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Islip

$100+ Cheap flights from Missouri to Islip, NY (ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ISP
dic. 6 — dic. 131
sáb. 12/6
sáb. 12/13
1 adult, Economy
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Cheap flight deals from Missouri to Islip

Keep the following information in mind while searching for Missouri to Islip flight deals. Data was last updated noviembre 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$338
(Kiwi.com)

One-way from

$100
(Kiwi.com)

Popular in

November

Cheapest in

April

Average price

$381
Provider with most accurate pricing for Lambert-St Louis-New York (NYC) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-New York (NYC) flights.
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From Missouri to Islip Long Island
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One-way flight from Missouri to Islip Long Island
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Highest demand for flights based on searches. 15% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Missouri to Islip

Cheapest flights from Missouri to Islip
Explore the most affordable flight options available from Missouri to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 6, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/246:00 amMCI - ISP
1 stop27h 18mMultiple Airlines
mié. 12/36:00 amISP - MCI
2 stops38h 14mMultiple Airlines
Deal found 11/5$338
This Frontier deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2910:40 amSTL - ISP
1 stop8h 00mFrontier
sáb. 1/1712:35 pmISP - STL
1 stop11h 02mFrontier
Deal found 11/6$360
This Southwest deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/246:20 pmMCI - ISP
1 stop4h 30mSouthwest
mié. 12/35:40 amISP - MCI
1 stop6h 55mSouthwest
Deal found 11/5$421
This Southwest deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/236:10 pmMCI - ISP
1 stop4h 45mSouthwest
sáb. 1/35:55 pmISP - MCI
1 stop6h 15mSouthwest
Deal found 11/5$436
This Southwest deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/156:25 amMCI - ISP
1 stop4h 25mSouthwest
dom. 11/305:00 pmISP - MCI
1 stop7h 55mSouthwest
Deal found 11/5$792
This Frontier deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/2310:24 amSTL - ISP
1 stop8h 06mFrontier
vie. 11/2811:32 amISP - STL
1 stop13h 25mFrontier
Deal found 11/6$950
This United deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/236:00 amMCI - ISP
3 stops28h 04mMultiple Airlines
sáb. 1/37:30 amISP - MCI
2 stops13h 12mMultiple Airlines
Deal found 11/5$1,371

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Islip that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 6, 2025.
Use the filters below to find and compare flights from Missouri to Islip that are best for you.

Fly from

Missouri

Fly to

Islip

Route

Depart

Return

Price

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

lun. 11/24

6:00 am-10:18 am

1 stop27h 18m

Islip Long Island

mié. 12/3

6:00 am-7:14 pm

2 stops38h 14m

$338

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

lun. 12/29

10:40 am-7:40 pm

1 stop8h 00m

Islip Long Island

sáb. 1/17

12:35 pm-10:37 pm

1 stop11h 02m

$360

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

lun. 11/24

6:20 pm-11:50 pm

1 stop4h 30m

Islip Long Island

mié. 12/3

5:40 am-11:35 am

1 stop6h 55m

$421

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

mar. 12/23

6:10 pm-11:55 pm

1 stop4h 45m

Islip Long Island

sáb. 1/3

5:55 pm-11:10 pm

1 stop6h 15m

$436

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

dom. 11/23

10:24 am-7:30 pm

1 stop8h 06m

Islip Long Island

vie. 11/28

11:32 am-11:57 pm

1 stop13h 25m

$950

SpringfieldIslip

SGF - ISP

SGFISP

Springfield-Branson

dom. 3/1

8:00 am-4:15 pm

2 stops31h 15m

Islip Long Island

dom. 3/8

9:59 am-2:44 pm

2 stops29h 45m

$1,056

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

mar. 12/23

6:00 am-11:04 am

3 stops28h 04m

Islip Long Island

sáb. 1/3

7:30 am-7:42 pm

2 stops13h 12m

$1,371

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

mié. 12/24

11:33 am-11:25 am

2 stops22h 52m

$100

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

mié. 12/24

11:33 am-11:25 am

2 stops22h 52m

$100

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

mié. 12/24

11:25 am-9:30 pm

1 stop9h 05m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 11 results
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Best time to book a flight from Missouri to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Islip

What is the cheapest month to book a flight from Missouri to Islip, New York?

Currently, November is the cheapest month in which you can book a flight from Missouri to Islip, New York (average of $106). Flying from Missouri to Islip, New York in June is currently the most expensive (average of $186). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MO to ISP?

Find hourly flight availability from Missouri to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 6, 2025.

When flying from Missouri to Islip, New York, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 64% versus a flight in the morning.

How much does it cost to fly round-trip from Missouri to Islip, New York?

Related info for your journey

Find useful and relevant information for your journey from Missouri to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Islip from Missouri?

    If you book a flight to Islip from Missouri, you will be flying to Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.

  • How long is the flight from Missouri to Islip, New York?

    There are many flights that can get you from Missouri to Islip, New York in 4h 30m. Fly via Frontier or Southwest to get the fastest option. There are 1145 mi between Missouri and Islip, New York. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Missouri to Islip, New York?

    The most popular route from Missouri to Islip, New York is Lambert-St Louis - Islip Long Island. You may also consider Kansas City - Islip Long Island or Springfield-Branson - Islip Long Island.

  • Can I find deals for flights from Missouri to Islip that include hotel bookings?

    Yes. In addition to deals on Missouri to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Islip.

  • Can I find deals for business class flights from Missouri to Islip?

    Yes. Cheapflights offers flight deals from Missouri to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to Islip, New York?

    Currently, November is the cheapest month in which you can book a flight from Missouri to Islip, New York (average of $106). Flying from Missouri to Islip, New York in June is currently the most expensive (average of $186). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
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Alternative routes for Missouri to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Missouri to Islip

Discover the top airline that operate flights from Missouri to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$259Average$379FlexibilityNo cancel feeOn-time63%

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