Find cheap flights from Islip to Portugal

Find cheap flights from Islip to Portugal

Round-trip
Economy
Islip (ISP)
Portugal
Mon 3/8
Mon 3/15
Any month
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Top tips for finding cheap flights to Portugal

  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be January, November and December. The cheapest month to fly to Portugal is January.

FAQs - booking Portugal flights

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Top airline flying Islip Long Island to Portugal

Scores according to KAYAK customer reviews

7.2
American Airlines
Overall score based on 45,185 reviews
7.5
Boarding
7.1
Comfort
7.8
Crew
6.8
Entertainment
6.7
Food
Airline reviews

Cons: "The attendants attitude."

Cons: "I think boarding from rear would facilitate faster boarding And eliminate people blocking Aisle ( standing in aisle and digging In their carryons preventing people From finding their seats further down the aisle. Also people with a connecting flight Pressed for time on their next flight Departure...Should be allowed to deplane first..so they don't miss their next flight."

Cons: "50 minute wait for a gate to deplane. How could there not be a gate at 10:30 pm? It’s not like our arrival was a surprise!?"

Pros: "Great"
Cons: "Nothing"

Pros: "When my original flight out of Roanoke was delayed so much that I was going to miss my connection an employee went above and beyond to find me a different flight to ensure I got home that day."
Cons: "The first AA employee basically told me I was out of luck and there was nothing he could do, which was incorrect and he just didnt want to do everything he could to help me like the other employee eventually did."

Cons: "Didn’t make the flight because of previous flight was delayed"

Pros: "The staff was fantastic. Very helpful."
Cons: "Flight was delayed twice causing us to miss our layover. The only way they initially could correct the issue was by booking us a flight 5 days later. Finally found a helpful person at the gate after calling American Airlines and getting no help. We lost day of our trip, but it’s better than 5."

Cons: "No entertainment or WiFi at all"

Pros: "Nothing"
Cons: "Delays. Unexplained."

Cons: "Very confused as to why I am receiving messages regarding confirming flight and post flight review when I did not purchase this flight. I watched it, did NOT book it. I should not be charged for it."

Pros: "Very cool touchscreen players on the back of each seat."
Cons: "The lights were on 90% of the flight...a night flight."

Cons: "Broken seat headrest No in-flight entertainment except small screen rows away Reading lights didn’t work properly Flight attendant call signal beeped for first 2+ hours and no one could fix"

Cons: "Flight cancelled and had to travel 60 miles at my expense to a different airport to get another flight same day"

Pros: "30 year old plane! Needs to retire this aircraft and move into the 21st century!"
Cons: "No outlets no individual monitors"

Pros: "That it actually happen. Poor communications from British Airways and American Airlines."

Pros: "We where late boarding, jet didn’t have fuel, we had delay after delay. This flight is never on time. every time I have taken this flight I am delayed. Also getting into charolette, we always spend at least 20 min on the tarmac"

Cons: "Instead of flying MIA-EWR I was sent to ORD and then to EWR arriving at 11:00pm"

Pros: "Entertainment selection"
Cons: "Minimal leg room Not allowed to bring bag aboard. Told bins were full even though there was AMPLE Space in the overhead in my row. Onboard crew unhelpful. Baggage intended for carry on got “temporarily” delayed 45 min additional at baggage claim. wait was 1 1/2 hours."

Pros: "The crew was very good. The made sure we were informed and helped get people rebooked."
Cons: "We were delayed by about 2 and 1/2 hours. Which I get no one can control a maintenance issue, just made for a hectic day"

Cons: "Boarding at Terminal 3 gate A8 was slow and a single line makes for a lengthy process."

Pros: "We arrived safely and so did our luggage."
Cons: "PHL-Lisbon plane left 3 hours late due to CATERING problem. Seats were uncomfortable and food was awful. Lights and entertainment controls at my seat didn’t work."

Pros: "Felt very quick, I supposed after a 15+ hour flight from Sydney."
Cons: "As always tight seats."

Pros: "Snow ruined flight. Crew was great."
Cons: "No entertainment with this flight. Cookies good."

Cons: "The fact that my original seats were not given. The other issue was that Alaska wasn’t my airline but American was. They didn’t even tell me until I got to the gate, moved over to another and then got transferred over to my gate."

Pros: "Crew did their best!"
Cons: "Our flight was delayed over 3 hours. Other Advantage members have already received bonus miles for their inconvenience. I am also an Advantage member and have not received bonus points and am unable to get ahold of anyone."

Cons: "The flight leg PHL-LIS was the most unconfortable transatlantic trip I ever experienced. The plane was small, tight and no head support made this the worst transatlantic flight of my life, easily comparable to any low cost airline."

Pros: "Getting out of the plane! and the landing was very good."
Cons: "Bad service no entertainment besides a one very childish movie. My tray stayed with me the whole flight, I had almost to beg to take it and never s flight attendant seem happy, pleasant or even profissional. The landing by the pilots was amazing."

Pros: "Not much."
Cons: "There are NO ENTERTAINMENT, and I had two flights that were more than 5 hours each. It was not operated by British, it was actually American Airlines."

Pros: "American Airlines was great!"
Cons: "Finnair changed my flight to American Airlines (which I don't mind) but never notified me and made me go through hoops to get the changed record indicator."

Pros: "Flight was on time, staff was friendly and boarding was organized."
Cons: "I'm a small person (5'-2", 105lbs) and I didn't have room to breathe in that tiny little seat."

Pros: "Crew and promptness"
Cons: "No entertainment for each seat. No cellphone charger."

Pros: "The flight had a delay of 4 hours in Philadelphia. I missed the appointment in Lisbon for which I was flying in the first place. Furthermore, I had purchased the ticket with the intent of flying with British Airways and found myself in a charter from American Airlines. I wish to be compensated for this mistake. Thank you"

Pros: "Boarding was fast and easy gate agents were awesome."
Cons: "Older plane. Very uncomfortable"

Pros: "Flights were on-time, planes were clean/newer, snacks were good."
Cons: "Their boarding/de-boarding process was quite inefficient - they have boarding zones, but then you just go to a shuttle and it's a free for all at the plane."

Pros: "The space"
Cons: "The agents and flight attendants were very unfriendly. You could tell that because I was of a different nationality that this was a problem."

Pros: "Even though flight was full, everything just flowed - no issues."
Cons: "Video was for cabin and not by seat"

Pros: "There were no unexpectedly positive surprises. There was nothing that stood out as a positive experience beyond status quo"
Cons: "The airplane was older technology on three of the four legs. No charging outlets, or personal entertainment except on one flight. They also lost our bag, so that really stinks. They Gate checked my bag, and didn't give me a ticket. I even told them that I'd prefer a ticket, in case something goes wrong, and they replied 'oh no worries, it'll be up in baggage claim". I looked him squarely in the eyes abs I said, OK I'll wing it, but I trust you! He said no worries."

Pros: "I booked the flight specifically because it was advertised and booked on British Airways, which is considered a nice international airline to fly. The flight was swaped to American Airlines, and I was put on an international flight that was archaic, I would have been better off flying a prop plane from the 1970's."
Cons: "I booked the flight specifically because it was advertised and booked on British Airways, which is considered a nice international airline to fly. The flight was swaped to American Airlines, and I was put on an international flight that was archaic, I would have been better off flying a prop plane from the 1970's."

Pros: "Crew was nice"
Cons: "Someone opened nail Polish on the plane and I wish the flight attendants would have addressed it because it was horrible."

Pros: "Food, Service, overall feeling of flight and crew"
Cons: "Leg room"

Pros: "Flight crew very welcoming, flight was pleasant."
Cons: "Seating a bit tight. Didn't offer any snacks only ice water."

Pros: "Checking in was a breeze. Flight crew was pleasant."
Cons: "Extra baggage fees. Older plane missing some of the common amenities like wifi and individual tvs. The cabin Tv was small."

Pros: "Great flight crew."
Cons: "Being charged at the ticket area for one bag and finding out at the gate it is complimentary."

Pros: "The flight was smooth and the coastline views were amazing."
Cons: "No in-flight entertainment. Poor quality sandwiches."

Cons: "flghit Porto/Lisbon 1 hour delay"

Pros: "The flight went very well, and the crew was helpful. The flight was very very cold. So it wasn't very comfortable. Felt like the temp could have been brought down just a bit."

Pros: "The entire crew pre-boarding and in flight were extremely friendly and nice and seemed to have a good raport with each other. The last time I flew, I took Frontier from LGA to Denver and the staff on Frontier's flight were very rude and dismissive towards passengers. It was so refreshing to fly American Airlines and be greeted with warmth and professionalism by the staff!"
Cons: "The only downside to the flight was the lack of music/tv."

Pros: "See above."
Cons: "See above."

Pros: "The crew at least made an attempt to be friendly"
Cons: "The seats were extremely uncomfortable the flight was delayed, and most importantly I booked my flight for san Francisco (sfo) and got sent to san Diego and had to book a $130 bus ticket and spend 14 hours on a bus."

Read more about American Airlines
COVID-19 information

Safety measures for airlines flying from Islip to Portugal

Airlines flying from Islip to Portugal 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 from Islip to Portugal

Mandatory masks

Masks required on board, masks provided on flights from Islip to Portugal

Social distancing seating

Middle seats unavailable to book on flights from Islip to Portugal

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Islip to Portugal

Book cheap flights from Islip to Portugal

Recent round-trip flight deals

7/19
Mon
1 stop
American Airlines
9h 40m
ISP - LIS
9/13
Mon
1 stop
American Airlines
11h 10m
LIS - ISP
7/20
Tue
1 stop
American Airlines
9h 40m
ISP - LIS
9/14
Tue
2 stops
American Airlines
14h 55m
LIS - ISP
6/21
Mon
1 stop
American Airlines
9h 40m
ISP - LIS
8/23
Mon
1 stop
American Airlines
11h 10m
LIS - ISP
8/25
Wed
1 stop
American Airlines
17h 26m
ISP - LIS
8/29
Sun
2 stops
American Airlines
14h 55m
LIS - ISP
6/12
Sat
1 stop
American Airlines
9h 40m
ISP - LIS
6/21
Mon
1 stop
American Airlines
11h 10m
LIS - ISP
4/16
Fri
2 stops
Multiple Airlines
19h 13m
ISP - LIS
4/18
Sun
2 stops
Multiple Airlines
19h 52m
LIS - ISP
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Recent one-way flight deals

7/18
Sun
1 stop
American Airlines
9h 40m
ISP - LIS
6/5
Sat
1 stop
American Airlines
9h 40m
ISP - LIS

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