The cheapest times to fly from SEA to RAI are

  • January 8th to February 4th
  • March 5th to May 6th (except the week of March 26th)
  • September 3rd to December 9th

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 SEA to RAI is late January and early February. Prices can be as high as $14235 for Saturday flights during late December, or as low as $1222 for Tuesday flights around late January and early February.


When to Fly to Praia

Flying from Seattle, WA (SEA) to Praia (RAI) will usually cost between $1368 to $6660 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January and early February with an average ticket price of $1365. Due to high demand the most expensive time to fly is late December, with an average price of $4277. Planning your trip to low-cost times can easily save you $2912 on economy flights and even more on first-class flights. Generally, any price below $2052 can be considered a good price for a round-trip SEA to RAI flight.

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

SEA to RAI Flight Prices

Compared to other flights, the SEA to RAI flight is more expensive than the average and costs more than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $0.22, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly to Praia, and Fridays are the most expensive days to return to Seattle. Selecting flights on the least expensive days could save you up to $1683 (39%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1955. Return trip prices are from the RAI to SEA 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 SEA to RAI can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 11 hour 32 minutes may not be realistic.


Flight Hacking SEA 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 SEA to RAI — but Champion Traveler does!

Hack #1: Boston, MA (SEA > BOS > RAI)

  • Price for both tickets: $1120
  • Average savings: $933 (45.44%)

See SEA to BOS flights

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

  • Price for both tickets: $1163
  • Average savings: $889 (43.32%)

See SEA to AMS flights

Hack #3: Lisbon (SEA > LIS > RAI)

  • Price for both tickets: $1188
  • Average savings: $864 (42.11%)

See SEA to LIS flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 13 major airlines flying this route most often: Air France, American, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, Royal Air Maroc, Singapore Airlines, Tap Air Portugal, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Praia International Airport to Seattle/Tacoma International Airport?

The distance between the two airports is roughly 5862 miles or 9434 kilometers.

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

The real-world flight time for a nonstop SEA to RAI flight is about 11 hour 32 minutes.

How many flights go between Seattle, WA and Praia?

It depends on the day of the week and the date, but a typical day might have around 4 available flights from SEA to RAI.


Airport Location Info


Departing Airport

Origination code SEA
Origination airport name Seattle/Tacoma International Airport
City Seattle, WA
Country the United States
Latitude 47.5
Longitude -122.3

Return Airport

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


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.