KLM flight KL 5621: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 09:12 Atlanta (ATL) S 10:40 Melbourne (MLB)
KL 5621 Non-stop Boeing 717 (717) 1:28 Effective 2026-03-08 through 2026-03-28
Codeshare flight, operated by Delta Air Lines.(DL 3118)
Mon-Sat 09:45 Atlanta (ATL) S 11:26 San Antonio (SAT) A
KL 5621 Non-stop Airbus A321 (321) 2:41 Effective from 2026-10-26
Codeshare flight, operated by Delta Air Lines.(DL 1121)
Daily 11:24 Melbourne (MLB) 13:03 Atlanta (ATL) S
KL 5621 Non-stop Boeing 717 (717) 1:39 Effective 2026-01-05 through 2026-02-11
Codeshare flight, operated by Delta Air Lines.(DL 3118)
Daily 11:25 Melbourne (MLB) 13:05 Atlanta (ATL) S
KL 5621 Non-stop Boeing 717 (717) 1:40 Effective 2026-03-08 through 2026-03-28
Codeshare flight, operated by Delta Air Lines.(DL 3118)
Daily 11:26 Melbourne (MLB) 13:03 Atlanta (ATL) S
KL 5621 Non-stop Boeing 717 (717) 1:37 Effective 2026-02-12 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 3118)
Wed,Thu,Sat 11:30 Melbourne (MLB) 13:08 Atlanta (ATL) S
KL 5621 Non-stop Boeing 717 (717) 1:38 Valid until 2026-01-03
Codeshare flight, operated by Delta Air Lines.(DL 3118)
Mon,Tue,Fri,Sun 11:30 Melbourne (MLB) 13:07 Atlanta (ATL) S
KL 5621 Non-stop Boeing 717 (717) 1:37 Valid until 2026-01-04
Codeshare flight, operated by Delta Air Lines.(DL 3118)
Daily 12:15 San Antonio (SAT) A 15:33 Atlanta (ATL) S
KL 5621 Non-stop Airbus A321 (321) 2:18 Effective from 2026-10-25
Codeshare flight, operated by Delta Air Lines.(DL 1121)
Daily 19:30 Atlanta (ATL) S 20:22 Shreveport (SHV)
KL 5621 Non-stop Canadair CRJ 900 (CR9) 1:52 Effective 2026-04-13 through 2026-06-12
Codeshare flight, operated by Delta Air Lines.(DL 5163)
Mon-Fri,Sun 19:30 Atlanta (ATL) S 20:22 Shreveport (SHV)
KL 5621 Non-stop Canadair CRJ 900 (CR9) 1:52 Effective 2026-06-14 through 2026-07-06
Codeshare flight, operated by Delta Air Lines.(DL 5163)
Mon-Fri,Sun 19:30 Atlanta (ATL) S 20:20 Shreveport (SHV)
KL 5621 Non-stop Canadair CRJ 900 (CR9) 1:50 Effective 2026-07-07 through 2026-09-04
Codeshare flight, operated by Delta Air Lines.(DL 5163)
Mon-Fri,Sun 19:30 Atlanta (ATL) S 20:20 Shreveport (SHV)
KL 5621 Non-stop Canadair CRJ 900 (CR9) 1:50 Effective 2026-09-07 through 2026-10-05
Codeshare flight, operated by Delta Air Lines.(DL 5163)
Mon-Fri,Sun 19:30 Atlanta (ATL) S 20:25 Shreveport (SHV)
KL 5621 Non-stop Canadair CRJ 900 (CR9) 1:55 Effective 2026-10-06 through 2026-10-23
Codeshare flight, operated by Delta Air Lines.(DL 5163)
Daily 21:50 Atlanta (ATL) S 22:44 Shreveport (SHV)
KL 5621 Non-stop Embraer EMB 175 (E7W) 1:54 Effective 2026-03-29 through 2026-04-12
Codeshare flight, operated by Delta Air Lines.(DL 3827)
This flight number is listed as serving the following routes:


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KLM flight KL 5621: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
KLM KL5621
09:12
Atlanta (ATL) S

10:40
Melbourne (MLB)
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3118)
Duration: 1:28, non-stop
Boeing 717 (717)
Direct Codeshare Flights:
KLM KL5621
09:45
Atlanta (ATL) S

11:26
San Antonio (SAT) A
Effective from 2026-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1121)
Duration: 2:41, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL5621
11:24
Melbourne (MLB)

13:03
Atlanta (ATL) S
Effective 2026-01-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3118)
Duration: 1:39, non-stop
Boeing 717 (717)
Direct Codeshare Flights:
KLM KL5621
11:25
Melbourne (MLB)

13:05
Atlanta (ATL) S
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3118)
Duration: 1:40, non-stop
Boeing 717 (717)
Direct Codeshare Flights:
KLM KL5621
11:26
Melbourne (MLB)

13:03
Atlanta (ATL) S
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3118)
Duration: 1:37, non-stop
Boeing 717 (717)
Direct Codeshare Flights:
KLM KL5621
11:30
Melbourne (MLB)

13:08
Atlanta (ATL) S
Valid until 2026-01-03
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 3118)
Duration: 1:38, non-stop
Boeing 717 (717)
Direct Codeshare Flights:
KLM KL5621
11:30
Melbourne (MLB)

13:07
Atlanta (ATL) S
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3118)
Duration: 1:37, non-stop
Boeing 717 (717)
Direct Codeshare Flights:
KLM KL5621
12:15
San Antonio (SAT) A

15:33
Atlanta (ATL) S
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1121)
Duration: 2:18, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL5621
19:30
Atlanta (ATL) S

20:22
Shreveport (SHV)
Effective 2026-04-13 through 2026-06-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5163)
Duration: 1:52, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
KLM KL5621
19:30
Atlanta (ATL) S

20:22
Shreveport (SHV)
Effective 2026-06-14 through 2026-07-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5163)
Duration: 1:52, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
KLM KL5621
19:30
Atlanta (ATL) S

20:20
Shreveport (SHV)
Effective 2026-07-07 through 2026-09-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5163)
Duration: 1:50, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
KLM KL5621
19:30
Atlanta (ATL) S

20:20
Shreveport (SHV)
Effective 2026-09-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5163)
Duration: 1:50, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
KLM KL5621
19:30
Atlanta (ATL) S

20:25
Shreveport (SHV)
Effective 2026-10-06 through 2026-10-23
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5163)
Duration: 1:55, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
KLM KL5621
21:50
Atlanta (ATL) S

22:44
Shreveport (SHV)
Effective 2026-03-29 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3827)
Duration: 1:54, non-stop
Embraer EMB 175 (E7W)
This flight number is listed as serving the following routes:
  • Atlanta (ATL) - Shreveport (SHV)
  • Melbourne (MLB) - Atlanta (ATL)
  • San Antonio (SAT) - Atlanta (ATL)
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