Delta Air Lines flight DL 623: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 10:40 Denver (DEN) 15:36 Atlanta (ATL) S
DL 623 Non-stop Airbus A321 (321) 2:56 Effective 2025-05-07 through 2025-06-07
Daily 11:15 Salt Lake City (SLC) 15:08 Kahului (OGG)
DL 623 Non-stop Boeing 767 (76W) 6:53 Effective 2025-12-19 through 2026-01-05
Mon-Fri,Sun 14:51 George Bush, Houston (IAH) A 17:54 Atlanta (ATL) S
DL 623 Non-stop Airbus A321 (321) 2:03 Valid until 2025-05-02
Mon,Tue,Sat,Sun 14:51 George Bush, Houston (IAH) A 17:54 Atlanta (ATL) S
DL 623 Non-stop Airbus A321 (321) 2:03 Effective 2025-05-03 through 2025-05-06
Sat 19:30 Atlanta (ATL) S 22:02 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 737-900 (739) 5:32 Effective 2025-06-14 through 2025-07-05
Sat 19:30 Atlanta (ATL) S 22:03 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 757-300 (753) 5:33 Effective 2025-07-12 through 2025-08-09
Daily 19:43 Atlanta (ATL) S 22:25 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 757-300 (753) 5:42 Effective 2025-09-08 through 2025-11-05
Daily 19:44 Atlanta (ATL) S 22:25 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 737-900 (739) 5:41 Effective 2025-11-06 through 2025-11-30
Mon,Thu,Fri,Sun 19:49 Atlanta (ATL) S 22:22 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 757-300 (753) 5:33 Effective 2025-07-07 through 2025-08-15
Mon,Thu-Sun 19:49 Atlanta (ATL) S 22:22 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 757-300 (753) 5:33 Effective 2025-08-16 through 2025-09-07
Mon,Thu,Fri,Sun 19:52 Atlanta (ATL) S 22:24 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 737-900 (739) 5:32 Effective 2025-06-08 through 2025-06-27
Sun 19:52 Atlanta (ATL) S 22:24 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 737-900 (739) 5:32 Operates only on 2025-07-06
Tue,Wed 20:30 Atlanta (ATL) S 23:05 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 737-900 (739) 5:35 Effective 2025-06-10 through 2025-06-25
Mon-Fri,Sun 20:30 Atlanta (ATL) S 23:05 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 737-900 (739) 5:35 Effective 2025-06-29 through 2025-07-04
Tue,Wed 20:30 Atlanta (ATL) S 23:03 Seattle-Tacoma (SEA)
DL 623 Non-stop Boeing 757-300 (753) 5:33 Effective 2025-07-08 through 2025-09-03
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This flight number is listed as serving the following routes:


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Delta Air Lines flight DL 623: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL623
10:40
Denver (DEN)

15:36
Atlanta (ATL) S
Effective 2025-05-07 through 2025-06-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:56, non-stop
Airbus A321 (321)
Delta Air Lines DL623
11:15
Salt Lake City (SLC)

15:08
Kahului (OGG)
Effective 2025-12-19 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:53, non-stop
Boeing 767 (76W)
Delta Air Lines DL623
14:51
George Bush, Houston (IAH) A

17:54
Atlanta (ATL) S
Valid until 2025-05-02
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:03, non-stop
Airbus A321 (321)
Delta Air Lines DL623
14:51
George Bush, Houston (IAH) A

17:54
Atlanta (ATL) S
Effective 2025-05-03 through 2025-05-06
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 2:03, non-stop
Airbus A321 (321)
Delta Air Lines DL623
19:30
Atlanta (ATL) S

22:02
Seattle-Tacoma (SEA)
Effective 2025-06-14 through 2025-07-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:32, non-stop
Boeing 737-900 (739)
Delta Air Lines DL623
19:30
Atlanta (ATL) S

22:03
Seattle-Tacoma (SEA)
Effective 2025-07-12 through 2025-08-09
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:33, non-stop
Boeing 757-300 (753)
Delta Air Lines DL623
19:43
Atlanta (ATL) S

22:25
Seattle-Tacoma (SEA)
Effective 2025-09-08 through 2025-11-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:42, non-stop
Boeing 757-300 (753)
Delta Air Lines DL623
19:44
Atlanta (ATL) S

22:25
Seattle-Tacoma (SEA)
Effective 2025-11-06 through 2025-11-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:41, non-stop
Boeing 737-900 (739)
Delta Air Lines DL623
19:49
Atlanta (ATL) S

22:22
Seattle-Tacoma (SEA)
Effective 2025-07-07 through 2025-08-15
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:33, non-stop
Boeing 757-300 (753)
Delta Air Lines DL623
19:49
Atlanta (ATL) S

22:22
Seattle-Tacoma (SEA)
Effective 2025-08-16 through 2025-09-07
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 5:33, non-stop
Boeing 757-300 (753)
Delta Air Lines DL623
19:52
Atlanta (ATL) S

22:24
Seattle-Tacoma (SEA)
Effective 2025-06-08 through 2025-06-27
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:32, non-stop
Boeing 737-900 (739)
Delta Air Lines DL623
19:52
Atlanta (ATL) S

22:24
Seattle-Tacoma (SEA)
Operates only on 2025-07-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:32, non-stop
Boeing 737-900 (739)
Delta Air Lines DL623
20:30
Atlanta (ATL) S

23:05
Seattle-Tacoma (SEA)
Effective 2025-06-10 through 2025-06-25
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:35, non-stop
Boeing 737-900 (739)
Delta Air Lines DL623
20:30
Atlanta (ATL) S

23:05
Seattle-Tacoma (SEA)
Effective 2025-06-29 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 5:35, non-stop
Boeing 737-900 (739)
Delta Air Lines DL623
20:30
Atlanta (ATL) S

23:03
Seattle-Tacoma (SEA)
Effective 2025-07-08 through 2025-09-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:33, non-stop
Boeing 757-300 (753)
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This flight number is listed as serving the following routes:
  • Atlanta (ATL) - Seattle-Tacoma (SEA)
  • Denver (DEN) - Atlanta (ATL)
  • George Bush, Houston (IAH) - Atlanta (ATL)
  • Salt Lake City (SLC) - Kahului (OGG)
All Delta Air Lines flights
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