Boston Logan International Airport (BOS) delays & on-time performance
Boston, Massachusetts · 83 nonstop destinations · 12 airlines · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
On-time arrivals
76%
arrived < 15 min late
Cancelled
2.8%
4,040 flights
Avg arrival delay
18 min
72 min when late
Departed on time
77%
avg taxi-out 21 min
Figures cover 143,447 departures from BOS; on-time is measured at arrival. Arrivals into BOS were on time 73% of the time.
Key facts
- Flights departing Boston Logan International Airport (BOS) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.8% were cancelled, and 10% arrived an hour or more late.
- United Airlines was the most punctual airline here (79% on time); Southwest Airlines was the least (71%).
- Departures scheduled around 5am did best (92% on time); around 7pm did worst (59%).
- The largest source of delay minutes was late-arriving aircraft (43%).
Most delayed routes from BOS
Lowest on-time arrival rates among regularly flown routes.
- PQI · Presque Isle/Houlton65%365 flts
- PBI · West Palm Beach/Palm Beach65%2,153 flts
- FLL · Fort Lauderdale67%3,359 flts
- SJU · San Juan67%1,770 flts
- SYR · Syracuse69%474 flts
- BNA · Nashville70%2,934 flts
- MCO · Orlando71%4,620 flts
- RSW · Fort Myers71%2,193 flts
- SFO · San Francisco72%4,735 flts
- SRQ · Sarasota/Bradenton72%685 flts
Most reliable routes from BOS
Highest on-time arrival rates among regularly flown routes.
- ORF · Norfolk87%474 flts
- SDF · Louisville85%708 flts
- IAD · Washington84%1,516 flts
- MSP · Minneapolis83%1,853 flts
- CLT · Charlotte83%4,019 flts
- MKE · Milwaukee83%741 flts
- ILM · Wilmington82%433 flts
- IND · Indianapolis82%2,022 flts
- IAH · Houston81%2,021 flts
- SAV · Savannah81%1,044 flts
Best airline at BOS
Departures from this airport, ranked by on-time arrival.
| Airline | On time | Cancelled | Avg delay | Routes | Flights |
|---|---|---|---|---|---|
| Allegiant Air | 84% | 0.7% | 14 min | 9 | 607 |
| Envoy Air | 80% | 2.2% | 17 min | 14 | 2,035 |
| United Airlines | 79% | 1.9% | 17 min | 8 | 12,960 |
| American Airlines | 79% | 2.6% | 20 min | 15 | 17,113 |
| Republic Airways | 78% | 4.0% | 15 min | 42 | 34,144 |
| Delta Air Lines | 77% | 2.1% | 18 min | 42 | 26,458 |
| Hawaiian Airlines | 73% | 1.5% | 18 min | 1 | 68 |
| Alaska Airlines | 72% | 1.1% | 16 min | 5 | 2,443 |
| JetBlue | 72% | 3.0% | 21 min | 53 | 37,422 |
| Southwest Airlines | 71% | 1.6% | 19 min | 13 | 7,248 |
| Frontier Airlines | 69% | 1.7% | 19 min | 7 | 930 |
| Spirit Airlines | 64% | 5.2% | 29 min | 14 | 2,019 |
Best time to fly out of BOS
On-time arrival rate by scheduled departure hour (local time).
- 5am92%4,258 flts
- 6am89%11,246 flts
- 7am86%14,086 flts
- 8am85%11,540 flts
- 9am84%10,144 flts
- 10am82%8,236 flts
- 11am80%8,113 flts
- 12pm77%7,515 flts
- 1pm77%6,749 flts
- 2pm74%6,864 flts
- 3pm69%9,418 flts
- 4pm65%8,856 flts
- 5pm63%9,846 flts
- 6pm64%8,617 flts
- 7pm59%7,873 flts
- 8pm60%7,541 flts
- 9pm60%2,343 flts
Monthly trend
Why departures were late
- Late-arriving aircraft43%
- Airline (crew, maintenance, cleaning, fueling)28%
- Air traffic control & airport congestion26%
- Extreme weather3%
- Security0%
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.