Southwest Airlines flight WN 355: Denver - Guanacaste

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 07:40 Denver (DEN) 12:30 Guanacaste (LIR)
WN 355 Non-stop Boeing 737 MAX 8 (7M8) 4:50 Operates only on 2026-04-11
Sat 08:05 Denver (DEN) 14:15 Guanacaste (LIR)
WN 355 Non-stop Boeing 737 MAX 8 (7M8) 5:10 Operates only on 2026-01-03
Sat 08:20 Denver (DEN) 13:15 Guanacaste (LIR)
WN 355 Non-stop Boeing 737 MAX 8 (7M8) 4:55 Effective 2026-04-18 through 2026-05-30
Sat 08:30 Denver (DEN) 13:30 Guanacaste (LIR)
WN 355 Non-stop Boeing 737 MAX 8 (7M8) 5:00 Effective 2026-06-06 through 2026-08-01
Sat 08:40 Denver (DEN) 14:55 Guanacaste (LIR)
WN 355 Non-stop Boeing 737 MAX 8 (7M8) 5:15 Effective 2026-01-10 through 2026-01-31
Sat 08:45 Denver (DEN) 15:00 Guanacaste (LIR)
WN 355 Non-stop Boeing 737 MAX 8 (7M8) 5:15 Effective 2026-02-07 through 2026-02-28
Sat 09:10 Denver (DEN) 15:10 Guanacaste (LIR)
WN 355 Non-stop Boeing 737 MAX 8 (7M8) 5:00 Operates only on 2026-03-07
Sat,Sun 09:10 Denver (DEN) 14:10 Guanacaste (LIR)
WN 355 Non-stop Boeing 737 MAX 8 (7M8) 5:00 Effective 2026-03-08 through 2026-04-05


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Southwest Airlines flight WN 355:
Denver - Guanacaste
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN355
07:40
Denver (DEN)

12:30
Guanacaste (LIR)
Operates only on 2026-04-11
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:50, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN355
08:05
Denver (DEN)

14:15
Guanacaste (LIR)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN355
08:20
Denver (DEN)

13:15
Guanacaste (LIR)
Effective 2026-04-18 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:55, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN355
08:30
Denver (DEN)

13:30
Guanacaste (LIR)
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN355
08:40
Denver (DEN)

14:55
Guanacaste (LIR)
Effective 2026-01-10 through 2026-01-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN355
08:45
Denver (DEN)

15:00
Guanacaste (LIR)
Effective 2026-02-07 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN355
09:10
Denver (DEN)

15:10
Guanacaste (LIR)
Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN355
09:10
Denver (DEN)

14:10
Guanacaste (LIR)
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 5:00, non-stop
Boeing 737 MAX 8 (7M8)
  • WN 355 is an international flight departing from Denver airport, United States (DEN) and arriving at Guanacaste airport, Costa Rica (LIR).
  • The flight distance is 2336 miles, or 3759 km.
  • The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-6 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 4:50 and 5:15.
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