When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 58 days in advance, which can save you up to 107% on flights from St. Louis to Islip, New York compared to booking the week you need them. Waiting 58 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $442. For sooner than that we have options available in the next 3 days from $497.
Due to multiple factors, expect to potentially pay more when booking in November. For low rates, September can be a great choice for travel to Islip, New York. Flights to Islip, New York from St. Louis in September are about $308 on average during September, but can be found for as low as $133.
When flying from St. Louis to Islip, New York, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Fly from
Fly to
Budget
$147 - $338
Route
Depart
Return
Price
Lambert-St LouisIslip Long Island
STL - ISP
STLISP
Lambert-St Louis
Mon 9/16
1 stop25h 39m
Islip Long Island
Thu 9/19
1 stop19h 04m
Lambert-St LouisIslip Long Island
STL - ISP
STLISP
Lambert-St Louis
Fri 9/6
1 stop23h 47m
Islip Long Island
Sun 9/8
1 stop23h 38m
Lambert-St LouisIslip Long Island
STL - ISP
STLISP
Lambert-St Louis
Fri 10/4
1 stop23h 47m
Islip Long Island
Sun 10/6
1 stop23h 38m
Food
Overall
Crew
Entertainment
Boarding
Comfort
Reviews
Fine. The flight is cheap but paying $4 for a juice for a baby is out of control. Do better.
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$127 | Average$156 | FlexibilityNo cancel fee | On-time62% |