Apparatus

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flight_takeoff Flight

UAL404

Operated by United Airlines

Live map

Live map filtered to UAL404. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
12:10 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
290° / 13 kt
Visibility
10 SM
Ceiling
FEW 600 ft, SCT 900 ft, BKN 11,000 ft, OVC 20,000 ft
Temp / Dew
16°C / 13°C
Altimeter
30.04 inHg

Obs: 2026-08-28T18:56:00.000Z

Raw METAR / TAF 
METAR KSFO 281856Z 29013KT 10SM FEW006 SCT009 BKN110 OVC200 16/13 A3004 RMK AO2 SLP171 T01610133

TAF KSFO 281739Z 2818/2924 30012KT P6SM VCSH BKN120 FM282000 29016KT P6SM VCSH BKN100 FM290700 29010KT P6SM FEW012 FM291000 29008KT P6SM SCT012 FM291800 29015KT P6SM FEW015

Arrival

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
13:10 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
270° / 6 kt
Visibility
10 SM
Ceiling
FEW 10,000 ft, SCT 15,000 ft, BKN 22,000 ft
Temp / Dew
33°C / 4°C
Altimeter
30.14 inHg

Obs: 2026-08-28T18:53:00.000Z

Raw METAR / TAF 
METAR KDEN 281853Z 27006KT 10SM FEW100 SCT150 BKN220 33/04 A3014 RMK AO2 SLP115 T03280039

TAF KDEN 281722Z 2818/2924 26006KT P6SM FEW100 SCT150 FM282100 33008KT P6SM FEW100 SCT120 TEMPO 2821/2824 VRB15G35KT -SHRA BKN080 FM290000 01009KT P6SM FEW100 BKN120 PROB30 2900/2902 VRB15G35KT -SHRA BKN080 FM290200 16006KT P6SM SCT120 BKN220 FM290500 22009KT P6SM FEW120 SCT220 FM291600 25007KT P6SM FEW110 SCT200 FM291900 25010KT P6SM VCSH SCT100 BKN150 PROB30 2920/2924 VRB20G35KT -TSRA BKN080CB

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 AC6118 SFO → DEN Jul 26, 21:10 UTCJul 26, 21:50 UTC40m - -
2026-07-26 A44964 SFO → DEN Jul 26, 00:30 UTCJul 26, 03:35 UTC3h 5m - -
2026-07-25 AB28D7 SFO → DEN Jul 25, 21:35 UTCJul 25, 22:15 UTC40m - -
2026-07-25 A449CB SFO → DEN Jul 25, 00:25 UTCJul 25, 03:25 UTC3h 0m - -
2026-07-24 AB0ED6 SFO → DEN Jul 24, 21:30 UTCJul 24, 22:15 UTC45m - -
2026-07-24 A4493D SFO → DEN Jul 24, 00:15 UTCJul 24, 03:05 UTC2h 50m - -
2026-07-23 AC4ACE SFO → DEN Jul 23, 21:40 UTCJul 23, 22:15 UTC35m - -
2026-07-22 A4495C SFO → DEN Jul 22, 23:55 UTCJul 23, 02:50 UTC2h 55m - -
2026-07-22 AC4717 SFO → DEN Jul 22, 21:25 UTCJul 22, 22:05 UTC40m - -
2026-07-21 AB3655 SFO → DEN Jul 21, 22:30 UTCJul 21, 23:10 UTC40m - -
2026-07-21 AB3655 SFO → DEN Jul 21, 22:28 UTCJul 21, 23:05 UTC37m +70m +2m
2026-07-21 A12AA5 SFO → DEN Jul 21, 00:00 UTCJul 21, 03:15 UTC3h 15m - -
2026-07-20 AB890A SFO → DEN Jul 20, 21:35 UTCJul 20, 22:20 UTC45m - -
2026-07-19 A12B4C SFO → DEN Jul 19, 23:45 UTCJul 20, 03:10 UTC3h 25m - -
2026-07-19 AB48E8 SFO → DEN Jul 19, 21:10 UTCJul 19, 21:45 UTC35m - -
2026-07-19 A609D4 - Jul 19, 00:30 UTCJul 19, 01:05 UTC35m - -
2026-07-18 A12B4D - Jul 18, 00:35 UTCJul 18, 03:50 UTC3h 16m - -
2026-07-18 A12B4D IAH → EWR Jul 18, 00:21 UTCJul 18, 03:51 UTC3h 30m +63m +65m
2026-07-17 ABA30B - Jul 17, 21:30 UTCJul 17, 22:05 UTC35m - -
2026-07-17 A5D643 - Jul 17, 00:20 UTCJul 17, 03:14 UTC2h 55m - -
2026-07-16 AB5DD4 - Jul 16, 21:25 UTCJul 16, 22:10 UTC45m - -
2026-07-16 A44917 - Jul 16, 03:30 UTCJul 16, 06:30 UTC3h 0m - -
2026-07-16 A44917 IAH → EWR Jul 16, 03:26 UTCJul 16, 06:27 UTC3h 1m +248m +230m
2026-07-15 AAEB0E - Jul 15, 21:45 UTCJul 15, 22:20 UTC35m - -
2026-07-14 A2BBA4 - Jul 14, 23:35 UTCJul 15, 02:55 UTC3h 20m - -
2026-07-14 ABB440 - Jul 14, 21:25 UTCJul 14, 22:05 UTC40m - -
2026-07-13 ABB7F7 - Jul 13, 23:20 UTCJul 14, 00:05 UTC45m - -
2026-07-13 A44964 - Jul 13, 00:30 UTCJul 13, 04:05 UTC3h 35m - -
2026-07-13 A44964 IAH → EWR Jul 13, 00:24 UTCJul 13, 04:02 UTC3h 38m +66m -1m
2026-07-12 AAFDA1 - Jul 12, 21:55 UTCJul 12, 22:50 UTC55m - -

Performance history

Flights tracked
208 showing last 30
Avg arrival delay
+74m
On-time arrival
50% 50% on time
Aircraft used
25

Monthly activity 4 months

Month Flights tracked
July 2026 48
June 2026 60
May 2026 60
April 2026 40

UAL404 frequently asked

Where does flight UAL404 fly?
UAL404 (United Airlines) flies from SFO to DEN. View the full route page.
How long is flight UAL404?
Based on observed flights, UAL404 takes on average 1h 51m from takeoff to landing.
How often does UAL404 fly?
UAL404 has been observed flying several times a week in our tracking data. We've recorded 208 flights under this callsign.
Is flight UAL404 usually on time?
Across recent flights, UAL404 arrives with an average 74-minute delay. 50% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL404?
UAL404 has been operated by 25 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL404 live?
Yes. When UAL404 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.