Los Angeles (LAX) to Boston (BOS): On-Time Performance
Data through July 2026
The calendar drives reliability on LAX–BOS. November 2024 flights landed on schedule 89% of the time, but July 2026 dropped to 70% — a gap of 19 points. Across the full period the route averages 80% on-time against a national 78%.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 1.0%
- Flights/day
- 13
- last 12 months
- Duration
- 5h 33m
- scheduled
- Distance
- 2,611 mi
Best airline from LAX to BOS
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 86% | 10 min | 0.6% | 1,576 |
| Delta Air Lines | 80% | 17 min | 1.2% | 2,480 |
| JetBlue Airways | 80% | 16 min | 1.0% | 3,586 |
| American Airlines | 78% | 20 min | 0.9% | 2,287 |
Monthly on-time trend
Best time to fly from LAX to BOS
Aim for departures around 6 a.m. (90% on-time); avoid 10 a.m. departures (68%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 18 min |
| Tuesdaybest | 83% | 14 min |
| Wednesday | 80% | 16 min |
| Thursday | 78% | 16 min |
| Friday | 80% | 16 min |
| Saturdaybest | 83% | 12 min |
| Sunday | 77% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft37%
- Airline operations31%
- National airspace system30%
- Weather2%
Frequently asked questions
- How often are flights from LAX to BOS delayed?
- 20% of LAX–BOS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 16 minutes.
- Which airline is most reliable from LAX to BOS?
- United Airlines has the best on-time record on this route at 86%, based on 1,576 flights. 4 airlines flew LAX–BOS frequently enough to compare in this period.
- What is the best time of day to fly from LAX to BOS?
- Departures around 6 a.m. have the best record (90% on-time), while departures around 10 a.m. have the worst (68%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAX to BOS?
- The scheduled LAX–BOS flight time averages 5h 33m over 2,611 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are LAX to BOS flights cancelled?
- 1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from LAX to BOS?
- July 2026 was the roughest month in this dataset, with only 70% of arrivals on time. The best was November 2024 at 89%. If your dates are flexible, that 19-point gap is worth planning around.
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Based on 9,950 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.