On-time performance
Which airlines and airports are actually on time?
On-time arrival rates for the major US airlines and the 30 busiest US airports, drawn from the US Department of Transportation. A flight is “on time” if it arrives at the gate fewer than 15 minutes after its scheduled time. Choose a view, sort the column you care about.
System-wide status
By airline
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Source: BTS Annual Airline On-Time Rankings, Marketing Carrier and Operating Carrier sheets. “On time” means arriving fewer than 15 minutes after the scheduled gate arrival. The Marketing ranking rolls up branded code-share regional flying (Delta Connection, American Eagle, United Express, Alaska SkyWest, Horizon) into the parent airline's number; the Operating ranking lists the regionals separately. Some regionals (Endeavor, Horizon, Mesa) appear only in certain years — rows render an em-dash for years they did not report.
About these numbers
What “on time” means. A flight counts as on time if it arrives at the destination gate fewer than 15 minutes after its scheduled arrival time, per the standard BTS definition. Cancelled and diverted flights are not counted in either the on-time or the late bucket — they appear in the system-wide cancellation rate at the top of the page.
What is included. The airline ranking comes in two flavors selected by the toggle above the table. The Marketing ranking lists the ten airlines that BTS tracks as marketing carriers — the four mainlines (American, Delta, United, Alaska), the two low-cost airlines (Southwest, JetBlue), the three ultra-low-cost airlines (Spirit, Frontier, Allegiant), and Hawaiian. Each airline's number rolls up its branded code-share regional flying (Delta Connection, American Eagle, United Express, Alaska SkyWest, Horizon) into the parent. The Operating ranking lists the airline that actually flew each segment — the same ten mainlines and ULCCs (with their own-metal-only on-time numbers, slightly lower for the four mainlines that operate regional networks) plus the regional operators (SkyWest, Envoy, Republic, PSA, plus Endeavor, Horizon, and Mesa in years they reported). The airport ranking covers the 30 highest-volume US commercial airports BTS tracks; smaller airports are not in the ranking. Coverage is United States only in v1; Statistics Canada (Canadian airlines and airports) and AFAC (Mexican airports) publish less granular data on different cadences and are deferred.
Data freshness. Per-airline and per-airport rankings come from the BTS annual rankings tables and are re-verified monthly aligned to BTS's release cycle. BTS publishes the most recent full calendar year roughly two months after year-end (CY 2025 was published in March 2026), and publishes year-to-date numbers two-to-three months in arrears (the most recent year-to-date covers data through February 2026). The system-wide status bar at the top of the page reflects the most recent year-to-date totals.
What is intentionally excluded. Per-flight prediction (“will my flight tonight be on time?”) — this page is about historical reliability, not flight-by-flight forecasting. Editorial commentary or rankings beyond what BTS publishes. Per-route data, which BTS does not publish in pre-aggregated form. Tarmac-delay specifics, which the DOT Air Travel Consumer Report covers separately.