JAL flight JL 6388: Seattle-Tacoma - Ontario, Los Angeles

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 12:40 Seattle-Tacoma (SEA) 15:12 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:32 Effective 2025-10-04 through 2026-02-11
Codeshare flight, operated by Alaska Airlines.(AS 1118)
Tue-Sat 12:59 Seattle-Tacoma (SEA) 15:32 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737-800 (73H) 2:33 Valid until 2025-05-06
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Mon,Sun 12:59 Seattle-Tacoma (SEA) 15:32 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:33 Effective 2025-05-04 through 2025-05-05
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Wed 12:59 Seattle-Tacoma (SEA) 15:32 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 MAX 9 (7M9) 2:33 Operates only on 2025-05-07
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Daily 12:59 Seattle-Tacoma (SEA) 15:32 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737-800 (73H) 2:33 Effective 2025-05-08 through 2025-05-14
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Mon,Thu,Sun 13:18 Seattle-Tacoma (SEA) 15:50 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:32 Effective 2025-05-15 through 2025-05-22
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Tue,Wed,Fri,Sat 13:18 Seattle-Tacoma (SEA) 15:50 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 MAX 9 (7M9) 2:32 Effective 2025-05-16 through 2025-05-24
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Tue-Sun 13:18 Seattle-Tacoma (SEA) 15:50 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 MAX 9 (7M9) 2:32 Effective 2025-05-25 through 2025-05-31
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Mon,Sun 13:18 Seattle-Tacoma (SEA) 15:50 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:32 Effective 2025-05-26 through 2025-06-02
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Mon-Wed,Fri,Sat 13:18 Seattle-Tacoma (SEA) 15:50 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 MAX 9 (7M9) 2:32 Effective 2025-06-03 through 2025-06-10
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Wed,Thu,Sun 13:18 Seattle-Tacoma (SEA) 15:50 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:32 Effective 2025-06-05 through 2025-06-11
Codeshare flight, operated by Alaska Airlines.(AS 1097)
Sat 15:20 Seattle-Tacoma (SEA) 17:57 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 MAX 8 (7M8) 2:37 Effective 2025-06-14 through 2025-08-16
Codeshare flight, operated by Alaska Airlines.(AS 1086)
Mon-Fri,Sun 15:25 Seattle-Tacoma (SEA) 18:04 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:39 Effective 2025-06-12 through 2025-06-27
Codeshare flight, operated by Alaska Airlines.(AS 1086)
Sun 15:25 Seattle-Tacoma (SEA) 18:04 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 MAX 9 (7M9) 2:39 Operates only on 2025-06-29
Codeshare flight, operated by Alaska Airlines.(AS 1086)
Mon-Thu,Sun 15:25 Seattle-Tacoma (SEA) 18:04 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:39 Effective 2025-06-30 through 2025-07-10
Codeshare flight, operated by Alaska Airlines.(AS 1086)
Mon-Fri,Sun 15:25 Seattle-Tacoma (SEA) 18:04 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:39 Effective 2025-07-11 through 2025-07-18
Codeshare flight, operated by Alaska Airlines.(AS 1086)
Sun 15:25 Seattle-Tacoma (SEA) 18:04 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 MAX 9 (7M9) 2:39 Operates only on 2025-07-20
Codeshare flight, operated by Alaska Airlines.(AS 1086)
Mon-Fri,Sun 15:25 Seattle-Tacoma (SEA) 18:04 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:39 Effective 2025-07-21 through 2025-08-19
Codeshare flight, operated by Alaska Airlines.(AS 1086)
Tue-Sun 15:42 Seattle-Tacoma (SEA) 18:23 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:41 Effective 2025-08-20 through 2025-10-03
Codeshare flight, operated by Alaska Airlines.(AS 1086)
Mon 15:42 Seattle-Tacoma (SEA) 18:23 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 MAX 8 (7M8) 2:41 Effective 2025-08-25 through 2025-09-29
Codeshare flight, operated by Alaska Airlines.(AS 1086)
Daily 15:45 Seattle-Tacoma (SEA) 18:17 Ontario, Los Angeles (ONT) 2
JL 6388 Non-stop Boeing 737 (73J) 2:32 Effective from 2026-02-12
Codeshare flight, operated by Alaska Airlines.(AS 592)
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JAL flight JL 6388:
Seattle-Tacoma - Ontario, Los Angeles
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
JAL JL6388
12:40
Seattle-Tacoma (SEA)

15:12
Ontario, Los Angeles (ONT) 2
Effective 2025-10-04 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1118)
Duration: 2:32, non-stop
Boeing 737 (73J)
JAL JL6388
12:59
Seattle-Tacoma (SEA)

15:32
Ontario, Los Angeles (ONT) 2
Valid until 2025-05-06
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:33, non-stop
Boeing 737-800 (73H)
JAL JL6388
12:59
Seattle-Tacoma (SEA)

15:32
Ontario, Los Angeles (ONT) 2
Effective 2025-05-04 through 2025-05-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:33, non-stop
Boeing 737 (73J)
JAL JL6388
12:59
Seattle-Tacoma (SEA)

15:32
Ontario, Los Angeles (ONT) 2
Operates only on 2025-05-07
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:33, non-stop
Boeing 737 MAX 9 (7M9)
JAL JL6388
12:59
Seattle-Tacoma (SEA)

15:32
Ontario, Los Angeles (ONT) 2
Effective 2025-05-08 through 2025-05-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:33, non-stop
Boeing 737-800 (73H)
JAL JL6388
13:18
Seattle-Tacoma (SEA)

15:50
Ontario, Los Angeles (ONT) 2
Effective 2025-05-15 through 2025-05-22
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:32, non-stop
Boeing 737 (73J)
JAL JL6388
13:18
Seattle-Tacoma (SEA)

15:50
Ontario, Los Angeles (ONT) 2
Effective 2025-05-16 through 2025-05-24
Mon
-
Tue
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:32, non-stop
Boeing 737 MAX 9 (7M9)
JAL JL6388
13:18
Seattle-Tacoma (SEA)

15:50
Ontario, Los Angeles (ONT) 2
Effective 2025-05-25 through 2025-05-31
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:32, non-stop
Boeing 737 MAX 9 (7M9)
JAL JL6388
13:18
Seattle-Tacoma (SEA)

15:50
Ontario, Los Angeles (ONT) 2
Effective 2025-05-26 through 2025-06-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:32, non-stop
Boeing 737 (73J)
JAL JL6388
13:18
Seattle-Tacoma (SEA)

15:50
Ontario, Los Angeles (ONT) 2
Effective 2025-06-03 through 2025-06-10
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:32, non-stop
Boeing 737 MAX 9 (7M9)
JAL JL6388
13:18
Seattle-Tacoma (SEA)

15:50
Ontario, Los Angeles (ONT) 2
Effective 2025-06-05 through 2025-06-11
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1097)
Duration: 2:32, non-stop
Boeing 737 (73J)
JAL JL6388
15:20
Seattle-Tacoma (SEA)

17:57
Ontario, Los Angeles (ONT) 2
Effective 2025-06-14 through 2025-08-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 1086)
Duration: 2:37, non-stop
Boeing 737 MAX 8 (7M8)
JAL JL6388
15:25
Seattle-Tacoma (SEA)

18:04
Ontario, Los Angeles (ONT) 2
Effective 2025-06-12 through 2025-06-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1086)
Duration: 2:39, non-stop
Boeing 737 (73J)
JAL JL6388
15:25
Seattle-Tacoma (SEA)

18:04
Ontario, Los Angeles (ONT) 2
Operates only on 2025-06-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1086)
Duration: 2:39, non-stop
Boeing 737 MAX 9 (7M9)
JAL JL6388
15:25
Seattle-Tacoma (SEA)

18:04
Ontario, Los Angeles (ONT) 2
Effective 2025-06-30 through 2025-07-10
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1086)
Duration: 2:39, non-stop
Boeing 737 (73J)
JAL JL6388
15:25
Seattle-Tacoma (SEA)

18:04
Ontario, Los Angeles (ONT) 2
Effective 2025-07-11 through 2025-07-18
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1086)
Duration: 2:39, non-stop
Boeing 737 (73J)
JAL JL6388
15:25
Seattle-Tacoma (SEA)

18:04
Ontario, Los Angeles (ONT) 2
Operates only on 2025-07-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1086)
Duration: 2:39, non-stop
Boeing 737 MAX 9 (7M9)
JAL JL6388
15:25
Seattle-Tacoma (SEA)

18:04
Ontario, Los Angeles (ONT) 2
Effective 2025-07-21 through 2025-08-19
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1086)
Duration: 2:39, non-stop
Boeing 737 (73J)
JAL JL6388
15:42
Seattle-Tacoma (SEA)

18:23
Ontario, Los Angeles (ONT) 2
Effective 2025-08-20 through 2025-10-03
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 1086)
Duration: 2:41, non-stop
Boeing 737 (73J)
JAL JL6388
15:42
Seattle-Tacoma (SEA)

18:23
Ontario, Los Angeles (ONT) 2
Effective 2025-08-25 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 1086)
Duration: 2:41, non-stop
Boeing 737 MAX 8 (7M8)
JAL JL6388
15:45
Seattle-Tacoma (SEA)

18:17
Ontario, Los Angeles (ONT) 2
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 592)
Duration: 2:32, non-stop
Boeing 737 (73J)
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Parallax here SEA-ONT
  • JL 6388 is a domestic flight departing from the Seattle-Tacoma airport (SEA) and arriving at Ontario, Los Angeles airport (ONT).
  • The flight distance is 956 miles, or 1539 km.
  • The timezone of both the departure and the arrival airports is UTC-8 . Current time at both airports is (loading...).
  • For direct flights, the flight time varies between 2:32 and 2:41.
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