KLM flight KL 6421: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 06:00 Luis Munoz Marin, San Juan (SJU) B 10:15 John F. Kennedy, New York (JFK) 4
KL 6421 Non-stop Boeing 737-900 (739) 4:15 Effective 2024-03-10 through 2024-03-30
Codeshare flight, operated by Delta Air Lines.(DL 1854)
Daily 06:45 Vancouver (YVR) M 07:51 Seattle-Tacoma (SEA)
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:06 Effective 2024-05-07 through 2024-06-06
Codeshare flight, operated by Delta Air Lines.(DL 3943)
Daily 06:45 Vancouver (YVR) M 08:01 Seattle-Tacoma (SEA)
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:16 Effective 2024-06-07 through 2024-09-08
Codeshare flight, operated by Delta Air Lines.(DL 3943)
Daily 07:00 Luis Munoz Marin, San Juan (SJU) B 10:08 John F. Kennedy, New York (JFK) 4
KL 6421 Non-stop Boeing 737-900 (739) 4:08 Valid until 2024-01-07
Codeshare flight, operated by Delta Air Lines.(DL 1854)
Daily 07:00 Luis Munoz Marin, San Juan (SJU) B 10:11 John F. Kennedy, New York (JFK) 4
KL 6421 Non-stop Boeing 737-900 (739) 4:11 Effective 2024-02-06 through 2024-03-09
Codeshare flight, operated by Delta Air Lines.(DL 1854)
Daily 07:21 Luis Munoz Marin, San Juan (SJU) B 10:30 John F. Kennedy, New York (JFK) 4
KL 6421 Non-stop Boeing 737-900 (739) 4:09 Effective 2024-01-08 through 2024-02-05
Codeshare flight, operated by Delta Air Lines.(DL 1854)
Daily 09:15 Vancouver (YVR) M 10:29 Seattle-Tacoma (SEA)
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:14 Effective 2024-03-31 through 2024-04-08
Codeshare flight, operated by Delta Air Lines.(DL 3848)
Daily 11:50 Vancouver (YVR) M 12:58 Seattle-Tacoma (SEA)
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:08 Effective 2024-04-09 through 2024-05-06
Codeshare flight, operated by Delta Air Lines.(DL 3724)
Daily 11:50 Vancouver (YVR) M 12:58 Seattle-Tacoma (SEA)
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:08 Effective 2024-09-09 through 2024-10-06
Codeshare flight, operated by Delta Air Lines.(DL 4020)
This flight number is listed as serving the following routes:


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KLM flight KL 6421: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
KLM KL6421
06:00
Luis Munoz Marin, San Juan (SJU) B

10:15
John F. Kennedy, New York (JFK) 4
Effective 2024-03-10 through 2024-03-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1854)
Duration: 4:15, non-stop
Boeing 737-900 (739)
KLM KL6421
06:45
Vancouver (YVR) M

07:51
Seattle-Tacoma (SEA)
Effective 2024-05-07 through 2024-06-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3943)
Duration: 1:06, non-stop
Embraer EMB 175 (E7W)
KLM KL6421
06:45
Vancouver (YVR) M

08:01
Seattle-Tacoma (SEA)
Effective 2024-06-07 through 2024-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3943)
Duration: 1:16, non-stop
Embraer EMB 175 (E7W)
KLM KL6421
07:00
Luis Munoz Marin, San Juan (SJU) B

10:08
John F. Kennedy, New York (JFK) 4
Valid until 2024-01-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1854)
Duration: 4:08, non-stop
Boeing 737-900 (739)
KLM KL6421
07:00
Luis Munoz Marin, San Juan (SJU) B

10:11
John F. Kennedy, New York (JFK) 4
Effective 2024-02-06 through 2024-03-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1854)
Duration: 4:11, non-stop
Boeing 737-900 (739)
KLM KL6421
07:21
Luis Munoz Marin, San Juan (SJU) B

10:30
John F. Kennedy, New York (JFK) 4
Effective 2024-01-08 through 2024-02-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1854)
Duration: 4:09, non-stop
Boeing 737-900 (739)
KLM KL6421
09:15
Vancouver (YVR) M

10:29
Seattle-Tacoma (SEA)
Effective 2024-03-31 through 2024-04-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3848)
Duration: 1:14, non-stop
Embraer EMB 175 (E7W)
KLM KL6421
11:50
Vancouver (YVR) M

12:58
Seattle-Tacoma (SEA)
Effective 2024-04-09 through 2024-05-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3724)
Duration: 1:08, non-stop
Embraer EMB 175 (E7W)
KLM KL6421
11:50
Vancouver (YVR) M

12:58
Seattle-Tacoma (SEA)
Effective 2024-09-09 through 2024-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4020)
Duration: 1:08, non-stop
Embraer EMB 175 (E7W)
This flight number is listed as serving the following routes:
  • Luis Munoz Marin, San Juan (SJU) - John F. Kennedy, New York (JFK)
  • Vancouver (YVR) - Seattle-Tacoma (SEA)
All KLM flights
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