When did momondo last update prices for flights from Islip Long Island Airport to Missouri?

Prices for flights from Islip Long Island Airport to Missouri were last updated today.

How many operators does momondo search for flights from Islip Long Island Airport to Missouri?

As of August 2026, there is 1 operator available to choose from for flights from Islip Long Island Airport to Missouri.

How old do you have to be to fly from Islip Long Island Airport to Missouri?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Missouri.

What documentation or ID do you need to fly to Missouri?

The travel and health documents required for your trip to Missouri can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Missouri. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$117 Cheap Flights from Islip, New York to Missouri in 2026

Find the cheapest flights from Islip, New York to Missouri

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:20 pm - 10:15 pmISP Islip Long Island-STL Lambert-St Louis

6h 55m1 stop Orlando

6:25 am - 12:05 pmSTL Lambert-St Louis-ISP Islip Long Island

4h 40m1 stop Baltimore/Washington

$214Southwest

Wed, Oct 14 - Sat, Nov 14

6:05 am - 12:50 pmISP Islip Long Island-STL Lambert-St Louis

7h 45m2 stops Baltimore/Washington Tampa

6:25 am - 12:05 pmSTL Lambert-St Louis-ISP Islip Long Island

4h 40m1 stop Baltimore/Washington

$219Southwest

Wed, Oct 14 - Sat, Nov 14

12:35 pm - 9:45 pmISP Islip Long Island-STL Lambert-St Louis

10h 10m1 stop Baltimore/Washington

6:45 am - 12:05 pmSTL Lambert-St Louis-ISP Islip Long Island

4h 20m1 stop Baltimore/Washington

$220Southwest

Thu, Sep 24 - Sat, Sep 26

6:10 am - 11:35 amISP Islip Long Island-STL Lambert-St Louis

6h 25m1 stop Baltimore/Washington

2:25 pm - 9:35 pmSTL Lambert-St Louis-ISP Islip Long Island

6h 10m1 stop Orlando

$223Southwest

Thu, Sep 10 - Thu, Sep 17

6:05 am - 12:50 pmISP Islip Long Island-STL Lambert-St Louis

7h 45m2 stops Baltimore/Washington Tampa

5:45 am - 2:55 pmSTL Lambert-St Louis-ISP Islip Long Island

8h 10m2 stops Chicago Midway Baltimore/Washington

$234Southwest

Wed, Oct 14 - Sat, Nov 14

4:05 pm - 10:10 pmISP Islip Long Island-STL Lambert-St Louis

7h 05m2 stops Baltimore/Washington Nashville Intl

2:25 pm - 9:35 pmSTL Lambert-St Louis-ISP Islip Long Island

6h 10m1 stop Orlando

$239Southwest

Thu, Sep 10 - Thu, Sep 17

5:43 pm - 4:34 pmISP Islip Long Island-STL Lambert-St Louis

23h 51m1 stop Orlando

5:19 pm - 4:58 pmSTL Lambert-St Louis-ISP Islip Long Island

22h 39m1 stop Orlando

$249Frontier

Thu, Sep 10 - Sun, Sep 13

6:05 am - 10:05 amISP Islip Long Island-STL Lambert-St Louis

5h 00m1 stop Baltimore/Washington

3:20 pm - 10:35 pmSTL Lambert-St Louis-ISP Islip Long Island

6h 15m1 stop Baltimore/Washington

$255Southwest

Tue, Sep 29 - Tue, Oct 6

5:43 pm - 4:34 pmISP Islip Long Island-STL Lambert-St Louis

23h 51m1 stop Orlando

5:19 pm - 4:58 pmSTL Lambert-St Louis-ISP Islip Long Island

22h 39m1 stop Orlando

$257Frontier

Thu, Sep 24 - Sun, Sep 27

3:20 pm - 9:15 pmISP Islip Long Island-STL Lambert-St Louis

6h 55m1 stop Baltimore/Washington

2:25 pm - 10:35 pmSTL Lambert-St Louis-ISP Islip Long Island

7h 10m2 stops Chicago Midway Baltimore/Washington

$260Southwest

Tue, Sep 29 - Tue, Oct 6

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Frontier flights from Islip, New York to Missouri

Our best Frontier deals on Islip, New York to Missouri flight tickets

Frontier

Sep 10

ISP5:43 pmIslip Long Island

23h 51m

1 stop

STL4:34 pmLambert-St Louis

Sep 13

STL5:19 pmLambert-St Louis

22h 39m

1 stop

ISP4:58 pmIslip Long Island

$249

Frontier

Sep 24

ISP5:43 pmIslip Long Island

23h 51m

1 stop

STL4:34 pmLambert-St Louis

Sep 27

STL5:19 pmLambert-St Louis

22h 39m

1 stop

ISP4:58 pmIslip Long Island

$257

Frontier

Aug 28

ISP7:09 pmIslip Long Island

22h 02m

1 stop

STL4:11 pmLambert-St Louis

Aug 30

STL5:02 pmLambert-St Louis

15h 51m

1 stop

ISP9:53 amIslip Long Island

$306

Southwest flights from Islip, New York to Missouri

Our best Southwest deals on Islip, New York to Missouri flight tickets

Southwest

Oct 14

ISP4:20 pmIslip Long Island

6h 55m

1 stop

STL10:15 pmLambert-St Louis

Nov 14

STL6:25 amLambert-St Louis

4h 40m

1 stop

ISP12:05 pmIslip Long Island

$214

Southwest

Oct 14

ISP6:05 amIslip Long Island

7h 45m

2 stops

STL12:50 pmLambert-St Louis

Nov 14

STL6:25 amLambert-St Louis

4h 40m

1 stop

ISP12:05 pmIslip Long Island

$219

Southwest

Sep 24

ISP12:35 pmIslip Long Island

10h 10m

1 stop

STL9:45 pmLambert-St Louis

Sep 26

STL6:45 amLambert-St Louis

4h 20m

1 stop

ISP12:05 pmIslip Long Island

$220

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Wed 10/14

4:20 pm-10:15 pm

1 stop6h 55m

Lambert-St Louis

Sat 11/14

6:25 am-12:05 pm

1 stop4h 40m

$214

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Wed 10/14

6:05 am-12:50 pm

2 stops7h 45m

Lambert-St Louis

Sat 11/14

6:25 am-12:05 pm

1 stop4h 40m

$219

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Thu 9/24

12:35 pm-9:45 pm

1 stop10h 10m

Lambert-St Louis

Sat 9/26

6:45 am-12:05 pm

1 stop4h 20m

$220

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Thu 9/10

6:10 am-11:35 am

1 stop6h 25m

Lambert-St Louis

Thu 9/17

2:25 pm-9:35 pm

1 stop6h 10m

$223

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Wed 10/14

6:05 am-12:50 pm

2 stops7h 45m

Lambert-St Louis

Sat 11/14

5:45 am-2:55 pm

2 stops8h 10m

$234

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Thu 9/10

4:05 pm-10:10 pm

2 stops7h 05m

Lambert-St Louis

Thu 9/17

2:25 pm-9:35 pm

1 stop6h 10m

$239

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Thu 9/10

5:43 pm-4:34 pm

1 stop23h 51m

Lambert-St Louis

Sun 9/13

5:19 pm-4:58 pm

1 stop22h 39m

$249

Quickest round-trip

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Tue 9/29

6:05 am-10:05 am

1 stop5h 00m

Lambert-St Louis

Tue 10/6

3:20 pm-10:35 pm

1 stop6h 15m

$255

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Thu 9/24

5:43 pm-4:34 pm

1 stop23h 51m

Lambert-St Louis

Sun 9/27

5:19 pm-4:58 pm

1 stop22h 39m

$257

IslipSt. Louis

ISP Islip Long Island - STL Lambert-St Louis

ISPSTL

Islip Long Island

Tue 9/29

3:20 pm-9:15 pm

1 stop6h 55m

Lambert-St Louis

Tue 10/6

2:25 pm-10:35 pm

2 stops7h 10m

$260

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to Missouri

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Islip Long Island to Missouri?

Frontier and Southwest are the most popular carriers operating from Islip Long Island to Missouri

What airlines fly to Missouri?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to Missouri from Islip, New York according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Missouri. Keep in mind that there are 5 different airlines that fly to Missouri on a routine basis, so you have a few additional options to choose from.

Cheap Islip, New York to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Missouri

Fastest flight time	4h 45m
Direct flights	None

The fastest flight from Islip, New York to Missouri takes 4h 45m

There are no direct flights from Islip, New York to Missouri. There are no popular flight routes from Islip, New York to Missouri.

Search flight deals

Frequently asked questions about flying from Islip, New York to Missouri

When did momondo last update prices for flights from Islip Long Island Airport to Missouri?
Prices for flights from Islip Long Island Airport to Missouri were last updated today.
How many operators does momondo search for flights from Islip Long Island Airport to Missouri?
As of August 2026, there is 1 operator available to choose from for flights from Islip Long Island Airport to Missouri.
How old do you have to be to fly from Islip Long Island Airport to Missouri?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Missouri.
What documentation or ID do you need to fly to Missouri?
The travel and health documents required for your trip to Missouri can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Missouri. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Islip, New York to Missouri

Compare and see reviews for airlines that fly from Islip, New York to Missouri with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $246	Free Cancellation	Rating 8.0 4,219 reviews		Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Missouri?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Islip to Missouri. momondo saves you time and could save you money on your trip.

Can I find flights from Islip to Missouri with flexible booking policies on momondo?

Yes. All flights to Missouri from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Islip to Missouri?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Islip to Missouri.

I’m not ready to book a flight from Islip to Missouri right now. Can momondo alert me if prices change?

Price alerts on flights to Missouri from Islip are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.