The cheapest times to fly from RAI to IAD are

  • February 12th to May 27th
  • November 5th to December 2nd

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 RAI to IAD is mid February. Prices can be as high as $4687 for Tuesday flights during early to mid December, or as low as $1031 for Sunday flights around mid February.


When to Fly to Washington

Flying from Praia (RAI) to Washington, DC (IAD) will usually cost between $1031 to $2234 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 $1209. Due to high demand the most expensive time to fly is early to mid December, with an average price of $2095. Planning your trip to low-cost times can easily save you $886 on economy flights and even more on first-class flights. Generally, any price below $1396 can be considered a good price for a round-trip RAI to IAD flight.

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

RAI to IAD Flight Prices

Compared to other flights, the RAI to IAD flight is slightly more expensive than the average and costs about as much as the average flight leaving from Praia. The average price per mile (for a direct flight) is $0.24, which is below average.


Flight Prices by Day of the Week

Sunday is usually the cheapest day to depart and return on this flight. Tuesdays are the most expensive days to fly to Washington, and Saturdays are the most expensive days to return to Praia. 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 $1213. Return trip prices are from the IAD to RAI 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 RAI to IAD 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 RAI to IAD

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 RAI to IAD — but Champion Traveler does!

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

  • Price for both tickets: $888
  • Average savings: $508 (36.39%)

See RAI to AMS flights

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

  • Price for both tickets: $1004
  • Average savings: $392 (28.08%)

See RAI to LIS flights

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

  • Price for both tickets: $1077
  • Average savings: $319 (22.85%)

See RAI to BOS flights


Flight Questions Answered

Still have questions about flying from RAI to IAD? 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 Washington Dulles International Airport to Praia International Airport?

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

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

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

How many flights go between Praia and Washington, DC?

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


Airport Location Info


Departing Airport

Origination code RAI
Origination airport name Praia International Airport
City Praia
Country Cape Verde
Latitude 14.9
Longitude -23.5

Return Airport

Destination code IAD
Destination airport name Washington Dulles International Airport
City Washington, DC
Country the United States
Latitude 38.9
Longitude -77.5


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.