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Cheap flights from New York LaGuardia Airport to Porto from $343

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from New York LaGuardia Airport to Porto departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from New York LaGuardia Airport to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:35 am - 5:50 pm
LGA
-
OPO
25h 15m
2 stops
Multiple Airlines Logo
6:15 am - 7:37 pm
OPO
-
LGA
18h 22m
2 stops
$759Multiple Airlines
Tue, Aug 11 - Tue, Aug 25
Multiple Airlines Logo
7:25 am - 9:20 pm
LGA
-
OPO
32h 55m
3 stops
Multiple Airlines Logo
7:15 am - 8:59 pm
OPO
-
LGA
18h 44m
3 stops
$761Multiple Airlines
Sun, May 17 - Wed, May 27
Multiple Airlines Logo
3:30 pm - 1:30 pm
LGA
-
OPO
17h 00m
2 stops
Multiple Airlines Logo
10:00 pm - 7:37 pm
OPO
-
LGA
26h 37m
2 stops
$767Multiple Airlines
Tue, Aug 18 - Thu, Aug 27
Air Transat Logo
9:55 am - 11:45 am
LGA
-
OPO
20h 50m
1 stop
Air Transat Logo
1:30 pm - 8:55 am
OPO
-
LGA
24h 25m
1 stop
$768Air Transat
Sun, May 24 - Tue, Jun 2
Multiple Airlines Logo
11:35 am - 5:50 pm
LGA
-
OPO
25h 15m
2 stops
Multiple Airlines Logo
6:15 am - 7:37 pm
OPO
-
LGA
18h 22m
2 stops
$771Multiple Airlines
Tue, Aug 11 - Tue, Aug 25
Multiple Airlines Logo
6:45 am - 9:20 pm
LGA
-
OPO
33h 35m
3 stops
Multiple Airlines Logo
7:15 am - 8:01 am
OPO
-
LGA
29h 46m
2 stops
$782Multiple Airlines
Sun, May 17 - Wed, May 27
Air Transat Logo
9:55 am - 11:45 am
LGA
-
OPO
20h 50m
1 stop
Air Transat Logo
1:30 pm - 8:55 am
OPO
-
LGA
24h 25m
1 stop
$785Air Transat
Mon, May 25 - Tue, Jun 2
Multiple Airlines Logo
6:30 am - 8:50 pm
LGA
-
OPO
33h 20m
2 stops
Multiple Airlines Logo
10:25 pm - 7:31 pm
OPO
-
LGA
26h 06m
3 stops
$786Multiple Airlines
Fri, May 29 - Mon, Jun 8
Air Transat Logo
9:55 am - 11:45 am
LGA
-
OPO
20h 50m
1 stop
Air Transat Logo
1:30 pm - 8:55 am
OPO
-
LGA
24h 25m
1 stop
$788Air Transat
Sun, May 24 - Tue, Jun 2
Multiple Airlines Logo
10:40 am - 8:50 am
LGA
-
OPO
17h 10m
2 stops
Multiple Airlines Logo
6:15 am - 7:45 pm
OPO
-
LGA
18h 30m
2 stops
$792Multiple Airlines
Sun, Jul 5 - Tue, Jul 14

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Air Transat flights from New York LaGuardia Airport to Porto

Our best Air Transat deals on New York LaGuardia Airport to Porto flight tickets
Air Transat
May 24
LGA9:55 amNew York LaGuardia
20h 50m
1 stop
OPO11:45 amPorto
Jun 2
OPO1:30 pmPorto
24h 25m
1 stop
LGA8:55 amNew York LaGuardia
$768
Air Transat
May 25
LGA9:55 amNew York LaGuardia
20h 50m
1 stop
OPO11:45 amPorto
Jun 2
OPO1:30 pmPorto
24h 25m
1 stop
LGA8:55 amNew York LaGuardia
$785
Air Transat
May 24
LGA9:55 amNew York LaGuardia
20h 50m
1 stop
OPO11:45 amPorto
Jun 2
OPO1:30 pmPorto
24h 25m
1 stop
LGA8:55 amNew York LaGuardia
$788

momondo Fare Finder

 
Customize your flight search to find flights from New York LaGuardia Airport to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 6, 2026.
Use the filters below to find and compare flights from New York LaGuardia Airport to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Tue 8/11

11:35 am-5:50 pm

2 stops25h 15m

Porto

Tue 8/25

6:15 am-7:37 pm

2 stops18h 22m

$759

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Sun 5/17

7:25 am-9:20 pm

3 stops32h 55m

Porto

Wed 5/27

7:15 am-8:59 pm

3 stops18h 44m

$761

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Tue 8/18

3:30 pm-1:30 pm

2 stops17h 00m

Porto

Thu 8/27

10:00 pm-7:37 pm

2 stops26h 37m

$767

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Sun 5/24

9:55 am-11:45 am

1 stop20h 50m

Porto

Tue 6/2

1:30 pm-8:55 am

1 stop24h 25m

$768

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Tue 8/11

11:35 am-5:50 pm

2 stops25h 15m

Porto

Tue 8/25

6:15 am-7:37 pm

2 stops18h 22m

$771

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Sun 5/17

6:45 am-9:20 pm

3 stops33h 35m

Porto

Wed 5/27

7:15 am-8:01 am

2 stops29h 46m

$782

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Mon 5/25

9:55 am-11:45 am

1 stop20h 50m

Porto

Tue 6/2

1:30 pm-8:55 am

1 stop24h 25m

$785

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Fri 5/29

6:30 am-8:50 pm

2 stops33h 20m

Porto

Mon 6/8

10:25 pm-7:31 pm

3 stops26h 06m

$786

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Sun 5/24

9:55 am-11:45 am

1 stop20h 50m

Porto

Tue 6/2

1:30 pm-8:55 am

1 stop24h 25m

$788
Quickest round-trip

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Sun 7/5

10:40 am-8:50 am

2 stops17h 10m

Porto

Tue 7/14

6:15 am-7:45 pm

2 stops18h 30m

$792

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from New York LaGuardia Airport to Porto

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 is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Monday when prices can be found for as low as $809. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $918. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the morning is the cheapest time of day to fly from New York LaGuardia Airport to Porto when you can find flight prices for as low as $576. Flying to Porto in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $982 on average. Flights to Porto from New York LaGuardia Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from New York LaGuardia Airport to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from New York LaGuardia Airport to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap New York LaGuardia Airport to Porto (LGA to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from New York LaGuardia Airport to Porto

Fastest flight time

10h 20m

Direct flights

None
The fastest flight from New York LaGuardia Airport to Porto takes 10h 20m
There are no direct flights from New York LaGuardia Airport to Porto. There are no popular flight routes from New York LaGuardia Airport to Porto.
Search flight deals

Frequently asked questions about flying from New York LaGuardia Airport to Porto

  • How far is New York LaGuardia to Porto by plane?

    The distance between New York LaGuardia and Porto is about 3317.1 mi. A reasonable flight in good conditions will take 10h 20m.

  • When did momondo last update prices for flights from New York LaGuardia Airport to Porto Airport?

    Prices for flights from New York LaGuardia Airport to Porto Airport are updated daily.

  • How old do you have to be to fly from New York LaGuardia Airport to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from New York LaGuardia Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Aveiro
Matosinhos
Lamego
Esposende
Chaves
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Ponte de Lima
Viseu
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from New York to Porto?

Finding the right flight to Porto from New York is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Porto quick and easy, saving you time and money.

Can I find flights from New York to Porto with flexible booking policies on momondo?

Flights from New York to Porto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from New York to Porto?

Once all potential New York to Porto flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from New York to Porto now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Porto and let you know when they change.

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