Find deals on international flights to Islip

Find deals on international flights to Islip

Round-trip
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Washington (WAS)
Islip Long Island
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Good to know

Low season

January Best time to beat the crowds with an average 11% drop in price.

High season

December Most popular time to fly with an average 24% increase in price.

Average price round-trip

$363 (avg. price over the last 2 weeks)

Good deal round-trip

$97 or less

Good deal one-way

$68 or less

FAQs for booking Worldwide to Islip flights

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Top airlines flying Worldwide to Islip Long Island

Scores according to KAYAK customer reviews

7.2
American Airlines
Overall score based on 45,050 reviews
7.5
Boarding
7.1
Comfort
7.8
Crew
6.8
Entertainment
6.7
Food
Airline reviews

Pros: "Nothing"
Cons: "You were late per usual. I wouldn’t have a job if I operated like you. It would be nice if there was some accountability"

Pros: "Crew fine. Plane ok. Legroom better than usual."
Cons: "Re-routed mid flight and forced delays. AA has been awful all holiday weekend."

Pros: "MIA to EZE we got the priority seats and it was worth the extra expense."
Cons: "Honoring paid reservations. Our flight was cancelled and rescheduled 4 times within the last few days. Communication. No one emailed me or called me to give me options or to even tell me they were kicking me out"

Cons: "British Airways but the flights were operated by American Airlines who I've always had terrible experiences with. This was no different. TOTAL NIGHTMARE"

Pros: "New plane"
Cons: "Boarding, no gate changes, no flight delays"

Pros: "WiFi was fast, entertainment was very good."
Cons: "Aesthetically the plane was a disaster. Broken tray table in my exit row seat. Poor updates regarding why flight was delayed. Boarding process was poorly managed by staff, who were more interested in cracking jokes with each other than doing their job. I find that unacceptable, given the situation."

Pros: "Service was American average. Not necessarily a good thing, but it could have been worse."
Cons: "Seats with more leg room required for people over 6' tall."

Pros: "Everything"
Cons: "Excellent"

Pros: "Game of Throne as a boxset"
Cons: "if my return flight was by AA rather than another operator"

Pros: "The flight crew was pleasant!!!"

Pros: "It s american!"

Cons: "When I made the reservation the code indicated that we would be able to purchase food on the flight. When I asked, the flight attendant said, nope, only choice is a pack of two cookies. We were starving on the 3.5 hour flight."

Pros: "Very helpful crew."
Cons: "Too often the video screen I’m given doesn’t charge up and it has to be replaced mid flight. This happened again during this flight when 2 screens didn’t charge and had to be replaced before the movie ended. The crew was helpful, but this problem is annoying."

Cons: "No personal entertainment for an international flight."

Pros: "It was ok. Got there safe and sound. That's what counts."
Cons: "N/A"

Pros: "Boarding process was fast and organizedfor the most part(people for lines before they are called)"
Cons: "No food or entertainment, but I do understand given the duration of the flight!"

Cons: "Turbulence throughout the entire flight, couldnt sleep, and they didnt offer any snacks because of this"

Pros: "Crew"
Cons: "Delays departing delays connecting delays delays delays. Flight attendants were very pleasant."

Pros: "Flight was on time and not cancelled."
Cons: "AA does not consider USPHS Officers as military despite beer mg defines as such in the Servicemember Civil Relief Act. All to make a dollar."

Pros: "Nothing"
Cons: "The fact that luckily we checked the night before and had to drive to philly to catch flight"

Cons: "Lost the flight because of TSA who didn’t care I was missing the flight and gate personnel who didn’t allow me to get on board while the jet was still there. A nightmare and my luggages are still somewhere..."

Pros: "One of the flight attendants was nice."
Cons: "AA is now trying to save money (presumably) by doing like Delta: forcing half of us to connect in Charlotte. Unfortunately, the Charlotte airport is not ready to accommodate so many people. The airport looks like it is being renovated, which is fine, but there is no tape/cones to mark off the renovated areas from the walkways. You literally walk through dirt and construction sites. I didn't even think that was legal in the US?! Anyway, maybe it will be worth it once the renovations are complete, especially if AA is going to use it as a hub."

Pros: "Nothing special"
Cons: "BWI check-in crew is not friendly, not related to Japan Airline."

Pros: "Not a thing plans got changed I had back surgery"
Cons: "That my plans got changed"

Pros: "Boarding was fast and smooth. The flight was great, seat was comfortable."

Pros: "The boarding process was quick and efficient."
Cons: "This plane did not feature TV at your seat. Only the overhead TV"

Cons: "For some reason they changed my seat."

Cons: "Inadequate overhead baggage space."

Pros: "Crew is usually very nice"
Cons: "Customer service is horrible. No tvs on the seats, no entertainment shown no options for snack except hummus privacy is no concern to American"

Pros: "Very nice in flight staff"

Cons: "Wifi was spotty at best. No charging options"

Cons: "Flight was cancelled and we were never notified!"

Cons: "Nothing"

Pros: "Puntuality in both fly's"

Cons: "More options with first class food"

Cons: "Plane was delayed due to a mechanical in Charlotte (Old USAir Airbus) then ground stop due to weather after it finally got to Baltimore. Loaded us up and then deplaned us. They brought out water and sodas while we waited. Then reboarded and got into Charlotte about three hours late. Lots of very unhappy people. They passed out 800 numbers to rebook. A lot of people missed connections."

Pros: "Wonderful"
Cons: "Great"

Pros: "Crew was as communicative as possible about the delay process. Answered questions and suggested solutions for travelers who were affected by the delay."
Cons: "The maintenance crew delayed the flight by over an hour because they were not able to get a technician to the plane until an hour after the scheduled takeoff time."

Pros: "Nothing"
Cons: "Everything"

Pros: "Everything was perfect."
Cons: "."

Pros: "Nothing"
Cons: "The worst airline. Poor customer setvice and every single fligt was delayed and they offered nothing."

Pros: "Boarding was pleasant, flight attendant was very nice. Served several snacks and choice of drinks."
Cons: "no entertainment"

Pros: "The flight was cancelled and they refused to pay for my hotel and food. They finally paid for the hotel but not food."

Pros: "Ended up leaving earlier than scheduled."
Cons: "American Airlines holding open seats until right before the flight leaves."

Pros: "Flight was fine"
Cons: "Gate in Miami wasn't ready and we sat for 45 minutes until they opened a gate for us to deplane. Ridiculous."

Pros: "All"

Cons: "The first leg was cancelled and no one maee me aware of this and no additioaal flights were placed for this leg of the flight.. Kayak said it is British Airways fault and of course BA stated it was Kayak's fault. I donkt think i will be using Kayak anymore, becuase of the way this matter was dealt. I am also planning to contact bebber businness bureau for this as well."

Cons: "Diverted to OKC due to weather in Dallas, missed connecting flight and they couldn't get us on the last flight out"

Cons: "We arrived at 3pm for our 545pm flight. Once we arrived at the gate, we were notified the aircraft would be coming in late (10-15) due to tech issues. The AA staff was aware the plane had mech issues and decided to board us anyways. After 45 mins of sitting and waiting around in our seats, the pilot preceded to ask us to deplane the aircraft. AA gave us a lousy food voucher and booked us on the next available flight to Miami which wasn't until 1145pm! AA crew/staff handled the situation in a disappointing manner. The AA crew at the gate spoke in a condescending manner as if were young kids! I was appalled by that! I will not be flying AA anytime soon!"

Cons: "Seats were made of hard plastic and did not recline. No radio or TV. No free food offered. Waited hours as they had to locate a mechanic, repair an armrest and then do the paperwork to prove that he had finishes the armrest!"

Cons: "Just a bit delayed"

Pros: "The price was cheap"
Cons: "The seats were miniature, you dont get any food/snack included, it took 1 hour to get our baggage, it took 49 minutes to get off of the plane, the pilots were late on the flight there, the plane was delayed 1.5 hours on the way back, you have to not only pay for the flight but then you have to also pay for your seat. I will never fly frontier again."

Pros: "Inexpensive flight"
Cons: "Boarding , they didn’t register my boarding pass"

Pros: "Flying frontier was excellent for a short trip. Took off early, landed early, very pleasant crew, boarding was smooth, not a problem with anything at all!! Will definitely fly them again when possible."
Cons: "Nothing that I didn’t like for a budget airline."

Cons: "The flight was delayed three times."

Cons: "Everything, it was late not organized crew was not the nicest. Never again. The delay was only 5 h"

Pros: "Cost- this was round trip flight. Both were fine. Although further from my house ISP was easy to get to, easy to check in/security lines non existent and food service while waiting was sufficient. I had booked thru KIWI for 1st time and was concerned when they could not auto check me in/send me boarding pass to print due to computer issues. I like to check in before hand , have boarding pass in hand but my counter check in was fast and easy with no additional fees. Clean new planes"
Cons: "Nothing. Knew what low cost flight required, packed accordingly to avoid extra fees, but would have paid if that did not work out."

Pros: "Overall my experience to Orlando and from Long Island was great the crew member were funny and welcoming. They acted professionally and were very friendly. The flight was great since we arrived one hour before our normal time. The economy seats don’t recline it I found it comfortable for our flight. I had the same experience from Orlando back to Long Island."
Cons: "No Wifi or screen that tells you where you are and arrival info."

Pros: "Price was excellent. Crew was outstanding. Upgraded seats were roomy and comfortable."
Cons: "Both legs of the trip had two hour delays. Boarding was unorganized. Gate staff was not pleasant. Some food and drink items were not available."

Pros: "airplane cabin was clean."
Cons: "boarding was late and they didn't even say anything. no apology or anything. It was also hard to hear announcements over the PA system"

Pros: "Affordable, and the seat though firm are surprisingly comfortable. Crew very friendly"
Cons: "Charge for everything."

Pros: "Plane was clean. Everything was good. Don't usually fly your airline. Plane was new."

Cons: "The plane took off over an hr late due to lack of heat and the pilot had to reboot the system, once the plane finally took off the flught attendsnts then explained they would start the beverage service but were iut of most options and we could get ready to pay for what was left, maybe if they offered complimentary beverages at that point would've been a nice touch."

Pros: "You pay for what you get. Least comfortable flight but also cheapest."
Cons: "Seats"

Pros: "Nothing."
Cons: "They lost my bag. Told me it would be there the next night...it wasn’t and they didn’t know where it was. Told me they’d reach out with updates...they didn’t. I had to call to find out it was in a different city from where I was going or where I live. Told me it would be on the next flight out in the morning...it wasn’t. Then did absolutely nothing to compensate me for this experience."

Cons: "Was unable to make it"

Pros: "The terminal was empty. Plenty of seats. Boarding doesn't take long. Arrival at ISP is nice because it is small and empty."

Pros: "Loved it. My new favorite airline and airport."
Cons: "Not a thing"

Pros: "The staff was pleasantly and the boarding process was on time and so in a speedy manner."
Cons: "Having to pay 2.99 for a cup of beverage, at least give me the can or small bottle."

Pros: "Whole frontier team was very friendly and helpful"
Cons: "The lack of food, but that’s what you get for a budget airline. The round trip cost was well worth the lack of food"

Pros: "Liked the price. Liked the service."
Cons: "Hated the seats. Very uncomfortable."

Pros: "Great convenience, new plane, PRICE!!! Arrived a half hour early!!"
Cons: "Absolutely nothing!!!"

Pros: "Better looking plain than the last Frontier one, Pilot was more smooth at take off and landing."
Cons: "The boarding crew were nasty and the gentleman was more focused on looking sexy in his heels and long nails. Why do we pay for a flight and then for a seat? Why not fly standing and not pay extra? That's a funny way to just take more money out of our pockets. Have us pay for basic seats and then have the ability to upgrade."

Pros: "Nothing except the crew."
Cons: "Where to start? Messed up my TsA pre-check which almost cost me to miss flight, no almenities on board, tray table shorter than my iPad. This flight and airline is a joke, never again."

Pros: "crew was very friendly"
Cons: "plane and bathrooms were dirty stinky and old worn down! most uncomfotable seat ever!! i was sore before we pulled away from terminal! fold down tray was the size of a cell phone!"

Pros: "I don't think we shouk pay for soda."
Cons: "Every thing else was fine"

Pros: "I have to say that the flight attendants were very nice and attentive! Much much better then the attendants from AA! We left on time and arrived early at out destination! Yes you guys charge for everything and the planes are old and not much seat leg room, but its expected based on the price! Over all a great flight for our money! We had the same experience on our round trip to FL!"

Pros: "Better on/off ramps at Trenton airport."

Pros: "They cancelled the flight 4 hours beforehand and never told anybody.i only found out when I got to the airport!!! I then had to drive to Orlando,get hotel and wait for the next flight this evening at 5:30pm. I will never fly this airline again!!!!!!!!"
Cons: "EVERYTHING!!!"

Pros: "The flights were on time for the most part. The first arrived very early, the second a few minutes late. I liked the tininess of the terminal. It made for easy security and boarding."
Cons: "I didn't like the extra charges for any type of baggage and to reserve seats. That should be rolled into the ticket price. It actually cost almost $100 more per round trip ticket than advertised."

Cons: "crowded seats, no room for my knees, since the kids behind us had little room they were constantly kicking our seats and crying, the aisles were too narrow, the seats were uncomfortable, we did not understand that we had to pay an extra chg for our seats which should be part of the original charge (that's ridiculous!), had to pay an unbelievable extra chg for something to drink, and then if that wasn't bad enough, we had to wait for over an hour for our luggage! Never again will we book Frontier!"

Cons: "Flight delays"

Pros: "Frontier is inexpensive for a reason. They offer zero perks and charge for everything in addition to you simply sitting on the flight. Extra costs: baggage, a carry on, anything but water on the flight costs money, selecting a seat assignment costs money, no movies or TV on the flight, etc. You want to keep it cheap? Fly with them but expect zero additional comforts."

Pros: "Price was o.k."
Cons: "Leg room not enough. simple water is not offered."

Pros: "The Fare"
Cons: "Waiting 1 hour for a gate to open in Chicago"

Cons: "Flight was cancelled at 2 am. Was told flight was on time at 855 pm. Was then delayed to 11:30. I am not receiving flight compensation emails at this time. This was horrible. The voucher they gave us for a hotel did not work. HORRIBLE EXPERIENCE."

Pros: "Fast, efficient and friendly service."

Pros: "Airplane was new. Crew was nice"
Cons: "Late departure. No information from boarding staff."

Pros: "Wish seats reclined. Didn't know you had to pay for drinks. Other than that it was fine."

Cons: "Ha ha! The flight hasn't even left yet. Delayed 4 hours with no attempt to compensate passengers for the inconvenience. We were given $50 toward future travel on this godforsaken excuse for an airline - valid only within the next 90 days. No serious offers to re-book, cab vouchers, or accommodations given. A real disgrace."

Cons: "The seating was horrible. In their defense I'm 6 foot three 230 pounds. However, the seats were like rumble seat with a thin cushion on them that did not move."

Pros: "The price of the ticket. We always take a checked bag and never a carryon so that charge didn't matter to us. No problems with check in and flights were right on schedule. Already booked another flight to same destination."
Cons: "Wish there was more day and time choices. Wanted a Diet Coke and the were out."

Pros: "NA"
Cons: "There's no wifi. Rushed to leave early, arrived early and had to wait for over 50 minutes to get to a gate."

Cons: "Surprise! You went through the effort to pack 4 days of clothes in a carry on to expedite your travel through connections. What you didn't know is you'll be penalized anyway, to the tune of $40. Some airlines offer the courtesy of telling you there's a fee, and allow you to prepay a reduced fee. So, what's up Frontier?"

Pros: "Cheap fare"
Cons: "The remodeled interior puts the seats closer together from front to back and don't recline. That also limits the size of the tray table, which is tiny. Even as a tiny, short person, it was uncomfortable. For anyone of normal stature it would be torture. Paying for a "better" seat appears to provide very little if any added benefit, just keeps your party together. There is no entertainment, movies, music, or wifi so bring your battery pack charger. There is only expensive junk food to eat. My only option on my coast to coast flight was a red eye. So you arrived just wiped out. So if you do this to save money, in my overall assessment, it's just not worth it. I'll never do it again."

Pros: "We had the nicest stewardess that I think I've ever had."
Cons: "The checkin lines were extremely long despite pre-checking."

Pros: "Wouldn't change anything about this flight . It was on time. Flight attendants were very pleasant and attentive. Flight was smooth. Passengers were friendly."

Pros: "It was a short flight."
Cons: "Our plane was delayed. Upon the arrival of the plane that we're boarding, I'm not sure if the crew had time to do a quick sweep. Then I noticed on my seat a soiled stain on the seat which looked like a bodily fluid. The flight attendant immediately cleaned it up with some wet napkins. But I'd suggest next time that they wear gloves and disinfectant sprays when there are stains on the seats because you don't know what it is."

Pros: "This flight was a good value and the crew was very nice."
Cons: "Feels like we are being nickel and dimed having to pay for a regular seat assignment. What happens if I don't pick one and don't pay the extra charge? I didn't want to chance it...."

Read more about American Airlines
COVID-19 information

Safety measures for airlines flying to Islip Long Island

Airlines flying to Islip Long Island have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights to Islip Long Island

Mandatory masks

Masks required on board, masks provided on flights to Islip Long Island

Social distancing seating

Middle seats unavailable to book on flights to Islip Long Island

Pre-flight testing

Testing for antibodies, testing for symptoms for flights to Islip Long Island

Book cheap flights from Worldwide to Islip

Recent round-trip flight deals

2/13
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nonstop
Frontier
2h 40m
PBI - ISP
2/20
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nonstop
Frontier
3h 02m
ISP - PBI
1/29
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2h 30m
MCO - ISP
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2/14
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2h 42m
MIA - ISP
2/18
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3h 03m
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2/27
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2h 40m
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3/2
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2/1
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2h 30m
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2/8
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2h 54m
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3/11
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2h 52m
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2/11
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3/2
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American Airlines
4h 29m
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4h 07m
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2/21
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12h 30m
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6h 15m
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4/14
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American Airlines
17h 09m
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4/15
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American Airlines
14h 28m
ISP - BWI
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Recent one-way flight deals

2/13
Sat
nonstop
Frontier
2h 30m
MCO - ISP
1/30
Sat
nonstop
Frontier
2h 40m
PBI - ISP
2/11
Thu
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2h 42m
MIA - ISP
1/30
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4/5
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2/16
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2h 40m
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2/11
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21h 54m
MIA - ISP
2/5
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Multiple Airlines
17h 43m
CLT - ISP
2/7
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Frontier
23h 41m
BWI - ISP
2/11
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11h 37m
FLL - ISP
2/1
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30h 24m
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13h 49m
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American Airlines
3h 52m
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11h 13m
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2/22
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American Airlines
5h 35m
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