Southwest Airlines flights from Greenville/Spartanburg (GSP) to Islip (ISP).

FLIGHT SCHEDULE
Non-Direct Flights:
Mon,Thu,Fri 13:55 Greenville/Spartanburg (GSP) 17:15 Islip (ISP) Southwest Airlines WN 4126 1-stop Boeing 737-700 (Scimitar Winglets) 3:20 Effective 2026-06-04 through 2026-08-03

A domestic route departing from the Greenville/Spartanburg airport (GSP) and arriving at Islip airport (ISP).
The flight distance is 641 miles, or 1032 km.
The timezone of both the departure and the arrival airports is UTC-5 . Current time at both airports is (loading...).

FLIGHT SCHEDULE

Non-Direct Flights:

Southwest Airlines WN4126

13:55

17:15

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:20, 1-stop
Boeing 737-700 (Scimitar Winglets)

A domestic route departing from the Greenville/Spartanburg airport (GSP) and arriving at Islip airport (ISP).
The flight distance is 641 miles, or 1032 km.
The timezone of both the departure and the arrival airports is UTC-5 . Current time at both airports is (loading...).

Feedback - Disclaimer - Privacy