Southwest Airlines flight WN 3855: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 06:05 Chicago Midway (MDW) 09:00 Philadelphia (PHL) E
WN 3855 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Valid until 2026-01-03
Sun 06:10 Chicago Midway (MDW) 07:40 Nashville (BNA)
WN 3855 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-06-07 through 2026-08-02
Mon,Tue,Fri,Sun 06:15 Chicago Midway (MDW) 09:10 Philadelphia (PHL) E
WN 3855 Non-stop Boeing 737-800 (73H) 1:55 Valid until 2026-01-04
Sat 06:35 Kansas City (MCI) 07:40 Saint Louis (STL) 2
WN 3855 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 06:35 Santa Barbara (SBA) 07:45 Oakland (OAK) 2
WN 3855 Non-stop Boeing 737-800 (73H) 1:10 Effective 2026-08-06 through 2026-09-28
Tue,Wed 10:25 Orlando (MCO) 12:25 Kansas City (MCI)
WN 3855 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-06-09 through 2026-07-29
Sun 13:50 Saint Louis (STL) 2 14:55 Kansas City (MCI)
WN 3855 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-08-09 through 2026-09-27
Sat 14:15 Saint Louis (STL) 2 15:20 Kansas City (MCI)
WN 3855 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-08-08 through 2026-09-26
Tue,Wed 14:50 Saint Louis (STL) 2 15:55 Kansas City (MCI)
WN 3855 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-08-04 through 2026-09-30
Sun 17:45 Kansas City (MCI) 19:55 Houston Hobby (HOU)
WN 3855 Non-stop Boeing 737-800 (73H) 2:10 Operates only on 2026-05-24
Tue,Wed 20:20 Phoenix Sky Harbor (PHX) 4 23:00 Portland (PDX)
WN 3855 Non-stop Boeing 737-800 (73H) 2:40 Effective 2026-04-07 through 2026-06-03
Sat 21:40 Chicago Midway (MDW) 00:20 San Francisco (SFO) 2
WN 3855 Non-stop Boeing 737 MAX 8 (7M8) 4:40 Operates only on 2026-03-07
The flight arrives 1 day after departure.
Sun 22:45 Phoenix Sky Harbor (PHX) 4 01:25 Portland (PDX)
WN 3855 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-04-12 through 2026-05-17
The flight arrives 1 day after departure.
Sun 22:45 Phoenix Sky Harbor (PHX) 4 01:25 Portland (PDX)
WN 3855 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Operates only on 2026-05-31
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 3855: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3855
06:05
Chicago Midway (MDW)

09:00
Philadelphia (PHL) E
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3855
06:10
Chicago Midway (MDW)

07:40
Nashville (BNA)
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3855
06:15
Chicago Midway (MDW)

09:10
Philadelphia (PHL) E
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3855
06:35
Kansas City (MCI)

07:40
Saint Louis (STL) 2
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3855
06:35
Santa Barbara (SBA)

07:45
Oakland (OAK) 2
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3855
10:25
Orlando (MCO)

12:25
Kansas City (MCI)
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:00, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3855
13:50
Saint Louis (STL) 2

14:55
Kansas City (MCI)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3855
14:15
Saint Louis (STL) 2

15:20
Kansas City (MCI)
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3855
14:50
Saint Louis (STL) 2

15:55
Kansas City (MCI)
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3855
17:45
Kansas City (MCI)

19:55
Houston Hobby (HOU)
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3855
20:20
Phoenix Sky Harbor (PHX) 4

23:00
Portland (PDX)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3855
21:40
Chicago Midway (MDW)

00:20(+1)
San Francisco (SFO) 2
Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:40, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN3855
22:45
Phoenix Sky Harbor (PHX) 4

01:25(+1)
Portland (PDX)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN3855
22:45
Phoenix Sky Harbor (PHX) 4

01:25(+1)
Portland (PDX)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, 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) - Nashville (BNA)
  • Chicago Midway (MDW) - Philadelphia (PHL)
  • Chicago Midway (MDW) - San Francisco (SFO)
  • Kansas City (MCI) - Houston Hobby (HOU)
  • Orlando (MCO) - Kansas City (MCI)
  • Phoenix Sky Harbor (PHX) - Portland (PDX)
  • Saint Louis (STL) - Kansas City (MCI)
  • Santa Barbara (SBA) - Oakland (OAK)
All Southwest Airlines flights
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