Are you looking for the June 4th, 2026 UA 635 San Francisco to Nashville flight? Click here to go to our UA635 San Francisco to Nashville Flight Status page >

UA 635 Ontario to Denver Flight Status

United Airlines Flight UA635 from Ontario International Airport ONT to Denver International Airport DEN is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on July 29th, 2025.
Check the table below for UA635's most recent flight history:

UA 635 Flight Status & Schedule

Date Departure Arrival Status
Jul 29 18:34 21:24
Landed
Track >
Jul 28 18:22 21:08
Landed
Track >
Jul 26 19:46 22:30
Landed Late
Track >
Jul 25 18:32 21:16
Landed
Track >
Jul 22 19:42 22:29
Landed Late
Track >

United Airlines UA 635 Ontario to Denver Flight Information

United Airlines Flight UA635 connects Ontario, United States to Denver, United States, taking off from Ontario International Airport ONT and landing at Denver International Airport DEN.

How long is the UA635 flight from Ontario to Denver?

The average flight time from Ontario to Denver is 1 hour and 47 minutes. The flight distance is 1316 km / 818 miles and the average flight speed is 736 km/h / 458 mph.

What is the On-Time Performance (OTP) of United Airlines Flight UA635 Ontario to Denver?

The Airportia On-Time Performance Rating for United Airlines Flight UA635 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.

When was the latest UA635 flight?

The latest flight took off on Wednesday, July 30th, 2025 with the flight status being Landed on 21:24.

How else can the flight UA635 be referenced as?

This United Airlines flight can also be referenced as UAL635, UA0635, UA 635, UAL 635.

How often is flight UA635 delayed?

On average, 40% of all UA635 flights are delayed. The average delay is 28 minutes.

Can I get compensation for my delayed or cancelled UA635 flight or baggage issues?

If your UA635 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 UA635 Flight Tracker above for more details.

UA635 and Ontario ONT to Denver DEN Flights

Flight UA635 is code-shared by 1 airline using the flight number AC3779

Other flights departing from Ontario ONT: WN3520, WN4138, UA1603, WN4149

Other flights arriving at Denver DEN: WN4407, UA2610, UA600, WN116

All flights connecting Ontario ONT to Denver DEN.

UA635 United Airlines Flight: Ontario to Denver Route Map

UA635 United Airlines Flight Map: Ontario to Denver
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.