| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jan 04 | DEN | ONT | 12:27 | 13:33 |
Landed
|
Track > |
| Jan 02 | DEN | ONT | 13:14 | 14:04 |
Landed Late
|
Track > |
| Dec 30 | DEN | ONT | 12:44 | 13:31 |
Landed
|
Track > |
| Dec 29 | DEN | ONT | 12:59 | 13:51 |
Landed Late
|
Track > |
| Dec 28 | DEN | ONT | 12:28 | 13:21 |
Landed
|
Track > |
| Dec 26 | DEN | ONT | 12:46 | 13:58 |
Landed Late
|
Track > |
| Dec 23 | DEN | ONT | 12:34 | 13:39 |
Landed
|
Track > |
| Dec 22 | DEN | ONT | 12:29 | 13:29 |
Landed
|
Track > |
| Dec 21 | DEN | ONT | 12:29 | 13:26 |
Landed
|
Track > |
| Dec 19 | DEN | ONT | 14:51 | 15:42 |
Delayed
|
Track > |
Southwest Airlines Flight WN4721 connects Denver, United States to Ontario, United States, taking off from Denver International Airport DEN and landing at Ontario International Airport ONT.
How long is the WN4721 flight from Denver to Ontario?
The average flight time from Denver to Ontario is 1 hour and 57 minutes. The flight distance is 1316 km / 818 miles and the average flight speed is 676 km/h / 420 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4721 Denver to Ontario?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4721 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN4721 arriving at?
Flight WN4721 arrives at Ontario International Airport (ONT) Terminal 4.
When was the latest WN4721 flight?
The latest flight took off on Sunday, January 4th, 2026 with the flight status being Landed on 13:33.
How else can the flight WN4721 be referenced as?
This Southwest Airlines flight can also be referenced as SWA4721, WN 4721, SWA 4721.
How often is flight WN4721 delayed?
On average, 50% of all WN4721 flights are delayed. The average delay is 39 minutes.
Can I get compensation for my delayed or cancelled WN4721 flight or baggage issues?
If your WN4721 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 WN4721 Flight Tracker above for more details.
Other flights departing from Denver DEN: WN591, WN4812, WN2310, WN4355
Other flights arriving at Ontario ONT: F93163, WN717, WN1110, WN2850
All flights connecting Denver DEN to Ontario ONT.