United Airlines flight UA 424: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Thu 12:45 Seattle-Tacoma (SEA) 15:02 San Francisco (SFO) 3
UA 424 Non-stop Airbus A319 (319) 2:17 Operates only on 2025-05-01
Daily 12:45 Seattle-Tacoma (SEA) 15:02 San Francisco (SFO) 3
UA 424 Non-stop Airbus A320 (320) 2:17 Effective 2025-05-02 through 2025-05-21
Thu,Fri,Sun 15:52 San Francisco (SFO) 3 17:33 Las Vegas Harry Reid (LAS) 3
UA 424 Non-stop Boeing 737 MAX 9 (7M9) 1:41 Valid until 2025-05-18
Mon-Wed,Sat 16:10 San Francisco (SFO) 3 17:51 Las Vegas Harry Reid (LAS) 3
UA 424 Non-stop Boeing 737 MAX 9 (7M9) 1:41 Effective 2025-05-03 through 2025-05-21
Daily 16:35 San Francisco (SFO) 3 22:13 San Antonio (SAT) B
UA 424 Non-stop Airbus A320 (320) 3:38 Effective from 2026-02-12
Daily 16:38 San Francisco (SFO) 3 22:08 San Antonio (SAT) B
UA 424 Non-stop Airbus A319 (319) 3:30 Effective 2025-09-25 through 2025-10-25
Mon-Thu,Sat,Sun 16:43 San Francisco (SFO) 3 22:15 San Antonio (SAT) B
UA 424 Non-stop Airbus A320 (320) 3:32 Effective 2025-05-22 through 2025-06-25
Fri 16:43 San Francisco (SFO) 3 22:15 San Antonio (SAT) B
UA 424 Non-stop Boeing 737-800 (738) 3:32 Effective 2025-05-23 through 2025-06-20
Daily 16:48 San Francisco (SFO) 3 22:15 San Antonio (SAT) B
UA 424 Non-stop Boeing 737-800 (738) 3:27 Effective 2025-06-26 through 2025-08-18
Daily 16:55 San Francisco (SFO) 3 22:23 San Antonio (SAT) B
UA 424 Non-stop Boeing 737-800 (738) 3:28 Effective 2025-08-19 through 2025-09-24
Daily 18:25 San Francisco (SFO) 3 23:49 San Antonio (SAT) B
UA 424 Non-stop Airbus A320 (320) 3:24 Effective 2025-10-26 through 2025-12-01
Daily 18:25 San Francisco (SFO) 3 23:55 San Antonio (SAT) B
UA 424 Non-stop Airbus A320 (320) 3:30 Effective 2025-12-18 through 2026-01-05
Non-Direct Flights:
Thu 12:45 Seattle-Tacoma (SEA) 17:33 Las Vegas Harry Reid (LAS) 3
UA 424 1-stop Airbus A319 (319) 4:48 Operates only on 2025-05-01
Thu,Fri,Sun 12:45 Seattle-Tacoma (SEA) 17:33 Las Vegas Harry Reid (LAS) 3
UA 424 1-stop Airbus A320 (320) 4:48 Effective 2025-05-02 through 2025-05-18
Mon-Wed,Sat 12:45 Seattle-Tacoma (SEA) 17:51 Las Vegas Harry Reid (LAS) 3
UA 424 1-stop Airbus A320 (320) 5:06 Effective 2025-05-03 through 2025-05-21
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This flight number is listed as serving the following routes:


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United Airlines flight UA 424: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA424
12:45
Seattle-Tacoma (SEA)

15:02
San Francisco (SFO) 3
Operates only on 2025-05-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:17, non-stop
Airbus A319 (319)
United Airlines UA424
12:45
Seattle-Tacoma (SEA)

15:02
San Francisco (SFO) 3
Effective 2025-05-02 through 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:17, non-stop
Airbus A320 (320)
United Airlines UA424
15:52
San Francisco (SFO) 3

17:33
Las Vegas Harry Reid (LAS) 3
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:41, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA424
16:10
San Francisco (SFO) 3

17:51
Las Vegas Harry Reid (LAS) 3
Effective 2025-05-03 through 2025-05-21
Mon
Tue
Wed
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:41, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA424
16:35
San Francisco (SFO) 3

22:13
San Antonio (SAT) B
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:38, non-stop
Airbus A320 (320)
United Airlines UA424
16:38
San Francisco (SFO) 3

22:08
San Antonio (SAT) B
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:30, non-stop
Airbus A319 (319)
United Airlines UA424
16:43
San Francisco (SFO) 3

22:15
San Antonio (SAT) B
Effective 2025-05-22 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Duration: 3:32, non-stop
Airbus A320 (320)
United Airlines UA424
16:43
San Francisco (SFO) 3

22:15
San Antonio (SAT) B
Effective 2025-05-23 through 2025-06-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:32, non-stop
Boeing 737-800 (738)
United Airlines UA424
16:48
San Francisco (SFO) 3

22:15
San Antonio (SAT) B
Effective 2025-06-26 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:27, non-stop
Boeing 737-800 (738)
United Airlines UA424
16:55
San Francisco (SFO) 3

22:23
San Antonio (SAT) B
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:28, non-stop
Boeing 737-800 (738)
United Airlines UA424
18:25
San Francisco (SFO) 3

23:49
San Antonio (SAT) B
Effective 2025-10-26 through 2025-12-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:24, non-stop
Airbus A320 (320)
United Airlines UA424
18:25
San Francisco (SFO) 3

23:55
San Antonio (SAT) B
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:30, non-stop
Airbus A320 (320)
Non-Direct Flights:
United Airlines UA424
12:45
Seattle-Tacoma (SEA)

17:33
Las Vegas Harry Reid (LAS) 3
Operates only on 2025-05-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:48, 1-stop
Airbus A319 (319)
United Airlines UA424
12:45
Seattle-Tacoma (SEA)

17:33
Las Vegas Harry Reid (LAS) 3
Effective 2025-05-02 through 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:48, 1-stop
Airbus A320 (320)
United Airlines UA424
12:45
Seattle-Tacoma (SEA)

17:51
Las Vegas Harry Reid (LAS) 3
Effective 2025-05-03 through 2025-05-21
Mon
Tue
Wed
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:06, 1-stop
Airbus A320 (320)
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Parallax here -
This flight number is listed as serving the following routes:
  • San Francisco (SFO) - Las Vegas Harry Reid (LAS)
  • San Francisco (SFO) - San Antonio (SAT)
  • Seattle-Tacoma (SEA) - Las Vegas Harry Reid (LAS)
  • Seattle-Tacoma (SEA) - San Francisco (SFO)
All United Airlines flights
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