KLM flight KL 6631: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 07:00 New York John F. Kennedy (JFK) 4 10:35 Austin (AUS)
KL 6631 Non-stop Boeing 737-900 (739) 4:35 Effective 2026-02-12 through 2026-02-23
Codeshare flight, operated by Delta Air Lines.(DL 1406)
Mon-Sat 07:00 New York John F. Kennedy (JFK) 4 10:35 Austin (AUS)
KL 6631 Non-stop Boeing 737-900 (739) 4:35 Effective 2026-02-25 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 1406)
Daily 07:10 New York John F. Kennedy (JFK) 4 10:33 Austin (AUS)
KL 6631 Non-stop Boeing 737-900 (739) 4:23 Effective 2026-03-08 through 2026-03-28
Codeshare flight, operated by Delta Air Lines.(DL 1406)
Daily 09:00 Kingston (KIN) 13:12 Atlanta (ATL) I
KL 6631 Non-stop Boeing 737-800 (738) 3:12 Effective 2026-03-29 through 2026-04-12
Codeshare flight, operated by Delta Air Lines.(DL 1841)
Daily 09:00 Kingston (KIN) 13:06 Atlanta (ATL) I
KL 6631 Non-stop Boeing 737-900 (739) 3:06 Effective 2026-04-13 through 2026-08-02
Codeshare flight, operated by Delta Air Lines.(DL 1841)
Daily 09:00 Kingston (KIN) 13:01 Atlanta (ATL) I
KL 6631 Non-stop Boeing 737-900 (739) 3:01 Effective 2026-08-03 through 2026-09-10
Codeshare flight, operated by Delta Air Lines.(DL 1841)
Daily 09:00 Kingston (KIN) 13:10 Atlanta (ATL) I
KL 6631 Non-stop Boeing 737-800 (738) 3:10 Effective 2026-09-11 through 2026-10-24
Codeshare flight, operated by Delta Air Lines.(DL 1841)
Daily 11:44 Austin (AUS) 16:29 New York John F. Kennedy (JFK) 4
KL 6631 Non-stop Boeing 737-900 (739) 3:45 Effective 2026-03-08 through 2026-03-28
Codeshare flight, operated by Delta Air Lines.(DL 1406)
Daily 11:45 Austin (AUS) 16:25 New York John F. Kennedy (JFK) 4
KL 6631 Non-stop Boeing 737-900 (739) 3:40 Effective 2026-01-05 through 2026-02-11
Codeshare flight, operated by Delta Air Lines.(DL 1406)
Daily 11:45 Austin (AUS) 16:27 New York John F. Kennedy (JFK) 4
KL 6631 Non-stop Boeing 737-900 (739) 3:42 Effective 2026-02-12 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 1406)
Daily 12:52 Austin (AUS) 17:41 New York John F. Kennedy (JFK) 4
KL 6631 Non-stop Airbus A320 (320) 3:49 Valid until 2026-01-03
Codeshare flight, operated by Delta Air Lines.(DL 1406)
Sun 12:52 Austin (AUS) 17:40 New York John F. Kennedy (JFK) 4
KL 6631 Non-stop Airbus A320 (320) 3:48 Operates only on 2026-01-04
Codeshare flight, operated by Delta Air Lines.(DL 1406)
Mon-Fri,Sun 16:55 Atlanta (ATL) S 17:17 Gulfport/Biloxi (GPT)
KL 6631 Non-stop Boeing 717 (717) 1:22 Effective from 2026-10-25
Codeshare flight, operated by Delta Air Lines.(DL 3063)
Daily 18:00 Gulfport/Biloxi (GPT) 20:28 Atlanta (ATL) S
KL 6631 Non-stop Boeing 717 (717) 1:28 Effective from 2026-10-25
Codeshare flight, operated by Delta Air Lines.(DL 3063)
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This flight number is listed as serving the following routes:


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KLM flight KL 6631: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
KLM KL6631
07:00
New York John F. Kennedy (JFK) 4

10:35
Austin (AUS)
Effective 2026-02-12 through 2026-02-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1406)
Duration: 4:35, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6631
07:00
New York John F. Kennedy (JFK) 4

10:35
Austin (AUS)
Effective 2026-02-25 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1406)
Duration: 4:35, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6631
07:10
New York John F. Kennedy (JFK) 4

10:33
Austin (AUS)
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1406)
Duration: 4:23, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6631
09:00
Kingston (KIN)

13:12
Atlanta (ATL) I
Effective 2026-03-29 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1841)
Duration: 3:12, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
KLM KL6631
09:00
Kingston (KIN)

13:06
Atlanta (ATL) I
Effective 2026-04-13 through 2026-08-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1841)
Duration: 3:06, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6631
09:00
Kingston (KIN)

13:01
Atlanta (ATL) I
Effective 2026-08-03 through 2026-09-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1841)
Duration: 3:01, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6631
09:00
Kingston (KIN)

13:10
Atlanta (ATL) I
Effective 2026-09-11 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1841)
Duration: 3:10, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
KLM KL6631
11:44
Austin (AUS)

16:29
New York John F. Kennedy (JFK) 4
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1406)
Duration: 3:45, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6631
11:45
Austin (AUS)

16:25
New York John F. Kennedy (JFK) 4
Effective 2026-01-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1406)
Duration: 3:40, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6631
11:45
Austin (AUS)

16:27
New York John F. Kennedy (JFK) 4
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1406)
Duration: 3:42, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6631
12:52
Austin (AUS)

17:41
New York John F. Kennedy (JFK) 4
Valid until 2026-01-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1406)
Duration: 3:49, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
KLM KL6631
12:52
Austin (AUS)

17:40
New York John F. Kennedy (JFK) 4
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1406)
Duration: 3:48, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
KLM KL6631
16:55
Atlanta (ATL) S

17:17
Gulfport/Biloxi (GPT)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3063)
Duration: 1:22, non-stop
Boeing 717 (717)
Direct Codeshare Flights:
KLM KL6631
18:00
Gulfport/Biloxi (GPT)

20:28
Atlanta (ATL) S
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3063)
Duration: 1:28, non-stop
Boeing 717 (717)
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This flight number is listed as serving the following routes:
  • Atlanta (ATL) - Gulfport/Biloxi (GPT)
  • Austin (AUS) - New York John F. Kennedy (JFK)
  • Kingston (KIN) - Atlanta (ATL)
All KLM flights
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