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DelayAtlas

Every page on the site

Compare routes, airports and airlines

Type a route, a city or an airline. 1,000 routes, 50 airports and 14 carriers have pages of their own; another 3,019 routes clear the reporting floor and appear as rows inside their airports' pages.

Airlines

Every reporting carrier, ranked

Ranked by on-time rate across their whole domestic network. A national ranking flatters carriers concentrated in easy airspace, so treat this as a starting point and use the route pages for a like-for-like comparison.

US reporting carriers ranked by on-time performance
AirlineFlightsOn timeAvg delayCancelledGrade
Delta Air Lines1,038,57081.6%71 min1.62%B
Hawaiian Airlines40,18781.5%55 min0.73%B+
Envoy Air (regional)315,43580.2%67 min2.30%B
Alaska Airlines293,37279.1%52 min1.28%B
SkyWest Airlines (regional)852,93579.0%88 min1.77%B
United Airlines821,04179.0%72 min1.01%B
Republic Airways (regional)361,48278.5%72 min4.08%B−
Southwest Airlines1,390,63476.6%54 min0.89%B+
PSA Airlines (regional)241,95774.6%94 min4.34%C−
American Airlines986,29774.4%85 min2.29%C
Allegiant Air127,16374.1%88 min0.65%C+
Frontier Airlines205,33273.2%84 min1.85%C
Spirit Airlines134,44373.1%75 min3.68%C−
JetBlue Airways234,46872.7%76 min2.56%C

Airports

The 50 busiest US airports

Ordered by departure volume. The on-time figure covers every carrier operating from that airport, weighted by how much each one flies.

Routes

All 1000 routes with a page

Directional: JFK to LAX and LAX to JFK are separate operations with separate records, and the gap between them is often several points. Sorted by volume.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Updated monthly. How this data is collected.