Most Delayed Airlines in the US: 2026 Ranking
US airlines ranked worst-first by three metrics: on-time arrival rate, cancellation rate, and average delay length when flights run late. Data comes from the US Department of Transportation's Air Travel Consumer Reports, the official source for airline performance statistics. A flight is considered "on time" by DOT if it arrives within 15 minutes of schedule.
| # | Airline | On-Time % | Cancel % | Avg Delay | Context |
|---|---|---|---|---|---|
| 1 | B6JetBlue | 70.1% | 2.1% | 62 min | Concentrated at NYC-area congested airports |
| 2 | F9Frontier | 71.4% | 3.8% | 58 min | ULCC tight schedules, no slack |
| 3 | NKSpirit | 72.0% | 4.1% | 55 min | High load factors, ULCC operating model |
| 4 | G4Allegiant | 73.2% | 2.8% | 52 min | Point-to-point leisure routes, older fleet |
| 5 | AAAmerican | 76.3% | 1.9% | 48 min | Hub complexity at ORD/DFW/PHL |
| 6 | UAUnited | 77.1% | 1.7% | 45 min | Newark-heavy, NE airspace exposure |
| 7 | WNSouthwest | 77.8% | 1.5% | 47 min | Open seating/point-to-point, weather exposure |
| 8 | HAHawaiian | 79.4% | 0.7% | 38 min | Pacific routes, weather variability |
| 9 | ASAlaska | 80.2% | 1.1% | 40 min | West Coast PNW weather |
| 10 | OOSkyWest | 81.1% | 1.4% | 36 min | Regional connector for majors |
| 11 | DLDelta | 83.7% | 0.8% | 33 min | Top-ranked legacy carrier |
Concentrated at NYC-area congested airports
ULCC tight schedules, no slack
High load factors, ULCC operating model
Point-to-point leisure routes, older fleet
Hub complexity at ORD/DFW/PHL
Newark-heavy, NE airspace exposure
Open seating/point-to-point, weather exposure
Pacific routes, weather variability
West Coast PNW weather
Regional connector for majors
Top-ranked legacy carrier
Methodology
This ranking uses three metrics from the DOT Air Travel Consumer Report: on-time arrival percentage (within 15 minutes of schedule), cancellation rate, and average minutes of delay for flights that arrived late. Airlines are sorted worst-first by on-time percentage, with cancellation rate and average delay shown alongside for context.
Figures are based on 2024 calendar-year reporting and rounded to the nearest tenth. Only carriers required to report under DOT rules (those with at least 0.5% of domestic scheduled passenger revenue) are included. Regional operations like SkyWest fly under multiple major-carrier brands, so their numbers reflect aggregated performance across mainline partners.
Delay vs Cancellation: Which Is Worse?
A delay is annoying. A cancellation can wreck your trip. Looking at the numbers, two patterns emerge: ultra-low-cost carriers (Spirit at 4.1%, Frontier at 3.8%) cancel flights at roughly five times the rate of Delta (0.8%). Their business model leaves little operational slack — when one aircraft goes down, there's no backup crew or spare jet to recover. JetBlue runs delays more than cancellations, with the longest average delay (62 minutes) but a moderate cancel rate.
Legacy carriers (Delta, United, American) tend to delay more than they cancel because they have hub redundancy and rebooking options. Regionals can swing either way depending on their mainline partner's recovery posture during irregular operations. If you're choosing between a budget carrier and a legacy at a similar price, the cancellation gap usually matters more than the delay gap.
On the flip side: most on-time airlines
Delta, SkyWest, and Alaska sit at the top of the on-time charts. See the full ranking from best to worst.
View most on-time airlinesWhy Some Airlines Run Later Than Others
Network exposure matters more than airline quality. JetBlue and United concentrate operations at JFK, LGA, and EWR — three of the most delay-prone airports in the country. American suffers from hub complexity at ORD, DFW, and PHL. Even a well-run carrier inherits the delays of its hubs.
Schedule design also drives outcomes. ULCCs like Spirit and Frontier turn aircraft fast with minimal buffer between flights — efficient when everything works, fragile when one flight slips. Hawaiian and Alaska benefit from less-congested West Coast and Pacific airspace, though weather still bites. Check live flight cancellations today to see which carriers are struggling right now.