What is the cheapest airline that flies from Islip Long Island to United States?

Breeze Airways, Frontier, and Southwest are the most popular carriers operating from Islip Long Island to United States

How many flights depart from Islip to United States on average per day?

As of October 2025, 8 flights take off from Islip and land in United States each day. The most common flight departure time for this route is 11:00AM, with 57% of daily flights taking off in the afternoon.

How many flights depart from Islip to United States on average per week?

As of October 2025, 56 flights take off from Islip and land in United States each week. The most common flight departure day for this route is Mon, with 21% of weekly flights taking off on this day.

What airlines fly to United States?

United Airlines, Delta and Spirit Airlines are the top three most popular airlines that fly to United States from Islip according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 13 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Islip Long Island Airport to United States?

Prices for flights from Islip Long Island Airport to United States were last updated today.

How many operators does momondo search for flights from Islip Long Island Airport to United States?

As of October 2025, there are 7 operators available to choose from for flights from Islip Long Island Airport to United States.

How old do you have to be to fly from Islip Long Island Airport to United States?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to United States.

What documentation or ID do you need to fly to United States?

The travel and health documents you'll need for your trip to United States may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United States. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$37 Cheap Flights from Islip to the United States in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Islip to the United States

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:37 pm - 7:32 amISP-DFW

13h 55m1 stop

9:10 pm - 5:42 pmDFW-ISP

19h 32m1 stop

$68Frontier

Find Deal

Thu, Nov 13 - Mon, Nov 17

4:58 pm - 10:58 amISP-CLT

18h 00m1 stop

8:04 pm - 5:42 pmCLT-ISP

21h 38m1 stop

$68Frontier

Find Deal

Sat, Nov 15 - Mon, Nov 17

11:40 am - 4:00 pmISP-TPA

4h 20m1 stop

7:00 am - 11:00 amTPA-ISP

4h 00m1 stop

$118Breeze Airways

Find Deal

Thu, Oct 30 - Sun, Nov 2

11:45 am - 4:05 pmISP-TPA

4h 20m1 stop

7:05 am - 11:05 amTPA-ISP

4h 00m1 stop

$119Breeze Airways

Find Deal

Thu, Jan 8 - Sun, Jan 11

1:10 pm - 4:00 pmISP-MCO

2h 50mnonstop

5:40 pm - 8:10 pmMCO-ISP

2h 30mnonstop

$131Southwest

Find Deal

Wed, Oct 29 - Sat, Nov 1

5:25 am - 11:40 amISP-MCO

6h 15m1 stop

8:40 am - 11:10 amMCO-ISP

2h 30mnonstop

$141Southwest

Find Deal

Sun, Oct 26 - Sat, Nov 1

6:56 pm - 9:48 pmISP-FLL

2h 52mnonstop

3:10 pm - 6:01 pmFLL-ISP

2h 51mnonstop

$144JetBlue

Find Deal

Thu, Nov 20 - Thu, Nov 27

11:50 am - 2:44 pmISP-FLL

2h 54mnonstop

8:10 am - 11:05 amFLL-ISP

2h 55mnonstop

$147JetBlue

Find Deal

Wed, Dec 10 - Tue, Dec 16

9:59 am - 11:24 amISP-BOS

1h 25mnonstop

2:39 pm - 4:15 pmBOS-ISP

1h 36mnonstop

$514Cape Air

Find Deal

Fri, Dec 5 - Fri, Dec 5

12:40 pm - 2:14 pmISP-BOS

1h 34mnonstop

2:39 pm - 4:15 pmBOS-ISP

1h 36mnonstop

$520Cape Air

Find Deal

Mon, Dec 22 - Fri, Jan 2

Cape Air flights from Islip to United States

Our best Cape Air deals on Islip to United States flight tickets

Cape Air

Dec 5

ISP9:59 amIslip Long Island

1h 25m

BOS11:24 amBoston Logan Intl

Dec 5

BOS2:39 pmBoston Logan Intl

1h 36m

ISP4:15 pmIslip Long Island

$514

Find similar

Cape Air

Dec 22

ISP12:40 pmIslip Long Island

1h 34m

BOS2:14 pmBoston Logan Intl

Jan 2

BOS2:39 pmBoston Logan Intl

1h 36m

ISP4:15 pmIslip Long Island

$520

Find similar

Cape Air

Nov 25

ISP12:40 pmIslip Long Island

1h 34m

BOS2:14 pmBoston Logan Intl

Dec 1

BOS9:29 amBoston Logan Intl

1h 35m

ISP11:04 amIslip Long Island

$580

Find similar

Frontier flights from Islip to United States

Our best Frontier deals on Islip to United States flight tickets

Frontier

Nov 13

ISP6:37 pmIslip Long Island

13h 55m

1 stop

DFW7:32 amDallas/Fort Worth

Nov 17

DFW9:10 pmDallas/Fort Worth

19h 32m

1 stop

ISP5:42 pmIslip Long Island

$68

Find similar

Frontier

Nov 13

ISP6:37 pmIslip Long Island

2h 54m

MCO9:31 pmOrlando

Nov 20

MCO6:30 amOrlando

2h 37m

ISP9:07 amIslip Long Island

$85

Find similar

Frontier

Nov 9

ISP8:57 pmIslip Long Island

2h 55m

MCO11:52 pmOrlando

Nov 15

MCO8:00 amOrlando

2h 37m

ISP10:37 amIslip Long Island

$90

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Thu 11/13

6:37 pm-7:32 am

1 stop13h 55m

Dallas/Fort Worth

Mon 11/17

9:10 pm-5:42 pm

1 stop19h 32m

$68

IslipCharlotte

ISP - CLT

ISPCLT

Islip Long Island

Sat 11/15

4:58 pm-10:58 am

1 stop18h 00m

Charlotte Douglas

Mon 11/17

8:04 pm-5:42 pm

1 stop21h 38m

$68

IslipTampa

ISP - TPA

ISPTPA

Islip Long Island

Thu 10/30

11:40 am-4:00 pm

1 stop4h 20m

Tampa

Sun 11/2

7:00 am-11:00 am

1 stop4h 00m

$118

IslipTampa

ISP - TPA

ISPTPA

Islip Long Island

Thu 1/8

11:45 am-4:05 pm

1 stop4h 20m

Tampa

Sun 1/11

7:05 am-11:05 am

1 stop4h 00m

$119

IslipOrlando

ISP - MCO

ISPMCO

Islip Long Island

Wed 10/29

1:10 pm-4:00 pm

Nonstop2h 50m

Orlando

Sat 11/1

5:40 pm-8:10 pm

Nonstop2h 30m

$131

IslipOrlando

ISP - MCO

ISPMCO

Islip Long Island

Sun 10/26

5:25 am-11:40 am

1 stop6h 15m

Orlando

Sat 11/1

8:40 am-11:10 am

Nonstop2h 30m

$141

IslipFort Lauderdale

ISP - FLL

ISPFLL

Islip Long Island

Thu 11/20

6:56 pm-9:48 pm

Nonstop2h 52m

Fort Lauderdale

Thu 11/27

3:10 pm-6:01 pm

Nonstop2h 51m

$144

IslipFort Lauderdale

ISP - FLL

ISPFLL

Islip Long Island

Wed 12/10

11:50 am-2:44 pm

Nonstop2h 54m

Fort Lauderdale

Tue 12/16

8:10 am-11:05 am

Nonstop2h 55m

$147

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 12/5

9:59 am-11:24 am

Nonstop1h 25m

Boston Logan Intl

Fri 12/5

2:39 pm-4:15 pm

Nonstop1h 36m

$514

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 12/22

12:40 pm-2:14 pm

Nonstop1h 34m

Boston Logan Intl

Fri 1/2

2:39 pm-4:15 pm

Nonstop1h 36m

$520

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip to United States

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest Islip Long Island to United States flight route?

Fly from Islip Long Island to Orlando for the best Islip Long Island - United States flight prices

What cabin class options are available on Islip Long Island to United States flights?

There is only 1 cabin class available to choose from on Islip Long Island to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Islip to United States flights?

No. A direct flight is the cheapest option for a flight between Islip to United States.

Cheap Islip to United States flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip to United States

Best Price Found	$76
Fastest flight time	1h 25m
Direct flights	Every day
Airports in United States	5 airports

The best one-way flight to United States from Islip in the past 72 hours is $76. The best round-trip flight deal from Islip to United States found on momondo in the last 72 hours is $78.

The fastest flight from Islip to United States takes 1h 25m

Direct flights go from Islip to United States every day.

There are 5 airports near United States: Tampa (TPA), Palm Beach Intl (PBI), Boston Logan Intl (BOS), Fort Lauderdale (FLL), Orlando (MCO)

Search flight deals

When did momondo last update prices for flights from Islip Long Island Airport to United States?
Prices for flights from Islip Long Island Airport to United States were last updated today.
How many operators does momondo search for flights from Islip Long Island Airport to United States?
As of October 2025, there are 7 operators available to choose from for flights from Islip Long Island Airport to United States.
How old do you have to be to fly from Islip Long Island Airport to United States?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to United States.
What documentation or ID do you need to fly to United States?
The travel and health documents you'll need for your trip to United States may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United States. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Islip to United States?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Islip to United States is Airbus A320-100/200 (20.25% of total bookings). The next most popular plane models are Airbus A320neo (11.39%), Airbus A321neo (10.91%), and Airbus A321-100/200 (10.12%).

Best airlines flying from Islip to United States

Compare and see reviews for airlines that fly from Islip to United States with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $45	Free Cancellation	Rating 5.8 3,135 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $69	Free Cancellation	Rating 6.3 8,097 reviews	Search Spirit Airlines flights
JetBlue	PriceFrom $93	Free Cancellation	Rating 7.2 2,905 reviews	Search JetBlue flights
Delta	PriceFrom $117	Free Cancellation	Rating 7.9 7,977 reviews	Search Delta flights
Southwest	PriceFrom $163	Free Cancellation	Rating 8.0 4,238 reviews	Search Southwest flights
Cape Air	PriceFrom $497	Free Cancellation	Rating 9.3 39 reviews	Search Cape Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Islip to United States?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Islip to United States. momondo saves you time and could save you money on your trip.

Can I find flights from Islip to United States with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Islip to United States flights to just show those with flexible booking policies.

How can momondo help me find flights from Islip to United States?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to United States from Islip.

I’m not ready to book a flight from Islip to United States right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Islip to United States now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to United States and let you know when they change.

An easier way to manage your United States trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Thu 11/13

Thu 11/20

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Popular cities in the United States

Flights to New Yorkfrom $49

Flights to Los Angelesfrom $38

Flights to Miamifrom $49

Flights to Chicagofrom $49

Flights to Orlandofrom $63

Flights to Las Vegasfrom $38

Flights to San Franciscofrom $38

Flights to Washington, D.C.from $48

Flights to Bostonfrom $61

Flights to Atlantafrom $48

Flights to Dallasfrom $57

Flights to Seattlefrom $75

Cheap flights from Islip to the United States from $37

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip to the United States departing on 11/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Islip to the United States

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Cape Air flights from Islip to United States

Our best Cape Air deals on Islip to United States flight tickets

Frontier flights from Islip to United States

Our best Frontier deals on Islip to United States flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Islip to the United States that are best for you.

See travel insights to the United States from

How to get the cheapest flight ticket from Islip to United States

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest Islip Long Island to United States flight route?

Fly from Islip Long Island to Orlando for the best Islip Long Island - United States flight prices

What cabin class options are available on Islip Long Island to United States flights?

There is only 1 cabin class available to choose from on Islip Long Island to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Islip to United States flights?

No. A direct flight is the cheapest option for a flight between Islip to United States.

What is the cheapest airline that flies from Islip Long Island to United States?

Breeze Airways, Frontier, and Southwest are the most popular carriers operating from Islip Long Island to United States

What airlines fly to United States?

How many flights depart from Islip to United States on average per day?

As of October 2025, 8 flights take off from Islip and land in United States each day. The most common flight departure time for this route is 11:00AM, with 57% of daily flights taking off in the afternoon.

How many flights depart from Islip to United States on average per week?

As of October 2025, 56 flights take off from Islip and land in United States each week. The most common flight departure day for this route is Mon, with 21% of weekly flights taking off on this day.

Cheap Islip to United States flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip to United States

Best Price Found

Fastest flight time

Direct flights

Airports in United States

When did momondo last update prices for flights from Islip Long Island Airport to United States?

How many operators does momondo search for flights from Islip Long Island Airport to United States?

How old do you have to be to fly from Islip Long Island Airport to United States?

What documentation or ID do you need to fly to United States?

What is the most popular plane model from Islip to United States?

Best airlines flying from Islip to United States

Compare and see reviews for airlines that fly from Islip to United States with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Islip to United States?

Can I find flights from Islip to United States with flexible booking policies on momondo?

How can momondo help me find flights from Islip to United States?

I’m not ready to book a flight from Islip to United States right now. Can momondo alert me if prices change?

An easier way to manage your United States trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo