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C$504 Cheap Flights from Porto (OPO) to Washington Dulles (IAD)

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Flight deals from Porto to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from Porto Airport to Washington Dulles Airport? If you want to travel next month, return fares start from C$919. Find the lowest prices on one-way and return tickets right here.
Washington D.C..C$504 per passenger.Departing Mon., Dec. 21.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Porto on Mon., Dec. 21, arriving in Washington Dulles.Price includes taxes and charges.From C$504, select.
Washington D.C..C$547 per passenger.Departing Thu., Jan. 7.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Porto on Thu., Jan. 7, arriving in Washington Dulles.Price includes taxes and charges.From C$547, select.
Washington D.C..C$580 per passenger.Departing Fri., Jun. 5.One-way flight with Royal Air Maroc.Outbound indirect flight with Royal Air Maroc, departs from Porto on Fri., Jun. 5, arriving in Washington Dulles.Price includes taxes and charges.From C$580, select.
Washington D.C..C$580 per passenger.Departing Sun., Oct. 25.One-way flight with Royal Air Maroc.Outbound indirect flight with Royal Air Maroc, departs from Porto on Sun., Oct. 25, arriving in Washington Dulles.Price includes taxes and charges.From C$580, select.
Washington D.C..C$593 per passenger.Departing Mon., Nov. 2.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Mon., Nov. 2, arriving in Washington Dulles.Price includes taxes and charges.From C$593, select.
Washington D.C..C$593 per passenger.Departing Wed., Sep. 23.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Wed., Sep. 23, arriving in Washington Dulles.Price includes taxes and charges.From C$593, select.
Washington D.C..C$594 per passenger.Departing Tue., Aug. 25.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Tue., Aug. 25, arriving in Washington Dulles.Price includes taxes and charges.From C$594, select.
Washington D.C..C$594 per passenger.Departing Thu., May 28.One-way flight with easyJet.Outbound indirect flight with easyJet, departs from Porto on Thu., May 28, arriving in Washington Dulles.Price includes taxes and charges.From C$594, select.
Washington D.C..C$691 per passenger.Departing Tue., Jul. 7.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Tue., Jul. 7, arriving in Washington Dulles.Price includes taxes and charges.From C$691, select.

Find the cheapest month to fly from Porto to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Porto to Washington Dulles flights are currently cheapest in December.
May
from C$594
Jun.
from C$580
Jul.
from C$691
Aug.
from C$594
Sep.
from C$593
Oct.
from C$580
Nov.
from C$593
Dec.
from C$504
Jan.
from C$547
Feb.
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Mar.
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Apr.
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Porto to Washington Dulles: Alternative routes

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

Washington Ronald Reagan

5km from central Washington D.C.
ClosestCheapest
from C$504
Search flights

Camp Springs Andrews AFB

17km from central Washington D.C.
Search flights

Washington Dulles

37km from central Washington D.C.
Cheapest
from C$504
Search flights

Baltimore Washington International

44km from central Washington D.C.
from C$584
Search flights

Manassas

47km from central Washington D.C.
Search flights

Porto to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundC$504
Cheapest month to flyDecember

Finding cheap flights from Porto to Washington Dulles: Frequently asked questions

The best price we found for a return flight from Porto to Washington Dulles is C$901. 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 Porto to Washington Dulles. But we found flights with one or more stops from C$901.
As of May 2026, there are no flights flying from Porto to Washington Dulles.
The cheapest month to fly from Porto to Washington Dulles is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Porto Airport to Washington Dulles Airport on Tuesday, May 26, 2026.
No airlines currently offer direct flights between Porto Airport and Washington Dulles 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 Washington Dulles 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 Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Lufthansa offers the cheapest flight tickets to Washington Dulles.

Traveling from Porto Airport (OPO) to Washington Dulles International Airport (IAD): what you need to know

  • If you're traveling during a peak month like August, head to the airport even earlier. It's smart to arrive up to four hours before international flights and two hours ahead of domestic departures. Security lines will be longer during vacation periods like spring break and summer.

  • We make it a cinch to book a flight with a stopover. To look at your options for flights from Porto Airport to Washington Dulles International Airport, uncheck 'Direct flights only.' Then, pick a flight that has a stop long enough to tour your chosen city. Some popular stopovers between OPO and IAD include:

    • Pearson International Airport

    • John F. Kennedy International Airport

    • Adolfo Suarez Madrid-Barajas Airport

  • To find out if you need a visa to enter United States, check with your airline and the local embassy or consulate. They'll provide you with the most current information, including other paperwork you may need after booking your cheap ticket from OPO to IAD.

How to find the cheapest flights from Porto Airport (OPO) to Washington Dulles International Airport (IAD)

  • The best price we've seen for a one-way ticket from Porto Airport to Washington Dulles International Airport is C$504. The cheapest price for a return flight is C$901. Keep in mind that fares can change due to demand at the time of booking.

  • To pick up cheap flight tickets from OPO to IAD, book ahead. Airlines usually offer their most competitively priced fares when flights are first released.

  • The 'Whole month' search function shows you the cheapest flight tickets from Porto Airport to Washington Dulles International Airport across the entire month. It's a great way to find a bargain if your trip dates are flexible.

  • Sign into your online account or use the app to set up a Price Alert. You'll get notified right away if there's a better deal on this route. It's easy to do, and it'll save you time looking for cheap flight tickets from OPO to IAD every day.

  • Take advantage of filters to find the perfect journey for you. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Porto Airport to Washington Dulles International Airport, use the 'Sort by' function. You can also filter by departure and arrival times, airline, and number of stops.

Handy information about Porto Airport (OPO)

  • Located around 16 kilometres from the center of Porto, Porto Airport can be reached in about 21 minutes by car, depending on traffic. The ride on public transport takes roughly 49 minutes.

  • Have an early flight from Porto Airport to Washington Dulles International Airport? Avoid the last-minute rush to the terminal (and get some extra shut-eye) by choosing one of these stays close to OPO:

Arriving at Washington Dulles International Airport (IAD)

Getting from Washington Dulles International Airport (IAD) to central Washington DC

  • Washington Dulles International Airport is approximately 56 kilometres from the center of Washington DC. With a car rental or if you're catching a cab, the drive is about 51 minutes.

  • Traveling by public transport will take you roughly 3 hours and 26 minutes.

When to fly to Washington Dulles International Airport (IAD)

  • The quietest month for a flight from Porto Airport to Washington Dulles International Airport is February, while July is the busiest. Pick the best time to go to Washington DC based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • Before locking in your flight from Porto Airport to Washington Dulles International Airport, consider the kind of weather you like. July is the warmest month in Washington DC, with temperatures ranging from 19ºC to 33ºC.

  • January sees average temperatures of between -6ºC and 10ºC. Search for cheap flight tickets from OPO to IAD sometime then if you'd rather travel in cooler conditions.

More about Washington DC

  • After booking your flights from OPO to IAD, you'll want to find somewhere to stay in Washington DC. Make one of these options your base for exploring this exciting destination:

  • Every great journey has to include a little sightseeing. White House Historical Association, The White House and National Mall are attractions you won't want to skip in Washington DC.

  • Ronald Reagan National Airport (DCA) and Baltimore/Wash International Thurgood Marshall Airport (BWI) are alternative ways to travel to or from Washington DC. Make sure you check out the flight schedules and prices. These international airports could be a cheaper or easier choice depending on your travel plans.

Complete your Washington DC trip with hotels and a car rental

  • Once you've secured your cheap ticket to Washington Dulles International Airport, browse our low prices and exclusive rates for hotels. You can also compare hundreds of car rental companies in one go to find the best car rental price for your Washington DC getaway.

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

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