BOS to LAX flight delays & on-time performance
Nonstop flights from Boston Logan International Airport to Los Angeles International Airport · 2,611 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOS or LAX right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boston (BOS) to Los Angeles (LAX) arrived on time 75% 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 (77% on time); American Airlines was the least (74%).
- Departures scheduled around 6am did best (84% on time); around 7pm did worst (62%).
- Wednesday was the most reliable day to fly (77% on time) and Monday the least (73%).
- The largest source of delay minutes was late-arriving aircraft (42%).
Which airline is most on time from BOS to LAX?
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 | 77% | 1.1% | 17 min | 7.5% | 716 |
| Delta Air Lines | 76% | 1.9% | 19 min | 8.5% | 1,234 |
| JetBlue | 74% | 1.8% | 20 min | 9.5% | 1,629 |
| American Airlines | 74% | 1.6% | 26 min | 10.0% | 1,179 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am84%541 flights
- 7am84%574 flights
- 8am80%411 flights
- 9am78%274 flights
- 10am83%373 flights
- 11am75%181 flights
- 12pm75%182 flights
- 1pm84%93 flights
- 2pm75%200 flights
- 3pm75%99 flights
- 4pm73%253 flights
- 5pm63%403 flights
- 6pm67%556 flights
- 7pm62%190 flights
- 8pm63%367 flights
- 9pm62%50 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%4.7% cancelled
- Tuesday77%2.1% cancelled
- Wednesday77%0.7% cancelled
- Thursday74%0.3% cancelled
- Friday74%0.7% cancelled
- Saturday76%1.0% cancelled
- Sunday75%2.3% 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 aircraft42%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion20%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather58%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion7%
- Security0%
BOS to LAX: common questions
- How often are BOS to LAX flights on time?
- 75% 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 Boston to Los Angeles cancelled?
- 1.7% of scheduled flights were cancelled (81 of 4,758).
- How long are typical delays?
- Across all flights the average arrival delay was 21 min (early arrivals count as zero). Flights that were late arrived 79 min behind schedule on average, and 9.1% of flights were an hour or more late.
- How long is taxi time at BOS?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAX to BOS — 77% on time
More flights from Boston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOS → LAX, nonstop flights by US airlines that report to the DOT. How we calculate this.