Informational Guide to Seattle–Tacoma Airport - Seatac (SEA) - NON OFFICIAL

UA645 United Airlines - Flight Status

Below, you can find details about United Airlines flight UA645, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and Denver - Denver International Airport (Airport Code DEN).
This flight data pertains specifically to the flight's details for Wednesday, March 12, 2025.

UA645 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Flight Status

UA645 United Airlines to Denver

Scheduled - On-time
Flight Status for Wednesday March 12, 2025
This flight was also scheduled for Yesterday (March 11, 2025). See it here
This flight is also scheduled for Tomorrow (March 13, 2025). See it here

Airline information

United Airlines
United Airlines
Equipment: Boeing 737-900 Passenger

Departure

Seattle (SEA)
March 12, 2025
Seattle-Tacoma International Airport
Estimated Departure Time:
12:55 pm
Gate:
A8
Scheduled Departure Time: 12:55 pm

Arrival

Denver (DEN)
March 12, 2025
Denver International Airport
Estimated Arrival Time:
04:40 pm
Terminal:
-
Gate:
A14
Scheduled Arrival Time: 04:40 pm
Baggage: 17
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.seattle-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Additional Information

Which is the frequency of flight UA645?
The flight UA645 is scheduled to flight on daily basis.

Which is the distance of flight UA645?
The distance between the two airports is 1022 miles.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Seattle: 2025-03-12 04:20:35
Current Time in Denver: 2025-03-12 05:20:35

Alternative Flights

The following airlines serves the same route between Seattle and Denver:

Alaska Airlines
- Flight Number: AS147. (On Time performance: 100 - Average Delay: 3 minutes)
- Flight Number: AS321. (On Time performance: 80 - Average Delay: 16 minutes)
- Flight Number: AS524. (On Time performance: 77 - Average Delay: 8 minutes)
- Flight Number: AS602. (On Time performance: 73 - Average Delay: 18 minutes)
- Flight Number: AS682. (On Time performance: 86 - Average Delay: 8 minutes)

Air Transport International
- Flight Number: 8C3411. (On Time performance: 32 - Average Delay: 35 minutes)

Delta Air Lines
- Flight Number: DL2740. (On Time performance: 83 - Average Delay: 17 minutes)
- Flight Number: DL2851. (On Time performance: 77 - Average Delay: 28 minutes)
- Flight Number: DL3679. (On Time performance: 82 - Average Delay: 13 minutes)
- Flight Number: DL3681.
- Flight Number: DL3694. (On Time performance: 78 - Average Delay: 10 minutes)

Frontier Airlines
- Flight Number: F93406. (On Time performance: 72 - Average Delay: 20 minutes)

United Airlines
- Flight Number: UA1218.
- Flight Number: UA1387. (On Time performance: 83 - Average Delay: 17 minutes)
- Flight Number: UA1829. (On Time performance: 91 - Average Delay: 8 minutes)
- Flight Number: UA2269. (On Time performance: 94 - Average Delay: 3 minutes)
- Flight Number: UA423. (On Time performance: 81 - Average Delay: 7 minutes)
- Flight Number: UA597.
- Flight Number: UA757. (On Time performance: 92 - Average Delay: 5 minutes)

Southwest Airlines
- Flight Number: WN1305.
- Flight Number: WN249. (On Time performance: 78 - Average Delay: 10 minutes)
- Flight Number: WN3228.
- Flight Number: WN3929. (On Time performance: 95 - Average Delay: 2 minutes)
- Flight Number: WN743. (On Time performance: 86 - Average Delay: 8 minutes)
- Flight Number: WN805. (On Time performance: 91 - Average Delay: 3 minutes)

Punctuality and delays

It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions

Last Past Flights UA645

Date
Departure
Arrival
Duration
Aircraft
Status
Tuesday
11 March
01:26 pm
Seattle (SEA)
04:59 pm
Denver (DEN)
02h 33min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Monday
10 March
12:51 pm
Seattle (SEA)
04:37 pm
Denver (DEN)
02h 46min
Boeing 737-900
Boeing 737-900
Landed - On-time
Sunday
09 March
01:07 pm
Seattle (SEA)
04:34 pm
Denver (DEN)
02h 27min
Boeing 737-900
Boeing 737-900
Landed - On-time
Saturday
08 March
01:01 pm
Seattle (SEA)
04:42 pm
Denver (DEN)
02h 41min
Boeing 737-900
Boeing 737-900
Landed - On-time
Friday
07 March
12:47 pm
Seattle (SEA)
04:37 pm
Denver (DEN)
02h 50min
Boeing 737-900
Boeing 737-900
Landed - On-time
Thursday
06 March
01:14 pm
Seattle (SEA)
04:56 pm
Denver (DEN)
02h 42min
Boeing 737-900
Boeing 737-900
Landed - Delayed