KLM flight KL 6421: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 09:15 Vancouver (YVR) M 10:32 Seattle-Tacoma (SEA)
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:17 Effective 2024-10-07 through 2024-10-26
Codeshare flight, operated by Delta Air Lines.(DL 3630)
Daily 09:26 Vancouver (YVR) M 10:45 Seattle-Tacoma (SEA)
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:19 Valid until 2024-09-08
Codeshare flight, operated by Delta Air Lines.(DL 3630)
Mon-Fri,Sun 11:25 Vancouver (YVR) M 12:42 Seattle-Tacoma (SEA)
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:17 Effective 2024-09-09 through 2024-10-06
Codeshare flight, operated by Delta Air Lines.(DL 4020)
Sat 11:25 Vancouver (YVR) M 12:40 Seattle-Tacoma (SEA)
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:15 Effective 2024-09-14 through 2024-10-05
Codeshare flight, operated by Delta Air Lines.(DL 4020)
Daily 19:55 Detroit (DTW) M 20:33 Saint Louis (STL) 1
KL 6421 Non-stop Boeing 717 (717) 1:38 Effective 2025-04-14 through 2025-06-07
Codeshare flight, operated by Delta Air Lines.(DL 1541)
Daily 19:55 Detroit (DTW) M 20:30 Saint Louis (STL) 1
KL 6421 Non-stop Boeing 717 (717) 1:35 Effective from 2025-06-08
Codeshare flight, operated by Delta Air Lines.(DL 1541)
Daily 20:20 Detroit (DTW) M 21:09 Saint Louis (STL) 1
KL 6421 Non-stop Boeing 737-900 (739) 1:49 Effective 2025-03-30 through 2025-04-13
Codeshare flight, operated by Delta Air Lines.(DL 1541)
Thu,Fri,Sun 21:20 Santa Ana (SNA) 04:19 Atlanta (ATL) S
KL 6421 Non-stop Boeing 757-200 (75W) 3:59 Effective 2025-01-09 through 2025-02-14
Codeshare flight, operated by Delta Air Lines.(DL 826)
The flight arrives 1 day after departure.
Daily 21:20 Santa Ana (SNA) 04:19 Atlanta (ATL) S
KL 6421 Non-stop Boeing 757-200 (75W) 3:59 Effective 2025-02-15 through 2025-03-07
Codeshare flight, operated by Delta Air Lines.(DL 826)
The flight arrives 1 day after departure.
Sat 21:20 Santa Ana (SNA) 05:19 Atlanta (ATL) S
KL 6421 Non-stop Boeing 757-200 (75W) 3:59 Operates only on 2025-03-08
Codeshare flight, operated by Delta Air Lines.(DL 826)
The flight arrives 1 day after departure.
Thu,Fri,Sun 21:30 Santa Ana (SNA) 04:36 Atlanta (ATL) S
KL 6421 Non-stop Boeing 757-200 (75W) 4:06 Effective 2024-11-14 through 2024-11-24
Codeshare flight, operated by Delta Air Lines.(DL 826)
The flight arrives 1 day after departure.
Thu-Sun 21:30 Santa Ana (SNA) 04:36 Atlanta (ATL) S
KL 6421 Non-stop Boeing 757-200 (75W) 4:06 Effective 2024-11-30 through 2024-12-06
Codeshare flight, operated by Delta Air Lines.(DL 826)
The flight arrives 1 day after departure.
Thu,Fri,Sun 21:30 Santa Ana (SNA) 04:36 Atlanta (ATL) S
KL 6421 Non-stop Boeing 757-200 (75W) 4:06 Effective 2024-12-08 through 2024-12-15
Codeshare flight, operated by Delta Air Lines.(DL 826)
The flight arrives 1 day after departure.
Thu-Sun 21:30 Santa Ana (SNA) 04:39 Atlanta (ATL) S
KL 6421 Non-stop Boeing 757-200 (75W) 4:09 Effective 2024-12-19 through 2025-01-05
Codeshare flight, operated by Delta Air Lines.(DL 826)
The flight arrives 1 day after departure.
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
09:15
Vancouver (YVR) M

10:32
Seattle-Tacoma (SEA)
Effective 2024-10-07 through 2024-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3630)
Duration: 1:17, non-stop
Embraer EMB 175 (E7W)
KLM KL6421
09:26
Vancouver (YVR) M

10:45
Seattle-Tacoma (SEA)
Valid until 2024-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3630)
Duration: 1:19, non-stop
Embraer EMB 175 (E7W)
KLM KL6421
11:25
Vancouver (YVR) M

12:42
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: 1:17, non-stop
Embraer EMB 175 (E7W)
KLM KL6421
11:25
Vancouver (YVR) M

12:40
Seattle-Tacoma (SEA)
Effective 2024-09-14 through 2024-10-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4020)
Duration: 1:15, non-stop
Embraer EMB 175 (E7W)
KLM KL6421
19:55
Detroit (DTW) M

20:33
Saint Louis (STL) 1
Effective 2025-04-14 through 2025-06-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1541)
Duration: 1:38, non-stop
Boeing 717 (717)
KLM KL6421
19:55
Detroit (DTW) M

20:30
Saint Louis (STL) 1
Effective from 2025-06-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1541)
Duration: 1:35, non-stop
Boeing 717 (717)
KLM KL6421
20:20
Detroit (DTW) M

21:09
Saint Louis (STL) 1
Effective 2025-03-30 through 2025-04-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1541)
Duration: 1:49, non-stop
Boeing 737-900 (739)
KLM KL6421
21:20
Santa Ana (SNA)

04:19(+1)
Atlanta (ATL) S
Effective 2025-01-09 through 2025-02-14
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 826)
Duration: 3:59, non-stop
Boeing 757-200 (75W)
The flight arrives 1 day after departure.
KLM KL6421
21:20
Santa Ana (SNA)

04:19(+1)
Atlanta (ATL) S
Effective 2025-02-15 through 2025-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 826)
Duration: 3:59, non-stop
Boeing 757-200 (75W)
The flight arrives 1 day after departure.
KLM KL6421
21:20
Santa Ana (SNA)

05:19(+1)
Atlanta (ATL) S
Operates only on 2025-03-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 826)
Duration: 3:59, non-stop
Boeing 757-200 (75W)
The flight arrives 1 day after departure.
KLM KL6421
21:30
Santa Ana (SNA)

04:36(+1)
Atlanta (ATL) S
Effective 2024-11-14 through 2024-11-24
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 826)
Duration: 4:06, non-stop
Boeing 757-200 (75W)
The flight arrives 1 day after departure.
KLM KL6421
21:30
Santa Ana (SNA)

04:36(+1)
Atlanta (ATL) S
Effective 2024-11-30 through 2024-12-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 826)
Duration: 4:06, non-stop
Boeing 757-200 (75W)
The flight arrives 1 day after departure.
KLM KL6421
21:30
Santa Ana (SNA)

04:36(+1)
Atlanta (ATL) S
Effective 2024-12-08 through 2024-12-15
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 826)
Duration: 4:06, non-stop
Boeing 757-200 (75W)
The flight arrives 1 day after departure.
KLM KL6421
21:30
Santa Ana (SNA)

04:39(+1)
Atlanta (ATL) S
Effective 2024-12-19 through 2025-01-05
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 826)
Duration: 4:09, non-stop
Boeing 757-200 (75W)
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:
  • Detroit (DTW) - Saint Louis (STL)
  • Santa Ana (SNA) - Atlanta (ATL)
  • Vancouver (YVR) - Seattle-Tacoma (SEA)
All KLM flights
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