Route
BOS → LAX
Boston Logan International Airport Los Angeles International Airport
How punctual is this route?
- On-time arrivals
- 73.7%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 83 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4,794
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 42%
- Airline (crew, maintenance, cleaning) 35%
- Air traffic control & airport 21%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 79.1% | 364 |
| October 2025 | 70.9% | 402 |
| November 2025 | 78.0% | 375 |
| December 2025 | 62.1% | 381 |
| January 2026 | 67.8% | 373 |
| February 2026 | 67.9% | 344 |
| March 2026 | 81.4% | 390 |
| April 2026 | 78.7% | 362 |
| May 2026 | 84.4% | 398 |
| June 2026 | 68.8% | 452 |
| July 2026 | 74.4% | 484 |
| August 2026 | 71.1% | 469 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| JetBlue Airways | 1,642 | 72.2% | 2.0% | 78 min |
| Delta Air Lines | 1,238 | 73.9% | 2.2% | 79 min |
| American Airlines | 1,183 | 73.6% | 1.6% | 99 min |
| United Airlines | 731 | 76.8% | 1.1% | 77 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL479
22% late · 363 flights
-
DL318
29% late · 345 flights
-
B6287
15% late · 335 flights
-
B6387
36% late · 312 flights
-
B6487
28% late · 297 flights
-
DL321
34% late · 284 flights
-
B6187
38% late · 210 flights
-
AA1578
37% late · 198 flights
-
UA311
19% late · 185 flights
-
AA1243
26% late · 182 flights
-
B61487
25% late · 180 flights
-
AA2455
16% late · 175 flights
-
B6687
14% late · 172 flights
-
UA360
11% late · 156 flights
-
UA333
34% late · 149 flights
-
AA2760
35% late · 143 flights
-
UA639
36% late · 143 flights
-
DL2004
15% late · 117 flights
-
DL1728
19% late · 108 flights
-
B61387
48% late · 105 flights
-
AA1277
16% late · 73 flights
-
AA2473
17% late · 46 flights
-
AA3097
25% late · 37 flights
-
AA1197
35% late · 36 flights
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Headlines found by Google News; stories open on the publisher's site.
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