| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Apr 06 | DEN | BOI | 16:05 | 17:37 |
Landed
|
Track > |
| Apr 03 | DEN | BOI | 15:39 | 17:12 |
Landed
|
Track > |
| Apr 02 | DEN | BOI | 15:38 | 17:14 |
Landed
|
Track > |
| Apr 01 | DEN | BOI | 14:18 | 15:48 |
Landed
|
Track > |
| Mar 31 | DEN | BOI | 14:00 | 15:38 |
Landed
|
Track > |
| Mar 30 | DEN | BOI | 16:11 | 17:42 |
Landed
|
Track > |
| Mar 27 | DEN | BOI | 16:22 | 17:59 |
Landed Late
|
Track > |
| Mar 26 | DEN | BOI | 15:51 | 17:26 |
Landed
|
Track > |
| Mar 25 | DEN | BOI | 14:07 | 15:42 |
Landed
|
Track > |
| Mar 24 | DEN | BOI | 14:06 | 15:41 |
Landed
|
Track > |
Southwest Airlines Flight WN1221 connects Denver, United States to Boise, United States, taking off from Denver International Airport DEN and landing at Boise Airport BOI.
How long is the WN1221 flight from Denver to Boise?
The average flight time from Denver to Boise is 1 hour and 34 minutes. The flight distance is 1042 km / 648 miles and the average flight speed is 664 km/h / 413 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN1221 Denver to Boise?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN1221 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN1221 arriving at?
Flight WN1221 arrives at Boise Airport (BOI) Terminal 2.
When was the latest WN1221 flight?
The latest flight took off on Monday, April 6th, 2026 with the flight status being Landed on 17:37.
How else can the flight WN1221 be referenced as?
This Southwest Airlines flight can also be referenced as SWA1221, WN 1221, SWA 1221.
How often is flight WN1221 delayed?
On average, 30% of all WN1221 flights are delayed. The average delay is 16 minutes.
Can I get compensation for my delayed or cancelled WN1221 flight or baggage issues?
If your WN1221 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 WN1221 Flight Tracker above for more details.
Other flights departing from Denver DEN: WN2171, WN970, WN1269, KG640
Other flights arriving at Boise BOI: G43219, DL3508, AA6280, WN2684
All flights connecting Denver DEN to Boise BOI.