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DelayAtlas

Test data. These figures are generated for layout checking and did not come from the BTS. Do not cite them.

Every page on the site

Compare routes, airports and airlines

Type a route, a city or an airline. 250 routes, 50 airports and 20 carriers have pages of their own; another 2,362 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
Hawaiian Airlines422,18886.7%43 min0.54%A+
Delta Air Lines496,98983.0%46 min0.72%B+
Alaska Airlines536,75780.1%49 min1.00%B
Endeavor Air (regional)569,05579.5%50 min2.39%B
Horizon Air (regional)612,73178.4%50 min2.06%B
American Airlines685,38477.7%51 min2.23%B
United Airlines799,08077.5%49 min1.76%B
Republic Airways (regional)646,46877.4%51 min2.60%B
Southwest Airlines641,73676.8%51 min1.78%B
SkyWest Airlines (regional)448,12675.9%52 min2.74%B
Sun Country Airlines486,81475.6%52 min1.35%B
Allegiant Air514,18674.5%53 min1.53%C
Envoy Air (regional)447,78274.5%53 min3.39%C−
Breeze Airways515,82073.8%54 min2.09%C
PSA Airlines (regional)743,65873.2%55 min3.55%C−
Air Wisconsin (regional)552,29373.0%54 min3.11%C−
Mesa Airlines (regional)523,44272.3%57 min3.88%C−
Spirit Airlines403,78371.2%56 min2.99%C
JetBlue Airways639,19169.8%57 min2.29%C
Frontier Airlines586,71969.3%59 min2.25%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 250 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, June 2025 to May 2026. Updated monthly. How this data is collected.