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Cheap Flights from Baltimore Washington International to Porto

Compare Baltimore Washington International to Porto flight deals

Find the cheapest month or even day of the year to fly to Porto

Book the best Porto fare with no extra fees

Flight deals from Baltimore Washington International to Porto

Looking for a cheap last-minute deal or the best return flight from Baltimore Washington International Airport to Porto Airport? If you want to travel next month, return fares start from R 11,384. Find the lowest prices on one-way and return tickets right here.
Porto.R 4,194 per passenger.Departing Mon, 10 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Mon, 10 Aug, arriving in Porto.Price includes taxes and charges.From R 4,194, select.
Porto.R 4,638 per passenger.Departing Wed, 14 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Wed, 14 Oct, arriving in Porto.Price includes taxes and charges.From R 4,638, select.
Porto.R 5,201 per passenger.Departing Wed, 25 Nov.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Wed, 25 Nov, arriving in Porto.Price includes taxes and charges.From R 5,201, select.
Porto.R 5,496 per passenger.Departing Sun, 20 Sep.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Sun, 20 Sep, arriving in Porto.Price includes taxes and charges.From R 5,496, select.
Porto.R 5,707 per passenger.Departing Sun, 7 Feb.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Baltimore Washington International on Sun, 7 Feb, arriving in Porto.Price includes taxes and charges.From R 5,707, select.
Porto.R 5,710 per passenger.Departing Mon, 1 Mar.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Baltimore Washington International on Mon, 1 Mar, arriving in Porto.Price includes taxes and charges.From R 5,710, select.
Porto.R 5,717 per passenger.Departing Wed, 9 Dec.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Baltimore Washington International on Wed, 9 Dec, arriving in Porto.Price includes taxes and charges.From R 5,717, select.
Porto.R 5,717 per passenger.Departing Sun, 9 May.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Baltimore Washington International on Sun, 9 May, arriving in Porto.Price includes taxes and charges.From R 5,717, select.
Porto.R 5,717 per passenger.Departing Sun, 10 Jan.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Baltimore Washington International on Sun, 10 Jan, arriving in Porto.Price includes taxes and charges.From R 5,717, select.
Porto.R 6,198 per passenger.Departing Fri, 31 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Fri, 31 Jul, arriving in Porto.Price includes taxes and charges.From R 6,198, select.
Porto.R 6,202 per passenger.Departing Sun, 4 Apr.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Baltimore Washington International on Sun, 4 Apr, arriving in Porto.Price includes taxes and charges.From R 6,202, select.
Porto.R 11,531 per passenger.Departing Tue, 15 Jun.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Tue, 15 Jun, arriving in Porto.Price includes taxes and charges.From R 11,531, select.

Find the cheapest month to fly from Baltimore Washington International to Porto

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Baltimore Washington International to Porto flights are currently cheapest in August.
Jul
from R 6,198
Aug
from R 4,194
Sep
from R 5,496
Oct
from R 4,638
Nov
from R 5,201
Dec
from R 5,717
Jan
from R 5,717
Feb
from R 5,707
Mar
from R 5,710
Apr
from R 6,202
May
from R 5,717
Jun
from R 11,531

Baltimore Washington International to Porto: Alternative routes

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

Porto

12km from central Porto
ClosestCheapest
from R 4,194
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Vila Real

76km from central Porto
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Viseu G. Lobato

81km from central Porto
Search flights

Washington D.C. to Porto: Flight information

The things to know before you go.
Cheapest flight foundR 4,194
Cheapest month to flyAugust

Finding cheap flights from Baltimore Washington International to Porto: Frequently asked questions

The best price we found for a return flight from Baltimore Washington International to Porto is R 10,163. 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 Baltimore Washington International to Porto. But we found flights with one or more stops from R 10,163.
As of July 2026, there are no flights flying from Baltimore Washington International to Porto.
The cheapest month to fly from Baltimore Washington International to Porto is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Baltimore Washington International Airport to Porto Airport on Tuesday, 6 October 2026.
No airlines currently offer direct flights between Baltimore Washington International Airport 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.

Currently, Icelandair offers the cheapest flight tickets to Porto.

Travelling from Baltimore Washington International Airport (BWI) to Porto Airport (OPO): what you need to know

  • The timezone in Porto is UTC+0, which is five hours ahead of Washington DC.

  • Your BWI to OPO flight won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • Travelling during a peak time like July? Public holidays and other popular periods can result in longer lines and delays at check-in and security. Play things extra safe and arrive up to four hours before international flights and two hours before domestic departures.

  • We make it easy to book a flight with a stopover. To see your options for tickets from Baltimore Washington International Airport to Porto Airport, deselect 'Direct flights only.' Then, pick a flight offering a stop long enough to explore the city of your choice. Popular stopovers between BWI and OPO include:

    • New York John F. Kennedy Airport

    • Boston Logan International Airport

    • Reykjavik Keflavik Airport

How to find the cheapest flights from Baltimore Washington International Airport (BWI) to Porto Airport (OPO)

  • R 4,194 is currently the best price for a one-way Baltimore Washington International Airport to Porto Airport flight. Return flights start from R 10,163. These prices can change depending on availability and demand.

  • Don't leave everything to the last moment. You're more likely to get cheap tickets from BWI to OPO if you book ahead. Airlines often offer some fantastic early bird deals.

  • Finding cheap flights from Baltimore Washington International Airport to Porto Airport is more likely if you're flexible with your trip dates. Use the 'Whole month' search function to see the lowest fares across every month and score a great deal.

  • Save time looking for cheap flights from BWI to OPO by setting up a Price Alert. You'll receive an email or notification through the app when fares go down.

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

Handy information about Baltimore Washington International Airport (BWI)

  • When it comes to Baltimore Washington International Airport's on-time performance, data shows 77% of flights complete their journey on time.

  • Central Washington DC to Baltimore Washington International Airport is approximately 48 kilometres. Depending on traffic, it'll take you about 40 minutes to get there if you're driving, catching a taxi or ride-sharing.

  • The journey on public transport typically takes 50 minutes.

  • Need a handy hotel near BWI? If you're boarding an early flight from Baltimore Washington International Airport to Porto Airport, these accommodation options will put you moments from your check-in counter:

Arriving at Porto Airport (OPO)

  • Consider staying in a hotel close to OPO if you have a late Baltimore Washington International Airport to Porto Airport flight. Choose one of these options and skip the long transfer:

  • Grab a Porto Airport rental car and explore Porto and beyond with your own set of wheels. Klass Wagen, Goldcar and Drive & Go are popular outlets you can book with here.

  • Secure the lowest price by reserving your ride from Porto Airport about three weeks ahead of your departure.

When to fly to Porto Airport (OPO)

  • It's time to work out your dates for your flight from Baltimore Washington International Airport to Porto Airport. August is the most popular month to head to Porto. If you want a more relaxed vibe, go in March.

  • The warmest month in Porto is August, with the temperature ranging between 14ºC (57ºF) and 32ºC (90ºF). Lock in your flights from Baltimore Washington International Airport to Porto Airport in this month if this is the type of weather you enjoy.

  • If you'd rather travel in cooler conditions, look for a cheap ticket from BWI to OPO in January. Average temperatures are between 3ºC (37ºF) and 14ºC (57ºF) then.

Explore more of Portugal

  • Porto has loads to offer, but there are so many other parts of Portugal just waiting to be discovered. About 274 kilometres south of Porto, a trip to Lisbon will fill your itinerary to the brim. Start with leading sights like Pasteis de Belém, belém and Real Mosteiro de Santa Maria de Belém.

  • If you're ready to explore another major destination in Portugal, head for Amadora, roughly 274 kilometres south of Porto. Roman Villa, Park Fantasia and Palácio dos Condes da Lousã are the start of reasons to visit.

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 12 days.