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flight_takeoff Flight

UAL8251

Operated by United Airlines

Live map

Live map filtered to UAL8251. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SEA KSEA VFR

Seattle–Tacoma International Airport

Seattle, US

Local time
07:34 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
0° / 0 kt
Visibility
10 SM
Ceiling
FEW 1,500 ft, BKN 3,500 ft, BKN 5,000 ft, BKN 20,000 ft
Temp / Dew
14°C / 12°C
Altimeter
30.07 inHg

Obs: 2026-08-28T13:53:00.000Z

Raw METAR / TAF 
METAR KSEA 281353Z 00000KT 10SM FEW015 BKN035 BKN050 BKN200 14/12 A3007 RMK AO2 SLP188 T01440122 $

TAF KSEA 281124Z 2812/2918 35003KT P6SM FEW020 SCT050 FM281400 18003KT P6SM OVC020 FM281900 22005KT P6SM BKN025 OVC050 FM282100 24006KT P6SM BKN050 FM290200 30006KT P6SM BKN050 FM290800 19007KT P6SM -SHRA OVC035

flight Live Traffic

flight_takeoff 137 Departures
flight_land 210 Arrivals

Arrival

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
08:34 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
240° / 10 kt
Visibility
10 SM
Ceiling
FEW 10,000 ft, FEW 15,000 ft, SCT 22,000 ft
Temp / Dew
22°C / 9°C
Altimeter
30.19 inHg

Obs: 2026-08-28T13:53:00.000Z

Raw METAR / TAF 
METAR KDEN 281353Z 24010KT 10SM FEW100 FEW150 SCT220 22/09 A3019 RMK AO2 PK WND 24028/1303 SLP140 T02220089

TAF KDEN 281339Z 2814/2918 24010KT P6SM FEW100 SCT150 SCT220 FM281600 VRB06KT P6SM FEW120 FM282100 02008KT P6SM FEW100 SCT120 PROB30 2821/2902 VRB15G25KT -SHRA BKN080 FM290200 VRB06KT P6SM SCT120 BKN220 FM290500 22009KT P6SM FEW120 SCT220 FM291600 28007KT P6SM FEW110 SCT200

flight Live Traffic

flight_takeoff 288 Departures
flight_land 424 Arrivals

Recent history last 16

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-25 A94BFC SEA → DEN Jul 25, 04:20 UTCJul 25, 05:15 UTC55m - -
2026-07-23 AB5DD4 SEA → DEN Jul 23, 03:25 UTCJul 23, 04:45 UTC1h 20m - -
2026-07-17 A0B7FB DEN → ORD Jul 17, 02:15 UTCJul 17, 04:04 UTC1h 50m - -
2026-07-17 A0B7FB DEN → ORD Jul 17, 02:00 UTCJul 17, 04:06 UTC2h 6m +20m +16m
2026-07-13 A44540 - Jul 13, 22:15 UTCJul 14, 01:05 UTC2h 50m - -
2026-07-13 A44540 IAH → SAN Jul 13, 22:16 UTCJul 14, 00:55 UTC2h 39m +56m +20m
2026-07-10 AC64CF DEN → XNA Jul 10, 00:35 UTCJul 10, 02:00 UTC1h 25m - -
2026-07-06 A5CA4B SFO → SBA Jul 6, 18:05 UTCJul 6, 19:00 UTC55m - -
2026-07-06 A5CA4B SFO → SBA Jul 6, 18:08 UTCJul 6, 18:53 UTC45m +39m -6m
2026-07-04 A448FA - Jul 4, 23:45 UTCJul 5, 01:40 UTC1h 55m - -
2026-05-29 A59197 SEA → DEN May 29, 05:10 UTCMay 29, 06:55 UTC1h 45m - -
2026-05-29 A59197 SEA → DEN May 29, 05:09 UTCMay 29, 06:49 UTC1h 40m +221m +15m
2026-05-18 A126EB SEA → DEN May 18, 03:25 UTCMay 18, 05:50 UTC2h 25m - -
2026-05-18 A126EB SEA → DEN May 18, 03:18 UTCMay 18, 05:50 UTC2h 32m +20m +2m
2026-04-14 A448D1 - Apr 14, 23:00 UTCApr 14, 23:35 UTC35m - -
2026-04-14 A448D1 - Apr 14, 21:25 UTCApr 14, 22:35 UTC1h 10m - -

Performance history

Flights tracked
16
Avg arrival delay
+9m
On-time arrival
60% 60% on time
Aircraft used
10

Monthly activity 3 months

Month Flights tracked
July 2026 10
May 2026 4
April 2026 2

UAL8251 frequently asked

Where does flight UAL8251 fly?
UAL8251 (United Airlines) flies from SEA to DEN. View the full route page.
How long is flight UAL8251?
Based on observed flights, UAL8251 takes on average 1h 40m from takeoff to landing.
How often does UAL8251 fly?
UAL8251 has been observed flying several times a week in our tracking data. We've recorded 16 flights under this callsign.
Is flight UAL8251 usually on time?
Across recent flights, UAL8251 arrives with an average 9-minute delay. 60% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL8251?
UAL8251 has been operated by 10 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL8251 live?
Yes. When UAL8251 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.