Flights from Islip Airport (ISP) to St. Louis Lambert Airport Airport (STL)

Direct flights to Lambert-St. Louis International from Long Island Mac Arthur are only offered by Sun Country Airlines as this route is in low demand, so the options are limited. If this route is not ideal, the only other option is to get a flight with a stop over. The official airport code for Long Island Mac Arthur is ISP and for Lambert-St. Louis International it is STL.

The cost of the flights varies significantly so we can’t provide you an estimate. Prices can be 50% cheaper if you book more than a month in advance. If you know the dates you wish to travel then book you flights as soon as you can. The earlier you book your lights the cheaper they will be. You can get saving of up to 50% of you book 2 or 3 months in advance! Flight to Lambert-St. Louis International will get more expensive the nearer you get the departure date, so it’s advisable to book in advance if it is possible.

On arriving at Lambert-St. Louis International please note the time difference, the time zone at Lambert-St. Louis International is 6.0 GMT compared to 5.0 GMT at Long Island Mac Arthur.