$475 Cheap Flights from Seattle (SEA) to Santiago Island (RAI)

View $475 flight on Mon, Apr 27, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Santiago Island (RAI-Praia Intl.)

Cheap Flights from Seattle to Santiago Island (SEA-RAI)

Prices were available within the past 7 days and start at $475 for one-way flights and $922 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, Oct 21 - Fri, Nov 7
SEA
Seattle
RAI
Santiago
$922 Roundtrip, found 1 day ago
$922
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Oct 21 from Seattle to Santiago, returning Fri, Nov 7, priced at $922 found 1 day ago
JetBlue Airways
Tue, Oct 21 - Wed, Nov 5
SEA
Seattle
RAI
Santiago
$925 Roundtrip, found 1 day ago
$925
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Oct 21 from Seattle to Santiago, returning Wed, Nov 5, priced at $925 found 1 day ago
JetBlue Airways
Tue, Oct 21 - Sun, Nov 9
SEA
Seattle
RAI
Santiago
$971 Roundtrip, found 1 day ago
$971
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Oct 21 from Seattle to Santiago, returning Sun, Nov 9, priced at $971 found 1 day ago
Alaska Airlines
Sat, Oct 25 - Fri, Nov 7
SEA
Seattle
RAI
Santiago
$971 Roundtrip, found 1 day ago
$971
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Oct 25 from Seattle to Santiago, returning Fri, Nov 7, priced at $971 found 1 day ago
Alaska Airlines
Sat, Oct 25 - Wed, Nov 5
SEA
Seattle
RAI
Santiago
$974 Roundtrip, found 1 day ago
$974
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Oct 25 from Seattle to Santiago, returning Wed, Nov 5, priced at $974 found 1 day ago
Alaska Airlines
Sat, Nov 1 - Wed, Nov 12
SEA
Seattle
RAI
Santiago
$977 Roundtrip, found 1 day ago
$977
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Nov 1 from Seattle to Santiago, returning Wed, Nov 12, priced at $977 found 1 day ago
Alaska Airlines
Thu, Jan 22 - Wed, Feb 4
SEA
Seattle
RAI
Santiago
$980 Roundtrip, found 1 day ago
$980
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Seattle to Santiago, returning Wed, Feb 4, priced at $980 found 1 day ago
Alaska Airlines
Fri, Oct 31 - Wed, Nov 12
SEA
Seattle
RAI
Santiago
$981 Roundtrip, found 1 day ago
$981
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Oct 31 from Seattle to Santiago, returning Wed, Nov 12, priced at $981 found 1 day ago
Swiss International Air Lines
Wed, Jan 21 - Thu, Feb 5
SEA
Seattle
RAI
Santiago
$1,271 Roundtrip, found 1 day ago
$1,271
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Wed, Jan 21 from Seattle to Santiago, returning Thu, Feb 5, priced at $1,271 found 1 day ago
TAP Portugal
Sun, Feb 8 - Wed, Feb 18
SEA
Seattle
RAI
Santiago
$1,940 Roundtrip, found 6 days ago
$1,940
Roundtrip
found 6 days ago
Select TAP Portugal flight, departing Sun, Feb 8 from Seattle to Santiago, returning Wed, Feb 18, priced at $1,940 found 6 days ago
Flights from Seattle (SEA) to Santiago Island (RAI)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Praia Intl.
Airlines serving
TAP Portugal
Roundtrip price
$921
Distance
5862 mi

Seattle to Santiago Island Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Seattle 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 Seattle 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 Seattle to Santiago Island in 2025. You can also book with separate airlines for your outbound and return journeys, from $475 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 Seattle 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 Seattle 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 Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI) cost?
Grab a cheap one-way flight from $475 or cheap return flight from $922 from Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI)?
The cheapest month to fly from SEA to RAI is October, when there's less demand. Off-peak season is usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SEA to RAI. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI)?
You'll have to hop on a flight with a layover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from SEA to RAI?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI)?
Choose a flight from Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI) that leaves before 3 PM to reduce the likelihood of delays. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI) last-minute?
Holding off until just before your departure to book a ticket from SEA to RAI often results in higher prices. While you might find some last-minute discounts, they aren't always guaranteed. Be flexible with your travel plans to maximize your chances of landing a bargain.
Is it cheaper to book a SEA to RAI flight and hotel package?
You can save money by booking a SEA to RAI 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 convenient place. Once you've selected your preferred accommodations and flights, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Praia Intl. Airport (RAI)?
If you reserved your SEA to RAI flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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*Available to One Key members.