Latest Flight Deals from Islip to St. Louis
Book one-way or return flights from Islip to St. Louis from as little as CAD 259. Choose from the popular airlines below and book your flight today!
- One way
- Round-trip
- ISP11:3420h 28m2 stopsSTL07:02Thu, May 23|Islip - St. Louis|Frontier AirlinesCAD 259CAD 92972% OFF72% OFFCAD 929CAD 259
- ISP17:2517h 12m2 stopsSTL09:37Fri, May 24|Islip - St. Louis|Frontier AirlinesCAD 486CAD 92948% OFF48% OFFCAD 929CAD 486
- ISP13:0521h 17m2 stopsSTL09:22Sun, Jul 28|Islip - St. Louis|Breeze AirwaysCAD 864CAD 9297% OFF7% OFFCAD 929CAD 864
- ISP13:003h 5mDirectSTL14:00Tue, May 21|Islip - St. Louis|Frontier AirlinesFind More FlightsFind More Flights
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Find more flights and airlines
Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Islip to St. Louis.
- CheapestISP11:3420h 28m2 transferSTL07:02Long Island Macarthur Airport - St. Louis Lambert International AirportThu, May 23Frontier AirlinesCAD 259
- ISP11:3420h 28m2 transferSTL07:02Long Island Macarthur Airport - St. Louis Lambert International AirportThu, May 23Frontier AirlinesCAD 259Find More Flights
How do I find the cheapest flights?
How to find a cheap flight from Islip to St. Louis
Cheapest month | March |
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Peak season for travel | July |
Flight distance | 1,478.87km |
Popular airline | Frontier Airlines |
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