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$245+ Cheap flights from Islip to Salt Lake City (ISP - SLC)

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SLC
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Islip to Salt Lake City

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Salt Lake City (SLC). 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 15, 2025.

Round-trip from

$245
(Frontier)

Popular in

February

Cheapest in

November

Average price

$426
From Islip Long Island to Salt Lake City
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 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 Islip to Salt Lake City

Cheapest flights from Islip to Salt Lake City
Explore the most affordable flight options available from Islip to Salt Lake City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Frontier deal was found by Cheapflights users on 9/13. 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.
Sat 9/275:05 pmISP - SLC
2 stops16h 27mFrontier
Thu 10/23:20 pmSLC - ISP
2 stops15h 44mFrontier
Deal found 9/13$245
This Frontier deal was found by Cheapflights users on 9/13. 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.
Sat 9/275:05 pmISP - SLC
2 stops16h 27mFrontier
Tue 9/306:05 pmSLC - ISP
2 stops14h 35mFrontier
Deal found 9/13$251
This Frontier deal was found by Cheapflights users on 9/13. 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.
Sat 9/275:05 pmISP - SLC
2 stops16h 27mFrontier
Mon 9/294:02 pmSLC - ISP
2 stops16h 38mFrontier
Deal found 9/13$260
This Frontier deal was found by Cheapflights users on 9/13. 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 9/289:49 amISP - SLC
2 stops16h 25mFrontier
Thu 10/23:20 pmSLC - ISP
2 stops15h 44mFrontier
Deal found 9/13$294
This Frontier deal was found by Cheapflights users on 9/13. 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 9/289:49 amISP - SLC
2 stops16h 25mFrontier
Mon 9/294:02 pmSLC - ISP
2 stops16h 38mFrontier
Deal found 9/13$332
This Frontier deal was found by Cheapflights users on 9/13. 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 9/2511:40 amISP - SLC
2 stops21h 52mFrontier
Mon 9/294:02 pmSLC - ISP
2 stops16h 38mFrontier
Deal found 9/13$357
This Frontier deal was found by Cheapflights users on 9/13. 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 10/99:37 pmISP - SLC
2 stops19h 10mFrontier
Tue 10/145:34 pmSLC - ISP
2 stops15h 23mFrontier
Deal found 9/13$411
This Southwest deal was found by Cheapflights users on 9/13. 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 11/255:40 amISP - SLC
1 stop13h 00mSouthwest
Sun 11/309:10 pmSLC - ISP
2 stops12h 45mSouthwest
Deal found 9/13$729

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Salt Lake City 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 15, 2025.
Use the filters below to find and compare flights from Islip to Salt Lake City that are best for you.

Fly from

Islip

Fly to

Salt Lake City

Route

Depart

Return

Price

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sat 9/27

5:05 pm-7:32 am

2 stops16h 27m

Salt Lake City

Thu 10/2

3:20 pm-9:04 am

2 stops15h 44m

$245

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sat 9/27

5:05 pm-7:32 am

2 stops16h 27m

Salt Lake City

Wed 10/1

6:05 pm-10:55 am

2 stops14h 50m

$251

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sat 9/27

5:05 pm-7:32 am

2 stops16h 27m

Salt Lake City

Tue 9/30

6:05 pm-10:40 am

2 stops14h 35m

$251

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sat 9/27

5:05 pm-7:32 am

2 stops16h 27m

Salt Lake City

Fri 10/3

8:44 pm-10:55 am

2 stops12h 11m

$251

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sun 9/28

9:49 am-12:14 am

2 stops16h 25m

Salt Lake City

Thu 10/2

3:20 pm-9:04 am

2 stops15h 44m

$294

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sun 9/28

9:49 am-12:14 am

2 stops16h 25m

Salt Lake City

Mon 9/29

4:02 pm-10:40 am

2 stops16h 38m

$332

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Wed 1/21

12:40 pm-9:45 pm

2 stops11h 05m

Salt Lake City

Sat 1/24

1:20 pm-9:50 pm

1 stop6h 30m

$353

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Thu 9/25

11:40 am-7:32 am

2 stops21h 52m

Salt Lake City

Mon 9/29

4:02 pm-10:40 am

2 stops16h 38m

$357

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Thu 10/9

9:37 pm-2:47 pm

2 stops19h 10m

Salt Lake City

Tue 10/14

5:34 pm-10:57 am

2 stops15h 23m

$411

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Best time to book a flight from Islip to Salt Lake City

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

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

Currently, October is the cheapest month in which you can book a flight from Islip to Salt Lake City (average of $277). Flying from Islip to Salt Lake City in March is currently the most expensive (average of $417). 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 ISP to SLC?

Find hourly flight availability from Islip to Salt Lake City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Islip to Salt Lake City, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Salt Lake City

Get insights into the airlines that provide service to Salt Lake City. 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 Salt Lake City. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Southwest from Islip to Salt Lake City 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
4,245 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
4,245 reviews
Southwest
8.0
Very good
4,245 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 Islip to Salt Lake City. 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 Islip to Salt Lake City?

    Airlines like Frontier fly from Islip to Salt Lake City in about 16h 27m. The time it takes to get you to your destination can typically vary by up to . The distance between Islip and Salt Lake City is about 2016 mi.

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

    Currently priced at $402, Southwest will fly you from Islip to Salt Lake City and back. In addition to Southwest, many other airlines offer competitively priced options for your trip.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Islip to Salt Lake City 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 Islip to Salt Lake City?

    Currently, October is the cheapest month in which you can book a flight from Islip to Salt Lake City (average of $277). Flying from Islip to Salt Lake City in March is currently the most expensive (average of $417). 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 Salt Lake City?

Book flights to Salt Lake City if you plan to visit one of these locations
Bountiful
Midvale
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Logan
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Draper
Sandy

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Alternative routes for Islip to Salt Lake City

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

Discover the top airline that operate flights from Islip to Salt Lake City. 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$402Average$518FlexibilityNo cancel feeOn-time63%

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