The cheapest times to fly from IAD to RAI are

  • January 22nd to May 27th (except the week of January 29th)
  • August 27th to September 16th (except the week of September 3rd)
  • November 5th to December 16th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from IAD to RAI is mid February. Prices can be as high as $7318 for Saturday flights during late December, or as low as $877 for Sunday flights around mid February.


When to Fly to Praia

Flying from Washington, DC (IAD) to Praia (RAI) will usually cost between $881 to $1553 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid February with an average ticket price of $1040. Due to high demand the most expensive time to fly is late December, with an average price of $2165. Planning your trip to low-cost times can easily save you $1125 on economy flights and even more on first-class flights. Generally, any price below $1314 can be considered a good price for a round-trip IAD to RAI flight.

See below for a graph of average weekly prices for the IAD to RAI route. All prices are for round-trip tickets in USD.

IAD to RAI Flight Prices

Compared to other flights, the IAD to RAI flight is slightly more expensive than the average and costs about as much as the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.22, which is below average.


Flight Prices by Day of the Week

Sunday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly to Praia, and Tuesdays are the most expensive days to return to Washington. Selecting flights on the least expensive days could save you up to $632 (31%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Sunday and returning a week later will cost an average of $1133. Return trip prices are from the RAI to IAD flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from IAD to RAI can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 7 hour 33 minutes may not be realistic.


Flight Hacking IAD to RAI

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from IAD to RAI — but Champion Traveler does!

Hack #1: Lisbon (IAD > LIS > RAI)

  • Price for both tickets: $919
  • Average savings: $396 (30.1%)

See IAD to LIS flights

Hack #2: Amsterdam (IAD > AMS > RAI)

  • Price for both tickets: $1052
  • Average savings: $262 (19.94%)

See IAD to AMS flights

Hack #3: Boston, MA (IAD > BOS > RAI)

  • Price for both tickets: $1054
  • Average savings: $260 (19.79%)

See IAD to BOS flights


Flight Questions Answered

Still have questions about flying from IAD to RAI? We’ve got answers.

Which airlines fly this route?

You can find 16 major airlines flying this route most often: Air France, American, Austrian, British Airways, Brussels Airlines, Delta, Finnair, Iberia, KLM, Lufthansa, Royal Air Maroc, Singapore Airlines, TACV, Tap Air Portugal, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Praia International Airport to Washington Dulles International Airport?

The distance between the two airports is roughly 3650 miles or 5874 kilometers.

How long does it take to fly from IAD to RAI?

The real-world flight time for a nonstop IAD to RAI flight is about 7 hour 33 minutes.

How many flights go between Washington, DC and Praia?

It depends on the day of the week and the date, but a typical day might have around 7 available flights from IAD to RAI.


Airport Location Info


Departing Airport

Origination codeIAD
Origination airport nameWashington Dulles International Airport
CityWashington, DC
Countrythe United States

Return Airport

Destination codeRAI
Destination airport namePraia International Airport
CountryCape Verde


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.