Apparatus

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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
00:04 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
220° / 7 kt
Visibility
10 SM
Ceiling
FEW 4,800 ft, SCT 5,500 ft
Temp / Dew
14°C / 11°C
Altimeter
30.11 inHg

Obs: 2026-08-30T06:53:00.000Z

Raw METAR / TAF 
METAR KSEA 300653Z 22007KT 10SM FEW048 SCT055 14/11 A3011 RMK AO2 SLP201 T01440106 $

TAF KSEA 300520Z 3006/3112 22008KT P6SM SCT070 SCT090 FM300900 19005KT P6SM OVC050 FM301500 21006KT P6SM BKN025 OVC035 FM301900 23005KT P6SM SCT025 OVC035 FM302100 27006KT P6SM BKN070 FM310000 01005KT P6SM SCT100 FM310300 36007KT P6SM SCT100

flight Live Traffic

flight_takeoff 133 Departures
flight_land 90 Arrivals

Arrival

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
01:04 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
190° / 7 kt
Visibility
10 SM
Ceiling
SCT 18,000 ft, BKN 22,000 ft
Temp / Dew
17°C / 10°C
Altimeter
30.09 inHg

Obs: 2026-08-30T06:53:00.000Z

Raw METAR / TAF 
METAR KDEN 300653Z 19007KT 10SM SCT180 BKN220 17/10 A3009 RMK AO2 SLP104 T01670100 403390161

TAF KDEN 300536Z 3006/3112 18009KT P6SM FEW100 BKN200 FM301600 26008KT P6SM FEW090 SCT190 FM302000 34010KT P6SM VCSH SCT100 BKN150 TEMPO 3020/3024 VRB20G35KT -TSRA BKN080CB FM310100 03008KT P6SM SCT080 BKN150 FM310400 15010KT P6SM SCT080 BKN150 FM310700 20009KT P6SM FEW080 BKN180

flight Live Traffic

flight_takeoff 116 Departures
flight_land 100 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.