$375 Cheap Flights from Washington (IAD) to Faro (FAO)

View $375 flight on Wed, Aug 13, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Washington to Faro (IAD-FAO)

Prices were available within the past 7 days and start at $375 for one-way flights and $548 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Mon, Oct 6 - Wed, Oct 22
IAD
Washington
FAO
Algarve
$548 Roundtrip, found 5 days ago
$548
Roundtrip
found 5 days ago
Select Scandinavian Airlines flight, departing Mon, Oct 6 from Washington to Algarve, returning Wed, Oct 22, priced at $548 found 5 days ago
Scandinavian Airlines
Mon, Oct 6 - Wed, Oct 15
IAD
Washington
FAO
Algarve
$548 Roundtrip, found 4 days ago
$548
Roundtrip
found 4 days ago
Select Scandinavian Airlines flight, departing Mon, Oct 6 from Washington to Algarve, returning Wed, Oct 15, priced at $548 found 4 days ago
Scandinavian Airlines
Sun, Nov 2 - Sat, Nov 15
IAD
Washington
FAO
Algarve
$567 Roundtrip, found 5 days ago
$567
Roundtrip
found 5 days ago
Select Scandinavian Airlines flight, departing Sun, Nov 2 from Washington to Algarve, returning Sat, Nov 15, priced at $567 found 5 days ago
TAP Portugal
Tue, Nov 11 - Tue, Nov 18
IAD
Washington
FAO
Algarve
$568 Roundtrip, found 22 hours ago
$568
Roundtrip
found 22 hours ago
Select TAP Portugal flight, departing Tue, Nov 11 from Washington to Algarve, returning Tue, Nov 18, priced at $568 found 22 hours ago
Scandinavian Airlines
Mon, Oct 20 - Sat, Oct 25
IAD
Washington
FAO
Algarve
$568 Roundtrip, found 2 days ago
$568
Roundtrip
found 2 days ago
Select Scandinavian Airlines flight, departing Mon, Oct 20 from Washington to Algarve, returning Sat, Oct 25, priced at $568 found 2 days ago
TAP Portugal
Fri, Oct 17 - Sat, Oct 25
IAD
Washington
FAO
Algarve
$569 Roundtrip, found 4 hours ago
$569
Roundtrip
found 4 hours ago
Select TAP Portugal flight, departing Fri, Oct 17 from Washington to Algarve, returning Sat, Oct 25, priced at $569 found 4 hours ago
TAP Portugal
Fri, Nov 28 - Fri, Dec 5
IAD
Washington
FAO
Algarve
$573 Roundtrip, found 5 hours ago
$573
Roundtrip
found 5 hours ago
Select TAP Portugal flight, departing Fri, Nov 28 from Washington to Algarve, returning Fri, Dec 5, priced at $573 found 5 hours ago
Aer Lingus
Mon, May 12 - Wed, May 21
IAD
Washington
FAO
Algarve
$713 Roundtrip, found 1 day ago
$713
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Mon, May 12 from Washington to Algarve, returning Wed, May 21, priced at $713 found 1 day ago
United
Wed, Aug 13 - Tue, Aug 19
IAD
Washington
FAO
Algarve
$796 Roundtrip, found 4 days ago
$796
Roundtrip
found 4 days ago
Select United flight, departing Wed, Aug 13 from Washington to Algarve, returning Tue, Aug 19, priced at $796 found 4 days ago
Swiss International Air Lines
Mon, Oct 6 - Wed, Oct 15
IAD
Washington
FAO
Algarve
$811 Roundtrip, found 4 days ago
$811
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Mon, Oct 6 from Washington to Algarve, returning Wed, Oct 15, priced at $811 found 4 days ago
Flights from Washington (IAD) to Faro (FAO)
Origin airport
Washington Dulles Intl.
Destination airport
Faro Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Iberia, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$547
Distance
3689 mi

Washington to Faro Flights

The cheapest times to fly from Washington to Faro

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Faro are during the month of October. You can find some of the cheapest flights from Washington to Faro with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Washington to Faro

Sunday is one of the best days to book for cheap flights from Washington to Faro: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Washington to Faro

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Faro in 2025. You can also book with separate airlines for your outbound and return journeys, from $375 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Faro flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Faro airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Faro Intl. Airport (FAO) cost?
Discover the latest flight deals from IAD to FAO by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAD to FAO?
The cheapest flights from IAD to FAO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAD to FAO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from IAD to FAO. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Faro Intl. Airport (FAO)?
You’ll need to hop on a flight with a layover if you’re traveling from Washington Dulles Intl. Airport (IAD) to Faro Intl. Airport (FAO). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from IAD to FAO?
Typically you’ll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Faro Intl. Airport (FAO)?
To avoid potential delays on the Washington Dulles Intl. Airport (IAD) to Faro Intl. Airport (FAO) route, fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Faro Intl. Airport (FAO) last-minute?
Last-minute fares from IAD to FAO are usually more expensive. To lock in the lowest prices, start searching for flights as early as possible. That said, if you can play around with your travel dates, it’s possible to find a cheap ticket right before you leave.
Is it cheaper to book an IAD to FAO flight and hotel package?
Securing an IAD to FAO flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our impressive range of accommodations and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Faro Intl. Airport (FAO)?
In most cases, you can cancel or reschedule your IAD to FAO flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline’s rules and fees on flight changes, or if you need further details, visit our Customer Service portal.

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*Available to One Key members.