Flight profile · Delta Air Lines
DL437
Los Angeles (LAX) to Boston (BOS) · scheduled 1:00 PM – 9:23 PM
How DL437 performs
648 operations, 2024-06-07 to 2026-06-30.
DL437 arrived on time 75.9% of the time, against 80.5% for all LAX → BOS flights — this specific departure is 4.6 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 5.1 points worse.
Source: US DOT Bureau of Transportation Statistics · 648 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL437 | 75.9% | 0.62% | -4 min | 10.1% | 648 |
| Delta Air Lines on LAX → BOS | 81.0% | 0.83% | -7 min | 6.7% | 3,494 |
| All LAX → BOS flights | 80.5% | 0.74% | -8 min | 7.2% | 13,840 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL437 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| MSN→DTW Madison to Detroit | 2025-04-19 – 2025-05-03 | 3 | — |
| AUS→MCO Austin to Orlando | 2024-05-07 – 2024-06-06 | 26 | — |
| MCO→AUS Orlando to Austin | 2024-05-07 – 2024-06-06 | 26 | — |
| MSP→BOI Minneapolis to Boise | 2024-05-11 – 2024-06-01 | 5 | — |
| SEA→MSP Seattle to Minneapolis | 2024-04-09 – 2024-05-06 | 28 | — |
| SFO→ATL San Francisco to Atlanta | 2023-07-01 – 2024-04-08 | 130 | 81.7% |
| SEA→DTW Seattle to Detroit | 2024-01-08 – 2024-03-09 | 62 | — |
| STL→MSP St. Louis to Minneapolis | 2023-12-16 – 2024-01-07 | 8 | — |
| ATL→SFO Atlanta to San Francisco | 2023-09-05 – 2023-12-31 | 64 | — |
| TPA→SEA Tampa to Seattle | 2023-11-05 – 2023-12-06 | 31 | — |
Because the same number has served different journeys, the statistics above describe only the route DL437 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 648 records of DL437 operating LAX → BOS, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.