KLM flight KL 6623: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon-Fri,Sun 07:25 Atlanta (ATL) S 09:34 Newark Liberty, New York (EWR) A KL 6623 Non-stop Boeing 737-900 (739) 2:09 Effective 2025-05-08 through 2025-05-23 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Mon-Fri,Sun 07:25 Atlanta (ATL) S 09:34 Newark Liberty, New York (EWR) A KL 6623 Non-stop Boeing 737-900 (739) 2:09 Effective 2025-05-26 through 2025-06-06 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Mon-Fri,Sun 07:25 Atlanta (ATL) S 09:34 Newark Liberty, New York (EWR) A KL 6623 Non-stop Airbus A321 (321) 2:09 Effective 2025-06-08 through 2025-06-15 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Sat 07:59 Newark Liberty, New York (EWR) A 10:20 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:21 Valid until 2025-05-03 Codeshare flight, operated by Delta Air Lines.(DL 2365)
Sat 07:59 Newark Liberty, New York (EWR) A 10:19 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:20 Effective 2025-05-10 through 2025-06-07 Codeshare flight, operated by Delta Air Lines.(DL 2365)
Sat 08:00 Newark Liberty, New York (EWR) A 10:19 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:19 Operates only on 2025-09-06 Codeshare flight, operated by Delta Air Lines.(DL 2365)
Fri 08:05 Newark Liberty, New York (EWR) A 10:21 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:16 Operates only on 2025-07-04 Codeshare flight, operated by Delta Air Lines.(DL 2365)
Daily 09:45 Atlanta (ATL) I 12:45 San Jose (SJO) M KL 6623 Non-stop Boeing 757 (757) 4:00 Effective 2025-12-20 through 2026-01-05 Codeshare flight, operated by Delta Air Lines.(DL 1937)
Daily 09:47 Atlanta (ATL) I 12:55 San Jose (SJO) M KL 6623 Non-stop Boeing 757 (757) 4:08 Effective from 2026-01-06 Codeshare flight, operated by Delta Air Lines.(DL 1937)
Daily 09:50 Atlanta (ATL) I 11:48 San Jose (SJO) M KL 6623 Non-stop Boeing 757 (757) 3:58 Effective 2025-10-26 through 2025-11-01 Codeshare flight, operated by Delta Air Lines.(DL 1937)
Mon-Wed,Sun 09:50 Atlanta (ATL) I 12:48 San Jose (SJO) M KL 6623 Non-stop Boeing 757 (757) 3:58 Effective 2025-11-02 through 2025-11-05 Codeshare flight, operated by Delta Air Lines.(DL 1937)
Daily 09:52 Atlanta (ATL) I 12:52 San Jose (SJO) M KL 6623 Non-stop Boeing 757 (757) 4:00 Effective 2025-11-06 through 2025-12-19 Codeshare flight, operated by Delta Air Lines.(DL 1937)
Tue,Wed 09:54 Newark Liberty, New York (EWR) A 12:23 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-800 (738) 2:29 Valid until 2025-05-06 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Mon,Tue,Fri-Sun 10:25 Newark Liberty, New York (EWR) A 12:44 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:19 Effective 2025-07-07 through 2025-08-15 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Mon,Tue,Fri,Sun 10:25 Newark Liberty, New York (EWR) A 12:44 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:19 Effective 2025-08-17 through 2025-08-26 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Mon,Thu,Fri 10:25 Newark Liberty, New York (EWR) A 12:44 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:19 Effective 2025-08-28 through 2025-09-05 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Sun 10:25 Newark Liberty, New York (EWR) A 12:44 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:19 Operates only on 2025-09-07 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Mon,Thu-Sun 10:25 Newark Liberty, New York (EWR) A 12:56 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:31 Effective 2025-09-08 through 2025-10-24 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Wed 10:39 Newark Liberty, New York (EWR) A 12:57 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:18 Operates only on 2025-05-07 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Mon-Fri,Sun 10:39 Newark Liberty, New York (EWR) A 12:58 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:19 Effective 2025-05-08 through 2025-05-23 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Mon-Thu,Sun 10:39 Newark Liberty, New York (EWR) A 12:57 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:18 Effective 2025-05-26 through 2025-06-05 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Fri 10:39 Newark Liberty, New York (EWR) A 12:58 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:19 Effective 2025-05-30 through 2025-06-06 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Mon-Fri,Sun 10:39 Newark Liberty, New York (EWR) A 12:56 Atlanta (ATL) S KL 6623 Non-stop Airbus A321 (321) 2:17 Effective 2025-06-08 through 2025-06-27 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Sun 10:40 Newark Liberty, New York (EWR) A 12:54 Atlanta (ATL) S KL 6623 Non-stop Airbus A321 (321) 2:14 Operates only on 2025-07-06 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Sat 11:10 Newark Liberty, New York (EWR) A 13:23 Atlanta (ATL) S KL 6623 Non-stop Airbus A321 (321) 2:13 Effective 2025-06-14 through 2025-07-05 Codeshare flight, operated by Delta Air Lines.(DL 2325)
Thu 19:12 Newark Liberty, New York (EWR) A 21:45 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-900 (739) 2:33 Operates only on 2025-05-01 Codeshare flight, operated by Delta Air Lines.(DL 2139)
Mon,Sun 19:17 Newark Liberty, New York (EWR) A 21:50 Atlanta (ATL) S KL 6623 Non-stop Boeing 737-800 (738) 2:33 Effective 2025-05-04 through 2025-05-05 Codeshare flight, operated by Delta Air Lines.(DL 2139)
Fri 19:29 Newark Liberty, New York (EWR) A 21:57 Atlanta (ATL) S KL 6623 Non-stop Airbus A321 (321) 2:28 Operates only on 2025-05-02 Codeshare flight, operated by Delta Air Lines.(DL 2139)

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This flight number is listed as serving the following routes:

Atlanta (ATL) - Newark Liberty, New York (EWR)
Atlanta (ATL) - San Jose (SJO)

All KLM flights

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KLM flight KL 6623: Multiple routes

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FLIGHT SCHEDULE

Direct Codeshare Flights:

KLM KL6623

07:25

Atlanta (ATL) S

09:34

Newark Liberty, New York (EWR) A

Effective 2025-05-08 through 2025-05-23

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:09, non-stop
Boeing 737-900 (739)

KLM KL6623

07:25

Atlanta (ATL) S

09:34

Newark Liberty, New York (EWR) A

Effective 2025-05-26 through 2025-06-06

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:09, non-stop
Boeing 737-900 (739)

KLM KL6623

07:25

Atlanta (ATL) S

09:34

Newark Liberty, New York (EWR) A

Effective 2025-06-08 through 2025-06-15

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:09, non-stop
Airbus A321 (321)

KLM KL6623

07:59

Newark Liberty, New York (EWR) A

10:20

Atlanta (ATL) S

Valid until 2025-05-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2365)

Duration: 2:21, non-stop
Boeing 737-900 (739)

KLM KL6623

07:59

Newark Liberty, New York (EWR) A

10:19

Atlanta (ATL) S

Effective 2025-05-10 through 2025-06-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2365)

Duration: 2:20, non-stop
Boeing 737-900 (739)

KLM KL6623

08:00

Newark Liberty, New York (EWR) A

10:19

Atlanta (ATL) S

Operates only on 2025-09-06

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2365)

Duration: 2:19, non-stop
Boeing 737-900 (739)

KLM KL6623

08:05

Newark Liberty, New York (EWR) A

10:21

Atlanta (ATL) S

Operates only on 2025-07-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2365)

Duration: 2:16, non-stop
Boeing 737-900 (739)

KLM KL6623

09:45

Atlanta (ATL) I

12:45

San Jose (SJO) M

Effective 2025-12-20 through 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 1937)

Duration: 4:00, non-stop
Boeing 757 (757)

KLM KL6623

09:47

Atlanta (ATL) I

12:55

San Jose (SJO) M

Effective from 2026-01-06

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 1937)

Duration: 4:08, non-stop
Boeing 757 (757)

KLM KL6623

09:50

Atlanta (ATL) I

11:48

San Jose (SJO) M

Effective 2025-10-26 through 2025-11-01

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 1937)

Duration: 3:58, non-stop
Boeing 757 (757)

KLM KL6623

09:50

Atlanta (ATL) I

12:48

San Jose (SJO) M

Effective 2025-11-02 through 2025-11-05

Mon

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 1937)

Duration: 3:58, non-stop
Boeing 757 (757)

KLM KL6623

09:52

Atlanta (ATL) I

12:52

San Jose (SJO) M

Effective 2025-11-06 through 2025-12-19

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 1937)

Duration: 4:00, non-stop
Boeing 757 (757)

KLM KL6623

09:54

Newark Liberty, New York (EWR) A

12:23

Atlanta (ATL) S

Valid until 2025-05-06

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:29, non-stop
Boeing 737-800 (738)

KLM KL6623

10:25

Newark Liberty, New York (EWR) A

12:44

Atlanta (ATL) S

Effective 2025-07-07 through 2025-08-15

Mon

Tue

Wed
-

Thu
-

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:19, non-stop
Boeing 737-900 (739)

KLM KL6623

10:25

Newark Liberty, New York (EWR) A

12:44

Atlanta (ATL) S

Effective 2025-08-17 through 2025-08-26

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:19, non-stop
Boeing 737-900 (739)

KLM KL6623

10:25

Newark Liberty, New York (EWR) A

12:44

Atlanta (ATL) S

Effective 2025-08-28 through 2025-09-05

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:19, non-stop
Boeing 737-900 (739)

KLM KL6623

10:25

Newark Liberty, New York (EWR) A

12:44

Atlanta (ATL) S

Operates only on 2025-09-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:19, non-stop
Boeing 737-900 (739)

KLM KL6623

10:25

Newark Liberty, New York (EWR) A

12:56

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 2325)

Duration: 2:31, non-stop
Boeing 737-900 (739)

KLM KL6623

10:39

Newark Liberty, New York (EWR) A

12:57

Atlanta (ATL) S

Operates only on 2025-05-07

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:18, non-stop
Boeing 737-900 (739)

KLM KL6623

10:39

Newark Liberty, New York (EWR) A

12:58

Atlanta (ATL) S

Effective 2025-05-08 through 2025-05-23

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:19, non-stop
Boeing 737-900 (739)

KLM KL6623

10:39

Newark Liberty, New York (EWR) A

12:57

Atlanta (ATL) S

Effective 2025-05-26 through 2025-06-05

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:18, non-stop
Boeing 737-900 (739)

KLM KL6623

10:39

Newark Liberty, New York (EWR) A

12:58

Atlanta (ATL) S

Effective 2025-05-30 through 2025-06-06

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:19, non-stop
Boeing 737-900 (739)

KLM KL6623

10:39

Newark Liberty, New York (EWR) A

12:56

Atlanta (ATL) S

Effective 2025-06-08 through 2025-06-27

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:17, non-stop
Airbus A321 (321)

KLM KL6623

10:40

Newark Liberty, New York (EWR) A

12:54

Atlanta (ATL) S

Operates only on 2025-07-06

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:14, non-stop
Airbus A321 (321)

KLM KL6623

11:10

Newark Liberty, New York (EWR) A

13:23

Atlanta (ATL) S

Effective 2025-06-14 through 2025-07-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2325)

Duration: 2:13, non-stop
Airbus A321 (321)

KLM KL6623

19:12

Newark Liberty, New York (EWR) A

21:45

Atlanta (ATL) S

Operates only on 2025-05-01

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2139)

Duration: 2:33, non-stop
Boeing 737-900 (739)

KLM KL6623

19:17

Newark Liberty, New York (EWR) A

21:50

Atlanta (ATL) S

Effective 2025-05-04 through 2025-05-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2139)

Duration: 2:33, non-stop
Boeing 737-800 (738)

KLM KL6623

19:29

Newark Liberty, New York (EWR) A

21:57

Atlanta (ATL) S

Operates only on 2025-05-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 2139)

Duration: 2:28, non-stop
Airbus A321 (321)

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This flight number is listed as serving the following routes:

Atlanta (ATL) - Newark Liberty, New York (EWR)
Atlanta (ATL) - San Jose (SJO)

All KLM flights

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- CACHE: False - LANG: en - IS_EU: False