Cheap flights from Washington, D.C. to Porto from $254
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Porto departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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TAP AIR PORTUGAL flights from Washington, D.C. to Porto
Our best TAP AIR PORTUGAL deals on Washington, D.C. to Porto flight tickets
United Airlines flights from Washington, D.C. to Porto
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How to get the cheapest flight ticket from Washington, D.C. to Porto
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Washington, D.C. and Porto?
What is the cheapest month to fly to Porto?
The month of November is, on average, the cheapest month to fly to Porto from Washington, D.C., with most prices found around $446. If you aren’t able to travel during the month of November, then book flights to Porto from Washington, D.C. during October instead. Flights to Porto in October, while not as cheap as those in November, still average around $555.
What is the cheapest day to depart on your flight to Porto?
The cheapest day to depart on your flight to Porto is on a Sunday when prices can be found for as low as $613. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $779. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.
What is the cheapest time of day to depart on your flight to Porto?
In the afternoon is the cheapest time of day to fly from Washington, D.C. to Porto when you can find flight prices for as low as $698. Flying to Porto in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $836 on average. Flights to Porto from Washington, D.C. at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to Porto?
You are more likely to see cheaper flights to Porto from Washington, D.C. when booking 18 weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $721 when searching 18 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Washington, D.C. for as low as $632 on momondo.
What is the cheapest airline that flies from Washington, D.C. to Porto?
TAP AIR PORTUGAL, PLAY, and American Airlines are the most popular carriers operating from Washington, D.C. to Porto
What airlines fly to Porto?
TAP AIR PORTUGAL, Delta and KLM are the top three most popular airlines that fly to Porto from Washington, D.C. according to our data. TAP AIR PORTUGAL is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 8 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.
When to book flights from Washington, D.C. to Porto
Cheap Washington, D.C. to Porto (WAS to OPO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Porto
How far is Washington, D.C. to Porto by plane?
The straight-line distance from Washington, D.C. to Porto is 3523.1 mi. By plane, this route typically takes 9h 30m.
When did momondo last update prices for flights from Washington, D.C. to Porto Airport?
Prices for flights from Washington, D.C. to Porto Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to Porto Airport?
There are 8 operators available for flights from Washington, D.C. to Porto Airport as of April 2025.
How old do you have to be to fly from Washington, D.C. to Porto Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Porto Airport.
What documentation or ID do you need to fly to Porto Airport?
The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Washington, D.C. to Porto?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to Porto is TAP AIR PORTUGAL, representing 56% of all bookings. The subsequent popular airlines are Delta at 11%, KLM at 10%, and United Airlines at 9%.
Best airlines flying from Washington, D.C. to Porto
Compare and see reviews for airlines that fly from Washington, D.C. to Porto with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $422 | Free Cancellation | Rating 7.4 1,446 reviews | |||
| PriceFrom $423 | Free Cancellation | Rating 8.0 7,936 reviews | |||
| PriceFrom $435 | Free Cancellation | Rating 7.8 1,333 reviews | |||
| PriceFrom $457 | Free Cancellation | Rating 7.1 1,851 reviews | |||
| PriceFrom $538 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $567 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $579 | Free Cancellation | Rating 7.0 2,696 reviews | |||
| PriceFrom $603 | Free Cancellation | Rating 6.7 7,042 reviews |
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Why should I use momondo to find a flight deal from Washington, D.C. to Porto?
It is quick and easy to find Washington, D.C. to Porto flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Porto that suits you.
Can I find flights from Washington, D.C. to Porto with flexible booking policies on momondo?
Flights from Washington, D.C. to Porto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Washington, D.C. to Porto?
momondo provides multiple filters to help you find the best flight to Porto from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Washington, D.C. to Porto right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Washington, D.C. to Porto now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Porto and let you know when they change.