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Cheap Flights from Washington, D.C. (WASA) to Porto (OPO)

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Compare Washington, D.C. to Porto flight deals

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Flight deals from Washington, D.C. to Porto

Looking for a cheap last-minute deal or the best round-trip flight from Washington, D.C. to Porto? Find the lowest prices on one-way and round-trip tickets right here.
Porto.$248 per passenger.Departing Tue, Aug 19.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Tue, Aug 19, arriving in Porto.Price includes taxes and charges.From $248, select.
Porto.$248 per passenger.Departing Mon, Jul 28.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Mon, Jul 28, arriving in Porto.Price includes taxes and charges.From $248, select.
Porto.$277 per passenger.Departing Sun, Oct 19.One-way flight with SWISS.Outbound indirect flight with SWISS, departing from Washington Dulles on Sun, Oct 19, arriving in Porto.Price includes taxes and charges.From $277, select.
Porto.$284 per passenger.Departing Tue, Sep 30.One-way flight with jetBlue.Outbound indirect flight with jetBlue, departing from Washington Ronald Reagan on Tue, Sep 30, arriving in Porto.Price includes taxes and charges.From $284, select.
Porto.$347 per passenger.Departing Wed, Jun 25.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Baltimore Washington International on Wed, Jun 25, arriving in Porto.Price includes taxes and charges.From $347, select.
Porto.$357 per passenger.Departing Sat, Feb 7.One-way flight with SWISS.Outbound indirect flight with SWISS, departing from Washington Dulles on Sat, Feb 7, arriving in Porto.Price includes taxes and charges.From $357, select.
Porto.$394 per passenger.Departing Sun, Nov 16.One-way flight with United.Outbound indirect flight with United, departing from Washington Ronald Reagan on Sun, Nov 16, arriving in Porto.Price includes taxes and charges.From $394, select.
Porto.$450 per passenger.Departing Fri, Apr 3.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Fri, Apr 3, arriving in Porto.Price includes taxes and charges.From $450, select.

Find the cheapest month to fly from Washington, D.C. to Porto

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington, D.C. to Porto flights are currently cheapest in July.
Jun
from $347
Jul
from $248
Aug
from $248
Sep
from $284
Oct
from $277
Nov
from $394
Dec
Find prices
Jan
Find prices
Feb
from $357
Mar
Find prices
Apr
from $450
May
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Washington, D.C. to Porto: Alternative routes

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

Washington, D.C. to Porto: Flight information

The things to know before you go.
Cheapest flight found$248
Cheapest month to flyAugust

Finding cheap flights from Washington, D.C. to Porto: Frequently asked questions

The best price we found for a round-trip flight from Washington, D.C. to Porto is $478. 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 Washington, D.C. to Porto. But we found flights with one stop from $478.
There are no flights flying from Washington, D.C. to Porto, as of June 2025.
The cheapest month to fly from Washington, D.C. to Porto is usually June 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington, D.C. to Porto Airport on Wednesday, March 4, 2026.
No airlines currently offer direct flights between Washington, D.C. 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.
The cheapest airline that flies to Porto is United.

Flying from Washington DC to Porto Airport (OPO): what you need to know

  • You can choose from a range of airports when planning your flight from Washington DC to Porto Airport (OPO). Check out your options for leaving Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) and Baltimore/Wash International Thurgood Marshall Airport (BWI).

  • Porto is 4 hours ahead of Washington DC. Porto Airport is located in Porto, which operates on the UTC+0 timezone.

  • Leave plenty of time to catch your flight from Washington DC to OPO. As a general rule, turn up two hours before international departures and an hour ahead for domestic flights.

  • July is a peak travel month. If you're heading away then or during a major holiday like Thanksgiving or Christmas, turn up even earlier. Aim for at least two hours ahead for domestic flights and up to four hours for international journeys.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

  • Stopovers are the ideal opportunity to break up your trip — and maybe even explore another city. When browsing flights from Washington DC to OPO departing from Ronald Reagan National Airport (DCA), deselect the 'Direct flights only' box to see where you can visit along the way. Some popular options include:

    • John F. Kennedy International Airport (JFK)

    • Newark Liberty International Airport (EWR)

    • Logan International Airport (BOS)

  • The distance from central Washington DC to DCA is about 5 miles. Use Google Maps for the fastest way to get there, whether that's in your own car or with public transport.

  • Have an early flight from Washington DC to Porto Airport? Avoid the stress of rushing to the terminal (and enjoy a little extra shut-eye) by picking one of these hotels close to Ronald Reagan National Airport:

Washington Dulles International Airport (IAD)

  • Maximize your vacation with a stopover on your flight from Washington DC to Porto Airport. Visit friends or family or tick another city off your bucket list. Whatever you choose to do, check out these stops between Washington Dulles International Airport and OPO:

    • Newark Liberty International Airport (EWR)

    • Logan International Airport (BOS)

    • Pearson International Airport (YYZ)

  • Using public transport, you can travel from central Washington DC to IAD in about 3 hours and 26 minutes. The terminal is roughly 35 miles away, and making the journey by car takes approximately 51 minutes.

  • You're off on vacation, so why not enjoy an extra night away? Consider staying at one of these hotels near Washington Dulles International Airport the day before your flight from Washington DC to OPO:

About Porto Airport (OPO)

  • If you have a late flight from Washington DC to Porto Airport, nothing tops the convenience of staying near the terminal. Collect your bags from the carousel and then be showered and snoozing soon after at one of these hotels near OPO:

Getting from Porto Airport (OPO) to central Porto

  • Porto Airport to central Porto takes around 21 minutes by car. It's approximately 10 miles away. See what options are available, such as car rentals, cabs or ride-sharing services.

  • It takes around 49 minutes if you're traveling by public transport.

How to find the cheapest flights from Washington DC to Porto Airport (OPO)

  • $248 is the cheapest price we've seen for a one-way ticket from Washington DC to Porto Airport. Return flights start from $478. Prices may vary depending on availability at the time of booking.

  • Don't leave everything to the last minute. You're more likely to find cheap tickets from Washington DC to OPO if you book in advance. Airlines often have some fantastic early bird discounts.

  • Use the 'Whole month' tool to compare the prices of tickets from Washington DC to Porto Airport across the entire month. The lowest fares are marked in green, so you can easily choose a flight that fits your budget.

  • Create a Price Alert and keep an eye on changes on this route through email or push notifications. We'll let you know when prices drop. Timing matters when searching for cheap tickets from Washington DC to OPO.

  • Tailor your flights with filters. Choose your preferred arrival and departure times, total journey duration and airlines. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest' flights from Washington DC to Porto Airport.

The best time to fly from Washington DC to Porto Airport (OPO)

  • February is the quietest time of year to fly to Porto. Alternatively, follow the crowds and get away in August. This is the most popular month for flights from Washington DC to Porto Airport, but the best time to go is up to you.

  • When booking your flight from Washington DC to OPO, think about the type of weather you enjoy. August is the warmest month in Porto, with temperatures ranging from 57ºF to 90ºF.

  • If you like traveling in cooler conditions, lock in a cheap flight from Washington DC to Porto Airport in January when temperatures average between 37ºF and 57ºF.

More about Porto

Complete your Porto trip with a car rental

  • We use the same magic that helped you find your cheap flight from Washington DC to Porto Airport to track down your ideal ride. Check out our car rentals in Porto and compare your options in one place. Plus we give you all the info you need to know, from the most popular rental company to the average daily price.

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Plan the rest of your trip from Washington, D.C. to Porto

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