United Airlines flight UA 1599: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 08:28 Milwaukee (MKE) 10:19 Denver (DEN)
UA 1599 Non-stop Airbus A320 (320) 2:51 Effective 2026-02-12 through 2026-03-04
Daily 09:00 Fargo (FAR) 10:32 Denver (DEN)
UA 1599 Non-stop Airbus A320 (320) 2:32 Effective 2026-01-06 through 2026-02-11
Daily 09:00 Fargo (FAR) 10:18 Denver (DEN)
UA 1599 Non-stop Airbus A319 (319) 2:18 Effective 2026-03-05 through 2026-03-28
Mon-Thu,Sun 09:05 Fargo (FAR) 10:35 Denver (DEN)
UA 1599 Non-stop Airbus A320 (320) 2:30 Valid until 2026-01-05
Fri,Sat 09:05 Fargo (FAR) 10:34 Denver (DEN)
UA 1599 Non-stop Airbus A320 (320) 2:29 Effective 2026-01-02 through 2026-01-03
Daily 11:30 Denver (DEN) 14:58 Houston George Bush (IAH) C
UA 1599 Non-stop Boeing 757-300 (753) 2:28 Effective 2026-04-30 through 2026-05-20
Daily 11:30 Denver (DEN) 14:58 Houston George Bush (IAH) C
UA 1599 Non-stop Boeing 737-900 (739) 2:28 Effective from 2026-05-21
Daily 11:40 Denver (DEN) 15:18 Houston George Bush (IAH) C
UA 1599 Non-stop Airbus A321neo (32Q) 2:38 Effective 2026-03-29 through 2026-04-29
Daily 11:41 Denver (DEN) 15:14 Houston George Bush (IAH) C
UA 1599 Non-stop Boeing 757-300 (753) 2:33 Effective 2026-02-12 through 2026-03-04
Daily 11:50 Denver (DEN) 15:22 Houston George Bush (IAH) C
UA 1599 Non-stop Boeing 737-900 (739) 2:32 Effective 2026-03-05 through 2026-03-28
Sat 18:28 Houston George Bush (IAH) C 21:46 Greenville/Spartanburg (GSP)
UA 1599 Non-stop Boeing 737-700 (73G) 2:18 Effective 2026-05-23 through 2026-06-20
Non-Direct Flights:
Daily 08:28 Milwaukee (MKE) 15:14 Houston George Bush (IAH) C
UA 1599 1-stop Airbus A320 (320) 6:46 Effective 2026-02-12 through 2026-03-04
Daily 09:00 Fargo (FAR) 15:22 Houston George Bush (IAH) C
UA 1599 1-stop Airbus A319 (319) 6:22 Effective 2026-03-05 through 2026-03-28
Sat 11:30 Denver (DEN) 21:46 Greenville/Spartanburg (GSP)
UA 1599 1-stop Boeing 737-900 (739) 8:16 Effective 2026-05-23 through 2026-06-20
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This flight number is listed as serving the following routes:


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United Airlines flight UA 1599: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1599
08:28
Milwaukee (MKE)

10:19
Denver (DEN)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:51, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA1599
09:00
Fargo (FAR)

10:32
Denver (DEN)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:32, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA1599
09:00
Fargo (FAR)

10:18
Denver (DEN)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:18, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1599
09:05
Fargo (FAR)

10:35
Denver (DEN)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 2:30, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA1599
09:05
Fargo (FAR)

10:34
Denver (DEN)
Effective 2026-01-02 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 2:29, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA1599
11:30
Denver (DEN)

14:58
Houston George Bush (IAH) C
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:28, non-stop
Boeing 757-300 (753)
Direct Flights:
United Airlines UA1599
11:30
Denver (DEN)

14:58
Houston George Bush (IAH) C
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:28, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1599
11:40
Denver (DEN)

15:18
Houston George Bush (IAH) C
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:38, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1599
11:41
Denver (DEN)

15:14
Houston George Bush (IAH) C
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:33, non-stop
Boeing 757-300 (753)
Direct Flights:
United Airlines UA1599
11:50
Denver (DEN)

15:22
Houston George Bush (IAH) C
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:32, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1599
18:28
Houston George Bush (IAH) C

21:46
Greenville/Spartanburg (GSP)
Effective 2026-05-23 through 2026-06-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:18, non-stop
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1599
08:28
Milwaukee (MKE)

15:14
Houston George Bush (IAH) C
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:46, 1-stop
Airbus A320 (320)
Non-Direct Flights:
United Airlines UA1599
09:00
Fargo (FAR)

15:22
Houston George Bush (IAH) C
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:22, 1-stop
Airbus A319 (319)
Non-Direct Flights:
United Airlines UA1599
11:30
Denver (DEN)

21:46
Greenville/Spartanburg (GSP)
Effective 2026-05-23 through 2026-06-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 8:16, 1-stop
Boeing 737-900 (739)
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This flight number is listed as serving the following routes:
  • Denver (DEN) - Greenville/Spartanburg (GSP)
  • Denver (DEN) - Houston George Bush (IAH)
  • Fargo (FAR) - Denver (DEN)
  • Fargo (FAR) - Houston George Bush (IAH)
  • Houston George Bush (IAH) - Greenville/Spartanburg (GSP)
  • Milwaukee (MKE) - Denver (DEN)
  • Milwaukee (MKE) - Houston George Bush (IAH)
All United Airlines flights
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