LAX to BOS flight delays & on-time performance
Nonstop flights from Los Angeles International Airport to Boston Logan International Airport · 2,611 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LAX or BOS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Los Angeles (LAX) to Boston (BOS) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.7% were cancelled, and 9% arrived an hour or more late.
- United Airlines was the most punctual airline here (87% on time); American Airlines was the least (75%).
- Departures scheduled around 11pm did best (88% on time); around 10am did worst (62%).
- Saturday was the most reliable day to fly (82% on time) and Wednesday the least (75%).
- The largest source of delay minutes was late-arriving aircraft (36%).
Which airline is most on time from LAX to BOS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 87% | 1.1% | 10 min | 4.7% | 716 |
| Delta Air Lines | 77% | 1.9% | 21 min | 9.5% | 1,236 |
| JetBlue | 75% | 1.8% | 18 min | 9.2% | 1,629 |
| American Airlines | 75% | 1.6% | 24 min | 10.9% | 1,180 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am88%347 flights
- 7am84%432 flights
- 8am80%722 flights
- 9am66%187 flights
- 10am62%453 flights
- 11am74%152 flights
- 12pm65%166 flights
- 1pm71%382 flights
- 2pm75%185 flights
- 3pm71%335 flights
- 8pm82%108 flights
- 9pm84%491 flights
- 10pm81%551 flights
- 11pm88%244 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%2.6% cancelled
- Tuesday79%2.1% cancelled
- Wednesday75%0.7% cancelled
- Thursday75%0.7% cancelled
- Friday81%0.8% cancelled
- Saturday82%0.7% cancelled
- Sunday75%4.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft36%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion28%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather54%
- Airline (crew, maintenance, cleaning, fueling)40%
- Air traffic control & airport congestion6%
- Security0%
LAX to BOS: common questions
- How often are LAX to BOS flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Los Angeles to Boston cancelled?
- 1.7% of scheduled flights were cancelled (81 of 4,761).
- How long are typical delays?
- Across all flights the average arrival delay was 19 min (early arrivals count as zero). Flights that were late arrived 81 min behind schedule on average, and 9.0% of flights were an hour or more late.
- How long is taxi time at LAX?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BOS to LAX — 75% on time
More flights from Los Angeles
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LAX → BOS, nonstop flights by US airlines that report to the DOT. How we calculate this.