Southwest Airlines flight WN 3988: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Sun 06:45 Las Vegas Harry Reid (LAS) 1 09:35 Denver (DEN) WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2026-04-12 through 2026-05-17
Sun 06:45 Las Vegas Harry Reid (LAS) 1 09:35 Denver (DEN) WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Operates only on 2026-05-31
Sat 07:05 Las Vegas Harry Reid (LAS) 1 10:00 Denver (DEN) WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2026-04-11 through 2026-05-30
Sun 07:55 Las Vegas Harry Reid (LAS) 1 10:50 Denver (DEN) WN 3988 Non-stop Boeing 737-800 (73H) 1:55 Operates only on 2026-05-24
Mon,Thu,Fri 08:10 Las Vegas Harry Reid (LAS) 1 11:05 Denver (DEN) WN 3988 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-04-09 through 2026-06-01
Mon 08:40 Phoenix Sky Harbor (PHX) 4 12:45 Minneapolis/Saint Paul (MSP) 2 WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Operates only on 2026-01-05
Tue,Wed 08:45 Las Vegas Harry Reid (LAS) 1 11:40 Denver (DEN) WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2026-04-07 through 2026-06-03
Wed,Thu 09:00 Phoenix Sky Harbor (PHX) 4 13:00 Minneapolis/Saint Paul (MSP) 2 WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Valid until 2026-01-01
Sun 10:00 San Francisco (SFO) 2 11:30 Las Vegas Harry Reid (LAS) 1 WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Operates only on 2026-02-22
Mon,Tue,Fri,Sun 14:30 Phoenix Sky Harbor (PHX) 4 18:30 Minneapolis/Saint Paul (MSP) 2 WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Valid until 2026-01-04
Sun 17:00 Baltimore (BWI) 18:55 Atlanta (ATL) N WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri 17:10 Baltimore (BWI) 19:05 Atlanta (ATL) N WN 3988 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-08-06 through 2026-09-28
Mon,Thu,Fri 17:25 Saint Louis (STL) 2 19:15 Destin/Fort Walton Beach (VPS) WN 3988 Non-stop Boeing 737-800 (73H) 1:50 Effective 2026-06-04 through 2026-08-03
Tue,Wed 17:25 Destin/Fort Walton Beach (VPS) 19:15 Houston Hobby (HOU) WN 3988 Non-stop Boeing 737-800 (73H) 1:50 Effective 2026-06-09 through 2026-07-29
Sat 17:30 Baltimore (BWI) 19:25 Atlanta (ATL) N WN 3988 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-08-08 through 2026-09-26
Tue,Wed 17:40 Baltimore (BWI) 19:35 Atlanta (ATL) N WN 3988 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-08-04 through 2026-09-30
Sun 17:45 Denver (DEN) 23:20 New York LaGuardia (LGA) B WN 3988 Non-stop Boeing 737-800 (73H) 3:35 Effective 2026-03-08 through 2026-04-05
Mon,Thu,Fri 17:50 Denver (DEN) 23:25 New York LaGuardia (LGA) B WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2026-03-05 through 2026-04-06
Tue,Wed,Sat 17:50 Denver (DEN) 23:25 New York LaGuardia (LGA) B WN 3988 Non-stop Boeing 737-800 (73H) 3:35 Effective 2026-03-07 through 2026-04-04
Sat 18:05 Saint Louis (STL) 2 19:55 Destin/Fort Walton Beach (VPS) WN 3988 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 20:00 Destin/Fort Walton Beach (VPS) 21:50 Houston Hobby (HOU) WN 3988 Non-stop Boeing 737-800 (73H) 1:50 Effective 2026-06-04 through 2026-08-03
Non-Direct Flights:
Mon,Thu,Fri 17:25 Saint Louis (STL) 2 21:50 Houston Hobby (HOU) WN 3988 1-stop Boeing 737-800 (73H) 4:25 Effective 2026-06-04 through 2026-08-03

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Parallax here

This flight number is listed as serving the following routes:

Baltimore (BWI) - Atlanta (ATL)
Denver (DEN) - New York LaGuardia (LGA)
Destin/Fort Walton Beach (VPS) - Houston Hobby (HOU)
Las Vegas Harry Reid (LAS) - Denver (DEN)
Phoenix Sky Harbor (PHX) - Minneapolis/Saint Paul (MSP)
Saint Louis (STL) - Destin/Fort Walton Beach (VPS)
Saint Louis (STL) - Houston Hobby (HOU)
San Francisco (SFO) - Las Vegas Harry Reid (LAS)

All Southwest Airlines flights

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Southwest Airlines flight WN 3988: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3988

06:45

Las Vegas Harry Reid (LAS) 1

09:35

Denver (DEN)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

06:45

Las Vegas Harry Reid (LAS) 1

09:35

Denver (DEN)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

07:05

Las Vegas Harry Reid (LAS) 1

10:00

Denver (DEN)

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

07:55

Las Vegas Harry Reid (LAS) 1

10:50

Denver (DEN)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3988

08:10

Las Vegas Harry Reid (LAS) 1

11:05

Denver (DEN)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3988

08:40

Phoenix Sky Harbor (PHX) 4

12:45

Minneapolis/Saint Paul (MSP) 2

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

08:45

Las Vegas Harry Reid (LAS) 1

11:40

Denver (DEN)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

09:00

Phoenix Sky Harbor (PHX) 4

13:00

Minneapolis/Saint Paul (MSP) 2

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

10:00

San Francisco (SFO) 2

11:30

Las Vegas Harry Reid (LAS) 1

Operates only on 2026-02-22

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

14:30

Phoenix Sky Harbor (PHX) 4

18:30

Minneapolis/Saint Paul (MSP) 2

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

17:00

Baltimore (BWI)

18:55

Atlanta (ATL) N

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

17:10

Baltimore (BWI)

19:05

Atlanta (ATL) N

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3988

17:25

Saint Louis (STL) 2

19:15

Destin/Fort Walton Beach (VPS)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:50, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3988

17:25

Destin/Fort Walton Beach (VPS)

19:15

Houston Hobby (HOU)

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:50, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3988

17:30

Baltimore (BWI)

19:25

Atlanta (ATL) N

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3988

17:40

Baltimore (BWI)

19:35

Atlanta (ATL) N

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3988

17:45

Denver (DEN)

23:20

New York LaGuardia (LGA) B

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3988

17:50

Denver (DEN)

23:25

New York LaGuardia (LGA) B

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

17:50

Denver (DEN)

23:25

New York LaGuardia (LGA) B

Effective 2026-03-07 through 2026-04-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3988

18:05

Saint Louis (STL) 2

19:55

Destin/Fort Walton Beach (VPS)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3988

20:00

Destin/Fort Walton Beach (VPS)

21:50

Houston Hobby (HOU)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:50, non-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN3988

17:25

Saint Louis (STL) 2

21:50

Houston Hobby (HOU)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:25, 1-stop
Boeing 737-800 (73H)

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Parallax here

This flight number is listed as serving the following routes:

Baltimore (BWI) - Atlanta (ATL)
Denver (DEN) - New York LaGuardia (LGA)
Destin/Fort Walton Beach (VPS) - Houston Hobby (HOU)
Las Vegas Harry Reid (LAS) - Denver (DEN)
Phoenix Sky Harbor (PHX) - Minneapolis/Saint Paul (MSP)
Saint Louis (STL) - Destin/Fort Walton Beach (VPS)
Saint Louis (STL) - Houston Hobby (HOU)
San Francisco (SFO) - Las Vegas Harry Reid (LAS)

All Southwest Airlines flights

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