Traffic and fare data by airline and route can provide valuable insights into market trends, demand, and competition. By analyzing this data, airlines can optimize their pricing strategies, plan their capacity, and make informed decisions about their route network. The data can also be used for market and competitive analysis, helping airlines identify profitable routes and gain a competitive advantage.
According to initial true O&D level data from FlightBI released this week, total U.S. domestic air travel increased again in June 2025. International travel volumes also saw an uptick. Additional, average airfares barely changed during the same period.
Volume Trend
In June 2025, U.S. domestic passenger traffic rose to 57.7 million, up from 55.6 million in May and 2.6% higher than the 56.2 million recorded in June 2024. International passenger volumes also increased, climbing from 22.3 million in May to 24.5 million in June.
Figure 1: US Domestic and International Air Traffic by Month
Airfare Trend
Airfare trends remained stable in June 2025, with the average gross fare edging up slightly from $224 in May to $225. The average net fare held steady at $193.
Figure 2: US Domestic Average Airfare by Month
Load Factor Trend
In June 2025, both Available Seat Miles (ASM) and Revenue Passenger Miles (RPM) increased month over month. The average load factor for major U.S. airlines rose to 84.5%, though it remained below the 87.1% recorded in June 2024 (see Figure 3).
Figure 3: US Airlines’ Average Load Factor by Month
Month Over Month Comparison
In June 2025, nearly all U.S. airlines experienced an increase in daily domestic traffic compared to May, with the exception of JetBlue (B6). Allegiant Air (G4) led the growth with a 27.2% increase, followed by Frontier Airlines (F9) at 9.3% and Hawaiian Airlines (HA) at 8.9%. JetBlue, on the other hand, saw a 4.2% decline in daily traffic due to flight reductions, particularly on lower-demand days like Tuesdays and Wednesdays, as well as on underperforming routes.
Figure 4: Domestic Air Traffic by Marketing Airlines in May 2025 (Previous) vs. June 2025 (Current)
Similarly, most major airports reported passenger growth in June 2025. Minneapolis (MSP) and Seattle (SEA) saw strong increases of 27.8% and 19.7%, respectively, driven by significant capacity additions from airlines such as Sun Country (SY) and Southwest (WN). In contrast, Phoenix (PHX) and Orlando (MCO) experienced declines of 9.2% and 1.9%.
Figure 5: Domestic Air Traffic by Top Airports in May 2025 (Previous) vs. June 2025 (Current)
Year Over Year Comparison
From June 2024 to June 2025, several airlines reported year-over-year growth, led by Allegiant Air (G4) at 8.4%, United (UA) at 7.7%, and American (AA) at 7.3%. In contrast, Spirit Airlines (NK) recorded the steepest decline, with traffic down 21.7%. Frontier (F9) and JetBlue (B6) also saw year-over-year decreases in daily traffic.
Figure 6: Domestic Air Traffic by Marketing Airlines in June 2025 (Current) vs. June 2024 (Previous)
From June 2024 to June 2025, most major U.S. airports saw increases in domestic traffic. The most notable exception was Newark Airport (EWR), which experienced a 10.8% decline due to FAA-imposed flight caps aimed at reducing operational strain. As a result, some traffic shifted to John F. Kennedy Airport (JFK), which recorded an 11.9% increase. Minneapolis (MSP) and San Francisco (SFO) also posted solid growth of 8.6% and 8.2%, respectively.
Figure 7: Domestic Air Traffic by Top Origin Airport in June 2025 (Current) vs. June 2024 (Previous)
For more detailed information on traffic and fares by route and airline, please contact service@flightbi.com or request a demo of Fligence USOD. They will be able to provide you with customized information to meet your specific needs and requirements.