KLM flight KL 6321: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon-Sat 08:00 New York John F. Kennedy (JFK) 4 10:44 Jacksonville (JAX)
KL 6321 Non-stop Canadair CRJ 900 (CR9) 2:44 Effective from 2026-10-26
Codeshare flight, operated by Delta Air Lines.(DL 5483)
Sat 09:50 Sioux Falls (FSD) 11:00 Minneapolis/Saint Paul (MSP) 1
KL 6321 Non-stop Canadair CRJ 900 (CR9) 1:10 Operates only on 2026-03-28
Codeshare flight, operated by Delta Air Lines.(DL 4048)
Mon-Fri,Sun 10:50 Sioux Falls (FSD) 11:55 Minneapolis/Saint Paul (MSP) 1
KL 6321 Non-stop Canadair CRJ 900 (CR9) 1:05 Effective 2026-03-08 through 2026-03-27
Codeshare flight, operated by Delta Air Lines.(DL 4035)
Mon,Tue,Thu,Sat,Sun 11:10 Sacramento (SMF) A 13:19 Seattle-Tacoma (SEA)
KL 6321 Non-stop Embraer EMB 175 (E7W) 2:09 Effective 2026-04-13 through 2026-10-05
Codeshare flight, operated by Delta Air Lines.(DL 4439)
Mon,Tue,Thu,Sat,Sun 11:10 Sacramento (SMF) A 13:28 Seattle-Tacoma (SEA)
KL 6321 Non-stop Embraer EMB 175 (E7W) 2:18 Effective 2026-10-06 through 2026-10-24
Codeshare flight, operated by Delta Air Lines.(DL 4439)
Daily 11:15 Jacksonville (JAX) 13:35 New York John F. Kennedy (JFK) 4
KL 6321 Non-stop Canadair CRJ 900 (CR9) 2:20 Effective from 2026-10-25
Codeshare flight, operated by Delta Air Lines.(DL 5483)
Mon,Tue,Thu,Sat,Sun 11:37 Sacramento (SMF) A 13:45 Seattle-Tacoma (SEA)
KL 6321 Non-stop Embraer EMB 175 (E7W) 2:08 Effective 2026-03-29 through 2026-04-12
Codeshare flight, operated by Delta Air Lines.(DL 4439)
Wed,Fri 13:00 Sacramento (SMF) A 15:09 Seattle-Tacoma (SEA)
KL 6321 Non-stop Embraer EMB 175 (E7W) 2:09 Effective 2026-04-15 through 2026-10-02
Codeshare flight, operated by Delta Air Lines.(DL 4125)
Wed,Fri 13:00 Sacramento (SMF) A 15:10 Seattle-Tacoma (SEA)
KL 6321 Non-stop Embraer EMB 175 (E7W) 2:10 Effective 2026-10-07 through 2026-10-23
Codeshare flight, operated by Delta Air Lines.(DL 4125)
Wed,Fri 13:16 Sacramento (SMF) A 15:24 Seattle-Tacoma (SEA)
KL 6321 Non-stop Embraer EMB 175 (E7W) 2:08 Effective 2026-04-01 through 2026-04-10
Codeshare flight, operated by Delta Air Lines.(DL 4125)
Fri,Sun 14:27 Minneapolis/Saint Paul (MSP) 1 15:45 Sioux Falls (FSD)
KL 6321 Non-stop Canadair CRJ 900 (CR9) 1:18 Valid until 2026-01-04
Codeshare flight, operated by Delta Air Lines.(DL 4864)
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This flight number is listed as serving the following routes:


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KLM flight KL 6321: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
KLM KL6321
08:00
New York John F. Kennedy (JFK) 4

10:44
Jacksonville (JAX)
Effective from 2026-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5483)
Duration: 2:44, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
KLM KL6321
09:50
Sioux Falls (FSD)

11:00
Minneapolis/Saint Paul (MSP) 1
Operates only on 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4048)
Duration: 1:10, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
KLM KL6321
10:50
Sioux Falls (FSD)

11:55
Minneapolis/Saint Paul (MSP) 1
Effective 2026-03-08 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4035)
Duration: 1:05, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
KLM KL6321
11:10
Sacramento (SMF) A

13:19
Seattle-Tacoma (SEA)
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4439)
Duration: 2:09, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6321
11:10
Sacramento (SMF) A

13:28
Seattle-Tacoma (SEA)
Effective 2026-10-06 through 2026-10-24
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4439)
Duration: 2:18, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6321
11:15
Jacksonville (JAX)

13:35
New York John F. Kennedy (JFK) 4
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5483)
Duration: 2:20, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
KLM KL6321
11:37
Sacramento (SMF) A

13:45
Seattle-Tacoma (SEA)
Effective 2026-03-29 through 2026-04-12
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4439)
Duration: 2:08, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6321
13:00
Sacramento (SMF) A

15:09
Seattle-Tacoma (SEA)
Effective 2026-04-15 through 2026-10-02
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4125)
Duration: 2:09, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6321
13:00
Sacramento (SMF) A

15:10
Seattle-Tacoma (SEA)
Effective 2026-10-07 through 2026-10-23
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4125)
Duration: 2:10, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6321
13:16
Sacramento (SMF) A

15:24
Seattle-Tacoma (SEA)
Effective 2026-04-01 through 2026-04-10
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4125)
Duration: 2:08, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
KLM KL6321
14:27
Minneapolis/Saint Paul (MSP) 1

15:45
Sioux Falls (FSD)
Valid until 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4864)
Duration: 1:18, non-stop
Canadair CRJ 900 (CR9)
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This flight number is listed as serving the following routes:
  • Jacksonville (JAX) - New York John F. Kennedy (JFK)
  • Minneapolis/Saint Paul (MSP) - Sioux Falls (FSD)
  • Sacramento (SMF) - Seattle-Tacoma (SEA)
All KLM flights
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- CACHE: False - LANG: en - IS_EU: False