| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Mar 01 | DEN | BOS | 13:15 | 18:26 |
Landed
|
Track > |
| Feb 28 | DEN | BOS | 11:30 | 16:42 |
Landed
|
Track > |
| Feb 27 | DEN | BOS | 13:41 | 19:05 |
Landed Late
|
Track > |
| Feb 26 | DEN | BOS | 13:35 | 18:54 |
Landed
|
Track > |
| Feb 22 | DEN | BOS | 13:00 | 18:45 |
Cancelled
|
Track > |
| Claim > | ||||||
| Feb 21 | DEN | BOS | 12:37 | 17:51 |
Delayed
|
Track > |
| Feb 20 | DEN | BOS | 13:21 | 18:33 |
Landed
|
Track > |
| Feb 16 | DEN | BOS | 13:20 | 18:33 |
Landed
|
Track > |
| Feb 14 | DEN | BOS | 11:19 | 16:38 |
Landed
|
Track > |
| Feb 13 | DEN | BOS | 13:19 | 18:34 |
Landed
|
Track > |
Southwest Airlines Flight WN4378 connects Denver, United States to Boston, United States, taking off from Denver International Airport DEN and landing at Boston Logan International Airport BOS.
How long is the WN4378 flight from Denver to Boston?
The average flight time from Denver to Boston is 3 hours and 15 minutes. The flight distance is 2816 km / 1749 miles and the average flight speed is 853 km/h / 530 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4378 Denver to Boston?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4378 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN4378 arriving at?
Flight WN4378 arrives at Boston Logan International Airport (BOS) Terminal B.
When was the latest WN4378 flight?
The latest flight took off on Sunday, March 1st, 2026 with the flight status being Landed on 18:26.
How else can the flight WN4378 be referenced as?
This Southwest Airlines flight can also be referenced as SWA4378, WN 4378, SWA 4378.
How often is flight WN4378 delayed?
On average, 30% of all WN4378 flights are delayed. The average delay is 26 minutes.
Can I get compensation for my delayed or cancelled WN4378 flight or baggage issues?
If your WN4378 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our WN4378 Flight Tracker above for more details.
Other flights departing from Denver DEN: WN2213, WN4176, WN1467, WN4466
Other flights arriving at Boston BOS: AA793, DL1392, DL1661, UA1701
All flights connecting Denver DEN to Boston BOS.