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DelayAtlas

Every page on the site

Compare routes, airports and airlines

Type a route, a city or an airline. 2,978 routes, 60 airports and 14 carriers have pages of their own; another 1,025 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 Lines1,039,51781.1%71 min1.74%B
Envoy Air (regional)320,36281.0%70 min2.19%B
Hawaiian Airlines26,17580.8%57 min0.87%B+
Alaska Airlines309,84479.7%52 min1.20%B
United Airlines830,82578.8%73 min1.02%B
SkyWest Airlines (regional)855,40678.7%88 min1.79%B
Republic Airways (regional)364,45278.1%74 min4.55%B−
Southwest Airlines1,391,79475.7%53 min0.92%B+
American Airlines988,89274.7%85 min2.14%C
Allegiant Air126,00573.9%88 min0.68%C+
PSA Airlines (regional)242,97973.5%96 min4.80%C−
Frontier Airlines213,02272.7%84 min2.05%C
Spirit Airlines99,98172.0%75 min4.52%C−
JetBlue Airways240,61571.3%77 min3.56%C−

Airports

The 60 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 2978 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.