United Airlines flight UA 439: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Wed,Thu 08:15 Fort Lauderdale (FLL) 1 11:19 Newark Liberty, New York (EWR) C
UA 439 Non-stop Boeing 737-900 (739) 3:04 Effective 2026-03-11 through 2026-03-12
Sat 09:00 Washington Dulles (IAD) 11:40 Jackson (JAC)
UA 439 Non-stop Boeing 737-700 (73G) 4:40 Effective 2026-03-07 through 2026-03-28
Daily 11:45 Denver (DEN) 13:30 Idaho Falls (IDA)
UA 439 Non-stop Airbus A319 (319) 1:45 Valid until 2026-01-05
Wed,Thu 12:52 Newark Liberty, New York (EWR) C 16:13 Austin (AUS)
UA 439 Non-stop Boeing 737-900 (739) 4:21 Effective 2026-03-11 through 2026-03-12
Sat 13:51 San Francisco (SFO) 3 21:33 Atlanta (ATL) N
UA 439 Non-stop Boeing 737-800 (738) 4:42 Effective 2026-01-10 through 2026-02-07
Sat 14:48 Houston George Bush (IAH) C 16:14 McAllen/Mission (MFE)
UA 439 Non-stop Airbus A320 (320) 1:26 Effective 2026-02-14 through 2026-02-28
Tue,Wed 18:11 Austin (AUS) 19:36 Denver (DEN)
UA 439 Non-stop Airbus A319 (319) 2:25 Effective 2026-01-06 through 2026-02-11
Mon,Thu,Fri,Sun 18:15 Austin (AUS) 19:40 Denver (DEN)
UA 439 Non-stop Airbus A319 (319) 2:25 Effective 2026-01-08 through 2026-02-09
Mon-Fri,Sun 18:19 Austin (AUS) 19:44 Denver (DEN)
UA 439 Non-stop Airbus A319 (319) 2:25 Effective 2026-02-12 through 2026-02-19
Mon-Fri,Sun 18:19 Austin (AUS) 19:44 Denver (DEN)
UA 439 Non-stop Airbus A319 (319) 2:25 Effective 2026-02-22 through 2026-03-10
Mon-Fri,Sun 18:19 Austin (AUS) 19:44 Denver (DEN)
UA 439 Non-stop Airbus A319 (319) 2:25 Effective 2026-03-12 through 2026-03-27
Fri 18:20 Austin (AUS) 19:45 Denver (DEN)
UA 439 Non-stop Airbus A319 (319) 2:25 Operates only on 2026-02-20
Daily 18:20 Austin (AUS) 19:40 Denver (DEN)
UA 439 Non-stop Airbus A319 (319) 2:20 Effective 2026-04-30 through 2026-05-20
Daily 18:20 Austin (AUS) 19:40 Denver (DEN)
UA 439 Non-stop Boeing 737-800 (738) 2:20 Effective from 2026-05-21
Daily 18:21 Austin (AUS) 19:54 Denver (DEN)
UA 439 Non-stop Airbus A319 (319) 2:33 Effective 2026-03-29 through 2026-04-29
Wed 18:28 Austin (AUS) 19:51 Denver (DEN)
UA 439 Non-stop Boeing 737-900 (739) 2:23 Operates only on 2026-03-11
Non-Direct Flights:
Wed,Thu 08:15 Fort Lauderdale (FLL) 1 16:13 Austin (AUS)
UA 439 1-stop Boeing 737-900 (739) 8:58 Effective 2026-03-11 through 2026-03-12
Wed 12:52 Newark Liberty, New York (EWR) C 19:51 Denver (DEN)
UA 439 1-stop Boeing 737-900 (739) 8:59 Operates only on 2026-03-11
Thu 12:52 Newark Liberty, New York (EWR) C 19:44 Denver (DEN)
UA 439 1-stop Boeing 737-900 (739) 8:52 Operates only on 2026-03-12
Wed 08:15 Fort Lauderdale (FLL) 1 19:51 Denver (DEN)
UA 439 2-stop Boeing 737-900 (739) 13:36 Operates only on 2026-03-11
Thu 08:15 Fort Lauderdale (FLL) 1 19:44 Denver (DEN)
UA 439 2-stop Boeing 737-900 (739) 13:29 Operates only on 2026-03-12
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This flight number is listed as serving the following routes:


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United Airlines flight UA 439: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA439
08:15
Fort Lauderdale (FLL) 1

11:19
Newark Liberty, New York (EWR) C
Effective 2026-03-11 through 2026-03-12
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:04, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA439
09:00
Washington Dulles (IAD)

11:40
Jackson (JAC)
Effective 2026-03-07 through 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:40, non-stop
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA439
11:45
Denver (DEN)

13:30
Idaho Falls (IDA)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA439
12:52
Newark Liberty, New York (EWR) C

16:13
Austin (AUS)
Effective 2026-03-11 through 2026-03-12
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:21, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA439
13:51
San Francisco (SFO) 3

21:33
Atlanta (ATL) N
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:42, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA439
14:48
Houston George Bush (IAH) C

16:14
McAllen/Mission (MFE)
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:26, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA439
18:11
Austin (AUS)

19:36
Denver (DEN)
Effective 2026-01-06 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA439
18:15
Austin (AUS)

19:40
Denver (DEN)
Effective 2026-01-08 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA439
18:19
Austin (AUS)

19:44
Denver (DEN)
Effective 2026-02-12 through 2026-02-19
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA439
18:19
Austin (AUS)

19:44
Denver (DEN)
Effective 2026-02-22 through 2026-03-10
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA439
18:19
Austin (AUS)

19:44
Denver (DEN)
Effective 2026-03-12 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA439
18:20
Austin (AUS)

19:45
Denver (DEN)
Operates only on 2026-02-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA439
18:20
Austin (AUS)

19:40
Denver (DEN)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:20, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA439
18:20
Austin (AUS)

19:40
Denver (DEN)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:20, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA439
18:21
Austin (AUS)

19:54
Denver (DEN)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:33, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA439
18:28
Austin (AUS)

19:51
Denver (DEN)
Operates only on 2026-03-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:23, non-stop
Boeing 737-900 (739)
Non-Direct Flights:
United Airlines UA439
08:15
Fort Lauderdale (FLL) 1

16:13
Austin (AUS)
Effective 2026-03-11 through 2026-03-12
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 8:58, 1-stop
Boeing 737-900 (739)
Non-Direct Flights:
United Airlines UA439
12:52
Newark Liberty, New York (EWR) C

19:51
Denver (DEN)
Operates only on 2026-03-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 8:59, 1-stop
Boeing 737-900 (739)
Non-Direct Flights:
United Airlines UA439
12:52
Newark Liberty, New York (EWR) C

19:44
Denver (DEN)
Operates only on 2026-03-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 8:52, 1-stop
Boeing 737-900 (739)
Non-Direct Flights:
United Airlines UA439
08:15
Fort Lauderdale (FLL) 1

19:51
Denver (DEN)
Operates only on 2026-03-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 13:36, 2-stop
Boeing 737-900 (739)
Non-Direct Flights:
United Airlines UA439
08:15
Fort Lauderdale (FLL) 1

19:44
Denver (DEN)
Operates only on 2026-03-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 13:29, 2-stop
Boeing 737-900 (739)
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This flight number is listed as serving the following routes:
  • Austin (AUS) - Denver (DEN)
  • Denver (DEN) - Idaho Falls (IDA)
  • Fort Lauderdale (FLL) - Austin (AUS)
  • Fort Lauderdale (FLL) - Denver (DEN)
  • Fort Lauderdale (FLL) - Newark Liberty, New York (EWR)
  • Houston George Bush (IAH) - McAllen/Mission (MFE)
  • Newark Liberty, New York (EWR) - Austin (AUS)
  • Newark Liberty, New York (EWR) - Denver (DEN)
  • San Francisco (SFO) - Atlanta (ATL)
  • Washington Dulles (IAD) - Jackson (JAC)
All United Airlines flights
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