Cheap flights from Washington, D.C. to Portugal 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 Portugal departing on 8/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Washington, D.C. to Portugal
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
PLAY flights from Washington, D.C. to Portugal
Our best PLAY deals on Washington, D.C. to Portugal flight tickets
Scandinavian Airlines flights from Washington, D.C. to Portugal
Our best Scandinavian Airlines deals on Washington, D.C. to Portugal flight tickets
See travel insights to Portugal from
How to get the cheapest flight ticket from Washington, D.C. to Portugal
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 cheapest month to fly to Portugal?
The cheapest month to fly to Portugal from Washington, D.C. is in February. Flight prices, which tend to average around $665, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from Washington, D.C. during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $710.
What is the cheapest day to depart on your flight to Portugal?
According to our data, Tuesday is the cheapest day to fly to Portugal from Washington, D.C.. The lowest ticket price found for a Tuesday departure recently was $783. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $947.
What is the cheapest time of day to depart on your flight to Portugal?
Our most recent data shows that the best time of day to fly to Portugal is at noon. Flights from Washington, D.C. to Portugal during this time can be as low as $661. In the evening is when there is more demand to fly to Portugal, so prices are often more expensive at around $872 per ticket.
What is the cheapest Washington, D.C. to Portugal flight route?
Fly from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado for the best Washington, D.C. - Portugal flight prices
How far in advance should I book a flight to Portugal?
You are more likely to see cheaper flights to Portugal from Washington, D.C. when booking 17 weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $902 when searching 17 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Washington, D.C. for as low as $788 on momondo.
What cabin class options are available on Washington, D.C. to Portugal flights?
There are 3 cabin classes available to choose from on Washington, D.C. to Portugal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Washington, D.C. to Portugal?
TAP AIR PORTUGAL, PLAY, and Royal Air Maroc are the most popular carriers operating from Washington, D.C. to Portugal
What airlines fly to Portugal?
TAP AIR PORTUGAL, United Airlines and Delta are the top three most popular airlines that fly to Portugal from Washington, D.C. according to our data. TAP AIR PORTUGAL is the first choice among our users, with 75% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 14 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.
How many flights depart from Washington, D.C. to Portugal on average per day?
As of May 2025, 4 flights take off from Washington, D.C. and land in Portugal each day. The most common flight departure time for this route is 10:00PM, with 80% of daily flights taking off in the evening.
How many flights depart from Washington, D.C. to Portugal on average per week?
As of May 2025, 29 flights take off from Washington, D.C. and land in Portugal each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.
Cheap Washington, D.C. to Portugal flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Portugal
When did momondo last update prices for flights from Washington, D.C. to Portugal?
Prices for flights from Washington, D.C. to Portugal are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to Portugal?
The number of operators available for flights from Washington, D.C. to Portugal is 14 as of May 2025.
How old do you have to be to fly from Washington, D.C. to Portugal?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents required for your trip to Portugal 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 Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Washington, D.C. to Portugal?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. to Portugal is Boeing 767-400, representing 40.64% of all bookings. The subsequent popular models are Airbus A321neo at 25.94%, Boeing 767-300 at 10.50%, and Boeing 777 at 6.70%.
Best airlines flying from Washington, D.C. to Portugal
Compare and see reviews for airlines that fly from Washington, D.C. to Portugal with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $328 | Free Cancellation | Rating 6.9 101 reviews | |||
| PriceFrom $422 | Free Cancellation | Rating 7.4 1,446 reviews | |||
| PriceFrom $423 | Free Cancellation | Rating 8.0 7,934 reviews | |||
| PriceFrom $435 | Free Cancellation | Rating 7.8 1,334 reviews | |||
| PriceFrom $457 | Free Cancellation | Rating 7.1 1,852 reviews | |||
| PriceFrom $536 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $538 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $551 | Free Cancellation | Rating 6.6 6,842 reviews | |||
| PriceFrom $552 | Free Cancellation | Rating 6.0 460 reviews | |||
| PriceFrom $579 | Free Cancellation | Rating 7.0 2,701 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Portugal?
It is quick and easy to find Washington, D.C. to Portugal 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 Portugal that suits you.
Can I find flights from Washington, D.C. to Portugal with flexible booking policies on momondo?
momondo does allow users to show only those flights to Portugal from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Washington, D.C. to Portugal?
Once you have performed a search for Washington, D.C. to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Washington, D.C. to Portugal right now. Can momondo alert me if prices change?
Price alerts on flights to Portugal from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.