KLM flight KL 6603: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 10:35 Austin (AUS) 13:52 Atlanta (ATL) S
KL 6603 Non-stop Airbus A321 (321) 2:17 Effective 2025-06-08 through 2025-07-06
Codeshare flight, operated by Delta Air Lines.(DL 2976)
Daily 10:40 Austin (AUS) 14:00 Atlanta (ATL) S
KL 6603 Non-stop Airbus A321 (321) 2:20 Effective 2025-05-07 through 2025-05-24
Codeshare flight, operated by Delta Air Lines.(DL 2976)
Daily 10:40 Austin (AUS) 14:00 Atlanta (ATL) S
KL 6603 Non-stop Airbus A321 (321) 2:20 Effective 2025-05-26 through 2025-06-07
Codeshare flight, operated by Delta Air Lines.(DL 2976)
Sat 10:44 Austin (AUS) 13:56 Atlanta (ATL) S
KL 6603 Non-stop Airbus A321 (321) 2:12 Valid until 2025-05-03
Codeshare flight, operated by Delta Air Lines.(DL 2976)
Mon-Fri 10:45 Austin (AUS) 13:55 Atlanta (ATL) S
KL 6603 Non-stop Airbus A321 (321) 2:10 Valid until 2025-05-06
Codeshare flight, operated by Delta Air Lines.(DL 2976)
Daily 10:52 Austin (AUS) 14:08 Atlanta (ATL) S
KL 6603 Non-stop Airbus A321 (321) 2:16 Effective 2025-07-07 through 2025-09-07
Codeshare flight, operated by Delta Air Lines.(DL 2976)
Daily 10:52 Austin (AUS) 14:04 Atlanta (ATL) S
KL 6603 Non-stop Airbus A321 (321) 2:12 Effective 2025-09-08 through 2025-10-24
Codeshare flight, operated by Delta Air Lines.(DL 2976)
Sat 14:18 Atlanta (ATL) S 15:49 Austin (AUS)
KL 6603 Non-stop Airbus A321 (321) 2:31 Operates only on 2025-10-25
Codeshare flight, operated by Delta Air Lines.(DL 1397)
Sat 16:59 Austin (AUS) 20:16 Atlanta (ATL) S
KL 6603 Non-stop Airbus A321 (321) 2:17 Operates only on 2025-10-25
Codeshare flight, operated by Delta Air Lines.(DL 1397)
Daily 20:05 Atlanta (ATL) S 21:20 Colorado Springs (COS)
KL 6603 Non-stop Boeing 737-800 (738) 3:15 Effective 2025-10-26 through 2025-12-01
Codeshare flight, operated by Delta Air Lines.(DL 1507)
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This flight number is listed as serving the following routes:


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KLM flight KL 6603: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
KLM KL6603
10:35
Austin (AUS)

13:52
Atlanta (ATL) S
Effective 2025-06-08 through 2025-07-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2976)
Duration: 2:17, non-stop
Airbus A321 (321)
KLM KL6603
10:40
Austin (AUS)

14:00
Atlanta (ATL) S
Effective 2025-05-07 through 2025-05-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2976)
Duration: 2:20, non-stop
Airbus A321 (321)
KLM KL6603
10:40
Austin (AUS)

14:00
Atlanta (ATL) S
Effective 2025-05-26 through 2025-06-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2976)
Duration: 2:20, non-stop
Airbus A321 (321)
KLM KL6603
10:44
Austin (AUS)

13:56
Atlanta (ATL) S
Valid until 2025-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2976)
Duration: 2:12, non-stop
Airbus A321 (321)
KLM KL6603
10:45
Austin (AUS)

13:55
Atlanta (ATL) S
Valid until 2025-05-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2976)
Duration: 2:10, non-stop
Airbus A321 (321)
KLM KL6603
10:52
Austin (AUS)

14:08
Atlanta (ATL) S
Effective 2025-07-07 through 2025-09-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2976)
Duration: 2:16, non-stop
Airbus A321 (321)
KLM KL6603
10:52
Austin (AUS)

14:04
Atlanta (ATL) S
Effective 2025-09-08 through 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2976)
Duration: 2:12, non-stop
Airbus A321 (321)
KLM KL6603
14:18
Atlanta (ATL) S

15:49
Austin (AUS)
Operates only on 2025-10-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1397)
Duration: 2:31, non-stop
Airbus A321 (321)
KLM KL6603
16:59
Austin (AUS)

20:16
Atlanta (ATL) S
Operates only on 2025-10-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1397)
Duration: 2:17, non-stop
Airbus A321 (321)
KLM KL6603
20:05
Atlanta (ATL) S

21:20
Colorado Springs (COS)
Effective 2025-10-26 through 2025-12-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1507)
Duration: 3:15, non-stop
Boeing 737-800 (738)
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This flight number is listed as serving the following routes:
  • Atlanta (ATL) - Austin (AUS)
  • Atlanta (ATL) - Colorado Springs (COS)
All KLM flights
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