How long does it take to fly to Islip, New York?

The flight from Missouri to Islip, New York depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from St. Louis (a popular airport in Missouri) to New York John F Kennedy Intl Airport (the most popular airport in Islip, New York), then the flight time is 2h 28m on average. If you fly from Kansas City (another popular airport in Missouri) to New York John F Kennedy Intl Airport, then the average flight time is 2h 53m.

What airlines fly to Islip, New York?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to Islip, New York from Missouri according to our data. Delta is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 6 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

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

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

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

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

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

As of November 2025, there is 1 operator available to choose from for flights from Missouri to Islip Long Island Airport.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Missouri to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$100 Cheap Flights from Missouri to Islip in 2025/26

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6:05 am - 4:15 pmSTL-ISP

9h 10m2 stops

3:15 pm - 11:30 pmISP-STL

9h 15m1 stop

$262Southwest

Find Deal

Tue, Feb 24 - Sat, Feb 28

6:05 am - 4:15 pmSTL-ISP

9h 10m2 stops

1:10 pm - 9:10 pmISP-STL

9h 00m2 stops

$267Southwest

Find Deal

Tue, Feb 24 - Sat, Feb 28

6:00 am - 10:18 amMCI-ISP

27h 18m1 stop

6:00 am - 7:14 pmISP-MCI

38h 14m2 stops

$338Multiple Airlines

Find Deal

Mon, Nov 24 - Wed, Dec 3

6:20 pm - 11:50 pmMCI-ISP

4h 30m1 stop

5:40 am - 11:35 amISP-MCI

6h 55m1 stop

$421Southwest

Find Deal

Mon, Nov 24 - Wed, Dec 3

6:10 pm - 11:55 pmMCI-ISP

4h 45m1 stop

5:55 pm - 11:10 pmISP-MCI

6h 15m1 stop

$436Southwest

Find Deal

Tue, Dec 23 - Sat, Jan 3

6:10 pm - 11:55 pmMCI-ISP

4h 45m1 stop

5:30 am - 4:05 pmISP-MCI

11h 35m2 stops

$447Southwest

Find Deal

Tue, Dec 23 - Sat, Jan 3

1:00 pm - 11:55 pmSTL-ISP

9h 55m1 stop

5:30 am - 1:25 pmISP-STL

8h 55m2 stops

$495Southwest

Find Deal

Tue, Dec 23 - Sat, Dec 27

8:45 am - 4:06 pmSTL-ISP

6h 21m1 stop

1:10 pm - 7:11 pmISP-STL

7h 01m1 stop

$786Frontier

Find Deal

Fri, Feb 20 - Sun, Feb 22

10:24 am - 7:30 pmSTL-ISP

8h 06m1 stop

11:32 am - 11:57 pmISP-STL

13h 25m1 stop

$950Frontier

Find Deal

Sun, Nov 23 - Fri, Nov 28

8:00 am - 4:15 pmSGF-ISP

31h 15m2 stops

9:59 am - 2:44 pmISP-SGF

29h 45m2 stops

$1,056Multiple Airlines

Find Deal

Sun, Mar 1 - Sun, Mar 8

Southwest flights from Missouri to Islip, New York

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

Southwest

Feb 24

STL6:05 amLambert-St Louis

9h 10m

2 stops

ISP4:15 pmIslip Long Island

Feb 28

ISP3:15 pmIslip Long Island

9h 15m

1 stop

STL11:30 pmLambert-St Louis

$262

Find similar

Southwest

Feb 24

STL6:05 amLambert-St Louis

9h 10m

2 stops

ISP4:15 pmIslip Long Island

Feb 28

ISP1:10 pmIslip Long Island

9h 00m

2 stops

STL9:10 pmLambert-St Louis

$267

Find similar

Southwest

Nov 24

MCI6:20 pmKansas City

4h 30m

1 stop

ISP11:50 pmIslip Long Island

Dec 3

ISP5:40 amIslip Long Island

6h 55m

1 stop

MCI11:35 amKansas City

$421

Find similar

Frontier flights from Missouri to Islip, New York

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

Frontier

Feb 20

STL8:45 amLambert-St Louis

6h 21m

1 stop

ISP4:06 pmIslip Long Island

Feb 22

ISP1:10 pmIslip Long Island

7h 01m

1 stop

STL7:11 pmLambert-St Louis

$786

Find similar

Frontier

Nov 23

STL10:24 amLambert-St Louis

8h 06m

1 stop

ISP7:30 pmIslip Long Island

Nov 28

ISP11:32 amIslip Long Island

13h 25m

1 stop

STL11:57 pmLambert-St Louis

$950

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Tue 2/24

6:05 am-4:15 pm

2 stops9h 10m

Islip Long Island

Sat 2/28

3:15 pm-11:30 pm

1 stop9h 15m

$262

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Tue 2/24

6:05 am-4:15 pm

2 stops9h 10m

Islip Long Island

Sat 2/28

1:10 pm-9:10 pm

2 stops9h 00m

$267

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Mon 11/24

6:00 am-10:18 am

1 stop27h 18m

Islip Long Island

Wed 12/3

6:00 am-7:14 pm

2 stops38h 14m

$338

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Mon 11/24

6:20 pm-11:50 pm

1 stop4h 30m

Islip Long Island

Wed 12/3

5:40 am-11:35 am

1 stop6h 55m

$421

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Tue 12/23

6:10 pm-11:55 pm

1 stop4h 45m

Islip Long Island

Sat 1/3

5:55 pm-11:10 pm

1 stop6h 15m

$436

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Tue 12/23

6:10 pm-11:55 pm

1 stop4h 45m

Islip Long Island

Sat 1/3

5:30 am-4:05 pm

2 stops11h 35m

$447

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Tue 12/23

1:00 pm-11:55 pm

1 stop9h 55m

Islip Long Island

Sat 12/27

5:30 am-1:25 pm

2 stops8h 55m

$495

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Fri 2/20

8:45 am-4:06 pm

1 stop6h 21m

Islip Long Island

Sun 2/22

1:10 pm-7:11 pm

1 stop7h 01m

$786

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Sun 11/23

10:24 am-7:30 pm

1 stop8h 06m

Islip Long Island

Fri 11/28

11:32 am-11:57 pm

1 stop13h 25m

$950

SpringfieldIslip

SGF - ISP

SGFISP

Springfield-Branson

Sun 3/1

8:00 am-4:15 pm

2 stops31h 15m

Islip Long Island

Sun 3/8

9:59 am-2:44 pm

2 stops29h 45m

$1,056

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Missouri to Islip, New York is on a Saturday. Travelers who choose to depart for Islip, New York on a Saturday will often find tickets for as low as $156. The most expensive day to fly to Islip, New York is Thursday, with ticket prices averaging around $416.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Missouri in the evening is the least expensive time of day to depart. momondo users have found prices as low as $156 when looking at flights departing in the evening. Flights to Islip, New York are more costly in the morning, with an average ticket price of $386. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Missouri to Islip, New York flights?

You could potentially save up to 53% on your flight if you consider stops on a Missouri to Islip, New York flight.

Cheap Missouri to Islip, New York flight deals and tips

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Missouri to Islip Long Island Airport?
Prices for flights from Missouri to Islip Long Island Airport were last updated today.
How many operators does momondo search for flights from Missouri to Islip Long Island Airport?
As of November 2025, there is 1 operator available to choose from for flights from Missouri to Islip Long Island Airport.
How old do you have to be to fly from Missouri to Islip Long Island Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Missouri to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Missouri to Islip, New York

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

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $259	Free Cancellation	Rating 8.0 4,241 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

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

It is quick and easy to find Missouri to Islip flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Islip that suits you.

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

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

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

momondo provides multiple filters to help you find the best flight to Islip from Missouri. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Missouri to Islip flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Missouri to New York from $100

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to New York departing on 12/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Filter for what you want

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Southwest flights from Missouri to Islip, New York

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

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

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

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 day to depart on your flight to Islip, New York?

The cheapest day to depart from Missouri to Islip, New York is on a Saturday. Travelers who choose to depart for Islip, New York on a Saturday will often find tickets for as low as $156. The most expensive day to fly to Islip, New York is Thursday, with ticket prices averaging around $416.

What is the cheapest time of day to depart on your flight to Islip, New York?

Can stopping save me money on Missouri to Islip, New York flights?

You could potentially save up to 53% on your flight if you consider stops on a Missouri to Islip, New York flight.

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

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

What airlines fly to Islip, New York?

How long does it take to fly to Islip, New York?

Cheap Missouri to Islip, New York flight deals and tips

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

Direct flights

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

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

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

What documentation or ID do you need to fly to Islip Long Island Airport?

Best airlines flying from Missouri to Islip, New York

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

Traveling to a place near New York?

Why use momondo?

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

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

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

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

An easier way to manage your Islip, New York trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing New York