What are the cheapest airlines flying from Islip, New York to Dallas round-trip?

Cheapflights users have booked flights from Islip, New York to Dallas round-trip from $115. Another airline that can offer you cheap pricing is Southwest. You may be able to fly from Islip, New York to Dallas for 75% less than the average price by searching for these airlines.

In terms of precipitation, rainfall in Dallas ranges from 1.9 - 4.9 inches per month. May is typically the wettest month, when rainfall can reach 4.9 in. August is typically the driest time to visit Dallas when rainfall is around 1.9 in.

If weather is an important factor for your trip to Dallas, 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 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 46.4 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Islip, New York to Dallas as you normally would.

What airport do you fly from for flights from Islip to Dallas?

Islip Long Island (ISP) is the airport you will fly out of if you book a flight from Islip to Dallas. You should not have trouble finding flights to Dallas from Long Island; the airport handles an average of 0 outbound flights to Dallas per day. You should also have plenty of airline options to choose from since 2 airlines have flights from the Islip airport to Dallas. It is only a 7.2 mi journey to Long Island (ISP) from Islip’s city center.

Can I find deals for flights from Islip to Dallas that include hotel bookings?

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

How can I find direct flights from Islip to Dallas?

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

Can I find deals for business class flights from Islip to Dallas?

Yes. Cheapflights offers flight deals from Islip to Dallas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Cheap Flights from Islip, NY to Dallas

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Find flight deals from Islip to Dallas

Popular in	August
Cheapest in	November
Average price	$403

Highest demand for flights based on searches. 28% potential increase in price ($188 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 12% potential price decrease ($53 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

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Best time to book a flight from Islip to Dallas

Have a flexible travel schedule? Discover the best time to fly to Dallas from Islip with our price prediction graph.

ISP-A78

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.

Reviews of airlines servicing Dallas

Read through reviews of airlines operating flights from Islip to Dallas, such as Southwest and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,223 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

7.9

Good

4,223 reviews

Southwest

7.9

Good

4,223 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Frontier

5.5

Fair

2,520 reviews

Southwest

7.9

Good

4,223 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What airport do you fly from for flights from Islip to Dallas?
Islip Long Island (ISP) is the airport you will fly out of if you book a flight from Islip to Dallas. You should not have trouble finding flights to Dallas from Long Island; the airport handles an average of 0 outbound flights to Dallas per day. You should also have plenty of airline options to choose from since 2 airlines have flights from the Islip airport to Dallas. It is only a 7.2 mi journey to Long Island (ISP) from Islip’s city center.
What are the cheapest airlines flying from Islip, New York to Dallas round-trip?
Cheapflights users have booked flights from Islip, New York to Dallas round-trip from $115. Another airline that can offer you cheap pricing is Southwest. You may be able to fly from Islip, New York to Dallas for 75% less than the average price by searching for these airlines.
Can I find deals for flights from Islip to Dallas that include hotel bookings?
Yes. In addition to deals on Islip to Dallas flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Dallas?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Dallas.
Can I find deals for business class flights from Islip to Dallas?
Yes. Cheapflights offers flight deals from Islip to Dallas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 2 airlines flying from Islip to Dallas

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$115	Average$198	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$259	Average$434	FlexibilityNo cancel fee	On-time63%

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Find cheap flights from Islip to Dallas with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Islip to Dallas

Popular in

Cheapest in

Average price

Best time to book a flight from Islip to Dallas

Have a flexible travel schedule? Discover the best time to fly to Dallas from Islip with our price prediction graph.

Reviews of airlines servicing Dallas

Read through reviews of airlines operating flights from Islip to Dallas, such as Southwest and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Islip to Dallas?

What are the cheapest airlines flying from Islip, New York to Dallas round-trip?

Can I find deals for flights from Islip to Dallas that include hotel bookings?

How can I find direct flights from Islip to Dallas?

Can I find deals for business class flights from Islip to Dallas?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Islip to Dallas

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Dallas by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Islip to Dallas by cabin class

Find flights from Islip to Dallas, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Islip and Dallas flights

Browse other Islip and Dallas flight options. Last updated on October 24, 2026.

Other flights from Islip

Browse through other flights departing from Islip. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top 2 airlines flying from Islip to Dallas

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Book with Flexibility

Travel Smart

Cheap flights from Islip, NY (ISP) to Dallas

Find cheap flights from Islip to Dallas with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Islip to Dallas

Popular in

Cheapest in

Average price

Best time to book a flight from Islip to Dallas

Have a flexible travel schedule? Discover the best time to fly to Dallas from Islip with our price prediction graph.

Reviews of airlines servicing Dallas

Read through reviews of airlines operating flights from Islip to Dallas, such as Southwest and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Islip to Dallas?

What are the cheapest airlines flying from Islip, New York to Dallas round-trip?

Can I find deals for flights from Islip to Dallas that include hotel bookings?

How can I find direct flights from Islip to Dallas?

Can I find deals for business class flights from Islip to Dallas?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Islip to Dallas

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Dallas by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Islip to Dallas by cabin class

Find flights from Islip to Dallas, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Islip and Dallas flights

Browse other Islip and Dallas flight options. Last updated on October 24, 2026.

Other flights from Islip

Browse through other flights departing from Islip. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top 2 airlines flying from Islip to Dallas

100% Free

Book with Flexibility

Travel Smart