United Airlines flight UA 1643: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 07:10 Chicago O'Hare (ORD) 1 09:50 Seattle-Tacoma (SEA) UA 1643 Non-stop Boeing 737-800 (738) 4:40 Effective 2025-05-22 through 2025-06-02
Tue,Wed 07:10 Chicago O'Hare (ORD) 1 09:49 Seattle-Tacoma (SEA) UA 1643 Non-stop Airbus A321neo (32Q) 4:39 Effective 2025-06-03 through 2025-06-25
Mon,Thu,Fri 07:10 Chicago O'Hare (ORD) 1 09:50 Seattle-Tacoma (SEA) UA 1643 Non-stop Boeing 737-800 (738) 4:40 Effective 2025-06-05 through 2025-06-23
Sat 07:10 Chicago O'Hare (ORD) 1 09:50 Seattle-Tacoma (SEA) UA 1643 Non-stop Airbus A319 (319) 4:40 Operates only on 2025-06-07
Sat,Sun 07:10 Chicago O'Hare (ORD) 1 09:50 Seattle-Tacoma (SEA) UA 1643 Non-stop Boeing 737-700 (73G) 4:40 Effective 2025-06-08 through 2025-06-22
Mon,Thu,Fri 07:10 Chicago O'Hare (ORD) 1 09:50 Seattle-Tacoma (SEA) UA 1643 Non-stop Boeing 737-900 (739) 4:40 Effective 2025-06-26 through 2025-08-18
Sat,Sun 07:10 Chicago O'Hare (ORD) 1 09:50 Seattle-Tacoma (SEA) UA 1643 Non-stop Boeing 737-800 (738) 4:40 Effective 2025-06-28 through 2025-08-17
Tue,Wed 07:10 Chicago O'Hare (ORD) 1 09:50 Seattle-Tacoma (SEA) UA 1643 Non-stop Airbus A321neo (32Q) 4:40 Effective 2025-07-01 through 2025-08-13
Daily 14:00 Orlando (MCO) B 16:45 Newark Liberty, New York (EWR) C UA 1643 Non-stop Boeing 737-900 (739) 2:45 Effective 2025-09-25 through 2025-10-25
Daily 14:11 Orlando (MCO) B 17:01 Newark Liberty, New York (EWR) C UA 1643 Non-stop Boeing 737-900 (739) 2:50 Effective from 2025-10-26
Sun 14:35 Orlando (MCO) B 17:29 Newark Liberty, New York (EWR) A UA 1643 Non-stop Boeing 737-900 (739) 2:54 Operates only on 2025-05-04
Mon-Fri 14:36 Orlando (MCO) B 17:30 Newark Liberty, New York (EWR) C UA 1643 Non-stop Boeing 737-900 (739) 2:54 Valid until 2025-05-09
Sat 14:36 Orlando (MCO) B 17:30 Newark Liberty, New York (EWR) C UA 1643 Non-stop Boeing 737 MAX 9 (7M9) 2:54 Effective 2025-05-03 through 2025-05-10
Daily 14:36 Orlando (MCO) B 17:30 Newark Liberty, New York (EWR) C UA 1643 Non-stop Boeing 737-900 (739) 2:54 Effective 2025-05-11 through 2025-05-21

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Parallax here -

This flight number is listed as serving the following routes:

Chicago O'Hare (ORD) - Seattle-Tacoma (SEA)
Orlando (MCO) - Newark Liberty, New York (EWR)

All United Airlines flights

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United Airlines flight UA 1643: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

United Airlines UA1643

07:10

Chicago O'Hare (ORD) 1

09:50

Seattle-Tacoma (SEA)

Effective 2025-05-22 through 2025-06-02

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 4:40, non-stop
Boeing 737-800 (738)

United Airlines UA1643

07:10

Chicago O'Hare (ORD) 1

09:49

Seattle-Tacoma (SEA)

Effective 2025-06-03 through 2025-06-25

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:39, non-stop
Airbus A321neo (32Q)

United Airlines UA1643

07:10

Chicago O'Hare (ORD) 1

09:50

Seattle-Tacoma (SEA)

Effective 2025-06-05 through 2025-06-23

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:40, non-stop
Boeing 737-800 (738)

United Airlines UA1643

07:10

Chicago O'Hare (ORD) 1

09:50

Seattle-Tacoma (SEA)

Operates only on 2025-06-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:40, non-stop
Airbus A319 (319)

United Airlines UA1643

07:10

Chicago O'Hare (ORD) 1

09:50

Seattle-Tacoma (SEA)

Effective 2025-06-08 through 2025-06-22

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun

Duration: 4:40, non-stop
Boeing 737-700 (73G)

United Airlines UA1643

07:10

Chicago O'Hare (ORD) 1

09:50

Seattle-Tacoma (SEA)

Effective 2025-06-26 through 2025-08-18

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:40, non-stop
Boeing 737-900 (739)

United Airlines UA1643

07:10

Chicago O'Hare (ORD) 1

09:50

Seattle-Tacoma (SEA)

Effective 2025-06-28 through 2025-08-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun

Duration: 4:40, non-stop
Boeing 737-800 (738)

United Airlines UA1643

07:10

Chicago O'Hare (ORD) 1

09:50

Seattle-Tacoma (SEA)

Effective 2025-07-01 through 2025-08-13

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:40, non-stop
Airbus A321neo (32Q)

United Airlines UA1643

14:00

Orlando (MCO) B

16:45

Newark Liberty, New York (EWR) C

Effective 2025-09-25 through 2025-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:45, non-stop
Boeing 737-900 (739)

United Airlines UA1643

14:11

Orlando (MCO) B

17:01

Newark Liberty, New York (EWR) C

Effective from 2025-10-26

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:50, non-stop
Boeing 737-900 (739)

United Airlines UA1643

14:35

Orlando (MCO) B

17:29

Newark Liberty, New York (EWR) A

Operates only on 2025-05-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:54, non-stop
Boeing 737-900 (739)

United Airlines UA1643

14:36

Orlando (MCO) B

17:30

Newark Liberty, New York (EWR) C

Valid until 2025-05-09

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 2:54, non-stop
Boeing 737-900 (739)

United Airlines UA1643

14:36

Orlando (MCO) B

17:30

Newark Liberty, New York (EWR) C

Effective 2025-05-03 through 2025-05-10

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:54, non-stop
Boeing 737 MAX 9 (7M9)

United Airlines UA1643

14:36

Orlando (MCO) B

17:30

Newark Liberty, New York (EWR) C

Effective 2025-05-11 through 2025-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:54, non-stop
Boeing 737-900 (739)

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Parallax here -

This flight number is listed as serving the following routes:

Chicago O'Hare (ORD) - Seattle-Tacoma (SEA)
Orlando (MCO) - Newark Liberty, New York (EWR)

All United Airlines flights

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- CACHE: False - LANG: en - IS_EU: False