KLM flight KL 6421: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 07:05 Albuquerque (ABQ) 12:02 Atlanta (ATL) S
KL 6421 Non-stop Boeing 737-900 (739) 2:57 Effective 2026-03-29 through 2026-04-12
Codeshare flight, operated by Delta Air Lines.(DL 1688)
Daily 07:05 Albuquerque (ABQ) 12:11 Atlanta (ATL) S
KL 6421 Non-stop Boeing 737-900 (739) 3:06 Effective 2026-04-13 through 2026-10-05
Codeshare flight, operated by Delta Air Lines.(DL 1688)
Daily 07:05 Albuquerque (ABQ) 12:10 Atlanta (ATL) S
KL 6421 Non-stop Boeing 737-900 (739) 3:05 Effective 2026-10-06 through 2026-10-24
Codeshare flight, operated by Delta Air Lines.(DL 1688)
Mon-Fri,Sun 09:10 Sacramento (SMF) A 10:45 Los Angeles (LAX) 3
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-02-12 through 2026-03-06
Codeshare flight, operated by Delta Air Lines.(DL 4475)
Sat 09:30 Sacramento (SMF) A 11:03 Los Angeles (LAX) 3
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:33 Operates only on 2026-02-14
Codeshare flight, operated by Delta Air Lines.(DL 4475)
Sat 09:30 Sacramento (SMF) A 11:03 Los Angeles (LAX) 3
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:33 Effective 2026-02-28 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 4475)
Daily 09:35 Sacramento (SMF) A 11:10 Los Angeles (LAX) 3
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-01-19 through 2026-01-31
Codeshare flight, operated by Delta Air Lines.(DL 3822)
Daily 09:40 Sacramento (SMF) A 11:15 Los Angeles (LAX) 3
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-02-01 through 2026-02-11
Codeshare flight, operated by Delta Air Lines.(DL 3822)
Daily 09:46 Sacramento (SMF) A 11:22 Los Angeles (LAX) 3
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:36 Valid until 2026-01-04
Codeshare flight, operated by Delta Air Lines.(DL 3755)
Daily 10:45 Sacramento (SMF) A 12:22 Los Angeles (LAX) 3
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:37 Effective 2026-01-05 through 2026-01-18
Codeshare flight, operated by Delta Air Lines.(DL 3690)
Daily 11:17 Sacramento (SMF) A 12:54 Los Angeles (LAX) 3
KL 6421 Non-stop Embraer EMB 175 (E7W) 1:37 Effective 2026-03-08 through 2026-03-28
Codeshare flight, operated by Delta Air Lines.(DL 3966)
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
07:05
Albuquerque (ABQ)

12:02
Atlanta (ATL) S
Effective 2026-03-29 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1688)
Duration: 2:57, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6421
07:05
Albuquerque (ABQ)

12:11
Atlanta (ATL) S
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1688)
Duration: 3:06, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6421
07:05
Albuquerque (ABQ)

12:10
Atlanta (ATL) S
Effective 2026-10-06 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1688)
Duration: 3:05, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6421
09:10
Sacramento (SMF) A

10:45
Los Angeles (LAX) 3
Effective 2026-02-12 through 2026-03-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4475)
Duration: 1:35, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6421
09:30
Sacramento (SMF) A

11:03
Los Angeles (LAX) 3
Operates only on 2026-02-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4475)
Duration: 1:33, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6421
09:30
Sacramento (SMF) A

11:03
Los Angeles (LAX) 3
Effective 2026-02-28 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4475)
Duration: 1:33, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6421
09:35
Sacramento (SMF) A

11:10
Los Angeles (LAX) 3
Effective 2026-01-19 through 2026-01-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3822)
Duration: 1:35, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6421
09:40
Sacramento (SMF) A

11:15
Los Angeles (LAX) 3
Effective 2026-02-01 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3822)
Duration: 1:35, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6421
09:46
Sacramento (SMF) A

11:22
Los Angeles (LAX) 3
Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3755)
Duration: 1:36, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6421
10:45
Sacramento (SMF) A

12:22
Los Angeles (LAX) 3
Effective 2026-01-05 through 2026-01-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3690)
Duration: 1:37, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6421
11:17
Sacramento (SMF) A

12:54
Los Angeles (LAX) 3
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3966)
Duration: 1:37, non-stop
Embraer EMB 175 (E7W)
This flight number is listed as serving the following routes:
  • Albuquerque (ABQ) - Atlanta (ATL)
  • Sacramento (SMF) - Los Angeles (LAX)
All KLM flights
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