$213 Cheap Flights from Seattle (SEA) to Santiago (STI)

View $213 flight on Thu, Jan 8, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Cibao Intl. Airport (STI)

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Cheap Flights from Seattle to Santiago (SEA-STI)

Prices were available within the past 7 days and start at $213 for one-way flights and $450 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Jan 23 - Sat, Jan 31
SEA
Seattle
STI
Santiago de los Caballeros
$450 Roundtrip, found 13 hours ago
$450
Roundtrip
found 13 hours ago
Select Delta flight, departing Fri, Jan 23 from Seattle to Santiago de los Caballeros, returning Sat, Jan 31, priced at $450 found 13 hours ago
United
Fri, Jan 23 - Sat, Jan 31
SEA
Seattle
STI
Santiago de los Caballeros
$450 Roundtrip, found 13 hours ago
$450
Roundtrip
found 13 hours ago
Select United flight, departing Fri, Jan 23 from Seattle to Santiago de los Caballeros, returning Sat, Jan 31, priced at $450 found 13 hours ago
American Airlines
Fri, Jan 23 - Sat, Jan 31
SEA
Seattle
STI
Santiago de los Caballeros
$454 Roundtrip, found 13 hours ago
$454
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Fri, Jan 23 from Seattle to Santiago de los Caballeros, returning Sat, Jan 31, priced at $454 found 13 hours ago
American Airlines
Fri, Jan 23 - Sun, Feb 1
SEA
Seattle
STI
Santiago de los Caballeros
$459 Roundtrip, found 1 day ago
$459
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Jan 23 from Seattle to Santiago de los Caballeros, returning Sun, Feb 1, priced at $459 found 1 day ago
American Airlines
Fri, Jan 23 - Sat, Jan 31
SEA
Seattle
STI
Santiago de los Caballeros
$462 Roundtrip, found 13 hours ago
$462
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Fri, Jan 23 from Seattle to Santiago de los Caballeros, returning Sat, Jan 31, priced at $462 found 13 hours ago
American Airlines
Mon, Jan 12 - Tue, Jan 27
SEA
Seattle
STI
Santiago de los Caballeros
$462 Roundtrip, found 2 days ago
$462
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jan 12 from Seattle to Santiago de los Caballeros, returning Tue, Jan 27, priced at $462 found 2 days ago
American Airlines
Fri, Jan 23 - Sat, Jan 31
SEA
Seattle
STI
Santiago de los Caballeros
$464 Roundtrip, found 13 hours ago
$464
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Fri, Jan 23 from Seattle to Santiago de los Caballeros, returning Sat, Jan 31, priced at $464 found 13 hours ago
American Airlines
Fri, Jan 23 - Sat, Jan 31
SEA
Seattle
STI
Santiago de los Caballeros
$465 Roundtrip, found 13 hours ago
$465
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Fri, Jan 23 from Seattle to Santiago de los Caballeros, returning Sat, Jan 31, priced at $465 found 13 hours ago
American Airlines
Wed, Jan 14 - Fri, Jan 23
SEA
Seattle
STI
Santiago de los Caballeros
$467 Roundtrip, found 3 days ago
$467
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Jan 14 from Seattle to Santiago de los Caballeros, returning Fri, Jan 23, priced at $467 found 3 days ago
JetBlue Airways
Wed, Jun 10 - Thu, Jun 25
SEA
Seattle
STI
Santiago de los Caballeros
$837 Roundtrip, found 22 hours ago
$837
Roundtrip
found 22 hours ago
Select JetBlue Airways flight, departing Wed, Jun 10 from Seattle to Santiago de los Caballeros, returning Thu, Jun 25, priced at $837 found 22 hours ago

Find the cheapest month to fly from Seattle (SEA) to Santiago de los Caballeros (STI)

February is typically the cheapest month to fly

From $439 - $826 per traveler.

Alternative airports near Santiago de los Caballeros

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gregorio Luperon Intl. POP. Average driving time to city center is 59 minutes. Flights from $662
POP
Gregorio Luperon Intl.
Average driving time to city center59 min
Flights from $662

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Cibao Intl. Airport (STI) cost?
Lock in a cheap one-way flight from $213 or cheap return flight from $450 from Seattle - Tacoma Intl. Airport (SEA) to Cibao Intl. Airport (STI) 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 Cibao Intl. Airport (STI)?
January is the cheapest month to fly from SEA to STI. Timing your trip outside of the busy season is often the key to better flight prices.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Cibao Intl. Airport (STI)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from SEA to STI. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Cibao Intl. Airport (STI)?
Direct flights from Seattle - Tacoma Intl. Airport (SEA) to Cibao Intl. Airport (STI) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to STI?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a range of factors, including the time of year and airline.*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 Cibao Intl. Airport (STI)?
To reach Cibao Intl. Airport (STI) without delays, opt for a flight that leaves Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Cibao Intl. Airport (STI) last-minute?
Last-minute fares from SEA to STI are typically more expensive. To lock in the best rates, start searching for flights well in advance. That being said, if you can play around with your travel dates, you may find a cheap fare right before your trip.
Is it cheaper to book a SEA to STI flight and hotel package?
Compared with arranging hotels and flights separately, booking a SEA to STI flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place will take the stress out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Cibao Intl. Airport (STI)?
In most instances, you can reschedule or cancel your SEA to STI flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you want further details, head to our Customer Service portal.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Cibao Intl.
Airlines serving
American Airlines, Delta, JetBlue Airways, United
Roundtrip price
$449
Distance
3468 mi

Book with confidence

Seattle to Santiago Flights

The cheapest times to fly from Seattle to Santiago

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

 

The best time to book a flight from Seattle to Santiago

Sunday is one of the best days to book for cheap flights from Seattle to Santiago: 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

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 in 2025. You can also book with separate airlines for your outbound and return journeys, from $213 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 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 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.

 

Seattle to Santiago Flights

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*Available to One Key members.