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$135+ Cheap flights from Des Moines to Islip (DSM - 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
DSM — ISP
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Des Moines to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Des Moines (DSM) 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.

Popular in

March

Cheapest in

September

Average price

$235
Highest demand for flights based on searches. 10% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Des Moines to Islip

One-way flights from Des Moines to Islip
Search for one-way flight options from Des Moines to Islip. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:20 amDSM - ISP
2 stops8h 45mSouthwest
Deal found 9/11$135
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/303:25 pmDSM - ISP
2 stops19h 30mSouthwest
Deal found 9/11$146
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/13:17 pmDSM - ISP
1 stop18h 38mMultiple Airlines
Deal found 9/11$157
This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3011:31 amDSM - ISP
3 stops26h 50mMultiple Airlines
Deal found 9/11$483
This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/711:31 amDSM - ISP
3 stops22h 27mMultiple Airlines
Deal found 9/11$519

Cheapflights Fare Finder

 
Customize your flight search to find flights from Des Moines 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 Des Moines to Islip that are best for you.

Fly from

Des Moines

Fly to

Islip

Route

Depart

Return

Price

Des MoinesIslip

DSM - ISP

DSMISP

Des Moines

Tue 10/7

6:20 am-4:05 pm

2 stops8h 45m

$135

Des MoinesIslip

DSM - ISP

DSMISP

Des Moines

Tue 9/30

3:25 pm-11:55 am

2 stops19h 30m

$146

Des MoinesIslip

DSM - ISP

DSMISP

Des Moines

Wed 10/1

3:17 pm-10:55 am

1 stop18h 38m

$157

Des MoinesIslip

DSM - ISP

DSMISP

Des Moines

Tue 9/30

11:31 am-3:21 pm

3 stops26h 50m

$483

Des MoinesIslip

DSM - ISP

DSMISP

Des Moines

Tue 10/7

11:31 am-10:58 am

3 stops22h 27m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Des Moines to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Des Moines 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 Des Moines to Islip

What is the cheapest month to book a flight from Des Moines to Islip?

Currently, January is the cheapest month in which you can book a flight from Des Moines to Islip (average of $108). Flying from Des Moines 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.

Related info for your journey

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

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

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

  • How can I find direct flights from Des Moines to Islip?

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

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

    Yes. Cheapflights offers flight deals from Des Moines 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 Des Moines to Islip?

    Currently, January is the cheapest month in which you can book a flight from Des Moines to Islip (average of $108). Flying from Des Moines 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
Riverhead
Southampton

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