Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
20:32 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
10° / 11 kt
Visibility
10 SM
Ceiling
SCT 5,000 ft, BKN 6,500 ft
Temp / Dew
13°C / 8°C
Altimeter
30.10 inHg

Obs: 2026-05-30T02:53:00.000Z

Raw METAR / TAF 
METAR KSEA 300253Z 01011KT 10SM SCT050 BKN065 13/08 A3010 RMK AO2 SLP200 T01330083 53008 $

TAF KSEA 300300Z 3003/3106 03009KT P6SM SCT050 BKN060 FM301200 14005KT P6SM BKN030 FM301900 28006KT P6SM BKN070 FM302200 31008KT P6SM SCT070 BKN250

flight Live Traffic

flight_takeoff 252 Departures
flight_land 247 Arrivals

Arrival

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
21:32 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
340° / 8 kt
Visibility
10 SM
Ceiling
FEW 7,000 ft, SCT 12,000 ft, BKN 20,000 ft
Temp / Dew
18°C / 8°C
Altimeter
29.80 inHg

Obs: 2026-05-30T02:53:00.000Z

Raw METAR / TAF 
METAR KDEN 300253Z 34008KT 10SM FEW070 SCT120 BKN200 18/08 A2980 RMK AO2 SLP025 T01830078 52002

TAF KDEN 300253Z 3003/3106 34008KT P6SM FEW070 SCT120 BKN200 FM300600 32007KT P6SM FEW100 SCT200 FM300900 25006KT P6SM FEW100 SCT200 FM301400 28009KT P6SM SCT180 FM302100 31012KT P6SM VCSH SCT100 PROB30 3021/3101 VRB15G25KT FM310300 27013KT P6SM FEW080 SCT100

flight Live Traffic

flight_takeoff 496 Departures
flight_land 407 Arrivals

Recent history last 6

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
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
6
Avg arrival delay
+9m
On-time arrival
100% 100% on time
Aircraft used
3

Monthly activity 2 months

Month Flights tracked
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 41m from takeoff to landing.
How often does UAL8251 fly?
UAL8251 has been observed flying occasionally in our tracking data. We've recorded 6 flights under this callsign.
Is flight UAL8251 usually on time?
Across recent flights, UAL8251 arrives with an average 9-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL8251?
UAL8251 has been operated by 3 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.