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WN4277 Flight Status Southwest Airlines: Sacramento to Ontario (SWA4277)

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WN 4277 Sacramento to Ontario Flight Status

Southwest Airlines Flight WN4277 from Sacramento International Airport SMF to Ontario International Airport ONT is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on June 2nd, 2025.
Check the table below for WN4277's most recent flight history:

WN 4277 Flight Status & Schedule

Date Departure Arrival Status
Jun 02 20:13 21:13
Landed
 Track >
Jun 01 19:05 20:04
Landed
 Track >
May 31 21:29 22:31
Landed Late
 Track >
< All SMF Departures All ONT Arrivals >

Southwest Airlines WN 4277 Sacramento to Ontario Flight Information

Southwest Airlines Flight WN4277 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 WN4277 flight from Sacramento to Ontario?

The average flight time from Sacramento to Ontario is 1 hour. The flight distance is 627 km / 390 miles and the average flight speed is 624 km/h / 388 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4277 Sacramento to Ontario?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4277 is 4.3/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4277 arriving at?

Flight WN4277 arrives at Ontario International Airport (ONT) Terminal 4.

When was the latest WN4277 flight?

The latest flight took off on Tuesday, June 3rd, 2025 with the flight status being Landed on 21:13.

How else can the flight WN4277 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4277, WN 4277, SWA 4277.

How often is flight WN4277 delayed?

On average, 67% of all WN4277 flights are delayed. The average delay is 64 minutes.

Can I get compensation for my delayed or cancelled WN4277 flight or baggage issues?

If your WN4277 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 WN4277 Flight Tracker above for more details.

WN4277 and Sacramento SMF to Ontario ONT Flights

Other flights departing from Sacramento SMF: AS2480, WN2230, WN4290, WN4337

Other flights arriving at Ontario ONT: WN2063, WN1582, WN4266, WN3021

All flights connecting Sacramento SMF to Ontario ONT.

WN4277 Southwest Airlines Flight: Sacramento to Ontario Route Map

WN4277 Southwest Airlines Flight Map: Sacramento to Ontario
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: MS6123 SV9608 U24137 EB9495 BT597 PC4610 PC4616 5F254 BT743 DX766
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.