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 38% of people opting to fly with this airline when traveling to Missouri. Keep in mind that there are 7 different airlines that fly to Missouri on a routine basis, so you have a few additional options to choose from.

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

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 April 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.

$97 Cheap Flights from Islip to Missouri in 2025

1 adult

0 bags

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Find the cheapest flights from Islip, New York to Missouri

Round-trip

One-way

Last minute

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Islip, New York to Missouri.

6:48 pm - 12:14 amISP-STL

6h 26m1 stop

5:45 pm - 10:12 amSTL-ISP

15h 27m1 stop

$191Frontier

Find Deal

Fri, May 2 - Wed, May 7

6:48 pm - 12:14 amISP-STL

6h 26m1 stop

5:45 pm - 10:12 amSTL-ISP

15h 27m1 stop

$200Frontier

Find Deal

Fri, May 2 - Sun, May 4

6:48 pm - 12:14 amISP-STL

6h 26m1 stop

5:45 pm - 10:41 amSTL-ISP

15h 56m1 stop

$201Frontier

Find Deal

Fri, May 2 - Mon, May 5

6:48 pm - 12:06 amISP-STL

6h 18m1 stop

5:45 pm - 10:12 amSTL-ISP

15h 27m1 stop

$211Frontier

Find Deal

Mon, May 12 - Sat, May 17

2:08 pm - 12:04 amISP-STL

10h 56m1 stop

5:45 pm - 10:12 amSTL-ISP

15h 27m1 stop

$221Frontier

Find Deal

Mon, Apr 28 - Thu, May 1

8:21 pm - 11:44 pmISP-STL

28h 23m1 stop

5:45 pm - 7:34 pmSTL-ISP

24h 49m1 stop

$251Frontier

Find Deal

Fri, May 23 - Tue, May 27

8:21 pm - 11:52 pmISP-STL

28h 31m1 stop

5:45 pm - 8:11 pmSTL-ISP

25h 26m1 stop

$261Frontier

Find Deal

Wed, May 28 - Fri, May 30

5:45 pm - 11:20 pmISP-STL

6h 35m1 stop

5:05 pm - 12:05 amSTL-ISP

6h 00m1 stop

$312Southwest

Find Deal

Thu, Jun 12 - Thu, Jun 19

5:45 pm - 11:20 pmISP-STL

6h 35m1 stop

3:35 pm - 12:05 amSTL-ISP

7h 30m2 stops

$317Southwest

Find Deal

Thu, Jun 12 - Thu, Jun 19

12:05 pm - 7:10 pmISP-STL

8h 05m2 stops

3:35 pm - 12:05 amSTL-ISP

7h 30m2 stops

$337Southwest

Find Deal

Thu, Jun 12 - Thu, Jun 19

Frontier flights from Islip, New York to Missouri

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

Frontier

May 2

ISP6:48 pmIslip Long Island

6h 26m

1 stop

STL12:14 amLambert-St Louis

May 7

STL5:45 pmLambert-St Louis

15h 27m

1 stop

ISP10:12 amIslip Long Island

$191

Find similar

Frontier

May 2

ISP6:48 pmIslip Long Island

6h 26m

1 stop

STL12:14 amLambert-St Louis

May 4

STL5:45 pmLambert-St Louis

15h 27m

1 stop

ISP10:12 amIslip Long Island

$200

Find similar

Frontier

Apr 21

ISP9:29 pmIslip Long Island

27h 35m

1 stop

STL12:04 amLambert-St Louis

May 2

STL5:55 pmLambert-St Louis

15h 46m

1 stop

ISP10:41 amIslip Long Island

$201

Find similar

Southwest flights from Islip, New York to Missouri

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

Southwest

Jun 12

ISP5:45 pmIslip Long Island

6h 35m

1 stop

STL11:20 pmLambert-St Louis

Jun 19

STL5:05 pmLambert-St Louis

6h 00m

1 stop

ISP12:05 amIslip Long Island

$312

Find similar

Southwest

Jun 12

ISP5:45 pmIslip Long Island

6h 35m

1 stop

STL11:20 pmLambert-St Louis

Jun 19

STL3:35 pmLambert-St Louis

7h 30m

2 stops

ISP12:05 amIslip Long Island

$317

Find similar

Southwest

Jun 12

ISP12:05 pmIslip Long Island

8h 05m

2 stops

STL7:10 pmLambert-St Louis

Jun 19

STL3:35 pmLambert-St Louis

7h 30m

2 stops

ISP12:05 amIslip Long Island

$337

Find similar

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

Prices

Airlines

What is the cheapest time of day to depart on your flight to Missouri?

According to our data, the cheapest time of day to fly to Missouri is in the morning. momondo users have found flights departing from Islip, New York to Missouri in the morning for as low as $366. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Missouri are more costly in the morning, with an average ticket price of $366. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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	$97
Fastest flight time	6h 18m
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 $97. The best round-trip flight deal from Islip, New York to Missouri found on momondo in the last 72 hours is $191.

The fastest flight from Islip, New York to Missouri takes 6h 18m

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)

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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 April 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 $348	Free Cancellation	Rating 8.0 4,280 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.