KLM flight KL 5421: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon-Fri 08:10 Atlanta (ATL) S 08:11 Huntsville (HSV) KL 5421 Non-stop Boeing 717 (717) 1:01 Effective 2026-02-12 through 2026-02-20 Codeshare flight, operated by Delta Air Lines.(DL 1896)
Mon-Wed,Fri,Sun 08:10 Atlanta (ATL) S 08:11 Huntsville (HSV) KL 5421 Non-stop Boeing 717 (717) 1:01 Effective 2026-02-22 through 2026-03-04 Codeshare flight, operated by Delta Air Lines.(DL 1896)
Thu,Fri 08:10 Atlanta (ATL) S 08:11 Huntsville (HSV) KL 5421 Non-stop Boeing 717 (717) 1:01 Effective 2026-03-05 through 2026-03-06 Codeshare flight, operated by Delta Air Lines.(DL 1896)
Mon-Fri 09:00 Huntsville (HSV) 10:56 Atlanta (ATL) S KL 5421 Non-stop Boeing 717 (717) 0:56 Effective 2026-02-12 through 2026-02-20 Codeshare flight, operated by Delta Air Lines.(DL 1896)
Mon-Wed,Fri,Sun 09:00 Huntsville (HSV) 10:56 Atlanta (ATL) S KL 5421 Non-stop Boeing 717 (717) 0:56 Effective 2026-02-22 through 2026-03-04 Codeshare flight, operated by Delta Air Lines.(DL 1896)
Thu,Fri 09:00 Huntsville (HSV) 10:56 Atlanta (ATL) S KL 5421 Non-stop Boeing 717 (717) 0:56 Effective 2026-03-05 through 2026-03-06 Codeshare flight, operated by Delta Air Lines.(DL 1896)
Mon-Fri,Sun 14:58 Lafayette (LFT) 17:39 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:41 Effective 2026-03-29 through 2026-04-12 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Mon-Fri,Sun 15:10 Lafayette (LFT) 17:58 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:48 Effective 2026-04-13 through 2026-05-22 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Mon-Fri,Sun 15:10 Lafayette (LFT) 17:58 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:48 Effective 2026-05-25 through 2026-06-12 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Daily 15:10 Lafayette (LFT) 17:58 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:48 Effective 2026-06-13 through 2026-07-06 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Daily 15:10 Lafayette (LFT) 18:01 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:51 Effective 2026-07-07 through 2026-10-05 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Daily 15:10 Lafayette (LFT) 17:56 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:46 Effective 2026-10-06 through 2026-10-24 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Mon,Tue,Fri-Sun 15:25 Atlanta (ATL) S 15:29 Huntsville (HSV) KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:04 Valid until 2026-01-04 Codeshare flight, operated by Delta Air Lines.(DL 4883)
Daily 15:30 Atlanta (ATL) S 17:54 New York John F. Kennedy (JFK) 4 KL 5421 Non-stop Boeing 737-900 (739) 2:24 Effective from 2026-10-25 Codeshare flight, operated by Delta Air Lines.(DL 2398)
Sat 16:00 Lafayette (LFT) 18:43 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:43 Effective 2026-04-04 through 2026-04-11 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Sat 16:00 Lafayette (LFT) 18:48 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:48 Effective 2026-04-18 through 2026-05-23 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Sat,Sun 16:00 Lafayette (LFT) 18:48 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:48 Effective 2026-05-24 through 2026-05-30 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Sat 16:00 Lafayette (LFT) 18:48 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:48 Operates only on 2026-06-06 Codeshare flight, operated by Delta Air Lines.(DL 5308)
Mon,Tue,Fri-Sun 16:09 Huntsville (HSV) 18:13 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:04 Valid until 2026-01-04 Codeshare flight, operated by Delta Air Lines.(DL 4883)
Sat 16:30 Atlanta (ATL) S 16:28 Huntsville (HSV) KL 5421 Non-stop Canadair CRJ 900 (CR9) 0:58 Operates only on 2026-02-14 Codeshare flight, operated by Delta Air Lines.(DL 5426)
Sat 17:12 Huntsville (HSV) 19:15 Atlanta (ATL) S KL 5421 Non-stop Canadair CRJ 900 (CR9) 1:03 Operates only on 2026-02-14 Codeshare flight, operated by Delta Air Lines.(DL 5426)
Mon,Thu,Fri,Sun 18:04 Atlanta (ATL) S 17:58 Huntsville (HSV) KL 5421 Non-stop Boeing 717 (717) 0:54 Effective 2026-01-19 through 2026-02-06 Codeshare flight, operated by Delta Air Lines.(DL 3171)
Mon 18:04 Atlanta (ATL) S 17:58 Huntsville (HSV) KL 5421 Non-stop Boeing 717 (717) 0:54 Operates only on 2026-02-09 Codeshare flight, operated by Delta Air Lines.(DL 3171)
Thu 18:14 Atlanta (ATL) S 18:08 Huntsville (HSV) KL 5421 Non-stop Boeing 717 (717) 0:54 Operates only on 2026-02-26 Codeshare flight, operated by Delta Air Lines.(DL 2285)
Daily 18:15 Atlanta (ATL) S 18:10 Huntsville (HSV) KL 5421 Non-stop Boeing 717 (717) 0:55 Effective 2026-03-08 through 2026-03-28 Codeshare flight, operated by Delta Air Lines.(DL 3171)
Mon,Thu,Fri,Sun 18:47 Huntsville (HSV) 21:04 Atlanta (ATL) S KL 5421 Non-stop Boeing 717 (717) 1:17 Effective 2026-01-19 through 2026-02-06 Codeshare flight, operated by Delta Air Lines.(DL 3171)
Mon 18:47 Huntsville (HSV) 21:04 Atlanta (ATL) S KL 5421 Non-stop Boeing 717 (717) 1:17 Operates only on 2026-02-09 Codeshare flight, operated by Delta Air Lines.(DL 3171)
Thu 18:55 Huntsville (HSV) 21:10 Atlanta (ATL) S KL 5421 Non-stop Boeing 717 (717) 1:15 Operates only on 2026-02-26 Codeshare flight, operated by Delta Air Lines.(DL 2285)
Mon,Thu,Fri,Sun 18:57 Huntsville (HSV) 21:08 Atlanta (ATL) S KL 5421 Non-stop Boeing 717 (717) 1:11 Effective 2026-03-08 through 2026-03-27 Codeshare flight, operated by Delta Air Lines.(DL 3171)
Tue,Wed,Sat 19:30 Atlanta (ATL) S 19:28 Huntsville (HSV) KL 5421 Non-stop Boeing 737-800 (738) 0:58 Effective 2026-01-20 through 2026-02-07 Codeshare flight, operated by Delta Air Lines.(DL 3171)
Tue,Wed,Sun 19:30 Atlanta (ATL) S 19:28 Huntsville (HSV) KL 5421 Non-stop Boeing 737-800 (738) 0:58 Effective 2026-02-08 through 2026-02-11 Codeshare flight, operated by Delta Air Lines.(DL 3171)

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This flight number is listed as serving the following routes:

Atlanta (ATL) - New York John F. Kennedy (JFK)
Huntsville (HSV) - Atlanta (ATL)
Lafayette (LFT) - Atlanta (ATL)

All KLM flights

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KLM flight KL 5421: Multiple routes

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FLIGHT SCHEDULE

Direct Codeshare Flights:

KLM KL5421

08:10

Atlanta (ATL) S

08:11

Huntsville (HSV)

Effective 2026-02-12 through 2026-02-20

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 1896)

Duration: 1:01, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

08:10

Atlanta (ATL) S

08:11

Huntsville (HSV)

Effective 2026-02-22 through 2026-03-04

Mon

Tue

Wed

Thu
-

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 1896)

Duration: 1:01, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

08:10

Atlanta (ATL) S

08:11

Huntsville (HSV)

Effective 2026-03-05 through 2026-03-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 1896)

Duration: 1:01, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

09:00

Huntsville (HSV)

10:56

Atlanta (ATL) S

Effective 2026-02-12 through 2026-02-20

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 1896)

Duration: 0:56, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

09:00

Huntsville (HSV)

10:56

Atlanta (ATL) S

Effective 2026-02-22 through 2026-03-04

Mon

Tue

Wed

Thu
-

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 1896)

Duration: 0:56, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

09:00

Huntsville (HSV)

10:56

Atlanta (ATL) S

Effective 2026-03-05 through 2026-03-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 1896)

Duration: 0:56, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

14:58

Lafayette (LFT)

17:39

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 5308)

Duration: 1:41, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

15:10

Lafayette (LFT)

17:58

Atlanta (ATL) S

Effective 2026-04-13 through 2026-05-22

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 5308)

Duration: 1:48, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

15:10

Lafayette (LFT)

17:58

Atlanta (ATL) S

Effective 2026-05-25 through 2026-06-12

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 5308)

Duration: 1:48, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

15:10

Lafayette (LFT)

17:58

Atlanta (ATL) S

Effective 2026-06-13 through 2026-07-06

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 5308)

Duration: 1:48, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

15:10

Lafayette (LFT)

18:01

Atlanta (ATL) S

Effective 2026-07-07 through 2026-10-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 5308)

Duration: 1:51, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

15:10

Lafayette (LFT)

17:56

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 5308)

Duration: 1:46, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

15:25

Atlanta (ATL) S

15:29

Huntsville (HSV)

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 4883)

Duration: 1:04, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

15:30

Atlanta (ATL) S

17:54

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 2398)

Duration: 2:24, non-stop
Boeing 737-900 (739)

Direct Codeshare Flights:

KLM KL5421

16:00

Lafayette (LFT)

18:43

Atlanta (ATL) S

Effective 2026-04-04 through 2026-04-11

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 5308)

Duration: 1:43, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

16:00

Lafayette (LFT)

18:48

Atlanta (ATL) S

Effective 2026-04-18 through 2026-05-23

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 5308)

Duration: 1:48, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

16:00

Lafayette (LFT)

18:48

Atlanta (ATL) S

Effective 2026-05-24 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 5308)

Duration: 1:48, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

16:00

Lafayette (LFT)

18:48

Atlanta (ATL) S

Operates only on 2026-06-06

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 5308)

Duration: 1:48, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

16:09

Huntsville (HSV)

18:13

Atlanta (ATL) S

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 4883)

Duration: 1:04, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

16:30

Atlanta (ATL) S

16:28

Huntsville (HSV)

Operates only on 2026-02-14

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 5426)

Duration: 0:58, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

17:12

Huntsville (HSV)

19:15

Atlanta (ATL) S

Operates only on 2026-02-14

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 5426)

Duration: 1:03, non-stop
Canadair CRJ 900 (CR9)

Direct Codeshare Flights:

KLM KL5421

18:04

Atlanta (ATL) S

17:58

Huntsville (HSV)

Effective 2026-01-19 through 2026-02-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 3171)

Duration: 0:54, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

18:04

Atlanta (ATL) S

17:58

Huntsville (HSV)

Operates only on 2026-02-09

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 3171)

Duration: 0:54, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

18:14

Atlanta (ATL) S

18:08

Huntsville (HSV)

Operates only on 2026-02-26

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2285)

Duration: 0:54, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

18:15

Atlanta (ATL) S

18:10

Huntsville (HSV)

Effective 2026-03-08 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 3171)

Duration: 0:55, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

18:47

Huntsville (HSV)

21:04

Atlanta (ATL) S

Effective 2026-01-19 through 2026-02-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 3171)

Duration: 1:17, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

18:47

Huntsville (HSV)

21:04

Atlanta (ATL) S

Operates only on 2026-02-09

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 3171)

Duration: 1:17, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

18:55

Huntsville (HSV)

21:10

Atlanta (ATL) S

Operates only on 2026-02-26

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2285)

Duration: 1:15, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

18:57

Huntsville (HSV)

21:08

Atlanta (ATL) S

Effective 2026-03-08 through 2026-03-27

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 3171)

Duration: 1:11, non-stop
Boeing 717 (717)

Direct Codeshare Flights:

KLM KL5421

19:30

Atlanta (ATL) S

19:28

Huntsville (HSV)

Effective 2026-01-20 through 2026-02-07

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 3171)

Duration: 0:58, non-stop
Boeing 737-800 (738)

Direct Codeshare Flights:

KLM KL5421

19:30

Atlanta (ATL) S

19:28

Huntsville (HSV)

Effective 2026-02-08 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 3171)

Duration: 0:58, non-stop
Boeing 737-800 (738)

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This flight number is listed as serving the following routes:

Atlanta (ATL) - New York John F. Kennedy (JFK)
Huntsville (HSV) - Atlanta (ATL)
Lafayette (LFT) - Atlanta (ATL)

All KLM flights

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