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 2025, 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.

$119 Cheap Flights from Islip to Missouri in 2025

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Find the cheapest flights from Islip, New York to Missouri

Round-trip

One-way

Last minute

Cheap round-trip flights

11:40 am - 1:02 pmISP-STL

26h 22m1 stop

1:57 pm - 10:40 amSTL-ISP

19h 43m1 stop

$245Frontier

Find Deal

Thu, Oct 2 - Sun, Oct 5

5:30 am - 10:55 amISP-STL

6h 25m2 stops

5:10 pm - 11:50 pmSTL-ISP

5h 40m1 stop

$342Southwest

Find Deal

Thu, Oct 2 - Sun, Oct 5

12:55 pm - 9:00 pmISP-STL

9h 05m1 stop

8:10 am - 5:00 pmSTL-ISP

7h 50m1 stop

$351Southwest

Find Deal

Sat, Aug 16 - Sun, Aug 17

5:40 am - 11:30 amISP-STL

6h 50m2 stops

8:10 am - 5:00 pmSTL-ISP

7h 50m1 stop

$356Southwest

Find Deal

Sat, Aug 16 - Sun, Aug 17

11:35 am - 8:35 pmISP-STL

10h 00m2 stops

8:55 am - 5:55 pmSTL-ISP

8h 00m2 stops

$387Southwest

Find Deal

Thu, Oct 2 - Sun, Oct 5

5:40 am - 11:30 amISP-STL

6h 50m2 stops

5:35 am - 5:00 pmSTL-ISP

10h 25m2 stops

$495Southwest

Find Deal

Sat, Aug 16 - Sun, Aug 17

11:53 am - 10:53 pmISP-MCI

12h 00m2 stops

6:00 am - 8:01 pmMCI-ISP

13h 01m2 stops

$838

Find Deal

Fri, Aug 15 - Tue, Aug 19

Frontier flights from Islip, New York to Missouri

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

Frontier

Oct 2

ISP11:40 amIslip Long Island

26h 22m

1 stop

STL1:02 pmLambert-St Louis

Oct 5

STL1:57 pmLambert-St Louis

19h 43m

1 stop

ISP10:40 amIslip Long Island

$245

Find similar

Frontier

Aug 8

ISP8:37 pmIslip Long Island

28h 10m

1 stop

STL11:47 pmLambert-St Louis

Aug 12

STL5:40 pmLambert-St Louis

25h 12m

1 stop

ISP7:52 pmIslip Long Island

$373

Find similar

Frontier

Aug 8

ISP8:37 pmIslip Long Island

28h 10m

1 stop

STL11:47 pmLambert-St Louis

Aug 11

STL5:40 pmLambert-St Louis

27h 18m

1 stop

ISP9:58 pmIslip Long Island

$377

Find similar

Southwest flights from Islip, New York to Missouri

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

Southwest

Oct 2

ISP5:30 amIslip Long Island

6h 25m

2 stops

STL10:55 amLambert-St Louis

Oct 5

STL5:10 pmLambert-St Louis

5h 40m

1 stop

ISP11:50 pmIslip Long Island

$342

Find similar

Southwest

Aug 16

ISP12:55 pmIslip Long Island

9h 05m

1 stop

STL9:00 pmLambert-St Louis

Aug 17

STL8:10 amLambert-St Louis

7h 50m

1 stop

ISP5:00 pmIslip Long Island

$351

Find similar

Southwest

Aug 16

ISP5:40 amIslip Long Island

6h 50m

2 stops

STL11:30 amLambert-St Louis

Aug 17

STL8:10 amLambert-St Louis

7h 50m

1 stop

ISP5:00 pmIslip Long Island

$356

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IslipSt. Louis

ISP - STL

ISPSTL

Islip Long Island

Thu 10/2

11:40 am-1:02 pm

1 stop26h 22m

Lambert-St Louis

Sun 10/5

1:57 pm-10:40 am

1 stop19h 43m

$245

IslipSt. Louis

ISP - STL

ISPSTL

Islip Long Island

Thu 10/2

5:30 am-10:55 am

2 stops6h 25m

Lambert-St Louis

Sun 10/5

5:10 pm-11:50 pm

1 stop5h 40m

$342

IslipSt. Louis

ISP - STL

ISPSTL

Islip Long Island

Sat 8/16

12:55 pm-9:00 pm

1 stop9h 05m

Lambert-St Louis

Sun 8/17

8:10 am-5:00 pm

1 stop7h 50m

$351

IslipSt. Louis

ISP - STL

ISPSTL

Islip Long Island

Sat 8/16

5:40 am-11:30 am

2 stops6h 50m

Lambert-St Louis

Sun 8/17

8:10 am-5:00 pm

1 stop7h 50m

$356

IslipSt. Louis

ISP - STL

ISPSTL

Islip Long Island

Thu 10/2

11:35 am-8:35 pm

2 stops10h 00m

Lambert-St Louis

Sun 10/5

8:55 am-5:55 pm

2 stops8h 00m

$387

IslipSt. Louis

ISP - STL

ISPSTL

Islip Long Island

Sat 8/16

5:40 am-11:30 am

2 stops6h 50m

Lambert-St Louis

Sun 8/17

5:35 am-5:00 pm

2 stops10h 25m

$495

IslipKansas City

ISP - MCI

ISPMCI

Islip Long Island

Fri 8/15

11:53 am-10:53 pm

2 stops12h 00m

Kansas City

Tue 8/19

6:00 am-8:01 pm

2 stops13h 01m

$838

IslipSt. Louis

ISP - STL

ISPSTL

Islip Long Island

Thu 8/21

6:05 am-1:07 pm

1 stop8h 02m

$119

IslipSt. Louis

ISP - STL

ISPSTL

Islip Long Island

Mon 9/1

8:59 am-2:21 pm

1 stop6h 22m

$287

Flights are sorted by cheapest round-trip flights first.

Sorted 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 is the most popular carrier operating from Islip Long Island to Missouri

What airlines fly to Missouri?

United Airlines, Delta and American Airlines 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 34% of people opting to fly with this airline when traveling to Missouri. Keep in mind that there are 6 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

Best Price Found	$119
Fastest flight time	6h 22m
Direct flights	None
Airports in Missouri	2 airports

The best one-way flight to Missouri from Islip, New York in the past 72 hours is $119. The best round-trip flight deal from Islip, New York to Missouri found on momondo in the last 72 hours is $245.

The fastest flight from Islip, New York to Missouri takes 6h 22m

There are no direct flights from Islip, New York to Missouri. Popular non-direct routes for this connection are Islip Long Island Airport - Lambert-St Louis Airport and Islip Long Island Airport - Kansas City Airport.

There are 2 airports near Missouri: Kansas City (MCI), Lambert-St Louis (STL)

Search flight deals

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 2025, 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 $304	Free Cancellation	Rating 8.0 4,246 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.