Cheap flights from Washington, D.C. to Porto

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Flight deals from Washington, D.C. to Porto Airport

Looking for a cheap last-minute deal or the best round-trip flight from Washington, D.C. to Porto Airport? If you want to travel next month, round-trip fares start from $574. Find the lowest prices on one-way and round-trip tickets right here.

Porto.$574 per passenger.Departing Tue, Apr 14, returning Mon, Apr 20.Round-trip flight with SWISS and Ryanair.Outbound indirect flight with SWISS, departing from Washington Dulles on Tue, Apr 14, arriving in Porto.Inbound indirect flight with Ryanair, departing from Porto on Mon, Apr 20, arriving in Washington Dulles.Price includes taxes and charges.From $574, select.

Porto.$599 per passenger.Departing Tue, May 5, returning Tue, May 12.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Tue, May 5, arriving in Porto.Inbound indirect flight with Turkish Airlines, departing from Porto on Tue, May 12, arriving in Washington Dulles.Price includes taxes and charges.From $599, select.

Porto.$599 per passenger.Departing Wed, Apr 22, returning Wed, May 13.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Wed, Apr 22, arriving in Porto.Inbound indirect flight with Turkish Airlines, departing from Porto on Wed, May 13, arriving in Washington Dulles.Price includes taxes and charges.From $599, select.

Porto.$603 per passenger.Departing Sun, Sep 13, returning Tue, Sep 22.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Sun, Sep 13, arriving in Porto.Inbound indirect flight with Turkish Airlines, departing from Porto on Tue, Sep 22, arriving in Washington Dulles.Price includes taxes and charges.From $603, select.

Porto.$605 per passenger.Departing Tue, Aug 18, returning Tue, Aug 25.Round-trip flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Tue, Aug 18, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departing from Porto on Tue, Aug 25, arriving in Washington Dulles.Price includes taxes and charges.From $605, select.

Porto.$617 per passenger.Departing Tue, Oct 20, returning Tue, Oct 27.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Tue, Oct 20, arriving in Porto.Inbound indirect flight with Turkish Airlines, departing from Porto on Tue, Oct 27, arriving in Washington Dulles.Price includes taxes and charges.From $617, select.

Porto.$617 per passenger.Departing Wed, Oct 28, returning Wed, Nov 4.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Wed, Oct 28, arriving in Porto.Inbound indirect flight with Turkish Airlines, departing from Porto on Wed, Nov 4, arriving in Washington Dulles.Price includes taxes and charges.From $617, select.

Porto.$617 per passenger.Departing Tue, Aug 25, returning Tue, Sep 1.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Tue, Aug 25, arriving in Porto.Inbound indirect flight with Turkish Airlines, departing from Porto on Tue, Sep 1, arriving in Washington Dulles.Price includes taxes and charges.From $617, select.

Porto.$620 per passenger.Departing Wed, Sep 30, returning Wed, Oct 7.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Wed, Sep 30, arriving in Porto.Inbound indirect flight with Turkish Airlines, departing from Porto on Wed, Oct 7, arriving in Washington Dulles.Price includes taxes and charges.From $620, select.

Porto.$740 per passenger.Departing Mon, Nov 23, returning Sun, Nov 29.Round-trip flight with KLM.Outbound indirect flight with KLM, departing from Washington Dulles on Mon, Nov 23, arriving in Porto.Inbound indirect flight with KLM, departing from Porto on Sun, Nov 29, arriving in Washington Dulles.Price includes taxes and charges.From $740, select.

Porto.$757 per passenger.Departing Fri, Dec 25, returning Thu, Dec 31.Round-trip flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Fri, Dec 25, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departing from Porto on Thu, Dec 31, arriving in Washington Dulles.Price includes taxes and charges.From $757, select.

Porto.$758 per passenger.Departing Tue, Jun 2, returning Wed, Jun 10.Round-trip flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Tue, Jun 2, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departing from Porto on Wed, Jun 10, arriving in Washington Dulles.Price includes taxes and charges.From $758, select.

Porto.$787 per passenger.Departing Thu, Jul 16, returning Thu, Jul 23.Round-trip flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Thu, Jul 16, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departing from Porto on Thu, Jul 23, arriving in Washington Dulles.Price includes taxes and charges.From $787, select.

Porto.$833 per passenger.Departing Mon, Jul 20, returning Wed, Aug 5.Round-trip flight with KLM.Outbound indirect flight with KLM, departing from Washington Dulles on Mon, Jul 20, arriving in Porto.Inbound indirect flight with KLM, departing from Porto on Wed, Aug 5, arriving in Washington Dulles.Price includes taxes and charges.From $833, select.

Porto.$845 per passenger.Departing Thu, May 28, returning Thu, Jun 4.Round-trip flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Thu, May 28, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departing from Porto on Thu, Jun 4, arriving in Washington Dulles.Price includes taxes and charges.From $845, select.

Porto.$903 per passenger.Departing Mon, Jun 22, returning Thu, Jul 9.Round-trip flight with Porter Airlines and Iberia.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Mon, Jun 22, arriving in Porto.Inbound indirect flight with Iberia, departing from Porto on Thu, Jul 9, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $903, 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 April.

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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.

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

How much are round-trip flights from Washington, D.C. to Porto?

The best price we found for a round-trip flight from Washington, D.C. to Porto is $574. 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.

Which airlines fly direct from Washington, D.C. to Porto?

Currently, there are no airlines that fly direct from Washington, D.C. to Porto. But we found flights with one stop from $574.

How many flights are there a week from Washington, D.C. to Porto?

There are no flights flying from Washington, D.C. to Porto, as of March 2026.

When is the cheapest time to fly from Washington, D.C. to Porto?

The cheapest month to fly from Washington, D.C. to Porto is usually April.

Which upcoming date is cheapest to fly from Washington, D.C. to Porto Airport on?

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 Tuesday, April 14, 2026.

Can I get a direct flight from Washington, D.C. to Porto Airport?

No airlines currently offer direct flights between Washington, D.C. and Porto Airport. Most routes have one or more stops.

How can I find the best flight deal to Porto?

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.

When is the best time to book flights to Porto?

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.

Which is the cheapest airline to fly with from Washington, D.C. to Porto?

The cheapest airline that flies to Porto is SWISS.

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

Planning your flight from Washington DC to Porto Airport (OPO) begins with finding the best airport to take off from. Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) and Baltimore/Wash International Thurgood Marshall Airport (BWI) are your options in Washington DC.
Porto Airport is located in Porto. The city operates on the UTC+0 timezone and is four hours ahead of Washington DC.
Get to the airport on time so you don't miss your flight from Washington DC to OPO. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid sprinting to your gate.
Heading off during a peak period like a public holiday? Expect longer lines at check-in and security. To be on the safe side, arrive up to four hours before international flights and two hours before domestic departures.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

We make it a breeze to book cheap flights from Washington DC to OPO that include a stopover. To explore all your options leaving from Ronald Reagan National Airport (DCA), uncheck 'Direct flights only.' Next, choose a flight with a stop long enough to tour your chosen city. Major stopovers between DCA and OPO include:
- John F. Kennedy International Airport (JFK)
- Newark Liberty International Airport (EWR)
- Logan International Airport (BOS)
DCA is about 8 kilometers from central Washington DC. If you're ride-sharing, driving or catching a cab from the center, it'll take you 15 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the journey time to be around 45 minutes.
Searching for a comfortable hotel near Ronald Reagan National Airport? If you've booked an early flight from Washington DC to Porto Airport, these accommodation options will have you sleeping moments from your departure lounge:
When it comes to Ronald Reagan National Airport's on-time performance, 76.44% of flights complete their journey on time.
The address for DCA is 1 Aviation Circle.

Washington Dulles International Airport (IAD)

Get the most out of your vacation with a stopover on your flight from Washington DC to Porto Airport. Check out these connections between Washington Dulles International Airport and OPO:
- Newark Liberty International Airport (EWR)
- Logan International Airport (BOS)
- Pearson International Airport (YYZ)
You can arrive at IAD from central Washington DC in approximately 50 minutes by car (depending on traffic conditions). The journey on public transport takes roughly 1 hour 10 minutes to cover the 56 kilometers or so.
Want to enjoy an extra night away before your Washington DC to OPO flight? Relax in a hotel near Washington Dulles International Airport before your vacation officially starts. These stays are calling your name:
When it comes to flights staying on schedule, Washington Dulles International Airport has an on-time arrival rate of 74.39%.
IAD is located at 1 Saarinen Circle.

Baltimore/Wash International Thurgood Marshall Airport (BWI)

Reserve a plane ticket from Washington DC to Porto Airport (OPO) out of Baltimore/Wash International Thurgood Marshall Airport (BWI) with a stop or two. Popular stopovers between BWI and OPO are:
- John F. Kennedy International Airport (JFK)
- Logan International Airport (BOS)
- Keflavik International Airport (KEF)
BWI is around 48 kilometers from central Washington DC. Driving from the city center to the airport takes about 50 minutes. If you're planning to use public transport, expect a journey of around 1 hour 30 minutes.
Make catching an early Washington DC to Porto Airport flight the easiest part of your journey. Stay at one of these hotels near Baltimore/Wash International Thurgood Marshall Airport and get to your departure gate with plenty of time to spare:
The on-time performance rating of BWI is 77.13%. In simpler terms, that's how frequently flights from this airport arrive at their destination as planned.

About Porto Airport (OPO)

Have a late flight from Washington DC to Porto Airport? Don't let your travel day stretch into tomorrow. Stay at one of these hotels near OPO and turn in quicker:
Get your adventure underway by picking up a Porto Airport rental car. Grab your wheels from Klass Wagen, Goldcar or Drive & Go and explore beyond Porto's usual tourist stops.
Booking your ride around three weeks in advance of your Washington DC to Porto Airport flight can help you get a cheaper deal.

Getting from Porto Airport (OPO) to central Porto

Porto Airport is around 11 kilometers from central Porto. How long it takes to get to the center in a car rental or cab depends on the time of day. Do a little research beforehand.
Traveling on public transport takes around 50 minutes.

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

The cheapest price we've found for a one-way ticket from Washington DC to Porto Airport is $297. For a return flight on this route, the best price is $574. Depending on when you want to go and the availability, these fares can change.
Don't leave everything to the last moment. You're more likely to find cheap flights from Washington DC to OPO if you book early. Airlines often have some great early bird deals.
Affordable Washington DC to Porto Airport tickets are easier to find when your travel dates are flexible. Try using the 'Whole month' search function to compare fares across each month and then pick the cheapest day.
Locking in a cheap plane ticket from Washington DC to OPO is a breeze with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch as soon as the price has dropped.
Hunt down a great price on a flight from Washington DC to Porto Airport with the help of the filters. Pick your ideal departure and arrival times, airlines and number of stops. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best.'

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

August is the busiest month for flights from Washington DC to Porto Airport (OPO). Plan your visit to Porto in February if you prefer a quieter experience.
The warmest month in Porto is August, with temperatures ranging between 14ºC (57ºF) and 32ºC (90ºF). Lock in your Washington DC to OPO plane ticket then if that's your idea of comfortable weather.
January sees temperatures of between 3ºC (37ºF) and 14ºC (57ºF). Look for cheap tickets from Washington DC to Porto Airport around that time if you'd rather travel in cooler conditions.

More about Porto

Start your Porto trip off on the right foot by choosing the perfect place to stay. After booking your flight from Washington DC to Porto Airport, explore our range of accommodation options including:
Your Porto trip won't be complete without checking out the sights. Highlights you can't miss include Ribeira District, Rio Douro and Livraria Lello.

Explore more of Portugal

You've seen Porto, now it's time to explore other parts of Portugal. Journey about 290 kilometers south to Lisbon to tick off its leading sights. From belém to Pasteis de Belém and Real Mosteiro de Santa Maria de Belém, you'll have a packed itinerary ahead.
Around 274 kilometers south of Porto, Amadora is another favorite stop in Portugal. Start your sightseeing at Roman Villa, Park Fonte das Avencas and Park Fantasia.