KLM flight KL 6640: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Thu,Fri,Sun 15:37 Atlanta (ATL) S 17:14 San Antonio (SAT) A
KL 6640 Non-stop Airbus A319 (319) 2:37 Effective 2026-03-29 through 2026-04-12
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Daily 15:40 Atlanta (ATL) S 17:13 San Antonio (SAT) A
KL 6640 Non-stop Airbus A320 (320) 2:33 Effective 2026-04-13 through 2026-06-06
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Daily 15:40 Atlanta (ATL) S 17:13 San Antonio (SAT) A
KL 6640 Non-stop Airbus A321 (321) 2:33 Effective 2026-06-07 through 2026-07-06
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Daily 15:40 Atlanta (ATL) S 17:09 San Antonio (SAT) A
KL 6640 Non-stop Airbus A321 (321) 2:29 Effective 2026-07-07 through 2026-10-05
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Daily 15:40 Atlanta (ATL) S 17:18 San Antonio (SAT) A
KL 6640 Non-stop Airbus A321 (321) 2:38 Effective 2026-10-06 through 2026-10-24
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Mon-Fri,Sun 15:56 Detroit (DTW) M 16:57 Birmingham (BHM)
KL 6640 Non-stop Canadair CRJ 700 (CR7) 2:01 Effective 2026-03-08 through 2026-03-27
Codeshare flight, operated by Delta Air Lines.(DL 4990)
Tue,Wed,Sat 16:35 Atlanta (ATL) S 18:12 San Antonio (SAT) A
KL 6640 Non-stop Airbus A321 (321) 2:37 Effective 2026-03-31 through 2026-04-11
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Mon-Fri,Sun 17:37 Birmingham (BHM) 20:45 Detroit (DTW) M
KL 6640 Non-stop Canadair CRJ 700 (CR7) 2:08 Effective 2026-03-08 through 2026-03-27
Codeshare flight, operated by Delta Air Lines.(DL 4990)
Mon,Thu,Fri,Sun 18:11 San Antonio (SAT) A 21:38 Atlanta (ATL) S
KL 6640 Non-stop Airbus A319 (319) 2:27 Effective 2026-03-29 through 2026-04-12
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Mon-Fri,Sun 18:15 San Antonio (SAT) A 21:48 Atlanta (ATL) S
KL 6640 Non-stop Airbus A321 (321) 2:33 Effective 2026-07-07 through 2026-09-04
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Mon-Fri,Sun 18:15 San Antonio (SAT) A 21:48 Atlanta (ATL) S
KL 6640 Non-stop Airbus A321 (321) 2:33 Effective 2026-09-07 through 2026-10-05
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Mon-Fri,Sun 18:15 San Antonio (SAT) A 21:37 Atlanta (ATL) S
KL 6640 Non-stop Airbus A321 (321) 2:22 Effective 2026-10-06 through 2026-10-23
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Mon,Thu,Fri,Sun 18:20 San Antonio (SAT) A 21:48 Atlanta (ATL) S
KL 6640 Non-stop Airbus A320 (320) 2:28 Effective 2026-04-13 through 2026-05-22
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Mon,Thu,Fri,Sun 18:20 San Antonio (SAT) A 21:48 Atlanta (ATL) S
KL 6640 Non-stop Airbus A320 (320) 2:28 Effective 2026-05-25 through 2026-06-05
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Mon-Fri,Sun 18:20 San Antonio (SAT) A 21:48 Atlanta (ATL) S
KL 6640 Non-stop Airbus A321 (321) 2:28 Effective 2026-06-07 through 2026-07-06
Codeshare flight, operated by Delta Air Lines.(DL 1465)
Daily 21:40 Atlanta (ATL) S 22:32 Springfield (SGF)
KL 6640 Non-stop Boeing 717 (717) 1:52 Effective from 2026-10-25
Codeshare flight, operated by Delta Air Lines.(DL 1105)
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This flight number is listed as serving the following routes:


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KLM flight KL 6640: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
KLM KL6640
15:37
Atlanta (ATL) S

17:14
San Antonio (SAT) A
Effective 2026-03-29 through 2026-04-12
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:37, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
KLM KL6640
15:40
Atlanta (ATL) S

17:13
San Antonio (SAT) A
Effective 2026-04-13 through 2026-06-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:33, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
KLM KL6640
15:40
Atlanta (ATL) S

17:13
San Antonio (SAT) A
Effective 2026-06-07 through 2026-07-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:33, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL6640
15:40
Atlanta (ATL) S

17:09
San Antonio (SAT) A
Effective 2026-07-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:29, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL6640
15:40
Atlanta (ATL) S

17:18
San Antonio (SAT) A
Effective 2026-10-06 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:38, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL6640
15:56
Detroit (DTW) M

16:57
Birmingham (BHM)
Effective 2026-03-08 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4990)
Duration: 2:01, non-stop
Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
KLM KL6640
16:35
Atlanta (ATL) S

18:12
San Antonio (SAT) A
Effective 2026-03-31 through 2026-04-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:37, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL6640
17:37
Birmingham (BHM)

20:45
Detroit (DTW) M
Effective 2026-03-08 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4990)
Duration: 2:08, non-stop
Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
KLM KL6640
18:11
San Antonio (SAT) A

21:38
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 1465)
Duration: 2:27, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
KLM KL6640
18:15
San Antonio (SAT) A

21:48
Atlanta (ATL) S
Effective 2026-07-07 through 2026-09-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:33, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL6640
18:15
San Antonio (SAT) A

21:48
Atlanta (ATL) S
Effective 2026-09-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:33, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL6640
18:15
San Antonio (SAT) A

21:37
Atlanta (ATL) S
Effective 2026-10-06 through 2026-10-23
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:22, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL6640
18:20
San Antonio (SAT) A

21:48
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 1465)
Duration: 2:28, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
KLM KL6640
18:20
San Antonio (SAT) A

21:48
Atlanta (ATL) S
Effective 2026-05-25 through 2026-06-05
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:28, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
KLM KL6640
18:20
San Antonio (SAT) A

21:48
Atlanta (ATL) S
Effective 2026-06-07 through 2026-07-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1465)
Duration: 2:28, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
KLM KL6640
21:40
Atlanta (ATL) S

22:32
Springfield (SGF)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1105)
Duration: 1:52, non-stop
Boeing 717 (717)
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This flight number is listed as serving the following routes:
  • Atlanta (ATL) - Springfield (SGF)
  • Detroit (DTW) - Birmingham (BHM)
  • San Antonio (SAT) - Atlanta (ATL)
All KLM flights
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