In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

How far in advance should I book a flight from New Windsor to Porto?

Travelers have found it’s best to book a flight 52 days in advance to save up to 72% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 52 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from New Windsor to Porto 1-2 weeks in advance for as low as $732, or $1,005 for flights within the next 24 hours.

What is the cheapest month to fly from New Windsor to Porto?

February is one of the best times of the year to fly to Porto from New Windsor. Prices for February average $789 per person but you can even find prices for as low as $443. The most expensive prices can be found in the month of July. Opting for a February flight can save you 33% on your journey compared to booking in July

What is the cheapest time of day to fly from SWF to OPO?

When flying from New Windsor to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Stewart to Porto that include hotel bookings?

Yes. In addition to deals on Stewart to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Stewart to Porto?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stewart to Porto.

Can I find deals for business class flights from Stewart to Porto?

Yes. Cheapflights offers flight deals from Stewart to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$282+ Cheap Flights from New Windsor to Porto

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Cheap flight deals from Stewart to Porto

Popular in	July
Cheapest in	February
Average price	$986

Highest demand for flights based on searches. 21% potential increase in price ($219 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2025

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Find flight deals from Stewart to Porto

Cheapest flights from Stewart to Porto
Explore the most affordable flight options available from Stewart to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

Mon 8/187:15 pmSWF - OPO

1 stop19h 50mMultiple Airlines

Sun 8/242:40 pmOPO - SWF

2 stops32h 25mMultiple Airlines

Deal found 8/14

$1,074

Tue 8/197:15 pmSWF - OPO

2 stops17h 00mMultiple Airlines

Tue 8/266:05 amOPO - SWF

2 stops17h 00mMultiple Airlines

Deal found 8/15

$1,284

Best flights from Stewart to Porto
Discover carefully curated flight deals from Stewart to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 16, 2025.

Mon 8/187:15 pmSWF - OPO

1 stop19h 50mMultiple Airlines

Wed 8/203:25 pmOPO - SWF

2 stops31h 40mMultiple Airlines

Deal found 8/13

$1,049

Mon 8/187:15 pmSWF - OPO

1 stop19h 50mMultiple Airlines

Sun 8/242:40 pmOPO - SWF

2 stops32h 25mMultiple Airlines

Deal found 8/14

$1,074

Tue 8/197:15 pmSWF - OPO

2 stops17h 00mMultiple Airlines

Tue 8/266:05 amOPO - SWF

2 stops17h 00mMultiple Airlines

Deal found 8/15

$1,284

Last-minute flights from Stewart to Porto
Discover last-minute flight deals from Stewart to Porto. Data last updated August 16, 2025 and is based on user searches.

Mon 8/187:15 pmSWF - OPO

1 stop19h 50mMultiple Airlines

Wed 8/203:25 pmOPO - SWF

2 stops31h 40mMultiple Airlines

Deal found 8/13

$1,049

Mon 8/187:15 pmSWF - OPO

1 stop19h 50mMultiple Airlines

Sun 8/242:40 pmOPO - SWF

2 stops32h 25mMultiple Airlines

Deal found 8/14

$1,074

Tue 8/197:15 pmSWF - OPO

2 stops17h 00mMultiple Airlines

Tue 8/266:05 amOPO - SWF

2 stops17h 00mMultiple Airlines

Deal found 8/15

$1,284

One-way flights from Stewart to Porto
Search for one-way flight options from Stewart to Porto. Find affordable one-way fares based on user searches. Data last updated August 16, 2025.

Mon 9/17:15 pmSWF - OPO

3 stops39h 15mMultiple Airlines

Deal found 8/14

$282

Tue 8/267:15 pmSWF - OPO

2 stops22h 40mMultiple Airlines

Deal found 8/15

$307

Mon 8/257:15 pmSWF - OPO

1 stop19h 50mPLAY

Deal found 8/13

$324

Sat 8/237:15 pmSWF - OPO

3 stops34h 55mMultiple Airlines

Deal found 8/15

$370

Thu 8/287:15 pmSWF - OPO

2 stops32h 35mMultiple Airlines

Deal found 8/13

$396

Fly from

Fly to

Route

Depart

Return

Price

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Mon 8/18

7:15 pm-8:05 pm

1 stop19h 50m

Porto

Wed 8/20

3:25 pm-6:05 pm

2 stops31h 40m

$1,049

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Mon 8/18

7:15 pm-8:05 pm

1 stop19h 50m

Porto

Sun 8/24

2:40 pm-6:05 pm

2 stops32h 25m

$1,074

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Tue 8/19

7:15 pm-5:15 pm

2 stops17h 00m

Porto

Tue 8/26

6:05 am-6:05 pm

2 stops17h 00m

$1,284

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Mon 9/1

7:15 pm-3:30 pm

3 stops39h 15m

$282

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Mon 8/25

7:15 pm-10:55 pm

2 stops46h 40m

$301

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Tue 8/26

7:15 pm-10:55 pm

2 stops22h 40m

$307

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Mon 8/25

7:15 pm-8:05 pm

1 stop19h 50m

$325

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Sat 8/23

7:15 pm-11:10 am

3 stops34h 55m

$370

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Mon 8/25

7:15 pm-8:05 pm

1 stop19h 50m

$396

New WindsorPorto

SWF - OPO

SWFOPO

New Windsor Stewart

Thu 8/28

7:15 pm-8:50 am

2 stops32h 35m

$403

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Best time to book a flight from Stewart to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Stewart with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from New Windsor to Porto

What is the cheapest month to book a flight from New Windsor to Porto?

Currently, January is the cheapest month in which you can book a flight from New Windsor to Porto (average of $523). Flying from New Windsor to Porto in June is currently the most expensive (average of $1,029). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Can I find deals for flights from Stewart to Porto that include hotel bookings?
Yes. In addition to deals on Stewart to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Stewart to Porto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stewart to Porto.
Can I find deals for business class flights from Stewart to Porto?
Yes. Cheapflights offers flight deals from Stewart to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from New Windsor to Porto?
Currently, January is the cheapest month in which you can book a flight from New Windsor to Porto (average of $523). Flying from New Windsor to Porto in June is currently the most expensive (average of $1,029). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$282+ Cheap flights from New Windsor (SWF) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Stewart to Porto with Cheapflights

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2. Select your favorite providers

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Cheap flight deals from Stewart to Porto

Popular in

Cheapest in

Average price

Find flight deals from Stewart to Porto

Cheapest flights from Stewart to PortoExplore the most affordable flight options available from Stewart to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

Explore the most affordable flight options available from Stewart to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from New Windsor to Porto that are best for you.

Best time to book a flight from Stewart to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Stewart with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from New Windsor to Porto

What is the cheapest month to book a flight from New Windsor to Porto?

Related info for your journey

Find useful and relevant information for your journey from Stewart to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Stewart to Porto that include hotel bookings?

How can I find direct flights from Stewart to Porto?

Can I find deals for business class flights from Stewart to Porto?

What is the cheapest month to book a flight from New Windsor to Porto?

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Cheapest flights from Stewart to Porto
Explore the most affordable flight options available from Stewart to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.