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
$205 - $419
Route
Depart
Return
Price
Islip Long IslandLambert-St Louis
ISP - STL
ISPSTL
Islip Long Island
Thu 5/9
1 stop10h 23m
Lambert-St Louis
Sun 5/12
1 stop11h 38m
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.
Entertainment
Overall
Food
Boarding
Comfort
Crew
Reviews
Horrific. Boarding sucked and was not ADA friendly Our flight was delayed 2 times. One of the delays was because a flight attendant was late to work. I booked a window seat- and my seat didn’t even come with a window. The crew members were in the back talking about how poorly they were treated at their job, and that most of them were staying because they had to, and couldn’t afford a career change. Overall one of the worst flights I’ve ever had, I feel bad for the employees and will never book with frontier again- not because of my poor experience- I don’t want to contribute funds to an organization that treats their workers unfairly.
Entertainment
Overall
Food
Boarding
Comfort
Crew
Reviews
Horrific. Boarding sucked and was not ADA friendly Our flight was delayed 2 times. One of the delays was because a flight attendant was late to work. I booked a window seat- and my seat didn’t even come with a window. The crew members were in the back talking about how poorly they were treated at their job, and that most of them were staying because they had to, and couldn’t afford a career change. Overall one of the worst flights I’ve ever had, I feel bad for the employees and will never book with frontier again- not because of my poor experience- I don’t want to contribute funds to an organization that treats their workers unfairly.
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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