To save up to 92% on this flight, we recommend booking at least 47 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Islip, New York to St. Louis from $381 1-2 weeks out and tickets from $497 for flights departing within the next 72 hours.
Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to St. Louis. Flights to St. Louis from Islip, New York in February are about $318 on average during February, but can be found for as low as $114.
Unlike in the morning, when flights are generally more expensive, you can save up to 56% on flights from Islip, New York to St. Louis by exploring options for tickets at noon.
Fly from
Fly to
Budget
$195 - $423
Route
Depart
Return
Price
Islip Long IslandLambert-St Louis
ISP - STL
ISPSTL
Islip Long Island
Thu 5/16
1 stop9h 44m
Lambert-St Louis
Tue 5/28
1 stop11h 29m
Islip Long IslandLambert-St Louis
ISP - STL
ISPSTL
Islip Long Island
Mon 5/20
1 stop15h 19m
Lambert-St Louis
Thu 5/23
1 stop11h 29m
Islip Long IslandLambert-St Louis
ISP - STL
ISPSTL
Islip Long Island
Fri 5/17
1 stop24h 36m
Lambert-St Louis
Tue 5/21
1 stop11h 29m
Islip Long IslandLambert-St Louis
ISP - STL
ISPSTL
Islip Long Island
Thu 7/11
1 stop9h 40m
Lambert-St Louis
Sun 7/14
1 stop12h 44m
Islip Long IslandLambert-St Louis
ISP - STL
ISPSTL
Islip Long Island
Thu 7/18
1 stop9h 40m
Lambert-St Louis
Sun 7/21
1 stop12h 44m
No data available for this route at this time. Please check back soon.
Food
Crew
Overall
Comfort
Boarding
Entertainment
Reviews
Our flight was delayed causing us to miss our connecting flight. The staff was not helpful in helping us find alternatives. We cancelled our flight and had to book our way home using another airline.
Food
Crew
Overall
Comfort
Boarding
Entertainment
Reviews
Our flight was delayed causing us to miss our connecting flight. The staff was not helpful in helping us find alternatives. We cancelled our flight and had to book our way home using another airline.
Sunday | 1daily flight |
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Monday | 0daily flights |
Tuesday | 0daily flights |
Wednesday | 0daily flights |
Thursday | 0daily flights |
Friday | 0daily flights |
Saturday | 0daily flights |
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