United Airlines UA551 Flight Status Today

Domestic flight United Airlines UA551 takes off from Saint Louis (STL) United States to Denver (DEN) United States. It's operated by United Airlines. The plane leaves Lambert-St. Louis International Airport at 18:00 08 February 2026 America/Chicago. The flight is expected to land at Denver International Airport at 19:38 08 February 2026 America/Denver. The flight will last about 2 hours 38 minutes.

Current status of UA551 is Scheduled On time Estimated Depart in 3 hours, 37 minutes

UA551 - UAL551 United Airlines (UA)
STL Saint Louis United States
Flight STL to DEN
DEN Denver United States
Scheduled On time Estimated Depart in 3 hours, 37 minutes
Departure Lambert-St. Louis International Airport
IATA: STLICAO: KSTL
Scheduled 18:00 08 February 2026
Estimated 18:00 08 February 2026
1 A19
Arrival Denver International Airport
IATA: DENICAO: KDEN
Scheduled 19:38 08 February 2026
Estimated 19:38 08 February 2026
None A32
UA551 Detail
  • Type: Domestic Flight
  • Code Shares: AC 4897
  • Flight Duration: 2 hours 38 minutes
  • Flight Distance: 1238 kms / 769 miles
Airline
  • United Airlines
  • IATA: UA
  • ICAO: UAL
  • Operating Days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
Passenger Services
  • Service type: Normal passenger
  • Seats: 128
  • Freight capacity: 6.7 tons
  • Passenger classes: First Class, Economy, Business Class, Shuttle
More Detail
  • Aircraft: Boeing 737-800 (Scimitar Winglets) Passenger
  • Callsign: F-KLEX5
  • Departure Timezone: America/Chicago
  • Arrival Timezone: America/Denver
  • Current Time in Saint Louis: Sunday 2026-02-08 14:23 PM
  • Current Time in Denver: Sunday 2026-02-08 13:23 PM

United Airlines UA551 Flight Statistics

United Airlines
United Airlines
FLIGHT NO UA551
AIRPLANE Boeing 737-800 (Scimitar Winglets) Passenger
ON TIME 13
DELAYED 1
CANCELLED 0
ON TIME 25
DELAYED 1
CANCELLED 0
ON TIME 35
DELAYED 5
CANCELLED 0
ON TIME 60
DELAYED 9
CANCELLED 1
Last 14 days flight data
14 30 60 90
On Time Rate

United Airlines UA551 Flight Schedule and Histories

Time Departure Arrival Actual departure Actual arrival
Sun 08 Feb
Scheduled On time
Saint Louis (STL) 2026-02-08T18:00
Denver (DEN) 2026-02-08T19:38
Sat 07 Feb
Arrived On time
Saint Louis (STL) 2026-02-07T07:15
Denver (DEN) 2026-02-07T09:03
2026-02-07T07:06
2026-02-07T08:54
Fri 06 Feb
Arrived On time
Saint Louis (STL) 2026-02-06T18:00
Denver (DEN) 2026-02-06T19:38
2026-02-06T17:53
2026-02-06T19:24
Thu 05 Feb
Arrived On time
Saint Louis (STL) 2026-02-05T18:00
Denver (DEN) 2026-02-05T19:38
2026-02-05T18:02
2026-02-05T19:40
Wed 04 Feb
Arrived On time
Saint Louis (STL) 2026-02-04T18:00
Denver (DEN) 2026-02-04T19:38
2026-02-04T17:56
2026-02-04T19:22
Sun 01 Feb
Arrived On time
Saint Louis (STL) 2026-02-01T18:00
Denver (DEN) 2026-02-01T19:38
2026-02-01T17:50
2026-02-01T19:23
Sat 31 Jan
Arrived Delayed by 18m
Saint Louis (STL) 2026-01-31T07:15
Denver (DEN) 2026-01-31T09:03
2026-01-31T07:11
2026-01-31T09:21
Fri 30 Jan
Arrived Delayed by 21m
Saint Louis (STL) 2026-01-30T18:00
Denver (DEN) 2026-01-30T19:38
2026-01-30T18:29
2026-01-30T19:59
Thu 29 Jan
Arrived On time
Saint Louis (STL) 2026-01-29T18:00
Denver (DEN) 2026-01-29T19:38
2026-01-29T17:52
2026-01-29T19:14
Wed 28 Jan
Arrived On time
Saint Louis (STL) 2026-01-28T18:00
Denver (DEN) 2026-01-28T19:38
2026-01-28T17:57
2026-01-28T19:43

Flight routes similar to United Airlines UA551

Airline Flight no Departure Arrival
Southwest Airlines WN4616
Southwest Airlines 		08/02/2026
14:35 		2 hours 25 minutes
16:00
United Airlines UA1396
United Airlines 		08/02/2026
08:45 		2 hours 36 minutes
10:21
Air Canada AC4897
Air Canada 		08/02/2026
18:00 		2 hours 38 minutes
19:38
Southwest Airlines WN2140
Southwest Airlines 		08/02/2026
10:35 		2 hours 35 minutes
12:10
Air Canada AC4948
Air Canada 		08/02/2026
08:45 		2 hours 36 minutes
10:21
Air Canada AC4886
Air Canada 		08/02/2026
14:45 		2 hours 39 minutes
16:24
Southwest Airlines WN2143
Southwest Airlines 		08/02/2026
06:20 		2 hours 30 minutes
07:50
Frontier Airlines F93301
Frontier Airlines 		08/02/2026
12:03 		2 hours 33 minutes
13:36

United Airlines Flight UA551 FAQs

What is the scheduled flight duration for United Airlines UA551 flight?

On average, nonstop flight takes 2 hour(s) 38 minutes, with the flight distance of 1238 km (769 miles).

What is the current status of United Airlines UA551 flight?

The current status of flight United Airlines UA551 is Scheduled On time.

What type of aircraft is used for the United Airlines UA551 flight?

All United Airlines UA551 flights are operated using Boeing 737-800 (Scimitar Winglets) Passenger aircraft.

How many United Airlines UA551 flights are operated a week?

7 flights per week. The Flight United Airlines UA551 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday .