United Airlines flight UA 1640: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat,Sun 10:15 Houston George Bush (IAH) C 12:58 Bozeman (BZN)
UA 1640 Non-stop Airbus A319 (319) 3:43 Effective 2026-03-29 through 2026-04-05
Mon-Sat 10:50 Chicago O'Hare (ORD) 1 13:59 Phoenix Sky Harbor (PHX) 3
UA 1640 Non-stop Boeing 737-900 (739) 4:09 Valid until 2026-01-05
Sun 11:01 Chicago O'Hare (ORD) 1 14:12 Phoenix Sky Harbor (PHX) 3
UA 1640 Non-stop Airbus A321neo (32Q) 4:11 Operates only on 2026-01-04
Mon-Sat 11:05 Chicago O'Hare (ORD) 1 14:16 Phoenix Sky Harbor (PHX) 3
UA 1640 Non-stop Airbus A321neo (32Q) 4:11 Effective 2026-01-07 through 2026-02-11
Sun 11:05 Chicago O'Hare (ORD) 1 14:14 Phoenix Sky Harbor (PHX) 3
UA 1640 Non-stop Boeing 737-900 (739) 4:09 Effective 2026-01-11 through 2026-02-01
Sun 11:05 Chicago O'Hare (ORD) 1 14:14 Phoenix Sky Harbor (PHX) 3
UA 1640 Non-stop Boeing 737 MAX 8 (7M8) 4:09 Operates only on 2026-02-08
Tue 11:20 Chicago O'Hare (ORD) 1 14:31 Phoenix Sky Harbor (PHX) 3
UA 1640 Non-stop Airbus A321neo (32Q) 4:11 Operates only on 2026-01-06
Daily 15:30 Newark Liberty, New York (EWR) C 18:08 Denver (DEN)
UA 1640 Non-stop Airbus A321neo (32Q) 4:38 Effective 2026-02-12 through 2026-03-04
Daily 20:45 Fairbanks (FAI) 05:49 Chicago O'Hare (ORD) 1
UA 1640 Non-stop Boeing 737 MAX 8 (7M8) 6:04 Effective 2026-05-21 through 2026-09-23
The flight arrives 1 day after departure.
Sat 21:43 Las Vegas Harry Reid (LAS) 3 06:30 Newark Liberty, New York (EWR) C
UA 1640 Non-stop Boeing 737 MAX 8 (7M8) 4:47 Operates only on 2026-03-07
The flight arrives 1 day after departure.
Thu,Fri 22:43 Las Vegas Harry Reid (LAS) 3 06:30 Newark Liberty, New York (EWR) C
UA 1640 Non-stop Boeing 737 MAX 8 (7M8) 4:47 Effective 2026-03-05 through 2026-03-06
The flight arrives 1 day after departure.
Daily 22:43 Las Vegas Harry Reid (LAS) 3 06:30 Newark Liberty, New York (EWR) C
UA 1640 Non-stop Boeing 737 MAX 8 (7M8) 4:47 Effective 2026-03-08 through 2026-03-28
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:


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United Airlines flight UA 1640: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1640
10:15
Houston George Bush (IAH) C

12:58
Bozeman (BZN)
Effective 2026-03-29 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 3:43, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1640
10:50
Chicago O'Hare (ORD) 1

13:59
Phoenix Sky Harbor (PHX) 3
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 4:09, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1640
11:01
Chicago O'Hare (ORD) 1

14:12
Phoenix Sky Harbor (PHX) 3
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:11, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1640
11:05
Chicago O'Hare (ORD) 1

14:16
Phoenix Sky Harbor (PHX) 3
Effective 2026-01-07 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 4:11, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1640
11:05
Chicago O'Hare (ORD) 1

14:14
Phoenix Sky Harbor (PHX) 3
Effective 2026-01-11 through 2026-02-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:09, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1640
11:05
Chicago O'Hare (ORD) 1

14:14
Phoenix Sky Harbor (PHX) 3
Operates only on 2026-02-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:09, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1640
11:20
Chicago O'Hare (ORD) 1

14:31
Phoenix Sky Harbor (PHX) 3
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:11, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1640
15:30
Newark Liberty, New York (EWR) C

18:08
Denver (DEN)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:38, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1640
20:45
Fairbanks (FAI)

05:49(+1)
Chicago O'Hare (ORD) 1
Effective 2026-05-21 through 2026-09-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:04, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1640
21:43
Las Vegas Harry Reid (LAS) 3

06:30(+1)
Newark Liberty, New York (EWR) C
Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:47, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1640
22:43
Las Vegas Harry Reid (LAS) 3

06:30(+1)
Newark Liberty, New York (EWR) C
Effective 2026-03-05 through 2026-03-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:47, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1640
22:43
Las Vegas Harry Reid (LAS) 3

06:30(+1)
Newark Liberty, New York (EWR) C
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:47, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Phoenix Sky Harbor (PHX)
  • Fairbanks (FAI) - Chicago O'Hare (ORD)
  • Houston George Bush (IAH) - Bozeman (BZN)
  • Las Vegas Harry Reid (LAS) - Newark Liberty, New York (EWR)
  • Newark Liberty, New York (EWR) - Denver (DEN)
All United Airlines flights
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