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Islip

$226+ Cheap flights from Kansas City to Islip (MCI - ISP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — ISP
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Kansas City to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Kansas City (MCI) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$226
(Frontier)

Popular in

December

Cheapest in

May

Average price

$411
From Kansas City to Islip Long Island
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Kansas City to Islip

Cheapest flights from Kansas City to Islip
Explore the most affordable flight options available from Kansas City to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Frontier deal was found by Cheapflights users on 9/9. 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.
Thu 11/1311:12 amMCI - ISP
2 stops20h 42mFrontier
Sun 11/169:27 pmISP - MCI
2 stops13h 50mFrontier
Deal found 9/9$226
This Frontier deal was found by Cheapflights users on 9/11. 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.
Sun 10/2611:37 amMCI - ISP
2 stops22h 00mFrontier
Sun 11/29:27 pmISP - MCI
2 stops13h 50mFrontier
Deal found 9/11$293
This Frontier deal was found by Cheapflights users on 9/11. 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.
Fri 10/1711:37 amMCI - ISP
2 stops22h 00mFrontier
Sun 10/199:47 pmISP - MCI
2 stops13h 55mFrontier
Deal found 9/11$296
This Southwest deal was found by Cheapflights users on 9/9. 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.
Mon 12/226:10 pmMCI - ISP
1 stop4h 45mSouthwest
Wed 12/315:40 amISP - MCI
1 stop6h 55mSouthwest
Deal found 9/9$377

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kansas City 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 September 11, 2025.
Use the filters below to find and compare flights from Kansas City to Islip that are best for you.

Fly from

Kansas City

Fly to

Islip

Route

Depart

Return

Price

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Thu 11/13

11:12 am-8:54 am

2 stops20h 42m

Islip Long Island

Sun 11/16

9:27 pm-10:17 am

2 stops13h 50m

$226

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Sun 10/26

11:37 am-10:37 am

2 stops22h 00m

Islip Long Island

Sun 11/2

9:27 pm-10:17 am

2 stops13h 50m

$293

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Fri 10/17

11:37 am-10:37 am

2 stops22h 00m

Islip Long Island

Sun 10/19

9:47 pm-10:42 am

2 stops13h 55m

$296

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Mon 12/22

6:10 pm-11:55 pm

1 stop4h 45m

Islip Long Island

Wed 12/31

5:40 am-11:35 am

1 stop6h 55m

$377

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Sat 12/27

4:30 pm-12:11 am

1 stop6h 41m

$454

Kansas CityIslip

MCI - ISP

MCIISP

Kansas City

Sat 12/20

4:30 pm-12:11 am

1 stop6h 41m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Kansas City to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Kansas City 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 Kansas City to Islip

What is the cheapest month to book a flight from Kansas City to Islip?

Currently, January is the cheapest month in which you can book a flight from Kansas City to Islip (average of $108). Flying from Kansas City to Islip in November is currently the most expensive (average of $213). 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.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Southwest from Kansas City to Islip to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

  • How long is the flight from Kansas City to Islip?

    Frontier and Southwest can get you from Kansas City to Islip in just under 4h 45m. Your travel time can differ by up to 15h 57m. The distance between Kansas City and Islip is about 1145 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Kansas City to Islip round-trip?

    Cheapflights users have booked flights from Kansas City to Islip round-trip from $290. Southwest is 30% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

  • How can I find direct flights from Kansas City to Islip?

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

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

    Yes. Cheapflights offers flight deals from Kansas City 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 Kansas City to Islip?

    Currently, January is the cheapest month in which you can book a flight from Kansas City to Islip (average of $108). Flying from Kansas City to Islip in November is currently the most expensive (average of $213). 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
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Alternative routes for Kansas City to Islip

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Top airline flying from Kansas City to Islip

Discover the top airline that operate flights from Kansas City 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$290Average$391FlexibilityNo cancel feeOn-time63%

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