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$578+ Cheap flights from Islip, NY 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SLC
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$578
(Trip.com)

Popular in

December

Cheapest in

November

Average price

$417
From Islip Long Island to Salt Lake City
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 29, 2025.

This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/88:37 pmISP - SLC
1 stop19h 11mMultiple Airlines
Mon 8/112:43 pmSLC - ISP
1 stop29h 15mMultiple Airlines
Deal found 7/27$578
This Southwest deal was found by Cheapflights users on 7/27. 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 8/126:05 amISP - SLC
1 stop8h 45mSouthwest
Fri 8/1512:20 pmSLC - ISP
1 stop8h 35mSouthwest
Deal found 7/27$587
This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/88:37 pmISP - SLC
2 stops48h 12mFrontier
Mon 8/118:55 pmSLC - ISP
2 stops23h 03mFrontier
Deal found 7/27$643

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 July 29, 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

Fri 8/8

8:37 pm-1:48 pm

1 stop19h 11m

Salt Lake City

Mon 8/11

2:43 pm-9:58 pm

1 stop29h 15m

$578

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Tue 8/12

6:05 am-12:50 pm

1 stop8h 45m

Salt Lake City

Fri 8/15

12:20 pm-10:55 pm

1 stop8h 35m

$587

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Fri 8/8

8:37 pm-6:49 pm

2 stops48h 12m

Salt Lake City

Mon 8/11

8:55 pm-9:58 pm

2 stops23h 03m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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, New York to Salt Lake City?

Currently, October is the cheapest month in which you can book a flight from Islip, New York to Salt Lake City (average of $277). Flying from Islip, New York 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 July 29, 2025.

When flying from Islip, New York 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 July 29, 2025.
Peruse reviews from past customers who have flown with Southwest and Frontier 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
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Frontier
5.9
Fair
3,238 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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.

  • What are the cheapest airlines flying from Islip, New York to Salt Lake City round-trip?

    According to our current data, Southwest ($587), and Frontier ($643) offers the cheapest pricing from Islip, New York to Salt Lake City.

  • 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, New York to Salt Lake City?

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

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