KLM
flight
KL 6637:
Multiple routes
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FLIGHT SCHEDULE
Direct Codeshare Flights:
KLM KL6637
Effective 2026-04-13 through 2026-05-05
Mon
Tue
Wed
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Thu
Fri
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Sat
Sun
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Codeshare flight, operated by Delta Air Lines.
(DL 1714)
Duration: 2:59, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
KLM KL6637
Effective 2026-05-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2606)
Duration: 2:50, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6637
Effective 2026-10-06 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2606)
Duration: 2:54, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6637
Effective 2026-03-29 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
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Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2640)
Duration: 2:52, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
KLM KL6637
Effective 2026-03-08 through 2026-03-14
Mon
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Tue
Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 714)
Duration: 5:29, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6637
Effective 2026-03-15 through 2026-03-28
Mon
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Tue
Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 714)
Duration: 5:31, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
KLM KL6637
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 4892)
Duration: 1:25, non-stop Canadair CRJ 900 (CR9)
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This flight number is listed as serving the following routes:
- Atlanta (ATL) - Jacksonville (OAJ)
- Atlanta (ATL) - Seattle-Tacoma (SEA)
- Los Angeles (LAX) - Seattle-Tacoma (SEA)