United Airlines flight UA 684: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 14:20 Dulles, Washington (IAD) 16:54 Los Angeles (LAX) 7
UA 684 Non-stop Boeing 737-900 (739) 5:34 Effective 2026-01-06 through 2026-02-11
Thu 16:08 Las Vegas Harry Reid (LAS) 3 17:27 Los Angeles (LAX) 7
UA 684 Non-stop Boeing 737 MAX 9 (7M9) 1:19 Operates only on 2025-05-01
Daily 16:08 Las Vegas Harry Reid (LAS) 3 17:27 Los Angeles (LAX) 7
UA 684 Non-stop Boeing 737-900 (739) 1:19 Effective 2025-05-02 through 2025-05-21
Mon-Fri,Sun 17:13 Las Vegas Harry Reid (LAS) 3 18:35 Los Angeles (LAX) 7
UA 684 Non-stop Boeing 737-900 (739) 1:22 Effective 2025-05-22 through 2025-06-25
Daily 18:45 Los Angeles (LAX) 7 21:38 Seattle-Tacoma (SEA)
UA 684 Non-stop Boeing 737-900 (739) 2:53 Effective 2025-09-25 through 2025-10-25
Daily 19:00 Los Angeles (LAX) 7 21:57 Seattle-Tacoma (SEA)
UA 684 Non-stop Boeing 737-900 (739) 2:57 Valid until 2025-05-21
Daily 19:07 Los Angeles (LAX) 7 21:58 Seattle-Tacoma (SEA)
UA 684 Non-stop Airbus A320 (320) 2:51 Effective 2025-05-22 through 2025-06-25
Daily 19:15 Los Angeles (LAX) 7 22:06 Seattle-Tacoma (SEA)
UA 684 Non-stop Airbus A320 (320) 2:51 Effective 2025-06-26 through 2025-07-03
Daily 19:15 Los Angeles (LAX) 7 22:06 Seattle-Tacoma (SEA)
UA 684 Non-stop Airbus A320 (320) 2:51 Effective 2025-07-05 through 2025-08-18
Daily 19:20 Los Angeles (LAX) 7 22:18 Seattle-Tacoma (SEA)
UA 684 Non-stop Boeing 737-800 (738) 2:58 Effective from 2025-10-26
Daily 19:22 Los Angeles (LAX) 7 22:15 Seattle-Tacoma (SEA)
UA 684 Non-stop Airbus A320 (320) 2:53 Effective 2025-08-19 through 2025-09-24
Non-Direct Flights:
Daily 14:20 Dulles, Washington (IAD) 22:18 Seattle-Tacoma (SEA)
UA 684 1-stop Boeing 737-900 (739) 10:58 Effective 2026-01-06 through 2026-02-11
Thu 16:08 Las Vegas Harry Reid (LAS) 3 21:57 Seattle-Tacoma (SEA)
UA 684 1-stop Boeing 737 MAX 9 (7M9) 5:49 Operates only on 2025-05-01
Daily 16:08 Las Vegas Harry Reid (LAS) 3 21:57 Seattle-Tacoma (SEA)
UA 684 1-stop Boeing 737-900 (739) 5:49 Effective 2025-05-02 through 2025-05-21
Mon-Fri,Sun 17:13 Las Vegas Harry Reid (LAS) 3 21:58 Seattle-Tacoma (SEA)
UA 684 1-stop Boeing 737-900 (739) 4:45 Effective 2025-05-22 through 2025-06-25
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This flight number is listed as serving the following routes:


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United Airlines flight UA 684: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA684
14:20
Dulles, Washington (IAD)

16:54
Los Angeles (LAX) 7
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:34, non-stop
Boeing 737-900 (739)
United Airlines UA684
16:08
Las Vegas Harry Reid (LAS) 3

17:27
Los Angeles (LAX) 7
Operates only on 2025-05-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:19, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA684
16:08
Las Vegas Harry Reid (LAS) 3

17:27
Los Angeles (LAX) 7
Effective 2025-05-02 through 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:19, non-stop
Boeing 737-900 (739)
United Airlines UA684
17:13
Las Vegas Harry Reid (LAS) 3

18:35
Los Angeles (LAX) 7
Effective 2025-05-22 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:22, non-stop
Boeing 737-900 (739)
United Airlines UA684
18:45
Los Angeles (LAX) 7

21:38
Seattle-Tacoma (SEA)
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:53, non-stop
Boeing 737-900 (739)
United Airlines UA684
19:00
Los Angeles (LAX) 7

21:57
Seattle-Tacoma (SEA)
Valid until 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:57, non-stop
Boeing 737-900 (739)
United Airlines UA684
19:07
Los Angeles (LAX) 7

21:58
Seattle-Tacoma (SEA)
Effective 2025-05-22 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:51, non-stop
Airbus A320 (320)
United Airlines UA684
19:15
Los Angeles (LAX) 7

22:06
Seattle-Tacoma (SEA)
Effective 2025-06-26 through 2025-07-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:51, non-stop
Airbus A320 (320)
United Airlines UA684
19:15
Los Angeles (LAX) 7

22:06
Seattle-Tacoma (SEA)
Effective 2025-07-05 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:51, non-stop
Airbus A320 (320)
United Airlines UA684
19:20
Los Angeles (LAX) 7

22:18
Seattle-Tacoma (SEA)
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:58, non-stop
Boeing 737-800 (738)
United Airlines UA684
19:22
Los Angeles (LAX) 7

22:15
Seattle-Tacoma (SEA)
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:53, non-stop
Airbus A320 (320)
Non-Direct Flights:
United Airlines UA684
14:20
Dulles, Washington (IAD)

22:18
Seattle-Tacoma (SEA)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:58, 1-stop
Boeing 737-900 (739)
United Airlines UA684
16:08
Las Vegas Harry Reid (LAS) 3

21:57
Seattle-Tacoma (SEA)
Operates only on 2025-05-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 5:49, 1-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA684
16:08
Las Vegas Harry Reid (LAS) 3

21:57
Seattle-Tacoma (SEA)
Effective 2025-05-02 through 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:49, 1-stop
Boeing 737-900 (739)
United Airlines UA684
17:13
Las Vegas Harry Reid (LAS) 3

21:58
Seattle-Tacoma (SEA)
Effective 2025-05-22 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:45, 1-stop
Boeing 737-900 (739)
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Parallax here -
This flight number is listed as serving the following routes:
  • Dulles, Washington (IAD) - Los Angeles (LAX)
  • Dulles, Washington (IAD) - Seattle-Tacoma (SEA)
  • Las Vegas Harry Reid (LAS) - Los Angeles (LAX)
  • Las Vegas Harry Reid (LAS) - Seattle-Tacoma (SEA)
  • Los Angeles (LAX) - Seattle-Tacoma (SEA)
All United Airlines flights
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