Skyscanner home

Cheap flights from Porto to Washington Dulles

Return selected
Return selected
origin
Enter the city you're flying from, or choose from the options below
Include nearby airports
    selected
    destination
    . Enter your destination, or choose from the options below
    Include nearby airports
      selected
      Travellers and cabin class, 1 Adult, Economy

      Compare Porto to Washington Dulles flight deals

      Find the cheapest month or even day of the year to fly to Washington Dulles

      Book the best Washington Dulles fare with no extra fees

      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 P36,502. Find the lowest prices on one-way and return tickets right here.
      Washington D.C..P26,940 per passenger.Departing Wed, 3 Mar.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Wed, 3 Mar, arriving in Washington Dulles.Price includes taxes and charges.From P26,940, select.
      Washington D.C..P26,940 per passenger.Departing Wed, 24 Feb.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Wed, 24 Feb, arriving in Washington Dulles.Price includes taxes and charges.From P26,940, select.
      Washington D.C..P27,213 per passenger.Departing Wed, 2 Dec.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Wed, 2 Dec, arriving in Washington Dulles.Price includes taxes and charges.From P27,213, select.
      Washington D.C..P27,213 per passenger.Departing Wed, 25 Nov.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Wed, 25 Nov, arriving in Washington Dulles.Price includes taxes and charges.From P27,213, select.
      Washington D.C..P27,293 per passenger.Departing Sat, 16 Jan.One-way flight with Royal Air Maroc.Outbound indirect flight with Royal Air Maroc, departs from Porto on Sat, 16 Jan, arriving in Washington Dulles.Price includes taxes and charges.From P27,293, select.
      Washington D.C..P27,482 per passenger.Departing Tue, 11 May.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Tue, 11 May, arriving in Washington Dulles.Price includes taxes and charges.From P27,482, select.
      Washington D.C..P27,519 per passenger.Departing Wed, 28 Oct.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Wed, 28 Oct, arriving in Washington Dulles.Price includes taxes and charges.From P27,519, select.
      Washington D.C..P27,528 per passenger.Departing Tue, 6 Apr.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Tue, 6 Apr, arriving in Washington Dulles.Price includes taxes and charges.From P27,528, select.
      Washington D.C..P27,570 per passenger.Departing Tue, 22 Jun.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Tue, 22 Jun, arriving in Washington Dulles.Price includes taxes and charges.From P27,570, select.
      Washington D.C..P31,970 per passenger.Departing Fri, 2 Jul.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Fri, 2 Jul, arriving in Washington Dulles.Price includes taxes and charges.From P31,970, select.
      Washington D.C..P32,035 per passenger.Departing Fri, 13 Aug.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from Porto on Fri, 13 Aug, arriving in Washington Dulles.Price includes taxes and charges.From P32,035, select.
      Washington D.C..P37,114 per passenger.Departing Wed, 16 Sep.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Porto on Wed, 16 Sep, arriving in Washington Dulles.Price includes taxes and charges.From P37,114, 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 February.
      Sep
      from P37,114
      Oct
      from P27,519
      Nov
      from P27,213
      Dec
      from P27,213
      Jan
      from P27,293
      Feb
      from P26,940
      Mar
      from P26,940
      Apr
      from P27,528
      May
      from P27,482
      Jun
      from P27,570
      Jul
      from P31,970
      Aug
      from P32,035

      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.
      Closest
      from P27,830
      Search flights

      Washington Dulles

      37km from central Washington D.C.
      Cheapest
      from P26,940
      Search flights

      Baltimore Washington International

      44km from central Washington D.C.
      from P28,603
      Search flights

      Porto to Washington D.C.: Flight information

      The things to know before you go.
      Cheapest flight foundP26,940
      Cheapest month to flyMarch

      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 P35,870. 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 P35,818.
      As of September 2026, there are no flights flying from Porto to Washington Dulles.
      The cheapest month to fly from Porto to Washington Dulles is usually November.
      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 Saturday, 21 November 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, TAP Air Portugal offers the cheapest flight tickets to Washington Dulles.

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

      • Washington DC is five hours behind Porto and observes the UTC-5 timezone.

      • For a smooth journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to board your OPO to IAD flight.

      • Travelling during a peak time like August? School holidays and other popular periods can mean longer queues at check-in and security. Be extra cautious and get there up to four hours before international flights and two hours before a domestic departure.

      • Think about adding a stopover when booking your ticket from Porto Airport to Washington Dulles Airport. Just deselect 'Direct flights only' to break up your journey, or even explore someplace new along the way. Here are some options between OPO and IAD:

        • New York John F. Kennedy Airport

        • Madrid Airport

        • Toronto Pearson International Airport

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

      • The lowest price we've seen for a one-way Porto Airport to Washington Dulles Airport flight is P26,900. A round-trip plane ticket is currently P35,818. Depending on the availability and when you book, these fares can change.

      • It's a good idea to book early if you want to get cheap tickets from OPO to IAD. That's because airlines change prices based on demand, which tends to increase closer to departure.

      • The 'Whole month' search tool shows you the cheapest flights from Porto Airport to Washington Dulles Airport across each month. It's a good way to find a bargain if your travel dates are flexible.

      • Snapping up cheap flights from OPO to IAD is a breeze with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch as soon as there's a better deal.

      • Secure the ideal flight for you by using the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Porto Airport to Washington Dulles Airport, use the 'Sort by' tool. You can also filter by airline, arrival and departure times, and journey duration.

      Handy information about Porto Airport (OPO)

      • When it comes to Porto Airport's on-time performance, data shows 75% of flights arrive within the expected timeframe.

      • Central Porto to Porto Airport is approximately 11 kilometers. Depending on traffic, it'll take about 20 minutes to get there if you're driving, ride-sharing or catching a taxi.

      • Taking public transport? Expect a trip time of around 30 minutes.

      • Get your travels off to a leisurely start by staying near OPO. Whether you're taking an early flight from Porto Airport to Washington Dulles Airport or want to avoid feeling rushed, these stays are ideal:

      Arriving at Washington Dulles Airport (IAD)

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

      • The street address for IAD is 1 Saarinen Circle.

      • Washington Dulles Airport to central Washington DC has a drive time of about 45 minutes. It's approximately 40 kilometers away.

      • When travelling by public transport, expect a journey of around 1 hour 10 minutes.

      When to fly to Washington Dulles Airport (IAD)

      • July is the busiest month for flights from Porto Airport to Washington Dulles Airport. To avoid the crowds, go to Washington DC in February.

      • The warmest month in Washington DC is July, with temperatures ranging between 19ºC (66ºF) and 33ºC (91ºF). Book your flights from Porto Airport to Washington Dulles Airport in this month if you like this kind of weather.

      • Search for cheap tickets from OPO to IAD in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -6ºC (21ºF) and 10ºC (50ºF) on average.

      Explore more of the United States

      • New York is just one of the many places in the United States waiting to be explored after you've seen Washington DC. Around 322 kilometers away to the north-east, its best attractions include Central Park, Statue of Liberty and Metropolitan Museum of Art.

      • Philadelphia is another must-experience destination in the United States and is around 193 kilometers north-east of Washington DC. No trip is complete without seeing Independence Hall, Liberty Bell and Philadelphia Museum of Art.

      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 12 days.