$681 Cheap Flights from Washington (IAD) to Santiago Island (RAI)

View $681 flight on Tue, Sep 1, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Santiago Island (RAI-Praia Intl.)

Cheap Flights from Washington to Santiago Island (IAD-RAI)

Prices were available within the past 7 days and start at $681 for one-way flights and $820 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Mon, Dec 1 - Tue, Dec 9
IAD
Washington
RAI
Santiago
$820 Roundtrip, found 17 hours ago
$820
Roundtrip
found 17 hours ago
Select TAP Portugal flight, departing Mon, Dec 1 from Washington to Santiago, returning Tue, Dec 9, priced at $820 found 17 hours ago
Royal Air Maroc
Fri, Dec 5 - Fri, Dec 26
IAD
Washington
RAI
Santiago
$833 Roundtrip, found 15 hours ago
$833
Roundtrip
found 15 hours ago
Select Royal Air Maroc flight, departing Fri, Dec 5 from Washington to Santiago, returning Fri, Dec 26, priced at $833 found 15 hours ago
Royal Air Maroc
Wed, Feb 18 - Wed, Feb 25
IAD
Washington
RAI
Santiago
$836 Roundtrip, found 1 day ago
$836
Roundtrip
found 1 day ago
Select Royal Air Maroc flight, departing Wed, Feb 18 from Washington to Santiago, returning Wed, Feb 25, priced at $836 found 1 day ago
TAP Portugal
Fri, May 1 - Sat, May 23
IAD
Washington
RAI
Santiago
$869 Roundtrip, found 10 hours ago
$869
Roundtrip
found 10 hours ago
Select TAP Portugal flight, departing Fri, May 1 from Washington to Santiago, returning Sat, May 23, priced at $869 found 10 hours ago
TAP Portugal
Sun, Dec 7 - Sun, Dec 14
IAD
Washington
RAI
Santiago
$871 Roundtrip, found 2 days ago
$871
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Sun, Dec 7 from Washington to Santiago, returning Sun, Dec 14, priced at $871 found 2 days ago
Royal Air Maroc
Fri, Mar 20 - Mon, Mar 30
IAD
Washington
RAI
Santiago
$872 Roundtrip, found 3 days ago
$872
Roundtrip
found 3 days ago
Select Royal Air Maroc flight, departing Fri, Mar 20 from Washington to Santiago, returning Mon, Mar 30, priced at $872 found 3 days ago
TAP Portugal
Wed, Feb 18 - Wed, Feb 25
IAD
Washington
RAI
Santiago
$884 Roundtrip, found 1 day ago
$884
Roundtrip
found 1 day ago
Select TAP Portugal flight, departing Wed, Feb 18 from Washington to Santiago, returning Wed, Feb 25, priced at $884 found 1 day ago
Swiss International Air Lines
Tue, Dec 30 - Thu, Jan 15
IAD
Washington
RAI
Santiago
$966 Roundtrip, found 12 hours ago
$966
Roundtrip
found 12 hours ago
Select Swiss International Air Lines flight, departing Tue, Dec 30 from Washington to Santiago, returning Thu, Jan 15, priced at $966 found 12 hours ago
Turkish Airlines
Wed, Feb 18 - Wed, Feb 25
IAD
Washington
RAI
Santiago
$1,713 Roundtrip, found 1 day ago
$1,713
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Wed, Feb 18 from Washington to Santiago, returning Wed, Feb 25, priced at $1,713 found 1 day ago
Ethiopian Airlines
Thu, Dec 11 - Mon, Dec 15
IAD
Washington
RAI
Santiago
$2,550 Roundtrip, found 14 hours ago
$2,550
Roundtrip
found 14 hours ago
Select Ethiopian Airlines flight, departing Thu, Dec 11 from Washington to Santiago, returning Mon, Dec 15, priced at $2,550 found 14 hours ago

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Alternative airports near Praia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Praia Intl. RAI. Cheapest option available. Flights from $1,655
RAI
Praia Intl.
Cheapest
Flights from $1,655
Flights from Washington (IAD) to Santiago Island (RAI)
Origin airport
Washington Dulles Intl.
Destination airport
Praia Intl.
Airlines serving
Royal Air Maroc, TAP Portugal, Turkish Airlines
Roundtrip price
$820
Distance
3650 mi

Washington to Santiago Island Flights

The cheapest times to fly from Washington to Santiago Island

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 Santiago Island are during the month of December. You can find some of the cheapest flights from Washington to Santiago Island with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Santiago Island

Sunday is one of the best days to book for cheap flights from Washington to Santiago Island: 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 Santiago Island

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 Santiago Island in 2025. You can also book with separate airlines for your outbound and return journeys, from $681 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 Santiago Island 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 Santiago Island 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 Praia Intl. Airport (RAI) cost?
Snag a cheap one-way flight from $681 or cheap return flight from $820 from Washington Dulles Intl. Airport (IAD) to Praia Intl. Airport (RAI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Praia Intl. Airport (RAI)?
Planning your getaway for December can help you save, as it's the cheapest month for flights between IAD and RAI. You'll usually find the lowest fares during off-peak months.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Praia Intl. Airport (RAI)?
You'll need to book a flight with a layover when traveling from Washington Dulles Intl. Airport (IAD) to Praia Intl. Airport (RAI). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from IAD to RAI?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*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 Praia Intl. Airport (RAI)?
To reach Praia Intl. Airport (RAI) without delays, select a flight that takes off from Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Praia Intl. Airport (RAI) last-minute?
Last-minute fares from IAD to RAI are generally more expensive. For the best prices, start looking for flights early. That said, if your travel plans are flexible, you may find a cheap ticket just before your departure.
Is it cheaper to book an IAD to RAI flight and hotel package?
You'll typically save money by securing an IAD to RAI flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've selected your ideal flights and accommodations, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Praia Intl. Airport (RAI)?
Typically, you can modify or cancel your IAD to RAI flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you need further information, go to our Customer Service portal.

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*Available to One Key members.