WN1221 Flight Status Southwest Airlines: Boston to Denver (SWA1221)
WN 1221 Boston to Denver Flight Status
Not scheduled today. Latest flight: August 2nd, 2026 ; recent history is in the table below.
- This flight started in Baltimore (BWI): WN1221 Baltimore to Boston departs at 10:25 local time on Aug 2.
WN 1221 Flight Status & Schedule Southwest Airlines Boston to Denver
| Date | From | To | Departure | Arrival | Status | Details |
|---|---|---|---|---|---|---|
| Aug 02 | BOS | DEN | 14:05 | 15:59 | Landed Late | Track > |
| Jul 26 | BOS | DEN | 12:55 | 14:48 | Landed | Track > |
| Jul 19 | BOS | DEN | 13:41 | 15:32 | Landed Late | Track > |
| Jul 12 | BOS | DEN | 12:59 | 14:38 | Landed | Track > |
| Jul 05 | BOS | DEN | 13:24 | 15:23 | Landed Late | Track > |
| Jun 28 | BOS | DEN | 14:12 | 16:13 | Delayed | Track > |
| Jun 21 | BOS | DEN | 13:17 | 15:27 | Landed Late | Track > |
| Jun 14 | BOS | DEN | 12:50 | 15:06 | Landed | Track > |
| Jun 07 | BOS | DEN | 12:59 | 14:47 | Landed | Track > |
Southwest Airlines operates WN 1221 from Boston to Denver, a 2,816 km (1,749 mi) trip. Its timetable allows 4 h 30 min; in practice it usually takes about 3 h 55 min, so it often makes up time. It is not flying today; the last flight, on 2 August 2026, landed 54 minutes late.
About WN 1221
- Distance
- 2,816 km (1,749 mi)
- Typical flight time
- 3 h 55 min
- On time
- 4 of the last 8
- Average delay when late
- 30 min
- Usually departs from
- Terminal B
WN 1221 FAQ
- How long is the WN1221 flight?
- The timetable allows 4 h 30 min. Boston to Denver is 2,816 km (1,749 mi).
- How often is WN1221 late?
- 4 of the last 8 flights arrived 15 or more minutes late; when late, by 30 minutes on average.
- Which terminal does WN1221 use?
- It usually leaves from Terminal B at Boston Logan International Airport (BOS). Check the flight card above for today's terminal and gate.
- What other flight numbers does WN1221 have?
- Also listed as SWA1221 (Southwest Airlines' ICAO code) and WN 1221.
Southwest Airlines WN1221 News
WN1221 and Boston BOS to Denver DEN Flights
Other flights departing from Boston BOS: YX4366, YX3413, AA3043
Other flights arriving at Denver DEN: AA1735, WN2226, WN3062
All flights connecting Boston BOS to Denver DEN.