$751 Cheap Flights from Washington (DCA) to Sal Island (SID)

View $751 flight on Sun, Mar 15, 2026Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Sal Island (SID-Amilcar Cabral Intl.)

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key
Find available prices by choosing your travel dates.

Cheap Flights from Washington to Sal Island (DCA-SID)

Prices were available within the past 7 days and start at $751 for one-way flights and $1,171 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sun, Mar 15 - Sat, Mar 28
DCA
Washington
SID
Sal
$1,171 Roundtrip, found 5 days ago
$1,171
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sun, Mar 15 from Washington to Sal, returning Sat, Mar 28, priced at $1,171 found 5 days ago
Air Canada
Thu, Nov 20 - Sun, Nov 30
DCA
Washington
SID
Sal
$1,173 Roundtrip, found 6 days ago
$1,173
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 20 from Washington to Sal, returning Sun, Nov 30, priced at $1,173 found 6 days ago
Air Canada
Thu, Nov 20 - Sun, Nov 30
DCA
Washington
SID
Sal
$1,208 Roundtrip, found 6 days ago
$1,208
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 20 from Washington to Sal, returning Sun, Nov 30, priced at $1,208 found 6 days ago
United
Sun, Mar 15 - Sat, Mar 28
DCA
Washington
SID
Sal
$1,276 Roundtrip, found 5 days ago
$1,276
Roundtrip
found 5 days ago
Select United flight, departing Sun, Mar 15 from Washington to Sal, returning Sat, Mar 28, priced at $1,276 found 5 days ago
Air Canada
Thu, Nov 20 - Sun, Nov 30
DCA
Washington
SID
Sal
$1,283 Roundtrip, found 6 days ago
$1,283
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 20 from Washington to Sal, returning Sun, Nov 30, priced at $1,283 found 6 days ago
Air Canada
Thu, Nov 20 - Sun, Nov 30
DCA
Washington
SID
Sal
$1,288 Roundtrip, found 6 days ago
$1,288
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 20 from Washington to Sal, returning Sun, Nov 30, priced at $1,288 found 6 days ago
Air Canada
Sun, Mar 15 - Sat, Mar 28
DCA
Washington
SID
Sal
$1,288 Roundtrip, found 5 days ago
$1,288
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sun, Mar 15 from Washington to Sal, returning Sat, Mar 28, priced at $1,288 found 5 days ago
Air Canada
Thu, Nov 20 - Sun, Nov 30
DCA
Washington
SID
Sal
$1,293 Roundtrip, found 6 days ago
$1,293
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 20 from Washington to Sal, returning Sun, Nov 30, priced at $1,293 found 6 days ago
Air Canada
Thu, Nov 20 - Sun, Nov 30
DCA
Washington
SID
Sal
$1,322 Roundtrip, found 6 days ago
$1,322
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 20 from Washington to Sal, returning Sun, Nov 30, priced at $1,322 found 6 days ago
TAP Portugal
Fri, May 16 - Fri, May 23
DCA
Washington
SID
Sal
$1,747 Roundtrip, found 2 days ago
$1,747
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Fri, May 16 from Washington to Sal, returning Fri, May 23, priced at $1,747 found 2 days ago
Flights from Washington (DCA) to Sal Island (SID)
Origin airport
Ronald Reagan Washington National
Destination airport
Amilcar Cabral Intl.
Roundtrip price
$1,170
Distance
3581 mi

Washington to Sal Island Flights

The cheapest times to fly from Washington to Sal 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 Sal Island are during the month of March. You can find some of the cheapest flights from Washington to Sal Island with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Washington to Sal 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 Sal 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 Sal Island in 2025. You can also book with separate airlines for your outbound and return journeys, from $751 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 Sal 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 Sal 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 Ronald Reagan Washington National Airport (DCA) to Amilcar Cabral Intl. Airport (SID) cost?
Discover the latest flight deals from DCA to SID 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 DCA to SID?
The cheapest flights from DCA to SID 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 DCA to SID?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from DCA to SID. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Amilcar Cabral Intl. Airport (SID)?
You’ll have to take a flight with a layover when traveling from Ronald Reagan Washington National Airport (DCA) to Amilcar Cabral Intl. Airport (SID). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from DCA to SID?
Usually you’ll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the season, carrier 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 Ronald Reagan Washington National Airport (DCA) to Amilcar Cabral Intl. Airport (SID)?
To avoid possible delays on the Ronald Reagan Washington National Airport (DCA) to Amilcar Cabral Intl. Airport (SID) route, aim to fly before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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 Ronald Reagan Washington National Airport (DCA) to Amilcar Cabral Intl. Airport (SID) last-minute?
Last-minute bookings from DCA to SID are generally more expensive. For the best rates, start looking for flights as early as possible. That said, if you’re flexible with your travel dates, you may find a cheap ticket right before you leave.
Is it cheaper to book a DCA to SID flight and hotel package?
You can save money by securing a DCA to SID flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s simple to manage it all in one place. After choosing your preferred accommodations and flights, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Amilcar Cabral Intl. Airport (SID)?
Usually, it’s possible to reschedule or cancel your DCA to SID flight. However, if it’s been more than 24 hours since booking, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find further details on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.