Southwest Airlines flight WN 3998: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 09:45 Midway, Chicago (MDW) 12:35 Richmond (RIC)
WN 3998 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-10-04 through 2025-11-01
Sun 11:00 Midway, Chicago (MDW) 14:10 Manchester (MHT)
WN 3998 Non-stop Boeing 737-800 (73H) 2:10 Operates only on 2025-05-25
Mon-Fri,Sun 12:00 Ronald Reagan Washington (DCA) 13:10 Saint Louis (STL) 2
WN 3998 Non-stop Boeing 737-800 (73H) 2:10 Effective 2025-08-05 through 2025-08-29
Mon-Fri,Sun 12:00 Ronald Reagan Washington (DCA) 13:10 Saint Louis (STL) 2
WN 3998 Non-stop Boeing 737-800 (73H) 2:10 Effective 2025-09-01 through 2025-10-01
Sun 12:20 Ronald Reagan Washington (DCA) 13:30 Saint Louis (STL) 2
WN 3998 Non-stop Boeing 737-700 (73W) 2:10 Operates only on 2025-08-31
Tue,Wed 13:25 Midway, Chicago (MDW) 16:15 Richmond (RIC)
WN 3998 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-10-07 through 2025-10-29
Sun 13:35 Midway, Chicago (MDW) 16:25 Richmond (RIC)
WN 3998 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-10-05 through 2025-10-26
Mon,Thu,Fri 13:50 New Orleans (MSY) 15:20 Nashville (BNA)
WN 3998 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2025-10-02 through 2025-10-31
Sat 14:40 West Palm Beach (PBI) 17:20 Islip (ISP)
WN 3998 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-11-22 through 2025-11-29
Sat 14:40 West Palm Beach (PBI) 17:20 Islip (ISP)
WN 3998 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-12-20 through 2026-01-03
Mon,Thu,Fri 14:55 Saint Louis (STL) 2 16:55 Austin (AUS)
WN 3998 Non-stop Boeing 737-700 (73W) 2:00 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 14:55 Saint Louis (STL) 2 16:55 Austin (AUS)
WN 3998 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2025-07-07 through 2025-08-04
Fri 15:30 Saint Louis (STL) 2 17:30 Austin (AUS)
WN 3998 Non-stop Boeing 737-700 (73W) 2:00 Operates only on 2025-07-04
Tue,Wed 16:50 Richmond (RIC) 17:40 Baltimore (BWI)
WN 3998 Non-stop Boeing 737-700 (Scimitar Winglets) 0:50 Effective 2025-10-07 through 2025-10-29
Sun 17:00 Richmond (RIC) 17:50 Baltimore (BWI)
WN 3998 Non-stop Boeing 737-700 (Scimitar Winglets) 0:50 Effective 2025-10-05 through 2025-10-26
Fri 18:05 Austin (AUS) 18:40 El Paso (ELP)
WN 3998 Non-stop Boeing 737-700 (73W) 1:35 Operates only on 2025-07-04
Tue,Wed 18:35 Saint Louis (STL) 2 20:35 Austin (AUS)
WN 3998 Non-stop Boeing 737-800 (73H) 2:00 Effective 2025-06-10 through 2025-07-30
Sat 21:10 Saint Louis (STL) 2 23:10 Austin (AUS)
WN 3998 Non-stop Boeing 737-800 (73H) 2:00 Effective 2025-06-07 through 2025-08-02
Sun 22:05 Saint Louis (STL) 2 00:05 Austin (AUS)
WN 3998 Non-stop Boeing 737-700 (73W) 2:00 Effective 2025-06-08 through 2025-08-03
The flight arrives 1 day after departure.
Sun 22:10 Sacramento (SMF) B 00:10 Seattle-Tacoma (SEA)
WN 3998 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Operates only on 2025-11-30
The flight arrives 1 day after departure.
Non-Direct Flights:
Tue,Wed 13:25 Midway, Chicago (MDW) 17:40 Baltimore (BWI)
WN 3998 1-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2025-10-07 through 2025-10-29
Sun 13:35 Midway, Chicago (MDW) 17:50 Baltimore (BWI)
WN 3998 1-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2025-10-05 through 2025-10-26
Fri 15:30 Saint Louis (STL) 2 18:40 El Paso (ELP)
WN 3998 1-stop Boeing 737-700 (73W) 4:10 Operates only on 2025-07-04
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 3998: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3998
09:45
Midway, Chicago (MDW)

12:35
Richmond (RIC)
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3998
11:00
Midway, Chicago (MDW)

14:10
Manchester (MHT)
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3998
12:00
Ronald Reagan Washington (DCA)

13:10
Saint Louis (STL) 2
Effective 2025-08-05 through 2025-08-29
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3998
12:00
Ronald Reagan Washington (DCA)

13:10
Saint Louis (STL) 2
Effective 2025-09-01 through 2025-10-01
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3998
12:20
Ronald Reagan Washington (DCA)

13:30
Saint Louis (STL) 2
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3998
13:25
Midway, Chicago (MDW)

16:15
Richmond (RIC)
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3998
13:35
Midway, Chicago (MDW)

16:25
Richmond (RIC)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3998
13:50
New Orleans (MSY)

15:20
Nashville (BNA)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3998
14:40
West Palm Beach (PBI)

17:20
Islip (ISP)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3998
14:40
West Palm Beach (PBI)

17:20
Islip (ISP)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3998
14:55
Saint Louis (STL) 2

16:55
Austin (AUS)
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3998
14:55
Saint Louis (STL) 2

16:55
Austin (AUS)
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3998
15:30
Saint Louis (STL) 2

17:30
Austin (AUS)
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3998
16:50
Richmond (RIC)

17:40
Baltimore (BWI)
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 0:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3998
17:00
Richmond (RIC)

17:50
Baltimore (BWI)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 0:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3998
18:05
Austin (AUS)

18:40
El Paso (ELP)
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3998
18:35
Saint Louis (STL) 2

20:35
Austin (AUS)
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3998
21:10
Saint Louis (STL) 2

23:10
Austin (AUS)
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:00, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3998
22:05
Saint Louis (STL) 2

00:05(+1)
Austin (AUS)
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737-700 (73W)
The flight arrives 1 day after departure.
Southwest Airlines WN3998
22:10
Sacramento (SMF) B

00:10(+1)
Seattle-Tacoma (SEA)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
The flight arrives 1 day after departure.
Non-Direct Flights:
Southwest Airlines WN3998
13:25
Midway, Chicago (MDW)

17:40
Baltimore (BWI)
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:15, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3998
13:35
Midway, Chicago (MDW)

17:50
Baltimore (BWI)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:15, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3998
15:30
Saint Louis (STL) 2

18:40
El Paso (ELP)
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 4:10, 1-stop
Boeing 737-700 (73W)
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This flight number is listed as serving the following routes:
  • Austin (AUS) - El Paso (ELP)
  • Midway, Chicago (MDW) - Baltimore (BWI)
  • Midway, Chicago (MDW) - Manchester (MHT)
  • Midway, Chicago (MDW) - Richmond (RIC)
  • New Orleans (MSY) - Nashville (BNA)
  • Richmond (RIC) - Baltimore (BWI)
  • Ronald Reagan Washington (DCA) - Saint Louis (STL)
  • Sacramento (SMF) - Seattle-Tacoma (SEA)
  • Saint Louis (STL) - Austin (AUS)
  • Saint Louis (STL) - El Paso (ELP)
  • West Palm Beach (PBI) - Islip (ISP)
All Southwest Airlines flights
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