Southwest Airlines flight WN 4978: Multiple routes

FLIGHT SCHEDULE
Direct Flights:
Mon-Fri 05:00 Milwaukee (MKE) 08:10 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 05:00 Milwaukee (MKE) 08:10 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2026-01-18 through 2026-01-23
Mon-Fri 05:00 Milwaukee (MKE) 08:10 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 05:00 Milwaukee (MKE) 08:10 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2026-02-08 through 2026-02-11
Tue,Wed 05:00 Milwaukee (MKE) 08:10 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2026-02-18 through 2026-03-04
Mon,Thu,Fri 06:00 Milwaukee (MKE) 09:10 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 06:00 Milwaukee (MKE) 09:10 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2026-02-20 through 2026-03-01
Sat 06:05 Milwaukee (MKE) 09:15 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737-700 (Scimitar Winglets) 4:10 Effective 2026-01-10 through 2026-02-07
Thu,Fri,Sun 06:10 Milwaukee (MKE) 09:25 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-01-11 through 2026-01-16
Mon,Sun 06:10 Milwaukee (MKE) 09:25 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 06:10 Milwaukee (MKE) 09:25 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-02-01 through 2026-02-06
Mon,Sun 06:10 Milwaukee (MKE) 09:25 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 06:10 Milwaukee (MKE) 09:25 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-02-17 through 2026-02-23
Mon 06:10 Milwaukee (MKE) 09:25 Phoenix Sky Harbor (PHX) 4 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Operates only on 2026-03-02
Mon,Thu,Fri 09:50 Phoenix Sky Harbor (PHX) 4 11:05 Oakland (OAK) 2 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 09:50 Phoenix Sky Harbor (PHX) 4 11:05 Oakland (OAK) 2 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-02-20 through 2026-03-01
Thu,Fri,Sun 10:05 Phoenix Sky Harbor (PHX) 4 11:20 Oakland (OAK) 2 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-01-11 through 2026-01-16
Mon,Sun 10:05 Phoenix Sky Harbor (PHX) 4 11:20 Oakland (OAK) 2 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 10:05 Phoenix Sky Harbor (PHX) 4 11:20 Oakland (OAK) 2 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-02-01 through 2026-02-06
Mon,Sun 10:05 Phoenix Sky Harbor (PHX) 4 11:20 Oakland (OAK) 2 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 10:05 Phoenix Sky Harbor (PHX) 4 11:20 Oakland (OAK) 2 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-02-17 through 2026-02-23
Mon 10:05 Phoenix Sky Harbor (PHX) 4 11:20 Oakland (OAK) 2 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Operates only on 2026-03-02
Sat 10:35 Phoenix Sky Harbor (PHX) 4 11:45 Oakland (OAK) 2 WN 4978 Non-stop Boeing 737-700 (Scimitar Winglets) 2:10 Effective 2026-02-14 through 2026-02-28
Tue,Wed 12:10 Oakland (OAK) 2 13:35 Los Angeles (LAX) 1 WN 4978 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-06-09 through 2026-07-29
Sat 12:20 Phoenix Sky Harbor (PHX) 4 17:35 Chicago Midway (MDW) WN 4978 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-08-08 through 2026-09-26
Mon,Thu,Fri 13:15 Oakland (OAK) 2 14:40 Los Angeles (LAX) 1 WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-06-04 through 2026-08-03
Tue,Wed 15:50 Phoenix Sky Harbor (PHX) 4 21:05 Chicago Midway (MDW) WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-08-04 through 2026-09-30
Sun 16:20 Phoenix Sky Harbor (PHX) 4 21:40 Chicago Midway (MDW) WN 4978 Non-stop Boeing 737-700 (Scimitar Winglets) 3:20 Effective 2026-08-09 through 2026-09-27
Sat 21:40 San Diego (SAN) 1 06:30 Baltimore (BWI) WN 4978 Non-stop Boeing 737 MAX 8 (7M8) 4:50 Operates only on 2026-03-07 The flight arrives 1 day after departure.
Non-Direct Flights:
Mon,Thu,Fri 06:00 Milwaukee (MKE) 11:05 Oakland (OAK) 2 WN 4978 1-stop Boeing 737 MAX 8 (7M8) 7:05 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 06:00 Milwaukee (MKE) 11:05 Oakland (OAK) 2 WN 4978 1-stop Boeing 737 MAX 8 (7M8) 7:05 Effective 2026-02-20 through 2026-03-01
Thu,Fri,Sun 06:10 Milwaukee (MKE) 11:20 Oakland (OAK) 2 WN 4978 1-stop Boeing 737 MAX 8 (7M8) 7:10 Effective 2026-01-11 through 2026-01-16
Mon,Sun 06:10 Milwaukee (MKE) 11:20 Oakland (OAK) 2 WN 4978 1-stop Boeing 737 MAX 8 (7M8) 7:10 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 06:10 Milwaukee (MKE) 11:20 Oakland (OAK) 2 WN 4978 1-stop Boeing 737 MAX 8 (7M8) 7:10 Effective 2026-02-01 through 2026-02-06
Mon,Sun 06:10 Milwaukee (MKE) 11:20 Oakland (OAK) 2 WN 4978 1-stop Boeing 737 MAX 8 (7M8) 7:10 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 06:10 Milwaukee (MKE) 11:20 Oakland (OAK) 2 WN 4978 1-stop Boeing 737 MAX 8 (7M8) 7:10 Effective 2026-02-17 through 2026-02-23
Mon 06:10 Milwaukee (MKE) 11:20 Oakland (OAK) 2 WN 4978 1-stop Boeing 737 MAX 8 (7M8) 7:10 Operates only on 2026-03-02

This flight number is listed as serving the following routes:

Milwaukee (MKE) - Oakland (OAK)
Milwaukee (MKE) - Phoenix Sky Harbor (PHX)
Oakland (OAK) - Los Angeles (LAX)
Phoenix Sky Harbor (PHX) - Chicago Midway (MDW)
Phoenix Sky Harbor (PHX) - Oakland (OAK)
San Diego (SAN) - Baltimore (BWI)

All Southwest Airlines flights

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Southwest Airlines flight WN 4978: Multiple routes

FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4978

05:00

Milwaukee (MKE)

08:10

Phoenix Sky Harbor (PHX) 4

Effective 2026-01-06 through 2026-01-14

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

05:00

Milwaukee (MKE)

08:10

Phoenix Sky Harbor (PHX) 4

Effective 2026-01-18 through 2026-01-23

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

05:00

Milwaukee (MKE)

08:10

Phoenix Sky Harbor (PHX) 4

Effective 2026-01-26 through 2026-02-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

05:00

Milwaukee (MKE)

08:10

Phoenix Sky Harbor (PHX) 4

Effective 2026-02-08 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

05:00

Milwaukee (MKE)

08:10

Phoenix Sky Harbor (PHX) 4

Effective 2026-02-18 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

06:00

Milwaukee (MKE)

09:10

Phoenix Sky Harbor (PHX) 4

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

06:00

Milwaukee (MKE)

09:10

Phoenix Sky Harbor (PHX) 4

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

06:05

Milwaukee (MKE)

09:15

Phoenix Sky Harbor (PHX) 4

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

09:25

Phoenix Sky Harbor (PHX) 4

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

09:25

Phoenix Sky Harbor (PHX) 4

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

09:25

Phoenix Sky Harbor (PHX) 4

Effective 2026-02-01 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

09:25

Phoenix Sky Harbor (PHX) 4

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

09:25

Phoenix Sky Harbor (PHX) 4

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

09:25

Phoenix Sky Harbor (PHX) 4

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

09:50

Phoenix Sky Harbor (PHX) 4

11:05

Oakland (OAK) 2

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

09:50

Phoenix Sky Harbor (PHX) 4

11:05

Oakland (OAK) 2

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

10:05

Phoenix Sky Harbor (PHX) 4

11:20

Oakland (OAK) 2

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

10:05

Phoenix Sky Harbor (PHX) 4

11:20

Oakland (OAK) 2

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

10:05

Phoenix Sky Harbor (PHX) 4

11:20

Oakland (OAK) 2

Effective 2026-02-01 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

10:05

Phoenix Sky Harbor (PHX) 4

11:20

Oakland (OAK) 2

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

10:05

Phoenix Sky Harbor (PHX) 4

11:20

Oakland (OAK) 2

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

10:05

Phoenix Sky Harbor (PHX) 4

11:20

Oakland (OAK) 2

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

10:35

Phoenix Sky Harbor (PHX) 4

11:45

Oakland (OAK) 2

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4978

12:10

Oakland (OAK) 2

13:35

Los Angeles (LAX) 1

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4978

12:20

Phoenix Sky Harbor (PHX) 4

17:35

Chicago Midway (MDW)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4978

13:15

Oakland (OAK) 2

14:40

Los Angeles (LAX) 1

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

15:50

Phoenix Sky Harbor (PHX) 4

21:05

Chicago Midway (MDW)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4978

16:20

Phoenix Sky Harbor (PHX) 4

21:40

Chicago Midway (MDW)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4978

21:40

San Diego (SAN) 1

06:30(+1)

Baltimore (BWI)

Operates only on 2026-03-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:50, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Non-Direct Flights:

Southwest Airlines WN4978

06:00

Milwaukee (MKE)

11:05

Oakland (OAK) 2

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 7:05, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4978

06:00

Milwaukee (MKE)

11:05

Oakland (OAK) 2

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 7:05, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

11:20

Oakland (OAK) 2

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 7:10, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

11:20

Oakland (OAK) 2

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 7:10, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

11:20

Oakland (OAK) 2

Effective 2026-02-01 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 7:10, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

11:20

Oakland (OAK) 2

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 7:10, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

11:20

Oakland (OAK) 2

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 7:10, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4978

06:10

Milwaukee (MKE)

11:20

Oakland (OAK) 2

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:10, 1-stop
Boeing 737 MAX 8 (7M8)

This flight number is listed as serving the following routes:

Milwaukee (MKE) - Oakland (OAK)
Milwaukee (MKE) - Phoenix Sky Harbor (PHX)
Oakland (OAK) - Los Angeles (LAX)
Phoenix Sky Harbor (PHX) - Chicago Midway (MDW)
Phoenix Sky Harbor (PHX) - Oakland (OAK)
San Diego (SAN) - Baltimore (BWI)

All Southwest Airlines flights

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