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UA 645 Los Angeles to Denver Flight Status

United Airlines Flight UA645 from Los Angeles International Airport LAX to Denver International Airport DEN is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on January 5th, 2026.
Check the table below for UA645's most recent flight history:

UA 645 Flight Status & Schedule

Date Departure Arrival Status
Jan 05 13:42 16:20
Landed
Track >
Jan 04 13:26 16:11
Landed
Track >
Jan 03 13:51 16:36
Landed
Track >
Jan 02 13:25 16:16
Landed
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Jan 01 16:08 18:53
Delayed
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United Airlines UA 645 Los Angeles to Denver Flight Information

United Airlines Flight UA645 connects Los Angeles, United States to Denver, United States, taking off from Los Angeles International Airport LAX and landing at Denver International Airport DEN.

How long is the UA645 flight from Los Angeles to Denver?

The average flight time from Los Angeles to Denver is 1 hour and 46 minutes. The flight distance is 1385 km / 861 miles and the average flight speed is 779 km/h / 484 mph.

What is the On-Time Performance (OTP) of United Airlines Flight UA645 Los Angeles to Denver?

The Airportia On-Time Performance Rating for United Airlines Flight UA645 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.

When was the latest UA645 flight?

The latest flight took off on Monday, January 5th, 2026 with the flight status being Landed on 16:20.

How else can the flight UA645 be referenced as?

This United Airlines flight can also be referenced as UAL645, UA0645, UA 645, UAL 645.

How often is flight UA645 delayed?

On average, 20% of all UA645 flights are delayed. The average delay is 70 minutes.

Can I get compensation for my delayed or cancelled UA645 flight or baggage issues?

If your UA645 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 UA645 Flight Tracker above for more details.

UA645 and Los Angeles LAX to Denver DEN Flights

Flight UA645 is code-shared by 5 airlines using the flight numbers AC3891, NH7218, NZ9479, SQ1647, VA8323

Other flights departing from Los Angeles LAX: UA5572, WN799, UA2158, UA1229

Other flights arriving at Denver DEN: UA2121, UA5633, WN3327, UA630

All flights connecting Los Angeles LAX to Denver DEN.

UA645 United Airlines Flight: Los Angeles to Denver Route Map

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.