KLM flight KL 6423: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 08:00 John F. Kennedy, New York (JFK) 4 12:03 Luis Munoz Marin, San Juan (SJU) B
KL 6423 Non-stop Airbus A321neo (32Q) 4:03 Effective 2024-03-10 through 2024-03-30
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Daily 09:20 Vancouver (YVR) M 10:39 Seattle-Tacoma (SEA)
KL 6423 Non-stop Embraer EMB 175 (E7W) 1:19 Effective 2024-04-09 through 2024-06-06
Codeshare flight, operated by Delta Air Lines.(DL 3752)
Daily 09:20 Vancouver (YVR) M 10:53 Seattle-Tacoma (SEA)
KL 6423 Non-stop Embraer EMB 175 (E7W) 1:33 Effective 2024-06-07 through 2024-09-08
Codeshare flight, operated by Delta Air Lines.(DL 3752)
Daily 09:20 Vancouver (YVR) M 10:36 Seattle-Tacoma (SEA)
KL 6423 Non-stop Embraer EMB 175 (E7W) 1:16 Effective 2024-09-09 through 2024-10-26
Codeshare flight, operated by Delta Air Lines.(DL 3752)
Daily 11:45 Vancouver (YVR) M 12:51 Seattle-Tacoma (SEA)
KL 6423 Non-stop Embraer EMB 175 (E7W) 1:06 Effective 2024-03-31 through 2024-04-08
Codeshare flight, operated by Delta Air Lines.(DL 3863)
Daily 13:24 Luis Munoz Marin, San Juan (SJU) B 17:42 John F. Kennedy, New York (JFK) 4
KL 6423 Non-stop Airbus A321neo (32Q) 4:18 Effective 2024-03-10 through 2024-03-30
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Daily 13:54 Luis Munoz Marin, San Juan (SJU) B 17:10 John F. Kennedy, New York (JFK) 4
KL 6423 Non-stop Airbus A321neo (32Q) 4:16 Valid until 2024-01-07
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Daily 14:10 Luis Munoz Marin, San Juan (SJU) B 17:24 John F. Kennedy, New York (JFK) 4
KL 6423 Non-stop Airbus A321neo (32Q) 4:14 Effective 2024-01-08 through 2024-02-08
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Mon,Fri 14:10 Luis Munoz Marin, San Juan (SJU) B 17:24 John F. Kennedy, New York (JFK) 4
KL 6423 Non-stop Boeing 737-900 (739) 4:14 Effective 2024-02-09 through 2024-02-12
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Tue-Sun 14:10 Luis Munoz Marin, San Juan (SJU) B 17:24 John F. Kennedy, New York (JFK) 4
KL 6423 Non-stop Airbus A321neo (32Q) 4:14 Effective 2024-02-10 through 2024-02-18
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Daily 14:10 Luis Munoz Marin, San Juan (SJU) B 17:24 John F. Kennedy, New York (JFK) 4
KL 6423 Non-stop Airbus A321neo (32Q) 4:14 Effective 2024-02-19 through 2024-03-09
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Daily 18:39 Atlanta (ATL) S 20:59 San Francisco (SFO) 2
KL 6423 Non-stop Boeing 737-900 (739) 5:20 Effective from 2024-10-27
Codeshare flight, operated by Delta Air Lines.(DL 495)
Mon,Sun 22:40 San Francisco (SFO) 2 06:21 Atlanta (ATL) S
KL 6423 Non-stop Boeing 737-900 (739) 4:41 Effective from 2024-10-28
Codeshare flight, operated by Delta Air Lines.(DL 495)
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:


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KLM flight KL 6423: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
KLM KL6423
08:00
John F. Kennedy, New York (JFK) 4

12:03
Luis Munoz Marin, San Juan (SJU) B
Effective 2024-03-10 through 2024-03-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:03, non-stop
Airbus A321neo (32Q)
KLM KL6423
09:20
Vancouver (YVR) M

10:39
Seattle-Tacoma (SEA)
Effective 2024-04-09 through 2024-06-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3752)
Duration: 1:19, non-stop
Embraer EMB 175 (E7W)
KLM KL6423
09:20
Vancouver (YVR) M

10:53
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 3752)
Duration: 1:33, non-stop
Embraer EMB 175 (E7W)
KLM KL6423
09:20
Vancouver (YVR) M

10:36
Seattle-Tacoma (SEA)
Effective 2024-09-09 through 2024-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3752)
Duration: 1:16, non-stop
Embraer EMB 175 (E7W)
KLM KL6423
11:45
Vancouver (YVR) M

12:51
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 3863)
Duration: 1:06, non-stop
Embraer EMB 175 (E7W)
KLM KL6423
13:24
Luis Munoz Marin, San Juan (SJU) B

17:42
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 1877)
Duration: 4:18, non-stop
Airbus A321neo (32Q)
KLM KL6423
13:54
Luis Munoz Marin, San Juan (SJU) B

17:10
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 1877)
Duration: 4:16, non-stop
Airbus A321neo (32Q)
KLM KL6423
14:10
Luis Munoz Marin, San Juan (SJU) B

17:24
John F. Kennedy, New York (JFK) 4
Effective 2024-01-08 through 2024-02-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:14, non-stop
Airbus A321neo (32Q)
KLM KL6423
14:10
Luis Munoz Marin, San Juan (SJU) B

17:24
John F. Kennedy, New York (JFK) 4
Effective 2024-02-09 through 2024-02-12
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:14, non-stop
Boeing 737-900 (739)
KLM KL6423
14:10
Luis Munoz Marin, San Juan (SJU) B

17:24
John F. Kennedy, New York (JFK) 4
Effective 2024-02-10 through 2024-02-18
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:14, non-stop
Airbus A321neo (32Q)
KLM KL6423
14:10
Luis Munoz Marin, San Juan (SJU) B

17:24
John F. Kennedy, New York (JFK) 4
Effective 2024-02-19 through 2024-03-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:14, non-stop
Airbus A321neo (32Q)
KLM KL6423
18:39
Atlanta (ATL) S

20:59
San Francisco (SFO) 2
Effective from 2024-10-27
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 495)
Duration: 5:20, non-stop
Boeing 737-900 (739)
KLM KL6423
22:40
San Francisco (SFO) 2

06:21(+1)
Atlanta (ATL) S
Effective from 2024-10-28
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 495)
Duration: 4:41, non-stop
Boeing 737-900 (739)
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:
  • John F. Kennedy, New York (JFK) - Luis Munoz Marin, San Juan (SJU)
  • San Francisco (SFO) - Atlanta (ATL)
  • Vancouver (YVR) - Seattle-Tacoma (SEA)
All KLM flights
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