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

According to our current data, Southwest ($402), offers the cheapest pricing from Islip, New York to Salt Lake City.

In terms of precipitation, rainfall in Salt Lake City ranges from 0.6 - 2.0 inches per month. April is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Salt Lake City when rainfall is around 0.6 in.

If weather is an important factor for your trip to Salt Lake City, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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

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.

Most accurate provider : When it comes to deals on Islip, New York-Salt Lake City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Salt Lake City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Salt Lake City flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Islip, New York-Salt Lake City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Salt Lake City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$149+ Flights from Islip, NY to Salt Lake City

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Cheap 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 January 27, 2026.

Wed 1/286:00 am

ISP

SLC

1 stop8h 55m

Southwest

Tue 2/311:25 am

SLC

ISP

1 stop8h 30m

Southwest

Deal found 1/27

$987

Sat 1/315:45 am

ISP

SLC

1 stop9h 00m

Southwest

Mon 2/211:25 am

SLC

ISP

1 stop8h 30m

Southwest

Deal found 1/27

$1,077

Last-minute flights from Islip to Salt Lake City
Discover last-minute flight deals from Islip to Salt Lake City. Data last updated January 27, 2026 and is based on user searches.

Wed 1/286:00 am

ISP

SLC

1 stop8h 55m

Southwest

Tue 2/311:25 am

SLC

ISP

1 stop8h 30m

Southwest

Deal found 1/27

$987

Sat 1/315:45 am

ISP

SLC

1 stop9h 00m

Southwest

Mon 2/211:25 am

SLC

ISP

1 stop8h 30m

Southwest

Deal found 1/27

$1,077

One-way flights from Islip to Salt Lake City
Search for one-way flight options from Islip to Salt Lake City. Find affordable one-way fares based on user searches. Data last updated January 27, 2026.

Thu 2/263:34 pm

ISP

SLC

2 stops19h 10m

Frontier

Deal found 1/26

$149

Thu 2/263:34 pm

ISP

SLC

3 stops25h 39m

Multiple Airlines

Deal found 1/26

$198

Thu 2/265:35 pm

ISP

SLC

1 stop7h 30m

Southwest

Deal found 1/26

$224

Sun 2/17:53 pm

ISP

SLC

2 stops30h 21m

Frontier

Deal found 1/27

$291

Sun 2/111:55 am

ISP

SLC

3 stops14h 19m

Multiple Airlines

Deal found 1/27

$331

Sun 2/14:05 pm

ISP

SLC

1 stop7h 45m

Southwest

Deal found 1/27

$539

Sun 4/125:45 am

ISP

SLC

1 stop9h 07m

Frontier

Deal found 1/26

$569

Find flight deals from Islip to Salt Lake City

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	February
Cheapest in	August
Average price	$448

Provider with most accurate pricing for Islip Long Island-Salt Lake City flight deals.

Search Deals

Provider most trusted by Cheapflights users for Islip Long Island-Salt Lake City flights.

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. 1% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in January 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Salt Lake City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Thu 2/26

3:34 pm-8:44 am

2 stops19h 10m

$149

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Thu 2/26

3:34 pm-3:13 pm

3 stops25h 39m

$198

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Thu 2/26

5:35 pm-11:05 pm

1 stop7h 30m

$224

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sun 2/1

7:53 pm-12:14 am

2 stops30h 21m

$291

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sun 2/1

11:55 am-12:14 am

3 stops14h 19m

$331

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sun 2/1

4:05 pm-9:50 pm

1 stop7h 45m

$539

IslipSalt Lake City

ISP - SLC

ISPSLC

Islip Long Island

Sun 4/12

5:45 am-12:52 pm

1 stop9h 07m

$569

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Compare providers for flights from Islip to Salt Lake City

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Salt Lake City in January.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Islip, New York-Salt Lake City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Salt Lake City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Salt Lake City flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Islip, New York-Salt Lake City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Salt Lake City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, July is the cheapest month in which you can book a flight from Islip, New York to Salt Lake City (average of $63). Flying from Islip, New York to Salt Lake City in January is currently the most expensive (average of $188). 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 Salt Lake City

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

4,268 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Southwest

8.0

Very good

4,268 reviews

Southwest

8.0

Very good

4,268 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

What is the cheapest airline to fly from Islip, New York to Salt Lake City round-trip?
According to our current data, Southwest ($402), 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, July is the cheapest month in which you can book a flight from Islip, New York to Salt Lake City (average of $63). Flying from Islip, New York to Salt Lake City in January is currently the most expensive (average of $188). 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

Bountiful

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Logan

West Valley City

Draper

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West Jordan

South Jordan

Layton

Alta

Sandy

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Islip to Salt Lake City

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$402	Average$575	FlexibilityNo cancel fee	On-time63%

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$149+ Cheap flights from Islip, NY to Salt Lake City (ISP - SLC)

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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Salt Lake City with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to Salt Lake City

Cheapest flights from Islip to Salt Lake CityExplore 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 January 27, 2026.

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 January 27, 2026.

Find flight deals from Islip to Salt Lake City

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Salt Lake City that are best for you.

Compare providers for flights from Islip to Salt Lake City

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Salt Lake City in January.

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.

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?

Reviews of airlines servicing Salt Lake City

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.

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 is the cheapest airline to fly from Islip, New York to Salt Lake City round-trip?

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

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

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

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

Traveling to a place near Salt Lake City?

Browse thousands of different options on Cheapflights for your next trip

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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.

Top airline flying from Islip to Salt Lake City

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Book with Flexibility

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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 January 27, 2026.