KLM flight KL 6521: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Tue,Thu,Sat 07:00 Santa Ana (SNA) 10:06 Salt Lake City (SLC)
KL 6521 Non-stop Airbus A220-100 (221) 2:06 Effective 2025-03-31 through 2025-04-12
Codeshare flight, operated by Delta Air Lines.(DL 1185)
Mon,Tue,Thu,Sat 07:00 Santa Ana (SNA) 10:00 Salt Lake City (SLC)
KL 6521 Non-stop Airbus A220-100 (221) 2:00 Effective 2025-04-14 through 2025-05-06
Codeshare flight, operated by Delta Air Lines.(DL 1185)
Mon 07:00 Santa Ana (SNA) 10:00 Salt Lake City (SLC)
KL 6521 Non-stop Airbus A220-100 (221) 2:00 Effective 2025-05-12 through 2025-06-02
Codeshare flight, operated by Delta Air Lines.(DL 1185)
Mon,Tue,Thu,Sat 07:00 Santa Ana (SNA) 09:59 Salt Lake City (SLC)
KL 6521 Non-stop Airbus A220-100 (221) 1:59 Effective from 2025-06-09
Codeshare flight, operated by Delta Air Lines.(DL 1185)
Daily 11:09 Bismarck (BIS) 12:36 Minneapolis/Saint Paul (MSP) 1
KL 6521 Non-stop Embraer EMB 175 (E7W) 1:27 Effective 2024-10-07 through 2024-10-26
Codeshare flight, operated by Delta Air Lines.(DL 4066)
Mon,Wed-Fri,Sun 11:19 Bismarck (BIS) 12:49 Minneapolis/Saint Paul (MSP) 1
KL 6521 Non-stop Embraer EMB 175 (E7W) 1:30 Effective 2024-09-09 through 2024-09-16
Codeshare flight, operated by Delta Air Lines.(DL 4066)
Tue,Sat 11:19 Bismarck (BIS) 12:50 Minneapolis/Saint Paul (MSP) 1
KL 6521 Non-stop Embraer EMB 175 (E7W) 1:31 Effective 2024-09-10 through 2024-09-14
Codeshare flight, operated by Delta Air Lines.(DL 4066)
Mon-Fri,Sun 11:19 Bismarck (BIS) 12:49 Minneapolis/Saint Paul (MSP) 1
KL 6521 Non-stop Embraer EMB 175 (E7W) 1:30 Effective 2024-09-17 through 2024-10-06
Codeshare flight, operated by Delta Air Lines.(DL 4066)
Sat 11:19 Bismarck (BIS) 12:50 Minneapolis/Saint Paul (MSP) 1
KL 6521 Non-stop Embraer EMB 175 (E7W) 1:31 Effective 2024-09-21 through 2024-10-05
Codeshare flight, operated by Delta Air Lines.(DL 4066)
Sun 11:28 Bismarck (BIS) 13:00 Minneapolis/Saint Paul (MSP) 1
KL 6521 Non-stop Embraer EMB 175 (E7W) 1:32 Operates only on 2024-09-08
Codeshare flight, operated by Delta Air Lines.(DL 4066)
Wed,Fri,Sun 11:33 Raleigh/Durham (RDU) 2 13:00 Atlanta (ATL) S
KL 6521 Non-stop Boeing 757 (757) 1:27 Effective 2024-11-03 through 2024-11-10
Codeshare flight, operated by Delta Air Lines.(DL 2633)
Mon-Fri,Sun 12:20 Bismarck (BIS) 13:50 Minneapolis/Saint Paul (MSP) 1
KL 6521 Non-stop Embraer EMB 175 (E7W) 1:30 Valid until 2024-09-06
Codeshare flight, operated by Delta Air Lines.(DL 4066)
Sat 12:20 Bismarck (BIS) 13:50 Minneapolis/Saint Paul (MSP) 1
KL 6521 Non-stop Embraer EMB 175 (E7W) 1:30 Operates only on 2024-09-07
Codeshare flight, operated by Delta Air Lines.(DL 4066)
Mon,Tue,Sun 12:40 Raleigh/Durham (RDU) 2 14:12 Atlanta (ATL) S
KL 6521 Non-stop Boeing 737-900 (739) 1:32 Effective 2025-01-06 through 2025-03-04
Codeshare flight, operated by Delta Air Lines.(DL 2052)
Mon,Tue,Thu,Sat 12:40 Raleigh/Durham (RDU) 2 14:12 Atlanta (ATL) S
KL 6521 Non-stop Boeing 737-900 (739) 1:32 Effective 2025-03-10 through 2025-03-29
Codeshare flight, operated by Delta Air Lines.(DL 2052)
Mon,Tue,Sun 12:59 Raleigh/Durham (RDU) 2 14:34 Atlanta (ATL) S
KL 6521 Non-stop Airbus A321 (321) 1:35 Effective 2024-12-22 through 2025-01-05
Codeshare flight, operated by Delta Air Lines.(DL 2052)
Mon-Wed,Fri,Sun 15:25 Raleigh/Durham (RDU) 2 16:52 Atlanta (ATL) S
KL 6521 Non-stop Boeing 757 (757) 1:27 Effective 2024-10-27 through 2024-11-01
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Mon,Thu 15:25 Raleigh/Durham (RDU) 2 16:52 Atlanta (ATL) S
KL 6521 Non-stop Boeing 757 (757) 1:27 Effective 2024-11-04 through 2024-11-07
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Sat 15:45 Raleigh/Durham (RDU) 2 17:18 Atlanta (ATL) S
KL 6521 Non-stop Boeing 737-900 (739) 1:33 Operates only on 2024-11-02
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Sat 15:45 Raleigh/Durham (RDU) 2 17:14 Atlanta (ATL) S
KL 6521 Non-stop Boeing 757 (757) 1:29 Operates only on 2024-11-09
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Daily 16:20 Raleigh/Durham (RDU) 2 17:50 Atlanta (ATL) S
KL 6521 Non-stop Boeing 737-900 (739) 1:30 Effective 2024-12-03 through 2024-12-18
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Wed-Sat 16:25 Raleigh/Durham (RDU) 2 17:59 Atlanta (ATL) S
KL 6521 Non-stop Boeing 737-900 (739) 1:34 Effective 2025-01-08 through 2025-03-08
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Thu-Sat 16:48 Raleigh/Durham (RDU) 2 18:24 Atlanta (ATL) S
KL 6521 Non-stop Airbus A321 (321) 1:36 Effective 2024-12-19 through 2025-01-04
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Thu,Fri 17:00 Raleigh/Durham (RDU) 2 18:30 Atlanta (ATL) S
KL 6521 Non-stop Airbus A321 (321) 1:30 Effective 2024-11-28 through 2024-11-29
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Wed 17:00 Raleigh/Durham (RDU) 2 18:36 Atlanta (ATL) S
KL 6521 Non-stop Airbus A321 (321) 1:36 Effective 2024-12-25 through 2025-01-01
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Daily 17:09 Raleigh/Durham (RDU) 2 18:39 Atlanta (ATL) S
KL 6521 Non-stop Airbus A321 (321) 1:30 Effective 2024-11-11 through 2024-11-26
Codeshare flight, operated by Delta Air Lines.(DL 2026)
Mon,Sat,Sun 17:09 Raleigh/Durham (RDU) 2 18:39 Atlanta (ATL) S
KL 6521 Non-stop Airbus A321 (321) 1:30 Effective 2024-11-30 through 2024-12-02
Codeshare flight, operated by Delta Air Lines.(DL 2026)
This flight number is listed as serving the following routes:


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KLM flight KL 6521: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
KLM KL6521
07:00
Santa Ana (SNA)

10:06
Salt Lake City (SLC)
Effective 2025-03-31 through 2025-04-12
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1185)
Duration: 2:06, non-stop
Airbus A220-100 (221)
KLM KL6521
07:00
Santa Ana (SNA)

10:00
Salt Lake City (SLC)
Effective 2025-04-14 through 2025-05-06
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1185)
Duration: 2:00, non-stop
Airbus A220-100 (221)
KLM KL6521
07:00
Santa Ana (SNA)

10:00
Salt Lake City (SLC)
Effective 2025-05-12 through 2025-06-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1185)
Duration: 2:00, non-stop
Airbus A220-100 (221)
KLM KL6521
07:00
Santa Ana (SNA)

09:59
Salt Lake City (SLC)
Effective from 2025-06-09
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1185)
Duration: 1:59, non-stop
Airbus A220-100 (221)
KLM KL6521
11:09
Bismarck (BIS)

12:36
Minneapolis/Saint Paul (MSP) 1
Effective 2024-10-07 through 2024-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4066)
Duration: 1:27, non-stop
Embraer EMB 175 (E7W)
KLM KL6521
11:19
Bismarck (BIS)

12:49
Minneapolis/Saint Paul (MSP) 1
Effective 2024-09-09 through 2024-09-16
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4066)
Duration: 1:30, non-stop
Embraer EMB 175 (E7W)
KLM KL6521
11:19
Bismarck (BIS)

12:50
Minneapolis/Saint Paul (MSP) 1
Effective 2024-09-10 through 2024-09-14
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4066)
Duration: 1:31, non-stop
Embraer EMB 175 (E7W)
KLM KL6521
11:19
Bismarck (BIS)

12:49
Minneapolis/Saint Paul (MSP) 1
Effective 2024-09-17 through 2024-10-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4066)
Duration: 1:30, non-stop
Embraer EMB 175 (E7W)
KLM KL6521
11:19
Bismarck (BIS)

12:50
Minneapolis/Saint Paul (MSP) 1
Effective 2024-09-21 through 2024-10-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4066)
Duration: 1:31, non-stop
Embraer EMB 175 (E7W)
KLM KL6521
11:28
Bismarck (BIS)

13:00
Minneapolis/Saint Paul (MSP) 1
Operates only on 2024-09-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4066)
Duration: 1:32, non-stop
Embraer EMB 175 (E7W)
KLM KL6521
11:33
Raleigh/Durham (RDU) 2

13:00
Atlanta (ATL) S
Effective 2024-11-03 through 2024-11-10
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2633)
Duration: 1:27, non-stop
Boeing 757 (757)
KLM KL6521
12:20
Bismarck (BIS)

13:50
Minneapolis/Saint Paul (MSP) 1
Valid until 2024-09-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4066)
Duration: 1:30, non-stop
Embraer EMB 175 (E7W)
KLM KL6521
12:20
Bismarck (BIS)

13:50
Minneapolis/Saint Paul (MSP) 1
Operates only on 2024-09-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 4066)
Duration: 1:30, non-stop
Embraer EMB 175 (E7W)
KLM KL6521
12:40
Raleigh/Durham (RDU) 2

14:12
Atlanta (ATL) S
Effective 2025-01-06 through 2025-03-04
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2052)
Duration: 1:32, non-stop
Boeing 737-900 (739)
KLM KL6521
12:40
Raleigh/Durham (RDU) 2

14:12
Atlanta (ATL) S
Effective 2025-03-10 through 2025-03-29
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2052)
Duration: 1:32, non-stop
Boeing 737-900 (739)
KLM KL6521
12:59
Raleigh/Durham (RDU) 2

14:34
Atlanta (ATL) S
Effective 2024-12-22 through 2025-01-05
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2052)
Duration: 1:35, non-stop
Airbus A321 (321)
KLM KL6521
15:25
Raleigh/Durham (RDU) 2

16:52
Atlanta (ATL) S
Effective 2024-10-27 through 2024-11-01
Mon
Tue
Wed
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:27, non-stop
Boeing 757 (757)
KLM KL6521
15:25
Raleigh/Durham (RDU) 2

16:52
Atlanta (ATL) S
Effective 2024-11-04 through 2024-11-07
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:27, non-stop
Boeing 757 (757)
KLM KL6521
15:45
Raleigh/Durham (RDU) 2

17:18
Atlanta (ATL) S
Operates only on 2024-11-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:33, non-stop
Boeing 737-900 (739)
KLM KL6521
15:45
Raleigh/Durham (RDU) 2

17:14
Atlanta (ATL) S
Operates only on 2024-11-09
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:29, non-stop
Boeing 757 (757)
KLM KL6521
16:20
Raleigh/Durham (RDU) 2

17:50
Atlanta (ATL) S
Effective 2024-12-03 through 2024-12-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:30, non-stop
Boeing 737-900 (739)
KLM KL6521
16:25
Raleigh/Durham (RDU) 2

17:59
Atlanta (ATL) S
Effective 2025-01-08 through 2025-03-08
Mon
-
Tue
-
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:34, non-stop
Boeing 737-900 (739)
KLM KL6521
16:48
Raleigh/Durham (RDU) 2

18:24
Atlanta (ATL) S
Effective 2024-12-19 through 2025-01-04
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:36, non-stop
Airbus A321 (321)
KLM KL6521
17:00
Raleigh/Durham (RDU) 2

18:30
Atlanta (ATL) S
Effective 2024-11-28 through 2024-11-29
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:30, non-stop
Airbus A321 (321)
KLM KL6521
17:00
Raleigh/Durham (RDU) 2

18:36
Atlanta (ATL) S
Effective 2024-12-25 through 2025-01-01
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:36, non-stop
Airbus A321 (321)
KLM KL6521
17:09
Raleigh/Durham (RDU) 2

18:39
Atlanta (ATL) S
Effective 2024-11-11 through 2024-11-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:30, non-stop
Airbus A321 (321)
KLM KL6521
17:09
Raleigh/Durham (RDU) 2

18:39
Atlanta (ATL) S
Effective 2024-11-30 through 2024-12-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2026)
Duration: 1:30, non-stop
Airbus A321 (321)
This flight number is listed as serving the following routes:
  • Bismarck (BIS) - Minneapolis/Saint Paul (MSP)
  • Raleigh/Durham (RDU) - Atlanta (ATL)
  • Santa Ana (SNA) - Salt Lake City (SLC)
All KLM flights
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