Menu

Cheap flights from St Louis to Islip (STL - ISP)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

$830
$660
$480
$298
Price
$298 - $750
Temperature
43 - 84 °F
Rainfall
2 - 4 inches
Most popular in July High demand for flights, 17% potential price rise
Cheapest in August Best time to find cheap flights, 17% potential price drop
Average price $499 Price for this month
Cheapest price $298 From St Louis to Islip

Cheap flights from St Louis to Islip in February 2020

The best prices found for STL to ISP flights for February
27 Feb - 28 Feb
$243pp
STL
Lambert-St Louis
Major Airline
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
Major Airline
 
1 STOP
STL
Lambert-St Louis
21 Feb - 24 Feb
$259pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
 
1 STOP
STL
Lambert-St Louis
14 Feb - 17 Feb
$364pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
 
1 STOP
STL
Lambert-St Louis

St Louis to Islip 2020 flight deals

Cheap flights to Islip from St Louis found for this year
28 Feb - 2 Mar
$253pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
 
1 STOP
STL
Lambert-St Louis
24 Apr - 27 Apr
$265pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
 
1 STOP
STL
Lambert-St Louis
3 Jun - 6 Jun
$294pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
   
2 STOPS
STL
Lambert-St Louis

Last minute flights from St Louis to Islip

Late deals on round-trip flights to Islip from St Louis, departing today and this week
1 Feb - 8 Feb
$320pp
STL
Lambert-St Louis
Frontier
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
Frontier
 
1 STOP
STL
Lambert-St Louis
4 Feb - 6 Feb
$375pp
STL
Lambert-St Louis
Frontier
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
Frontier
 
1 STOP
STL
Lambert-St Louis
28 Jan - 31 Jan
$435pp
STL
Lambert-St Louis
Frontier
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
Frontier
 
1 STOP
STL
Lambert-St Louis

Alternative routes for St Louis to Islip

Destination information for Islip

Things to know before you go. Useful info for your trip from St Louis to Islip
Average temperature for January in Islip
42.8 °F
Avg rainfall for January in Islip
3.3 ″

Airports servicing St. Louis

Airports servicing Islip

Related info for your journey

Useful info, stats and facts about St Louis to Islip flights.

Flight FAQs

From St Louis to Islip

How popular is this flight route?

The Lambert-St Louis to Islip Long Island flight path was viewed by 26 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What percent of flights are delayed?

Based on our current data flights from St Louis to Islip are usually on time.

How many passenger seats are available on a flight on this route?

Expect 110,166,615 seats to be available on average per day for flights from Lambert-St Louis to Islip Long Island.

What is the cheapest airline for this route?

When searching, try setting your filters to view flights for Southwest Airlines Co., as currently they have the cheapest options available from St Louis to Islip. On average you can find 133 flights for this flight path daily.

Does it rain more in St Louis or Islip?

St Louis will have less rainfall in 2 compared to Islip over the next 15 days.

Is St Louis weather warmer or cooler than Islip?

With an average temperature of 90 °F, peak weather can be found in July. As a traveler, expect to see changes in flight prices during that period. The temperatures in Islip are colder than in St Louis.