The Best Airline on Each Major US Route
Data through July 2026
For each of the 20 busiest US routes: the carrier with the best on-time record (minimum 60 flights on the route).
| # | Route | Most reliable airline | Route on-time |
|---|---|---|---|
| 1 | ORD → LGA | Republic Airways | 71% |
| 2 | LGA → ORD | SkyWest Airlines | 72% |
| 3 | SFO → LAX | United Airlines | 77% |
| 4 | LAX → SFO | SkyWest Airlines | 70% |
| 5 | LAX → JFK | JetBlue Airways | 80% |
| 6 | JFK → LAX | American Airlines | 80% |
| 7 | OGG → HNL | Southwest Airlines | 88% |
| 8 | HNL → OGG | Southwest Airlines | 88% |
| 9 | BOS → DCA | Delta Air Lines | 76% |
| 10 | DCA → BOS | Republic Airways | 75% |
| 11 | DEN → PHX | United Airlines | 76% |
| 12 | PHX → DEN | United Airlines | 78% |
| 13 | ATL → LGA | Spirit Airlines | 74% |
| 14 | LGA → ATL | Spirit Airlines | 77% |
| 15 | LAS → LAX | Alaska Airlines | 79% |
| 16 | LAX → LAS | United Airlines | 78% |
| 17 | ATL → MCO | Southwest Airlines | 70% |
| 18 | MCO → ATL | Delta Air Lines | 74% |
| 19 | ORD → BOS | Envoy Air | 71% |
| 20 | BOS → ORD | Spirit Airlines | 75% |
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Based on 14,739,704 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.