Airlines at Boston Logan International Airport (BOS)
Boston, Massachusetts KBOS #16 US airport by passengers
Airlines operating at BOS, ranked by number of departures.
On-time performance at BOS
Based on 38,654 departures from May 2026 to July 2026. A flight counts as late when it leaves 15 or more minutes after schedule.
22.7%Departures late
25.2%Arrivals late
2.79%Cancelled
18.2 minAverage departure delay
| Airline | Departures | Late |
|---|---|---|
| JetBlue Airways | 9,757 | 26.6% |
| Republic Airways | 9,516 | 19.2% |
| Delta Air Lines | 7,071 | 19.6% |
| American Airlines | 4,801 | 21.8% |
| United Airlines | 3,628 | 19.9% |
| Southwest Airlines | 2,137 | 41.0% |
| Alaska Airlines | 727 | 20.5% |
| Envoy Air | 560 | 18.4% |
| Frontier Airlines | 258 | 19.0% |
| Allegiant Air | 193 | 15.0% |
Source: Bureau of Transportation Statistics, On-Time Performance of reporting carriers. Smaller regional carriers and some airlines are not included.
Airline presence
Delta dominates Terminal A. American, Southwest, United, Alaska, Air Canada and Boutique Air use Terminal B. JetBlue is the main carrier in Terminal C, and Terminal E is used by international airlines.