Cheap flights from Islip (ISP) to Lisbon (LIS)

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How to find the cheapest flight from
Islip (ISP) to Lisbon (LIS)

All the information you need to plan the best ISP to LIS flight in 2021: compare Islip to Lisbon flight prices with the expected peak season, weather and rainfall in Lisbon.
When is the cheapest time to fly from Islip, New York to Lisbon (ISP - LIS)?

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 Lisbon as you normally would.

How far in advance should I book a flight from Islip, New York to Lisbon?

To save on the cost of your flight from Islip, New York to Lisbon, book at least 61 days before your planned departure. Booking around this time can save you about 30% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $798 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $941.

Cheap flights from Islip to Lisbon in November, December 2021

The best prices found for ISP to LIS flights for November, December
20 Dec - 4 Jan
$2,255pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
American Airlines
   
2 STOPS
ISP
Islip Long Island
20 Dec - 4 Jan
$2,713pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
American Airlines
   
2 STOPS
ISP
Islip Long Island
25 Dec - 4 Jan
$2,904pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
American Airlines
   
2 STOPS
ISP
Islip Long Island

Islip Long Island to Lisbon 2022 flight deals

Cheap flights to Lisbon from Islip found for next year
20 Dec - 4 Jan
$2,255pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
American Airlines
   
2 STOPS
ISP
Islip Long Island
20 Dec - 4 Jan
$2,713pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
American Airlines
   
2 STOPS
ISP
Islip Long Island
25 Dec - 4 Jan
$2,904pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
American Airlines
   
2 STOPS
ISP
Islip Long Island

One-way flights to Humberto Delgado from Islip

The cheapest one-way flights from Islip to Lisbon
10:04 am - 4:55 pm
American Airlines
2 Stops
25h 51m
ISP - LIS
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Islip</span> to <span class="emphasized">Lisbon</span> flights.

Flight FAQs

From Islip to Lisbon

Which airlines flying from Islip Long Island to Lisbon Humberto Delgado have flexible changes due to COVID-19?

Some of our airline partners flying from Islip Long Island to Lisbon Humberto Delgado have new flexible policies in place due to COVID-19. American Airlines is one of the carriers where you may find flexible change policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from Islip, New York to Lisbon for under $600 on Cheapflights?

Yes, there are multiple flights from Islip, New York to Lisbon for under $600. The cheapest flight booked recently is on American Airlines for just $583, but on average you can expect to pay $1,653.

COVID Restrictions

View COVID Travel Restrictions for Lisbon, Portugal

Do I need a COVID test to fly to Lisbon from Islip?

Information is based on travel restrictions from Islip Long Island to Lisbon Humberto Delgado

Most visitors from Islip Long Island need to provide a negative COVID-19 test result and/or quarantine to enter Lisbon Humberto Delgado.

COVID-19 testing requirements
Visitors from Islip Long Island must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 for RT-PCR (NAAT) and 24 Antigen (quick-test) hours before departing to Lisbon Humberto Delgado.

Quarantine requirements
Visitors from Islip Long Island are not required to quarantine after entering Lisbon Humberto Delgado.

Documents
Health declaration for Madeira - Travelers must complete and submit it 12-48 hours before departure. This will generate a QR code which must be presented upon arrival.


Do I need a test to fly back to Islip from Lisbon?

Returning to Islip Long Island from Lisbon Humberto Delgado

COVID-19 testing requirements
Visitors from Lisbon Humberto Delgado must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Islip Long Island.

Quarantine requirements
Visitors from Lisbon Humberto Delgado are not required to quarantine after entering Islip Long Island.

Hide COVID Travel Restrictions for Lisbon, Portugal

Alternative routes for Islip to Lisbon

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

Destination information for Lisbon

Things to know before you go - useful duration and weather info for your trip from Islip to Lisbon.
Today's exchange rate
$1 = €0.89
Average temperature for November in Lisbon
64.4 °F
Avg rainfall for November in Lisbon
0.2 ″

Airports servicing Islip

Airports servicing Lisbon

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