| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jan 04 | SMF | ONT | 15:28 | 16:30 |
Landed
|
Track > |
| Jan 03 | SMF | ONT | 16:57 | 17:58 |
Landed
|
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| Jan 02 | SMF | ONT | 15:23 | 16:25 |
Landed
|
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| Dec 30 | SMF | ONT | 16:11 | 17:10 |
Landed Late
|
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| Dec 29 | SMF | ONT | 15:19 | 16:27 |
Landed
|
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| Dec 28 | SMF | ONT | 15:37 | 16:37 |
Landed
|
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| Dec 27 | SMF | ONT | 17:15 | 18:12 |
Landed
|
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| Dec 26 | SMF | ONT | 15:33 | 16:36 |
Landed
|
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| Dec 23 | SMF | ONT | 16:31 | 17:38 |
Delayed
|
Track > |
| Dec 22 | SMF | ONT | 15:59 | 17:01 |
Landed Late
|
Track > |
Southwest Airlines Flight WN4373 connects Sacramento, United States to Ontario, United States, taking off from Sacramento International Airport SMF and landing at Ontario International Airport ONT.
How long is the WN4373 flight from Sacramento to Ontario?
The average flight time from Sacramento to Ontario is 1 hour and 2 minutes. The flight distance is 627 km / 390 miles and the average flight speed is 608 km/h / 378 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4373 Sacramento to Ontario?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4373 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN4373 arriving at?
Flight WN4373 arrives at Ontario International Airport (ONT) Terminal 4.
When was the latest WN4373 flight?
The latest flight took off on Monday, January 5th, 2026 with the flight status being Landed on 16:30.
How else can the flight WN4373 be referenced as?
This Southwest Airlines flight can also be referenced as SWA4373, WN 4373, SWA 4373.
How often is flight WN4373 delayed?
On average, 60% of all WN4373 flights are delayed. The average delay is 21 minutes.
Can I get compensation for my delayed or cancelled WN4373 flight or baggage issues?
If your WN4373 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 WN4373 Flight Tracker above for more details.
Other flights departing from Sacramento SMF: DL3885, WN4877, WN1379, WN3658
Other flights arriving at Ontario ONT: WN2350, WN570, WN4540, WN2969
All flights connecting Sacramento SMF to Ontario ONT.