$28 Find Cheap Flights from Islip to the United States

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to the United States departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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1 adult, Economy, 0 bags

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Cheap Flights from Islip to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stop$200
Las Vegas
Las Vegas1 stop$200
Miami
Miami1 stop$214
San Francisco
San Francisco1 stop$425
Boston
Boston1 stop$260
Washington, D.C.
Baltimore1 stop$240
Denver
Denver1 stop$190
Fort Lauderdale
Fort Lauderdale1 stop$175
Seattle
Seattle2 stops$427
Atlanta
Atlanta1 stop$144
Tampa
Tampa1 stop$118
Houston
Houston1 stop$190
Honolulu
Honolulu2 stops$800
San Diego
San Diego1 stop$437
Philadelphia
Philadelphia1 stop$222
Los Angeles
Los Angeles1 stop$200
Las Vegas
Las Vegas1 stop$200
Miami
Miami1 stop$214
San Francisco
San Francisco1 stop$425
Boston
Boston1 stop$260
Washington, D.C.
Baltimore1 stop$240
Denver
Denver1 stop$190
Fort Lauderdale
Fort Lauderdale1 stop$175
Seattle
Seattle2 stops$427
Atlanta
Atlanta1 stop$144
Tampa
Tampa1 stop$118
Houston
Houston1 stop$190
Honolulu
Honolulu2 stops$800
San Diego
San Diego1 stop$437
Philadelphia
Philadelphia1 stop$222

Book Cheap Islip to the United States Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to the United States that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to the United States

Sun, Mar 1 - Wed, Mar 4
Frontier Logo
5:51 pm - 8:55 pm
ISP
-
MCO
3h 04mnonstop
Frontier Logo
6:00 am - 8:40 am
MCO
-
ISP
2h 40mnonstop
$91Frontier
Thu, Apr 16 - Fri, Apr 17
Frontier Logo
4:07 pm - 7:07 pm
ISP
-
MCO
3h 00mnonstop
Frontier Logo
6:30 am - 9:13 am
MCO
-
ISP
2h 43mnonstop
$98Frontier
Sun, Mar 1 - Wed, Mar 4
Frontier Logo
5:51 pm - 8:55 pm
ISP
-
MCO
3h 04mnonstop
Frontier Logo
6:00 am - 8:40 am
MCO
-
ISP
2h 40mnonstop
$101Frontier
Mon, Feb 23 - Fri, Feb 27
Frontier Logo
3:59 pm - 7:03 pm
ISP
-
MCO
3h 04mnonstop
Frontier Logo
5:01 am - 7:38 am
MCO
-
ISP
2h 37mnonstop
$102Frontier
Sat, Feb 28 - Wed, Mar 4
Breeze Airways Logo
11:50 am - 1:33 pm
ISP
-
RDU
1h 43mnonstop
Breeze Airways Logo
9:38 am - 11:10 am
RDU
-
ISP
1h 32mnonstop
$107Breeze Airways
Sun, Mar 1 - Tue, Mar 31
Multiple Airlines Logo
8:33 am - 11:41 am
ISP
-
MCO
3h 08mnonstop
Multiple Airlines Logo
6:30 am - 9:09 am
MCO
-
ISP
2h 39mnonstop
$107Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
Breeze Airways Logo
8:45 pm - 10:57 pm
ISP
-
CHS
2h 12mnonstop
Breeze Airways Logo
6:11 pm - 8:05 pm
CHS
-
ISP
1h 54mnonstop
$112Breeze Airways
Sun, Mar 1 - Tue, Mar 31
Multiple Airlines Logo
8:33 am - 11:41 am
ISP
-
MCO
3h 08mnonstop
Multiple Airlines Logo
6:30 am - 9:09 am
MCO
-
ISP
2h 39mnonstop
$113Multiple Airlines
Sat, Feb 28 - Tue, Mar 3
JetBlue Logo
1:29 pm - 4:39 pm
ISP
-
FLL
3h 10mnonstop
JetBlue Logo
7:15 am - 10:02 am
FLL
-
ISP
2h 47mnonstop
$177JetBlue
Sat, May 30 - Wed, Jun 3
JetBlue Logo
12:35 pm - 3:32 pm
ISP
-
FLL
2h 57mnonstop
JetBlue Logo
8:59 am - 11:50 am
FLL
-
ISP
2h 51mnonstop
$189JetBlue
Booking Insights

KAYAK's insights & trends for Islip to the United States flights

Get data-powered insights and trends into flights from Islip to the United States to help you find the cheapest flights, the best time to fly and much more.

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

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United States from Islip found in the last 72 hours was to Orlando, at $58 round-trip. The most popular route is from Islip (ISP) to Orlando Airport (MCO), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $58.

Can I save money by flying with a layover from Islip to the United States?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $274, prices are generally cheapest when you fly direct.

Good to know

Low seasonSeptember
Cheapest flight$32
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Islip to Orlando

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from Islip to the United States?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to the United States.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to the United States?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Islip to the United States is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to the United States?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Islip to the United States with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to the United States?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Islip to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to the United States

  • Looking for a cheap flight? 25% of our users found tickets from Islip to the following destinations at these prices or less: Orlando $88 one-way - $180 round-trip; West Palm Beach $127 one-way - $236 round-trip; Tampa $84 one-way - $172 round-trip

Reviews of the top 5 airlines serving from Islip to the United States

 
Need help choosing which airline to fly with from Islip to the United States? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
Breeze AirwaysOverall score based on 268 reviews
8.7Crew
8.3Boarding
8.2Comfort
6.7Food
6.6Entertainment
Airline reviews

Lost my luggage and terrible experience with customer service trying to track it down

2.0 MediocreAnonymous, Feb 2026
PWM - RDU
Read more Breeze Airways reviews

Lost my luggage and terrible experience with customer service trying to track it down

10 hour delay with minimal updates. Couldn’t leave terminal and then ended up on redeye with a dirty broken plane. It is literally impossible to reach customer service via gate agent, app, phone, text or email.

I thought that I had pre-purchased carry-on luggage and was surprised when I tried to check in that I did not have it.

Flight departure was 90 min delayed, and the boarding experience was confused, stressful, and generally poor. Additionally, the wifi on the plane was malfunctioning for all but the final 15 min of the flight into ILM.

Great experience and In love flying in and out of Provo airport

You get what you pay for. It’s like a bus but flying. No frills, no snacks. Leg room was fine, boarding was good.

Overall good. Plenty of legroom and fairly comfortable seats. No issues with capacity and the overhead been even though most people brought several carry-ons on. I don’t think Breeze really enforces the pay for a carry-on rule.

Surprised at how much I enjoyed Breeze. Paid for the Nicer upgrade which made it closer in price to a flag ship carrier but with more comfortable seats and much more leg room. Crew was polite and since we brought our food no loss there. Would make the point that the ‘have to pay for a carry-on is BS’. Most people did not and had several. Still was plenty of room in the overheads.

Comfortable seating, adequate space available, nice to have USB port, polite crew.

My experience is typically great with Breeze. This trip wasn’t any different.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

My flight from Denver to Minneapolis was excellent. My flight from Minneapolis to Denver was one of the worst I flights I have ever experienced. I had a window seat, the gentleman in the middle seat was morbidly obese and SW should have made him purchase two seats. His elbow dug into my arm most of the way even after I asked to please be careful. I was literally squashed between the him and the window with no wiggle room. The plane was full so it was not possible to ask for a different seat. I realize I should have complained to the flight attendant but I didn't feel anything could be done to rectify the situation. I fly SW often, I will continue to do so as this was my first negative experience.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

Flight attendants very hospitable and friendly. Pilot flew a smooth take off and landing.

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled. No snack or drink on this flight.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

Flight was smooth. We boarded early and left Grand Rapids about a half hour ahead of schedule. We then arrived in Lakeland about 40 minutes early. Flights attendants (3) were welcoming and pleasant. Wish we would have at least been offered to buy a bottle of water. No beverage service at all.

I really liked the young man who checked me in and took my bags! He was so kind and was very helpful! I told my sister about the great service and him and she said that is why she flies Avelo Air.

The flight was delayed by a lot and the seats are pretty tight

Surprisingly was one of the better flights I’ve been on

Short 2-hour flight, we took off on time, ETA was earlier than stated, no interaction needed with stewards, no food, no entertainment on such a short flight.

Avelo provided exactly what I expected. They are a low-cost option with no frills but the experience was comfortable and the staff was great! I will be using them in the future for trips when cost is a priority for me.

Expect nothing and you will be fine. Seats are crammed.

Terrible landing. Uncomfortable seats. Great cabin crew-helpful and pleasant!

Tight fit in middle seat but OK for short flight. Crew was more interested in talking to each other than helping passengers - strickingly dissappointing. DAB is a great airport. New Haven sucks! Excellent value for the .

Avelo is definitely a budget airline and you get what you pay for. The plane was packed and the seats were not particularly comfortable. Staff was very nice and both of our flights were on time. The one thing I wish I had known was that the staff does not show up at the airport desk to check your bags until two hours before the flight. We had a 4:30 flight and had to check out of our hotel at noon. Since we have lounge passes we planned to check our bag, go through security and hang out at the lounge until we had to board. But because we could not check our bag until 2:30, when the staff showed up, we could not go through security and access the lounge. Passengers with boarding passes and carry on luggage would not have this issue. I might fly Avelo again but would only do carry on or plan to get to the airport no sooner than two hours before check in. And I would not recommend a long flight on Avelo since there is no food or entertainment and the seats are not comfortable.

Automated scanning was slow and somewhat haphazard. Too many people were unfamiliar with the tech and were forced to learn on the fly. The hands off approach of the gate staff made it more uncomfortable. This needs work. Overall the flight and cabin crew were excellent.

Crew were fantastic and so catering and wonderful! Full score for the entire crew!

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

First time flying with JetBlue and never again. I went to the counter to request meet and assist because I'm 74 and my wife is 79. I walk with a cane and my wife is handicapped and has her own wheel chair. I told the agent that my wife and luggage was at the entrance door. The ticketing agent said to me that they don't offer meet and assist. I need to bring them our luggage and then go back and get my wife in order to get my boarding pass. As I went back to get my luggage a Southwest agent along with a TSA agent recognized the situation and came over and took my wife and luggage to the JetBlue ticketing counter alongside the line and told the JetBlue agent to issue to take our luggage as soon as they could.

Flight was fine, price was good but food onboard was abysmal. I was on there for breakfast and lunch and dinner 845am EST to 845pm GMT and all I got was a yoghurt parfait, fruit and a piece of cake. Later snacks included an ice-cream brownie and a pizza twist. I was hungry by the time I landed and the airport amenities were closed. Not happy.

Not a pleasant experience, service was poor. Didn't like it

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

Worst flight experience ever flights canceled. JetBlue told us just did not even bother standing in line to come back in one and a half hours then without any information we had to go pick up all of our luggage and spend over $2000 in accommodation just to get home. JetBlue said that the next flight available for us to get home would be three days later. Absolutely absurd hasn’t offered to give us any compensation do not fly JetBlue horrible company. They said it was based on the weather and the weather is great in all locations that we would’ve been flying to total hoax. I think it’s a conspiracy theory.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

Everything you need to know for your flight from Islip to the United States

Information on your arrival and departure airports