WN856 Southwest Airlines - Flight Status
Below, you can find details about Southwest Airlines flight WN856, which currently operates between the airports of Denver - Denver International Airport (Airport Code DEN) and Seattle - Seattle-Tacoma International Airport (Airport Code SEA).
This flight data pertains specifically to the flight's details for Tuesday, December 23, 2025.
Table of contents:
Flight Status Additional Information Alternative Flights Punctuality and delays Last Past Flights WN856
Flight Status Additional Information Alternative Flights Punctuality and delays Last Past Flights WN856
WN856 On Time performance:
40
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays Flight Status
WN856 Southwest Airlines from Denver
Scheduled - On-time
Flight Status for Tuesday December 23, 2025
This flight was also scheduled for Yesterday (December 21, 2025). See it here
This flight is also scheduled for Today (December 22, 2025). See it here
Scheduled - On-time
Flight Status for Tuesday December 23, 2025
Departure
Denver (DEN)
December 23, 2025
Denver International Airport
Estimated Departure Time:
07:50 am
Terminal:
-
Gate:
C55
Scheduled Departure Time: 07:50 am
Arrival
Seattle (SEA)
December 23, 2025
Seattle-Tacoma International Airport
Estimated Arrival Time:
09:39 am
Gate:
B12
Scheduled Arrival Time: 09:55 am
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 WN856?
The flight WN856 is scheduled to flight on Monday, Tuesday, Wednesday, Friday, Saturday, Sunday on a weekly basis.
Which is the distance of flight WN856?
The distance between the two airports is 1022 miles.
Which is the flight time of flight WN856?
The scheduled flight time gate to gate is: 03:05 hours.
The real flight time gate to gate on average is: 03:14 hours.
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 Denver: 2025-12-22 16:21:51
Current Time in Seattle: 2025-12-22 15:21:51
The flight WN856 is scheduled to flight on Monday, Tuesday, Wednesday, Friday, Saturday, Sunday on a weekly basis.
Which is the distance of flight WN856?
The distance between the two airports is 1022 miles.
Which is the flight time of flight WN856?
The scheduled flight time gate to gate is: 03:05 hours.
The real flight time gate to gate on average is: 03:14 hours.
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 Denver: 2025-12-22 16:21:51
Current Time in Seattle: 2025-12-22 15:21:51
Alternative Flights
The following airlines serves the same route between Denver and Seattle:
Alaska Airlines
- Flight Number: AS154. (On Time performance: 56 - Average Delay: 26 minutes)
- Flight Number: AS535. (On Time performance: 74 - Average Delay: 11 minutes)
- Flight Number: AS615. (On Time performance: 65 - Average Delay: 14 minutes)
- Flight Number: AS643. (On Time performance: 86 - Average Delay: 8 minutes)
- Flight Number: AS682. (On Time performance: 85 - Average Delay: 8 minutes)
- Flight Number: AS787. (On Time performance: 74 - Average Delay: 20 minutes)
Air Transport International
- Flight Number: 8C3381. (On Time performance: 28 - Average Delay: 34 minutes)
Delta Air Lines
- Flight Number: DL1175. (On Time performance: 82 - Average Delay: 22 minutes)
- Flight Number: DL1731. (On Time performance: 80 - Average Delay: 25 minutes)
- Flight Number: DL2740. (On Time performance: 79 - Average Delay: 17 minutes)
- Flight Number: DL317. (On Time performance: 50 - Average Delay: 80 minutes)
Frontier Airlines
- Flight Number: F94545. (On Time performance: 78 - Average Delay: 10 minutes)
United Airlines
- Flight Number: UA1115. (On Time performance: 69 - Average Delay: 19 minutes)
- Flight Number: UA1424. (On Time performance: 94 - Average Delay: 3 minutes)
- Flight Number: UA1729. (On Time performance: 84 - Average Delay: 7 minutes)
- Flight Number: UA2013. (On Time performance: 94 - Average Delay: 5 minutes)
- Flight Number: UA2271. (On Time performance: 88 - Average Delay: 5 minutes)
- Flight Number: UA2651. (On Time performance: 80 - Average Delay: 10 minutes)
- Flight Number: UA618. (On Time performance: 73 - Average Delay: 11 minutes)
Southwest Airlines
- Flight Number: WN2626. (On Time performance: 40 - Average Delay: 26 minutes)
- Flight Number: WN2628. (On Time performance: 64 - Average Delay: 17 minutes)
- Flight Number: WN2919. (On Time performance: 50 - Average Delay: 24 minutes)
- Flight Number: WN3308. (On Time performance: 45 - Average Delay: 23 minutes)
- Flight Number: WN519. (On Time performance: 76 - Average Delay: 9 minutes)
Alaska Airlines
- Flight Number: AS154. (On Time performance: 56 - Average Delay: 26 minutes)
- Flight Number: AS535. (On Time performance: 74 - Average Delay: 11 minutes)
- Flight Number: AS615. (On Time performance: 65 - Average Delay: 14 minutes)
- Flight Number: AS643. (On Time performance: 86 - Average Delay: 8 minutes)
- Flight Number: AS682. (On Time performance: 85 - Average Delay: 8 minutes)
- Flight Number: AS787. (On Time performance: 74 - Average Delay: 20 minutes)
Air Transport International
- Flight Number: 8C3381. (On Time performance: 28 - Average Delay: 34 minutes)
Delta Air Lines
- Flight Number: DL1175. (On Time performance: 82 - Average Delay: 22 minutes)
- Flight Number: DL1731. (On Time performance: 80 - Average Delay: 25 minutes)
- Flight Number: DL2740. (On Time performance: 79 - Average Delay: 17 minutes)
- Flight Number: DL317. (On Time performance: 50 - Average Delay: 80 minutes)
Frontier Airlines
- Flight Number: F94545. (On Time performance: 78 - Average Delay: 10 minutes)
United Airlines
- Flight Number: UA1115. (On Time performance: 69 - Average Delay: 19 minutes)
- Flight Number: UA1424. (On Time performance: 94 - Average Delay: 3 minutes)
- Flight Number: UA1729. (On Time performance: 84 - Average Delay: 7 minutes)
- Flight Number: UA2013. (On Time performance: 94 - Average Delay: 5 minutes)
- Flight Number: UA2271. (On Time performance: 88 - Average Delay: 5 minutes)
- Flight Number: UA2651. (On Time performance: 80 - Average Delay: 10 minutes)
- Flight Number: UA618. (On Time performance: 73 - Average Delay: 11 minutes)
Southwest Airlines
- Flight Number: WN2626. (On Time performance: 40 - Average Delay: 26 minutes)
- Flight Number: WN2628. (On Time performance: 64 - Average Delay: 17 minutes)
- Flight Number: WN2919. (On Time performance: 50 - Average Delay: 24 minutes)
- Flight Number: WN3308. (On Time performance: 45 - Average Delay: 23 minutes)
- Flight Number: WN519. (On Time performance: 76 - Average Delay: 9 minutes)
Punctuality and delays
We have gathered data from recent months and present below an analysis of how timely the flights have been.
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
In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from November 22, 2025 to December 01, 2025, we have obtained these figures.
Total number of flights: 5
On Time: 2 ( 40 % )
Moderate Delay: 3 ( 60 % )
Significant Delay: 0 ( 0 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 15 minutes.
Total number of flights: 5
On Time: 2 ( 40 % )
Moderate Delay: 3 ( 60 % )
Significant Delay: 0 ( 0 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 15 minutes.
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 WN856
Date
Departure
Arrival
Duration
Aircraft
Status
Sunday
21 December
21 December
07:54 am
Denver (DEN)
Denver (DEN)
09:57 am
Seattle (SEA)
Seattle (SEA)
03h 03min
Boeing 737-800
Boeing 737-800
Landed - On-time
Saturday
20 December
20 December
08:09 am
Denver (DEN)
Denver (DEN)
10:34 am
Seattle (SEA)
Seattle (SEA)
03h 25min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Friday
19 December
19 December
08:02 am
Denver (DEN)
Denver (DEN)
10:57 am
Seattle (SEA)
Seattle (SEA)
03h 55min
Boeing 737-800
Boeing 737-800
Landed - Delayed
Monday
01 December
01 December
07:55 am
Denver (DEN)
Denver (DEN)
09:58 am
Seattle (SEA)
Seattle (SEA)
03h 03min
Boeing 737-800
Boeing 737-800
Landed - On-time
Saturday
29 November
29 November
07:58 am
Denver (DEN)
Denver (DEN)
10:15 am
Seattle (SEA)
Seattle (SEA)
03h 17min
Boeing 737-800
Boeing 737-800
Landed - Delayed
Wednesday
26 November
26 November
07:49 am
Denver (DEN)
Denver (DEN)
10:18 am
Seattle (SEA)
Seattle (SEA)
03h 29min
Boeing 737-800
Boeing 737-800
Landed - Delayed
Tuesday
25 November
25 November
07:52 am
Denver (DEN)
Denver (DEN)
10:23 am
Seattle (SEA)
Seattle (SEA)
03h 31min
Boeing 737-800
Boeing 737-800
Landed - Delayed
