Southwest Airlines flight WN 3456: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Tue,Wed 05:45 El Paso (ELP) 07:35 Denver (DEN)
WN 3456 Non-stop Boeing 737-800 (73H) 1:50 Valid until 2025-06-04
Sun 09:45 Austin (AUS) 10:50 Love Field, Dallas (DAL) 1
WN 3456 Non-stop Boeing 737-700 (73W) 1:05 Operates only on 2025-08-31
Tue,Wed 11:05 Houston Hobby (HOU) 14:30 Fort Lauderdale (FLL) 1
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2025-10-07 through 2025-10-29
Sat 11:45 New York LaGuardia (LGA) B 13:40 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737-800 (73H) 2:55 Effective 2025-11-22 through 2025-11-29
Sat 11:45 New York LaGuardia (LGA) B 13:40 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737-800 (73H) 2:55 Effective 2025-12-20 through 2026-01-03
Sun 11:55 Austin (AUS) 13:00 Love Field, Dallas (DAL) 1
WN 3456 Non-stop Boeing 737-800 (73H) 1:05 Effective 2025-08-10 through 2025-08-24
Sun 11:55 Austin (AUS) 13:00 Love Field, Dallas (DAL) 1
WN 3456 Non-stop Boeing 737-800 (73H) 1:05 Effective 2025-09-07 through 2025-09-28
Mon,Thu,Fri,Sun 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737-800 (73H) 2:50 Effective 2025-11-02 through 2025-11-16
Tue,Wed 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-11-04 through 2025-11-12
Mon-Thu 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-11-17 through 2025-11-20
Mon,Fri,Sun 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737-800 (73H) 2:50 Effective 2025-11-21 through 2025-11-28
Mon-Wed,Sun 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-11-25 through 2025-12-03
Mon-Fri 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-12-04 through 2025-12-11
Fri,Sun 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737-800 (73H) 2:50 Effective 2025-12-07 through 2025-12-14
Mon-Wed,Fri,Sun 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-12-15 through 2025-12-24
Thu 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737-800 (73H) 2:50 Operates only on 2025-12-18
Mon-Fri,Sun 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-12-25 through 2026-01-04
Mon 13:15 New York LaGuardia (LGA) B 15:05 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737-800 (73H) 2:50 Operates only on 2026-01-05
Sun 13:50 El Paso (ELP) 15:40 Denver (DEN)
WN 3456 Non-stop Boeing 737-800 (73H) 1:50 Operates only on 2025-05-25
Sat 14:50 New York LaGuardia (LGA) B 16:45 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737-800 (73H) 2:55 Effective 2025-11-08 through 2025-11-15
Sat 14:50 New York LaGuardia (LGA) B 16:45 Saint Louis (STL) 2
WN 3456 Non-stop Boeing 737-800 (73H) 2:55 Effective 2025-12-06 through 2025-12-13
Sun 15:05 Midway, Chicago (MDW) 17:20 Love Field, Dallas (DAL) 1
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2025-06-08 through 2025-08-03
Sat 15:15 El Paso (ELP) 17:05 Denver (DEN)
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Valid until 2025-05-31
Sun 16:35 Houston Hobby (HOU) 19:55 Fort Lauderdale (FLL) 1
WN 3456 Non-stop Boeing 737-800 (73H) 2:20 Effective 2025-10-05 through 2025-10-26
Sun 17:10 El Paso (ELP) 19:00 Denver (DEN)
WN 3456 Non-stop Boeing 737-800 (73H) 1:50 Valid until 2025-05-18
Sun 17:10 El Paso (ELP) 19:00 Denver (DEN)
WN 3456 Non-stop Boeing 737-800 (73H) 1:50 Operates only on 2025-06-01
Sat 18:05 Houston Hobby (HOU) 21:25 Fort Lauderdale (FLL) 1
WN 3456 Non-stop Boeing 737-800 (73H) 2:20 Effective 2025-10-04 through 2025-11-01
Mon,Thu,Fri 18:55 El Paso (ELP) 20:45 Denver (DEN)
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Valid until 2025-06-02
Mon,Thu,Fri 20:05 Houston Hobby (HOU) 23:25 Fort Lauderdale (FLL) 1
WN 3456 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2025-10-02 through 2025-10-31
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 3456: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3456
05:45
El Paso (ELP)

07:35
Denver (DEN)
Valid until 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
09:45
Austin (AUS)

10:50
Love Field, Dallas (DAL) 1
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3456
11:05
Houston Hobby (HOU)

14:30
Fort Lauderdale (FLL) 1
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
11:45
New York LaGuardia (LGA) B

13:40
Saint Louis (STL) 2
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
11:45
New York LaGuardia (LGA) B

13:40
Saint Louis (STL) 2
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
11:55
Austin (AUS)

13:00
Love Field, Dallas (DAL) 1
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
11:55
Austin (AUS)

13:00
Love Field, Dallas (DAL) 1
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Effective 2025-11-04 through 2025-11-12
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Effective 2025-11-17 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Effective 2025-11-25 through 2025-12-03
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Effective 2025-12-04 through 2025-12-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Effective 2025-12-15 through 2025-12-24
Mon
Tue
Wed
Thu
-
Fri
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Effective 2025-12-25 through 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
13:15
New York LaGuardia (LGA) B

15:05
Saint Louis (STL) 2
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
13:50
El Paso (ELP)

15:40
Denver (DEN)
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
14:50
New York LaGuardia (LGA) B

16:45
Saint Louis (STL) 2
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
14:50
New York LaGuardia (LGA) B

16:45
Saint Louis (STL) 2
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
15:05
Midway, Chicago (MDW)

17:20
Love Field, Dallas (DAL) 1
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
15:15
El Paso (ELP)

17:05
Denver (DEN)
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
16:35
Houston Hobby (HOU)

19:55
Fort Lauderdale (FLL) 1
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
17:10
El Paso (ELP)

19:00
Denver (DEN)
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
17:10
El Paso (ELP)

19:00
Denver (DEN)
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
18:05
Houston Hobby (HOU)

21:25
Fort Lauderdale (FLL) 1
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3456
18:55
El Paso (ELP)

20:45
Denver (DEN)
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3456
20:05
Houston Hobby (HOU)

23:25
Fort Lauderdale (FLL) 1
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Austin (AUS) - Love Field, Dallas (DAL)
  • El Paso (ELP) - Denver (DEN)
  • Houston Hobby (HOU) - Fort Lauderdale (FLL)
  • Midway, Chicago (MDW) - Love Field, Dallas (DAL)
  • New York LaGuardia (LGA) - Saint Louis (STL)
All Southwest Airlines flights
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