration that the data collection period covers*. In those cases, the data either doesn't exist or is typically too sparse to be of much use. As such, I've only uploaded complete files for airports that an airline served for the entire uninterrupted duration of the collection period. For these files, there should be 174 time series points for one or more of the nine columns below. I recommend any of the files for American, Delta, or United Airlines for outstanding examples of complete and robust airline data.

* No data for Atlas Air exists, and Virgin America commenced service in 2007, so no folders for either airline are included.

Content

There are 13 airlines that have at least one complete dataset. Each airline's folder includes CSV file(s) for each airport that are complete as defined by the above criteria. I've double-checked the files, but if you find one that violates the criteria, please point it out. The file names have the format "AIRLINE-AIRPORT.csv", where both AIRLINE and AIRPORT are IATA codes. For a full listing of the airlines and airports that the codes correspond to, check out the airline_codes.csv or airport_codes.csv files that are included, or perform a lookup here. Note that the data in each airport file represents metrics for flights that originated at the airport.

Among the 13 airlines in data.zip, there are a total of 161 individual datasets. There are also two special folders included - airlines_all_airports.csv and airports_all_airlines.csv. The first contains datasets for each airline aggregated over all airports, while the second contains datasets for each airport aggregated over all airlines. To preview a sample dataset, check out all_airlines_all_airports.csv, which contains industry-wide data.

Each file includes the following metrics for each month from October 2002 to March 2017:

1. Date (YYYY-MM-DD): All dates are set to the first of the month. The day value is just a placeholder and has no significance.
2. ASM_Domestic: Available Seat-Miles in thousands (000s). Number of domestic flights * Number of seats on each flight
3. ASM_International*: Available Seat-Miles in thousands (000s). Number of international flights * Number of seats on each flight
4. Flights_Domestic
5. Flights_International*
6. Passengers_Domestic
7. Passengers_International*
8. RPM_Domestic: Revenue Passenger-Miles in thousands (000s). Number of domestic flights * Number of paying passengers
9. RPM_International*: Revenue Passenger-Miles in thousands (000s). Number of international flights * Number of paying passengers

* Frequently contains missing values

Acknowledgements

Thanks to the U.S. Department of Transportation for collecting this data every month and making it publicly available to us all.

Source: https://www.transtats.bts.gov/Data_Elements.aspx

Inspiration

The airline / airport datasets are perfect for practicing and/or testing time series forecasting with classic statistical models such as autoregressive integrated moving average (ARIMA), or modern deep learning techniques such as long short-term memory (LSTM) networks. The datasets typically show evidence of trends, seasonality, and noise, so modeling and accurate forecasting can be challenging, but still more tractable than time series problems possessing more stochastic elements, e.g. stocks, currencies, commodities, etc. The source releases new data each month, so feel free to check your models' performances against new data as it comes out. I will update the files here every 3 to 6 months depending on how things go.

A future plan is to build a SQLite database so a vast array of queries can be run against the data. The data in it its current time series format is not conducive for this, so coming up with a workable structure for the tables is the first step towards this goal. If you have any suggestions for how I can improve the data presentation, or anything that you would like me to add, please let me know. Looking forward to seeing the questions that we can answer together!

In the first three quarters of 2024, U.S. airlines generated more than 240 billion U.S. dollars in operating revenue, an increase of nearly seven percent compared to the previous year. Revenue streams Operating revenue is the revenue generated by a company from its primary business activities. In the case of most airlines, we can divide operating revenue into four main types: airfares, ancillary, cargo and other. Airfares is simply the revenue generated from the sale of flights, while cargo is any additional revenue generated from transporting freight or mail in addition to passengers. Ancillary airlines are the additional fees that are sometimes charged to passengers for extra services such as seat allocation, additional baggage, meals and access to an in-flight entertainment system or in-flight Wi-Fi. Ancillary revenue can comprise a significant portion of an airline’s total revenue, especially for low-cost carriers. Finally, other includes revenue from regular non-flight services such as frequent flyer programs or consumer credit cards offered by the airline.

United States - Revenue Passenger Miles for U.S. Air Carrier Domestic, Scheduled Passenger Flights was 66890604.00000 Thous. in July of 2025, according to the United States Federal Reserve. Historically, United States - Revenue Passenger Miles for U.S. Air Carrier Domestic, Scheduled Passenger Flights reached a record high of 67870887.00000 in June of 2024 and a record low of 2543386.00000 in April of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Revenue Passenger Miles for U.S. Air Carrier Domestic, Scheduled Passenger Flights - last updated from the United States Federal Reserve on November of 2025.

According to Cognitive Market Research, the global domestic aviation market size was USD 999142.5 million in 2024. It will expand at a compound annual growth rate (CAGR) of 4.00% from 2024 to 2031.

North America held the major market share for more than 40% of the global revenue with a market size of USD 399657.00 million in 2024 and will grow at a compound annual growth rate (CAGR) of 2.2% from 2024 to 2031.
Europe accounted for a market share of over 30% of the global revenue with a market size of USD 299742.75 million.
Asia Pacific held a market share of around 23% of the global revenue with a market size of USD 229802.78 million in 2024 and will grow at a compound annual growth rate (CAGR) of 6.0% from 2024 to 2031.
Latin America had a market share of more than 5% of the global revenue with a market size of USD 49957.13 million in 2024 and will grow at a compound annual growth rate (CAGR) of 3.4% from 2024 to 2031.
Middle East and Africa had a market share of around 2% of the global revenue and was estimated at a market size of USD 19982.85 million in 2024 and will grow at a compound annual growth rate (CAGR) of 3.7% from 2024 to 2031.
The spiral wing aircraft category is the fastest-growing segment of the domestic aviation industry.

Market Dynamics of Domestic Aviation Market

Key Drivers for Domestic Aviation Market

Rising Demand for Faster and More Convenient Transportation Options Fuels Market Growth

The rising demand for faster and more convenient transportation options continues to fuel growth in the domestic aviation market. Air travel offers unparalleled speed and efficiency compared to other modes of transportation, making it the preferred choice for business and leisure travelers. As urbanization increases and economic conditions improve, more people seek air travel for its ability to save time and enhance connectivity. Furthermore, advancements in aviation technology and the expansion of regional air routes make domestic air travel increasingly accessible. Airlines are also adopting customer-centric services, such as streamlined booking processes and enhanced onboard experiences. These factors collectively contribute to the sustained growth and expansion of the domestic aviation market. For instance, in December 2024, AIAI India advanced the nation’s aerospace capabilities through strategic initiatives and collaborations. By fostering growth and enhancing international competitiveness, it drove innovation, improved manufacturing processes, and developed cutting-edge technologies. Through these efforts, AIAI India actively positioned the country as a major player in the global aerospace industry, creating new opportunities for growth, investment, and collaboration.

Increasing Focus on Sustainability and Fuel Efficiency in Aviation Propels Market Growth

The domestic aviation market is witnessing substantial growth, propelled by an increasing focus on sustainability and fuel efficiency. Airlines are adopting advanced technologies, such as lightweight materials, aerodynamic designs, and fuel-efficient engines, to reduce operational costs and environmental impact. The rising demand for eco-friendly practices has accelerated the development and integration of biofuels and electric aircraft, catering to growing consumer awareness of environmental concerns. Furthermore, regulatory bodies worldwide are implementing stricter emission standards, encouraging airlines to invest in sustainable innovations. Improved fuel efficiency not only lowers emissions but also enhances profitability, making it a crucial factor in market expansion. As a result, sustainability and efficiency are becoming key drivers shaping the future of the domestic aviation market.

Restraint Factor for the Domestic Aviation Market

Infrastructure Limitations in Remote or Underserved Regions Restrict Market Growth

Infrastructure limitations in remote or underserved regions significantly restrict the growth of the domestic aviation market. Many areas lack adequate airport facilities, runways, and essential navigation equipment, making it challenging for airlines to operate efficiently. These limitations increase operational costs and reduce the viability of establishing new routes, particularly in regions with low passenger demand. Furthermore, insufficient infrastructure often leads to delays, safety concerns, and limited service frequency, discouraging travelers from choosing air travel....