United Airlines flight UA 1731: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 12:15 Las Vegas Harry Reid (LAS) 3 20:07 Newark Liberty, New York (EWR) C
UA 1731 Non-stop Boeing 737 MAX 8 (7M8) 4:52 Effective from 2026-04-30
Daily 12:19 Las Vegas Harry Reid (LAS) 3 20:22 Newark Liberty, New York (EWR) C
UA 1731 Non-stop Boeing 737 MAX 9 (7M9) 5:03 Effective 2026-03-29 through 2026-04-29
Tue 16:17 Jacksonville (JAX) 18:20 Denver (DEN)
UA 1731 Non-stop Boeing 737-900 (739) 4:03 Operates only on 2026-01-06
Daily 16:17 Jacksonville (JAX) 18:20 Denver (DEN)
UA 1731 Non-stop Boeing 737-800 (738) 4:03 Effective 2026-01-07 through 2026-02-11
Daily 19:57 Las Vegas Harry Reid (LAS) 3 21:47 San Francisco (SFO) 3
UA 1731 Non-stop Boeing 737-800 (738) 1:50 Effective 2026-03-05 through 2026-03-28
Daily 20:30 Kona (KOA) 06:09 Denver (DEN)
UA 1731 Non-stop Boeing 777 (777) 6:39 Valid until 2026-01-05
The flight arrives 1 day after departure.
Daily 20:55 Kona (KOA) 06:29 Denver (DEN)
UA 1731 Non-stop Boeing 777 (777) 6:34 Effective 2026-02-12 through 2026-03-04
The flight arrives 1 day after departure.
Daily 21:00 Newark Liberty, New York (EWR) C 22:37 Buffalo (BUF)
UA 1731 Non-stop Airbus A319 (319) 1:37 Effective from 2026-05-21
Non-Direct Flights:
Daily 12:15 Las Vegas Harry Reid (LAS) 3 22:37 Buffalo (BUF)
UA 1731 1-stop Boeing 737 MAX 8 (7M8) 7:22 Effective from 2026-05-21
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This flight number is listed as serving the following routes:


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United Airlines flight UA 1731: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1731
12:15
Las Vegas Harry Reid (LAS) 3

20:07
Newark Liberty, New York (EWR) C
Effective from 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:52, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1731
12:19
Las Vegas Harry Reid (LAS) 3

20:22
Newark Liberty, New York (EWR) C
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:03, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1731
16:17
Jacksonville (JAX)

18:20
Denver (DEN)
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:03, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1731
16:17
Jacksonville (JAX)

18:20
Denver (DEN)
Effective 2026-01-07 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:03, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1731
19:57
Las Vegas Harry Reid (LAS) 3

21:47
San Francisco (SFO) 3
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:50, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1731
20:30
Kona (KOA)

06:09(+1)
Denver (DEN)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:39, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1731
20:55
Kona (KOA)

06:29(+1)
Denver (DEN)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:34, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1731
21:00
Newark Liberty, New York (EWR) C

22:37
Buffalo (BUF)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:37, non-stop
Airbus A319 (319)
Non-Direct Flights:
United Airlines UA1731
12:15
Las Vegas Harry Reid (LAS) 3

22:37
Buffalo (BUF)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:22, 1-stop
Boeing 737 MAX 8 (7M8)
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Parallax here -
This flight number is listed as serving the following routes:
  • Jacksonville (JAX) - Denver (DEN)
  • Kona (KOA) - Denver (DEN)
  • Las Vegas Harry Reid (LAS) - Buffalo (BUF)
  • Las Vegas Harry Reid (LAS) - Newark Liberty, New York (EWR)
  • Las Vegas Harry Reid (LAS) - San Francisco (SFO)
  • Newark Liberty, New York (EWR) - Buffalo (BUF)
All United Airlines flights
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