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

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

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Portugal.

What documentation or ID do you need to fly to Portugal?

The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$1,083 Cheap Flights from Islip to Portugal in 2025/26

1 adult

0 bags

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9:59 am - 3:00 pmISP-OPO

24h 01m2 stops

8:00 pm - 7:45 pmOPO-ISP

28h 45m2 stops

$1,083Multiple Airlines

Find Deal

sáb., nov. 29 - sáb., dic. 6

9:59 am - 10:15 amISP-LIS

19h 16m1 stop

11:40 am - 7:45 pmLIS-ISP

13h 05m1 stop

$1,147Multiple Airlines

Find Deal

vie., nov. 28 - vie., dic. 5

7:30 am - 5:35 amISP-LIS

17h 05m1 stop

11:30 am - 7:45 pmLIS-ISP

13h 15m1 stop

$1,209Multiple Airlines

Find Deal

dom., nov. 30 - dom., dic. 7

7:30 am - 5:35 amISP-LIS

17h 05m1 stop

7:45 pm - 7:34 pmLIS-ISP

52h 49m2 stops

$1,224Multiple Airlines

Find Deal

dom., nov. 30 - dom., dic. 7

12:40 pm - 5:35 amISP-LIS

11h 55m1 stop

8:35 am - 5:14 pmLIS-ISP

37h 39m2 stops

$1,271Multiple Airlines

Find Deal

vie., nov. 28 - vie., dic. 5

12:40 pm - 12:10 pmISP-OPO

18h 30m3 stops

8:00 pm - 7:45 pmOPO-ISP

28h 45m2 stops

$1,436Multiple Airlines

Find Deal

sáb., nov. 29 - sáb., dic. 6

12:40 pm - 10:45 pmISP-LIS

29h 05m3 stops

11:30 am - 7:45 pmLIS-ISP

13h 15m1 stop

$1,437Multiple Airlines

Find Deal

dom., nov. 30 - dom., dic. 7

12:40 pm - 10:15 pmISP-LIS

28h 35m3 stops

11:40 am - 7:45 pmLIS-ISP

13h 05m1 stop

$1,445Multiple Airlines

Find Deal

vie., nov. 28 - vie., dic. 5

12:40 pm - 10:45 pmISP-LIS

29h 05m3 stops

5:00 am - 7:45 pmLIS-ISP

19h 45m2 stops

$1,849Multiple Airlines

Find Deal

dom., nov. 30 - dom., dic. 7

Fly from

Fly to

Route

Depart

Return

Price

IslipPorto

ISP - OPO

ISPOPO

Islip Long Island

sáb. 11/29

9:59 am-3:00 pm

2 stops24h 01m

Porto

sáb. 12/6

8:00 pm-7:45 pm

2 stops28h 45m

$1,083

IslipLisbon

ISP - LIS

ISPLIS

Islip Long Island

vie. 11/28

9:59 am-10:15 am

1 stop19h 16m

Lisbon Humberto Delgado

vie. 12/5

11:40 am-7:45 pm

1 stop13h 05m

$1,147

IslipLisbon

ISP - LIS

ISPLIS

Islip Long Island

dom. 11/30

7:30 am-5:35 am

1 stop17h 05m

Lisbon Humberto Delgado

dom. 12/7

11:30 am-7:45 pm

1 stop13h 15m

$1,209

IslipLisbon

ISP - LIS

ISPLIS

Islip Long Island

dom. 11/30

7:30 am-5:35 am

1 stop17h 05m

Lisbon Humberto Delgado

dom. 12/7

7:45 pm-7:34 pm

2 stops52h 49m

$1,224

IslipLisbon

ISP - LIS

ISPLIS

Islip Long Island

vie. 11/28

12:40 pm-5:35 am

1 stop11h 55m

Lisbon Humberto Delgado

vie. 12/5

8:35 am-5:14 pm

2 stops37h 39m

$1,271

IslipPorto

ISP - OPO

ISPOPO

Islip Long Island

sáb. 11/29

12:40 pm-12:10 pm

3 stops18h 30m

Porto

sáb. 12/6

8:00 pm-7:45 pm

2 stops28h 45m

$1,436

IslipLisbon

ISP - LIS

ISPLIS

Islip Long Island

dom. 11/30

12:40 pm-10:45 pm

3 stops29h 05m

Lisbon Humberto Delgado

dom. 12/7

11:30 am-7:45 pm

1 stop13h 15m

$1,437

IslipLisbon

ISP - LIS

ISPLIS

Islip Long Island

vie. 11/28

12:40 pm-10:15 pm

3 stops28h 35m

Lisbon Humberto Delgado

vie. 12/5

11:40 am-7:45 pm

1 stop13h 05m

$1,445

IslipLisbon

ISP - LIS

ISPLIS

Islip Long Island

dom. 11/30

12:40 pm-10:45 pm

3 stops29h 05m

Lisbon Humberto Delgado

dom. 12/7

5:00 am-7:45 pm

2 stops19h 45m

$1,849

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Islip to Portugal

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 airlines fly to Portugal?

TAP AIR PORTUGAL, United Airlines and Azores Airlines are the top three most popular airlines that fly to Portugal from Islip according to our data. TAP AIR PORTUGAL is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 24 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

Cheap Islip to Portugal flight deals and tips

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

Direct flights	None

There are no direct flights from Islip to Portugal. There are no popular flight routes from Islip to Portugal.

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When did momondo last update prices for flights from Islip Long Island Airport to Portugal?
Prices for flights from Islip Long Island Airport to Portugal were last updated today.
How old do you have to be to fly from Islip Long Island Airport to Portugal?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

It is quick and easy to find Islip to Portugal flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Portugal that suits you.

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

All flight searches from Islip to Portugal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Islip to Portugal?

momondo helps you find the best flight between Islip and Portugal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Portugal, momondo offers a useful price alert feature which will track prices for flights to Portugal from Islip and alert you when they change.