Which airline flies the most flights to ISP? The top airline carrier flying out of MacArthur is Southwest Airlines and they fly over 365 flights every month.
- Frontier Airlines - Long Island (ISP) to Chicago (ORD) on 5/1 leaving at 5:25 am and returning on 5/4 at 6:57 pm for only $95 per person.*
- American Airlines - Long Island (ISP) to San Francisco (SFO) on 5/1 leaving at 10:20 am and returning on 5/4 at 7:13 pm for only $352 per person.*
- American Airlines - Long Island (ISP) to Los Angeles (LAX) on 4/24 leaving at 3:01 am and returning on 4/26 at 2:43 pm for only $420 per person.*
*Prices vary and will be updated when you view current flight availability results. Deals displayed here are based on flight pricing and availability as of 04/21/2018 and may change as you get closer to the actual flight date. Deals displayed whose dates are in the past are no longer valid.