Southwest Airlines flight WN 3378: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 08:40 Pittsburgh (PIT) 09:05 Chicago Midway (MDW)
WN 3378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 08:45 Pittsburgh (PIT) 09:10 Chicago Midway (MDW)
WN 3378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-06-04 through 2026-08-03
Sat 08:45 Pittsburgh (PIT) 09:10 Chicago Midway (MDW)
WN 3378 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-06-06 through 2026-08-01
Sun 09:30 Pittsburgh (PIT) 12:00 Fort Myers (RSW)
WN 3378 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri 12:00 New York LaGuardia (LGA) B 13:40 Saint Louis (STL) 2
WN 3378 Non-stop Boeing 737-700 (Scimitar Winglets) 2:40 Effective 2026-08-06 through 2026-09-28
Mon,Thu,Fri 17:10 Houston Hobby (HOU) 18:45 Denver (DEN)
WN 3378 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-03-05 through 2026-04-06
Sat 17:30 Orlando (MCO) 20:15 Providence (PVD)
WN 3378 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-02-14 through 2026-02-28
Tue,Wed 17:40 Houston Hobby (HOU) 19:15 Denver (DEN)
WN 3378 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-03-10 through 2026-04-01
Sat 18:05 Chicago Midway (MDW) 20:35 Seattle-Tacoma (SEA)
WN 3378 Non-stop Boeing 737 MAX 8 (7M8) 4:30 Effective 2026-04-11 through 2026-05-30
Sun 18:15 Houston Hobby (HOU) 19:50 Denver (DEN)
WN 3378 Non-stop Boeing 737-700 (Scimitar Winglets) 2:35 Effective 2026-03-08 through 2026-04-05
Sat 18:25 Houston Hobby (HOU) 20:00 Denver (DEN)
WN 3378 Non-stop Boeing 737-700 (Scimitar Winglets) 2:35 Effective 2026-03-07 through 2026-04-04
Sun 21:10 Chicago Midway (MDW) 23:40 Seattle-Tacoma (SEA)
WN 3378 Non-stop Boeing 737-700 (Scimitar Winglets) 4:30 Operates only on 2026-05-24
Mon,Thu,Fri 21:35 Chicago Midway (MDW) 00:05 Seattle-Tacoma (SEA)
WN 3378 Non-stop Boeing 737 MAX 8 (7M8) 4:30 Effective 2026-04-09 through 2026-06-01
The flight arrives 1 day after departure.
Tue,Wed,Sun 21:40 Chicago Midway (MDW) 00:10 Seattle-Tacoma (SEA)
WN 3378 Non-stop Boeing 737 MAX 8 (7M8) 4:30 Effective 2026-04-07 through 2026-05-20
The flight arrives 1 day after departure.
Tue,Wed,Sun 21:40 Chicago Midway (MDW) 00:10 Seattle-Tacoma (SEA)
WN 3378 Non-stop Boeing 737 MAX 8 (7M8) 4:30 Effective 2026-05-26 through 2026-06-03
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 3378: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3378
08:40
Pittsburgh (PIT)

09:05
Chicago Midway (MDW)
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3378
08:45
Pittsburgh (PIT)

09:10
Chicago Midway (MDW)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3378
08:45
Pittsburgh (PIT)

09:10
Chicago Midway (MDW)
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3378
09:30
Pittsburgh (PIT)

12:00
Fort Myers (RSW)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3378
12:00
New York LaGuardia (LGA) B

13:40
Saint Louis (STL) 2
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3378
17:10
Houston Hobby (HOU)

18:45
Denver (DEN)
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3378
17:30
Orlando (MCO)

20:15
Providence (PVD)
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3378
17:40
Houston Hobby (HOU)

19:15
Denver (DEN)
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3378
18:05
Chicago Midway (MDW)

20:35
Seattle-Tacoma (SEA)
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3378
18:15
Houston Hobby (HOU)

19:50
Denver (DEN)
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3378
18:25
Houston Hobby (HOU)

20:00
Denver (DEN)
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3378
21:10
Chicago Midway (MDW)

23:40
Seattle-Tacoma (SEA)
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3378
21:35
Chicago Midway (MDW)

00:05(+1)
Seattle-Tacoma (SEA)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:30, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN3378
21:40
Chicago Midway (MDW)

00:10(+1)
Seattle-Tacoma (SEA)
Effective 2026-04-07 through 2026-05-20
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:30, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN3378
21:40
Chicago Midway (MDW)

00:10(+1)
Seattle-Tacoma (SEA)
Effective 2026-05-26 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:30, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:
  • Chicago Midway (MDW) - Seattle-Tacoma (SEA)
  • Houston Hobby (HOU) - Denver (DEN)
  • New York LaGuardia (LGA) - Saint Louis (STL)
  • Orlando (MCO) - Providence (PVD)
  • Pittsburgh (PIT) - Chicago Midway (MDW)
  • Pittsburgh (PIT) - Fort Myers (RSW)
All Southwest Airlines flights
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