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Cheap flights from Stewart International to Porto

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Compare Stewart International to Porto flight deals

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Flight deals from Stewart International to Porto

Looking for a cheap last-minute deal or the best round-trip flight from Stewart International to Porto? Find the lowest prices on one-way and round-trip tickets right here.
Porto.$554 per passenger.Departing Thu, Aug 28, returning Mon, Sep 1.Round-trip flight with Fly Play and TAP Air Portugal.Outbound indirect flight with Fly Play, departing from Stewart International on Thu, Aug 28, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departing from Porto on Mon, Sep 1, arriving in Stewart International.Price includes taxes and charges.From $554, select.
Porto.$576 per passenger.Departing Sat, May 10, returning Sun, May 18.Round-trip flight with Fly Play.Outbound indirect flight with Fly Play, departing from Stewart International on Sat, May 10, arriving in Porto.Inbound indirect flight with Fly Play, departing from Porto on Sun, May 18, arriving in Stewart International.Price includes taxes and charges.From $576, select.
Porto.$579 per passenger.Departing Tue, Jan 13, returning Tue, Jan 20.Round-trip flight with Fly Play and Ryanair.Outbound indirect flight with Fly Play, departing from Stewart International on Tue, Jan 13, arriving in Porto.Inbound indirect flight with Ryanair, departing from Porto on Tue, Jan 20, arriving in Stewart International.Price includes taxes and charges.From $579, select.
Porto.$583 per passenger.Departing Thu, Nov 20, returning Thu, Nov 27.Round-trip flight with Fly Play and Ryanair.Outbound indirect flight with Fly Play, departing from Stewart International on Thu, Nov 20, arriving in Porto.Inbound indirect flight with Ryanair, departing from Porto on Thu, Nov 27, arriving in Stewart International.Price includes taxes and charges.From $583, select.
Porto.$655 per passenger.Departing Fri, Jul 4, returning Thu, Oct 2.Round-trip flight with Fly Play.Outbound indirect flight with Fly Play, departing from Stewart International on Fri, Jul 4, arriving in Porto.Inbound indirect flight with Fly Play, departing from Porto on Thu, Oct 2, arriving in Stewart International.Price includes taxes and charges.From $655, select.
Porto.$671 per passenger.Departing Wed, Sep 17, returning Thu, Sep 25.Round-trip flight with Fly Play.Outbound indirect flight with Fly Play, departing from Stewart International on Wed, Sep 17, arriving in Porto.Inbound indirect flight with Fly Play, departing from Porto on Thu, Sep 25, arriving in Stewart International.Price includes taxes and charges.From $671, select.
Porto.$783 per passenger.Departing Tue, Nov 25, returning Tue, Dec 2.Round-trip flight with Fly Play and Ryanair.Outbound indirect flight with Fly Play, departing from Stewart International on Tue, Nov 25, arriving in Porto.Inbound indirect flight with Ryanair, departing from Porto on Tue, Dec 2, arriving in Stewart International.Price includes taxes and charges.From $783, select.
Porto.$835 per passenger.Departing Mon, Jul 14, returning Sat, Jul 19.Round-trip flight with Fly Play.Outbound indirect flight with Fly Play, departing from Stewart International on Mon, Jul 14, arriving in Porto.Inbound indirect flight with Fly Play, departing from Porto on Sat, Jul 19, arriving in Stewart International.Price includes taxes and charges.From $835, select.

Find the cheapest month to fly from Stewart International to Porto

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Stewart International to Porto flights are currently cheapest in May.
May
from $575
Jun
from $964
Jul
from $833
Aug
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Sep
from $670
Oct
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Nov
from $582
Dec
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Jan
from $578
Feb
from $894
Mar
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Apr
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Stewart International to Porto: Alternative routes

Compare routes from Stewart International to Porto below. You may find an airport to fly into that's cheaper, faster, or easier than Porto.

New York to Porto: Flight information

The things to know before you go.
Cheapest flight found$554
Cheapest month to flyAugust

Finding cheap flights from Stewart International to Porto: Frequently asked questions

The best price we found for a round-trip flight from Stewart International to Porto is $554. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Stewart International to Porto. But we found flights with one or more stops from $554.
There are no flights flying from Stewart International to Porto, as of May 2025.
The cheapest month to fly from Stewart International to Porto is usually May 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Stewart International Airport to Porto Airport on Thursday, August 28, 2025.
No airlines currently offer direct flights between Stewart International Airport and Porto Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Porto but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Porto is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Fly Play offers the cheapest flight tickets to Porto.

Flying from Stewart International Airport (SWF) to Porto Airport (OPO): what you need to know

  • Porto's timezone is UTC+0, which makes Porto four hours ahead of New York.

  • Your SWF to OPO flight won't wait if you're running late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're traveling internationally.

  • You'll likely experience longer lines during popular months such as July. Arriving up to four hours ahead of an international flight and two hours for a domestic departure is a wise move.

  • Enjoy a quick visit to another city or simply break up your journey with a stopover. Just uncheck 'Direct flights only' to see your options when searching for tickets from Stewart International Airport to Porto Airport. Many travelers pass through Keflavik International Airport on this route.

How to find the cheapest flights from Stewart International Airport (SWF) to Porto Airport (OPO)

  • The cheapest price we've found for a one-way Stewart International Airport to Porto Airport flight is $300. A round-trip plane ticket right now is $554. Depending on the availability and when you book, these fares could change.

  • It's often best to book in advance if you're looking for cheap tickets from SWF to OPO. That's because airlines adjust prices based on demand, which tends to increase closer to departure.

  • If you're flexible with your travel plans, use the 'Whole month' search function. It'll give you the lowest price across the month when searching for your flight from Stewart International Airport to Porto Airport.

  • Landing cheap flights from SWF to OPO couldn't be easier with Price Alerts. All you need to do is set up one of these automatic alerts and we'll let you know as soon as fares go down.

  • Find the ideal flight for you with the help of the filters. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Stewart International Airport to Porto Airport, use the 'Sort by' function. You can also filter by arrival and departure times, airline, and number of stops.

Handy information about Stewart International Airport (SWF)

  • You'll find SWF at 1180 1st St.

  • Stewart International Airport gets top marks for its on-time performance. 83.75% of flights that depart SWF reach their destination without delay.

  • To reach Stewart International Airport from central New York, it'll take around 1 hour 30 minutes by car. This depends on traffic though. It's approximately 121 kilometers from the airport to the city center.

  • Expect a trip time of about 1 hour 55 minutes when using public transport.

  • Searching for a handy hotel close to SWF? If you've booked an early flight from Stewart International Airport to Porto Airport, these stays will have you sleeping moments from your departure gate:

Arriving at Porto Airport (OPO)

  • If you're landing on a late Stewart International Airport to Porto Airport flight, few things top the convenience of staying near the terminal. Collect your bags from the carousel and then be showered and snoozing not long after at one of these accommodation options near OPO:

  • Hit the road running by picking up a Porto Airport rental car. Grab your wheels from Klass Wagen, Goldcar or Drive & Go and explore beyond Porto's main sights.

  • To lock in the lowest price, reserve your vehicle from Porto Airport about three weeks before traveling.

Getting from Porto Airport (OPO) to central Porto

  • From Porto Airport, Porto is approximately 16 kilometers away. It takes around 20 minutes to reach the center driving.

  • It takes around 50 minutes if you're using public transport.

When to fly to Porto Airport (OPO)

  • August is the busiest month for flights from Stewart International Airport to Porto Airport. To escape the crowds, travel to Porto in January.

  • The warmest month in Porto is August, with the temperature ranging between 14ºC (57ºF) and 32ºC (90ºF). Lock in your flights from Stewart International Airport to Porto Airport in this month if you like this kind of weather.

  • If you want to travel in cooler conditions, search for a cheap ticket from SWF to OPO in January. Temperatures average between 3ºC (37ºF) and 14ºC (57ºF) then.

Explore more of Portugal

  • Porto is always a good idea, but there are so many other corners of Portugal just waiting to be discovered. Around 274 kilometers south of Porto, a trip to Lisbon will keep you on the move. Start with attractions like Torre de Belem Garden, Estrela At Lisbon - Tram 28 and Archaeological museum of Sao Jorge Castle.

  • Around 274 kilometers south of Porto, Amadora is another essential stop in Portugal. Experience this destination's highlights firsthand at Jardim Porta do Viveiro Alfragide, Jardim Caracol do Victor Alfragide and Jardim e estatua Eduardo Jorge.

Plan the rest of your trip from New York to Porto

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.