United Airlines UA644 Flight Status : Live Tracking & Updates

Domestic flight United Airlines UA644 takes off from Philadelphia (PHL) United States to Denver (DEN) United States. It's operated by United Airlines. The plane leaves Philadelphia International Airport at 08:00 25 May 2026 America/New_York. The flight is expected to land at Denver International Airport at 10:01 25 May 2026 America/Denver. The flight will last about 4 hours 1 minutes.

Current status of UA644 is Departed On time Estimated Arrival in 3 hours, 20 minutes

UA644 - UAL644 United Airlines (UA)
PHL Philadelphia United States
Flight PHL to DEN
DEN Denver United States
Departed On time Estimated Arrival in 3 hours, 20 minutes
Departure Philadelphia International Airport
IATA: PHLICAO: KPHL
Scheduled 08:00 25 May 2026
Actual 07:41 25 May 2026
D D7
Arrival Denver International Airport
IATA: DENICAO: KDEN
Scheduled 10:01 25 May 2026
Estimated 09:46 25 May 2026
None B38
UA644 Detail
  • Type: Domestic Flight
  • Code Shares: AC 3647
  • Flight Duration: 4 hours 1 minutes
  • Flight Distance: 2507 kms / 1558 miles
Airline
  • United Airlines
  • IATA: UA
  • ICAO: UAL
  • Operating Days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
Passenger Services
  • Service type: Normal passenger
  • Seats: 167
  • Freight capacity: 17.1 tons
  • Passenger classes: First Class, Economy, Business Class, Shuttle
More Detail
  • Aircraft: Boeing 737MAX 8 Passenger
  • Callsign: F-KDTN1
  • Departure Timezone: America/New_York
  • Arrival Timezone: America/Denver
  • Current Time in Philadelphia: Monday 2026-05-25 08:26 AM
  • Current Time in Denver: Monday 2026-05-25 06:26 AM

United Airlines UA644 Flight Statistics

United Airlines
United Airlines
FLIGHT NO UA644
AIRPLANE Boeing 737MAX 8 Passenger
ON TIME 14
DELAYED 0
CANCELLED 0
ON TIME 29
DELAYED 1
CANCELLED 0
ON TIME 54
DELAYED 4
CANCELLED 2
ON TIME 76
DELAYED 5
CANCELLED 2
Last 14 days flight data
14 30 60 90
On Time Rate

United Airlines UA644 Flight Schedule and Histories

Time Departure Arrival Actual departure Actual arrival
Mon 25 May
Scheduled
Philadelphia (PHL) 2026-05-25 08:00
Denver (DEN) 2026-05-25 10:01
Sun 24 May
Scheduled On time
Philadelphia (PHL) 2026-05-24T08:00
Denver (DEN) 2026-05-24T10:01
Thu 21 May
Departed On time
Philadelphia (PHL) 2026-05-21T08:00
Denver (DEN) 2026-05-21T10:01
2026-05-21T08:14
Sun 17 May
Scheduled On time
Philadelphia (PHL) 2026-05-17T08:25
Denver (DEN) 2026-05-17T10:28
Fri 15 May
Scheduled Delayed by 40m
Philadelphia (PHL) 2026-05-15T08:25
Denver (DEN) 2026-05-15T10:28
Thu 14 May
Arrived On time
Philadelphia (PHL) 2026-05-14T11:27
Denver (DEN) 2026-05-14T13:15
2026-05-14T11:21
2026-05-14T13:06
Sun 10 May
Arrived On time
Philadelphia (PHL) 2026-05-10T11:27
Denver (DEN) 2026-05-10T13:15
2026-05-10T11:24
2026-05-10T13:06
Sat 09 May
Scheduled On time
Philadelphia (PHL) 2026-05-09T11:27
Denver (DEN) 2026-05-09T13:15
Fri 08 May
Scheduled On time
Philadelphia (PHL) 2026-05-08T11:27
Denver (DEN) 2026-05-08T13:15
Thu 07 May
Arrived On time
Philadelphia (PHL) 2026-05-07T11:27
Denver (DEN) 2026-05-07T13:15
2026-05-07T11:23
2026-05-07T13:10

Flight routes similar to United Airlines UA644

Airline Flight no Departure Arrival
American Airlines AA1759
American Airlines 		25/05/2026
10:44 		4 hours 16 minutes
13:00
American Airlines AA3158
American Airlines 		25/05/2026
17:30 		4 hours 1 minutes
19:44
Air Canada AC3651
Air Canada 		25/05/2026
10:00 		4 hours 0 minutes
12:01
United Airlines UA1537
United Airlines 		25/05/2026
10:00 		4 hours 1 minutes
12:01
Air Canada AC3647
Air Canada 		25/05/2026
08:00 		4 hours 1 minutes
10:01
American Airlines AA3312
American Airlines 		25/05/2026
08:46 		4 hours 22 minutes
11:08
Air Canada AC3648
Air Canada 		25/05/2026
16:14 		4 hours 12 minutes
18:25
United Airlines UA2644
United Airlines 		25/05/2026
16:14 		4 hours 1 minutes
18:25

United Airlines Flight UA644 FAQs

What is the scheduled flight duration for United Airlines UA644 flight?

On average, nonstop flight takes 4 hour(s) 1 minutes, with the flight distance of 2507 km (1558 miles).

What is the current status of United Airlines UA644 flight?

The current status of flight United Airlines UA644 is Departed On time.

What type of aircraft is used for the United Airlines UA644 flight?

All United Airlines UA644 flights are operated using Boeing 737MAX 8 Passenger aircraft.

How many United Airlines UA644 flights are operated a week?

7 flights per week. The Flight United Airlines UA644 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday .