United Airlines flight UA 2421: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 08:00 San Diego (SAN) 2 15:44 Dulles, Washington (IAD)
UA 2421 Non-stop Boeing 777 (777) 4:44 Effective 2024-10-27 through 2024-12-02
Mon,Sun 11:20 Boston Logan (BOS) B 13:03 Chicago O'Hare (ORD) 1
UA 2421 Non-stop Boeing 737 MAX 8 (7M8) 2:43 Valid until 2024-09-02
Thu 11:20 Boston Logan (BOS) B 13:03 Chicago O'Hare (ORD) 1
UA 2421 Non-stop Boeing 737 MAX 9 (7M9) 2:43 Effective 2024-09-05 through 2024-09-19
Mon,Fri,Sun 11:20 Boston Logan (BOS) B 13:03 Chicago O'Hare (ORD) 1
UA 2421 Non-stop Boeing 737 MAX 8 (7M8) 2:43 Effective 2024-09-06 through 2024-09-09
Fri 11:20 Boston Logan (BOS) B 13:02 Chicago O'Hare (ORD) 1
UA 2421 Non-stop Boeing 737 MAX 9 (7M9) 2:42 Effective 2024-09-13 through 2024-09-20
Sun 11:20 Boston Logan (BOS) B 13:03 Chicago O'Hare (ORD) 1
UA 2421 Non-stop Boeing 737-800 (738) 2:43 Operates only on 2024-09-15
Mon,Sun 11:20 Boston Logan (BOS) B 13:03 Chicago O'Hare (ORD) 1
UA 2421 Non-stop Boeing 737 MAX 8 (7M8) 2:43 Effective 2024-09-16 through 2024-09-23
Mon,Thu,Fri,Sun 14:35 Chicago O'Hare (ORD) 1 17:32 Baltimore (BWI)
UA 2421 Non-stop Boeing 737-800 (738) 1:57 Valid until 2024-09-06
Sun 14:35 Chicago O'Hare (ORD) 1 17:32 Baltimore (BWI)
UA 2421 Non-stop Airbus A319 (319) 1:57 Effective 2024-09-08 through 2024-09-22
Mon,Thu,Fri 14:35 Chicago O'Hare (ORD) 1 17:32 Baltimore (BWI)
UA 2421 Non-stop Boeing 737-800 (738) 1:57 Effective 2024-09-09 through 2024-09-23
Mon,Thu,Fri,Sun 18:38 Baltimore (BWI) 21:30 San Francisco (SFO) 3
UA 2421 Non-stop Boeing 737 MAX 8 (7M8) 5:52 Valid until 2024-09-23
Daily 18:45 Baltimore (BWI) 21:32 San Francisco (SFO) 3
UA 2421 Non-stop Boeing 737 MAX 8 (7M8) 5:47 Effective from 2025-02-13
Mon,Thu,Fri,Sun 18:52 Baltimore (BWI) 21:44 San Francisco (SFO) 3
UA 2421 Non-stop Boeing 737 MAX 8 (7M8) 5:52 Effective 2024-09-26 through 2024-10-25
Mon-Sat 23:59 Phoenix Sky Harbor (PHX) 3 06:07 Dulles, Washington (IAD)
UA 2421 Non-stop Boeing 737 MAX 8 (7M8) 4:08 Effective 2024-12-03 through 2024-12-11
The flight arrives 1 day after departure.
Sun 23:59 Phoenix Sky Harbor (PHX) 3 06:07 Dulles, Washington (IAD)
UA 2421 Non-stop Boeing 737-800 (738) 4:08 Effective 2024-12-08 through 2024-12-15
The flight arrives 1 day after departure.
Mon-Sat 23:59 Phoenix Sky Harbor (PHX) 3 06:07 Dulles, Washington (IAD)
UA 2421 Non-stop Boeing 737-800 (738) 4:08 Effective 2024-12-12 through 2024-12-18
The flight arrives 1 day after departure.
Mon-Fri,Sun 23:59 Phoenix Sky Harbor (PHX) 3 06:14 Dulles, Washington (IAD)
UA 2421 Non-stop Boeing 737-800 (738) 4:15 Effective 2024-12-19 through 2024-12-27
The flight arrives 1 day after departure.
Daily 23:59 Phoenix Sky Harbor (PHX) 3 06:14 Dulles, Washington (IAD)
UA 2421 Non-stop Boeing 737-800 (738) 4:15 Effective 2024-12-28 through 2025-01-06
The flight arrives 1 day after departure.
Non-Direct Flights:
Mon,Sun 11:20 Boston Logan (BOS) B 17:32 Baltimore (BWI)
UA 2421 1-stop Boeing 737 MAX 8 (7M8) 6:12 Valid until 2024-09-02
Thu 11:20 Boston Logan (BOS) B 17:32 Baltimore (BWI)
UA 2421 1-stop Boeing 737 MAX 9 (7M9) 6:12 Effective 2024-09-05 through 2024-09-19
Mon,Fri,Sun 11:20 Boston Logan (BOS) B 17:32 Baltimore (BWI)
UA 2421 1-stop Boeing 737 MAX 8 (7M8) 6:12 Effective 2024-09-06 through 2024-09-09
Fri 11:20 Boston Logan (BOS) B 17:32 Baltimore (BWI)
UA 2421 1-stop Boeing 737 MAX 9 (7M9) 6:12 Effective 2024-09-13 through 2024-09-20
Sun 11:20 Boston Logan (BOS) B 17:32 Baltimore (BWI)
UA 2421 1-stop Boeing 737-800 (738) 6:12 Operates only on 2024-09-15
Mon,Sun 11:20 Boston Logan (BOS) B 17:32 Baltimore (BWI)
UA 2421 1-stop Boeing 737 MAX 8 (7M8) 6:12 Effective 2024-09-16 through 2024-09-23
Mon,Thu,Fri,Sun 14:35 Chicago O'Hare (ORD) 1 21:30 San Francisco (SFO) 3
UA 2421 1-stop Boeing 737-800 (738) 8:55 Valid until 2024-09-06
Sun 14:35 Chicago O'Hare (ORD) 1 21:30 San Francisco (SFO) 3
UA 2421 1-stop Airbus A319 (319) 8:55 Effective 2024-09-08 through 2024-09-22
Mon,Thu,Fri 14:35 Chicago O'Hare (ORD) 1 21:30 San Francisco (SFO) 3
UA 2421 1-stop Boeing 737-800 (738) 8:55 Effective 2024-09-09 through 2024-09-23
Mon,Sun 11:20 Boston Logan (BOS) B 21:30 San Francisco (SFO) 3
UA 2421 2-stop Boeing 737 MAX 8 (7M8) 13:10 Valid until 2024-09-02
Thu 11:20 Boston Logan (BOS) B 21:30 San Francisco (SFO) 3
UA 2421 2-stop Boeing 737 MAX 9 (7M9) 13:10 Effective 2024-09-05 through 2024-09-19
Mon,Fri,Sun 11:20 Boston Logan (BOS) B 21:30 San Francisco (SFO) 3
UA 2421 2-stop Boeing 737 MAX 8 (7M8) 13:10 Effective 2024-09-06 through 2024-09-09
Fri 11:20 Boston Logan (BOS) B 21:30 San Francisco (SFO) 3
UA 2421 2-stop Boeing 737 MAX 9 (7M9) 13:10 Effective 2024-09-13 through 2024-09-20
Sun 11:20 Boston Logan (BOS) B 21:30 San Francisco (SFO) 3
UA 2421 2-stop Boeing 737-800 (738) 13:10 Operates only on 2024-09-15
Mon,Sun 11:20 Boston Logan (BOS) B 21:30 San Francisco (SFO) 3
UA 2421 2-stop Boeing 737 MAX 8 (7M8) 13:10 Effective 2024-09-16 through 2024-09-23
This flight number is listed as serving the following routes:


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United Airlines flight UA 2421: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA2421
08:00
San Diego (SAN) 2

15:44
Dulles, Washington (IAD)
Effective 2024-10-27 through 2024-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:44, non-stop
Boeing 777 (777)
United Airlines UA2421
11:20
Boston Logan (BOS) B

13:03
Chicago O'Hare (ORD) 1
Valid until 2024-09-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:43, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
11:20
Boston Logan (BOS) B

13:03
Chicago O'Hare (ORD) 1
Effective 2024-09-05 through 2024-09-19
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:43, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA2421
11:20
Boston Logan (BOS) B

13:03
Chicago O'Hare (ORD) 1
Effective 2024-09-06 through 2024-09-09
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:43, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
11:20
Boston Logan (BOS) B

13:02
Chicago O'Hare (ORD) 1
Effective 2024-09-13 through 2024-09-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:42, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA2421
11:20
Boston Logan (BOS) B

13:03
Chicago O'Hare (ORD) 1
Operates only on 2024-09-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:43, non-stop
Boeing 737-800 (738)
United Airlines UA2421
11:20
Boston Logan (BOS) B

13:03
Chicago O'Hare (ORD) 1
Effective 2024-09-16 through 2024-09-23
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:43, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
14:35
Chicago O'Hare (ORD) 1

17:32
Baltimore (BWI)
Valid until 2024-09-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:57, non-stop
Boeing 737-800 (738)
United Airlines UA2421
14:35
Chicago O'Hare (ORD) 1

17:32
Baltimore (BWI)
Effective 2024-09-08 through 2024-09-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:57, non-stop
Airbus A319 (319)
United Airlines UA2421
14:35
Chicago O'Hare (ORD) 1

17:32
Baltimore (BWI)
Effective 2024-09-09 through 2024-09-23
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:57, non-stop
Boeing 737-800 (738)
United Airlines UA2421
18:38
Baltimore (BWI)

21:30
San Francisco (SFO) 3
Valid until 2024-09-23
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:52, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
18:45
Baltimore (BWI)

21:32
San Francisco (SFO) 3
Effective from 2025-02-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:47, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
18:52
Baltimore (BWI)

21:44
San Francisco (SFO) 3
Effective 2024-09-26 through 2024-10-25
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:52, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
23:59
Phoenix Sky Harbor (PHX) 3

06:07(+1)
Dulles, Washington (IAD)
Effective 2024-12-03 through 2024-12-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 4:08, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
United Airlines UA2421
23:59
Phoenix Sky Harbor (PHX) 3

06:07(+1)
Dulles, Washington (IAD)
Effective 2024-12-08 through 2024-12-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:08, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
United Airlines UA2421
23:59
Phoenix Sky Harbor (PHX) 3

06:07(+1)
Dulles, Washington (IAD)
Effective 2024-12-12 through 2024-12-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 4:08, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
United Airlines UA2421
23:59
Phoenix Sky Harbor (PHX) 3

06:14(+1)
Dulles, Washington (IAD)
Effective 2024-12-19 through 2024-12-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:15, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
United Airlines UA2421
23:59
Phoenix Sky Harbor (PHX) 3

06:14(+1)
Dulles, Washington (IAD)
Effective 2024-12-28 through 2025-01-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:15, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA2421
11:20
Boston Logan (BOS) B

17:32
Baltimore (BWI)
Valid until 2024-09-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 6:12, 1-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
11:20
Boston Logan (BOS) B

17:32
Baltimore (BWI)
Effective 2024-09-05 through 2024-09-19
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 6:12, 1-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA2421
11:20
Boston Logan (BOS) B

17:32
Baltimore (BWI)
Effective 2024-09-06 through 2024-09-09
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 6:12, 1-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
11:20
Boston Logan (BOS) B

17:32
Baltimore (BWI)
Effective 2024-09-13 through 2024-09-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 6:12, 1-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA2421
11:20
Boston Logan (BOS) B

17:32
Baltimore (BWI)
Operates only on 2024-09-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 6:12, 1-stop
Boeing 737-800 (738)
United Airlines UA2421
11:20
Boston Logan (BOS) B

17:32
Baltimore (BWI)
Effective 2024-09-16 through 2024-09-23
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 6:12, 1-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
14:35
Chicago O'Hare (ORD) 1

21:30
San Francisco (SFO) 3
Valid until 2024-09-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 8:55, 1-stop
Boeing 737-800 (738)
United Airlines UA2421
14:35
Chicago O'Hare (ORD) 1

21:30
San Francisco (SFO) 3
Effective 2024-09-08 through 2024-09-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 8:55, 1-stop
Airbus A319 (319)
United Airlines UA2421
14:35
Chicago O'Hare (ORD) 1

21:30
San Francisco (SFO) 3
Effective 2024-09-09 through 2024-09-23
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 8:55, 1-stop
Boeing 737-800 (738)
United Airlines UA2421
11:20
Boston Logan (BOS) B

21:30
San Francisco (SFO) 3
Valid until 2024-09-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 13:10, 2-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
11:20
Boston Logan (BOS) B

21:30
San Francisco (SFO) 3
Effective 2024-09-05 through 2024-09-19
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 13:10, 2-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA2421
11:20
Boston Logan (BOS) B

21:30
San Francisco (SFO) 3
Effective 2024-09-06 through 2024-09-09
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 13:10, 2-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2421
11:20
Boston Logan (BOS) B

21:30
San Francisco (SFO) 3
Effective 2024-09-13 through 2024-09-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 13:10, 2-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA2421
11:20
Boston Logan (BOS) B

21:30
San Francisco (SFO) 3
Operates only on 2024-09-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 13:10, 2-stop
Boeing 737-800 (738)
United Airlines UA2421
11:20
Boston Logan (BOS) B

21:30
San Francisco (SFO) 3
Effective 2024-09-16 through 2024-09-23
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 13:10, 2-stop
Boeing 737 MAX 8 (7M8)
This flight number is listed as serving the following routes:
  • Baltimore (BWI) - San Francisco (SFO)
  • Boston Logan (BOS) - Baltimore (BWI)
  • Boston Logan (BOS) - Chicago O'Hare (ORD)
  • Boston Logan (BOS) - San Francisco (SFO)
  • Chicago O'Hare (ORD) - Baltimore (BWI)
  • Chicago O'Hare (ORD) - San Francisco (SFO)
  • Phoenix Sky Harbor (PHX) - Dulles, Washington (IAD)
  • San Diego (SAN) - Dulles, Washington (IAD)
All United Airlines flights
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