$459 Cheap Flights from Seattle (SEA) to Santiago (SCL)

View $459 flight on Thu, Sep 25, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Seattle to Santiago (SEA-SCL)

Prices were available within the past 7 days and start at $459 for one-way flights and $830 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, May 7 - Wed, May 14
SEA
Seattle
SCL
Santiago
$830 Roundtrip, found 1 hour ago
$830
Roundtrip
found 1 hour ago
Select United flight, departing Wed, May 7 from Seattle to Santiago, returning Wed, May 14, priced at $830 found 1 hour ago
United
Wed, May 7 - Wed, May 14
SEA
Seattle
SCL
Santiago
$850 Roundtrip, found 1 hour ago
$850
Roundtrip
found 1 hour ago
Select United flight, departing Wed, May 7 from Seattle to Santiago, returning Wed, May 14, priced at $850 found 1 hour ago
United
Thu, May 1 - Thu, May 8
SEA
Seattle
SCL
Santiago
$887 Roundtrip, found 3 days ago
$887
Roundtrip
found 3 days ago
Select United flight, departing Thu, May 1 from Seattle to Santiago, returning Thu, May 8, priced at $887 found 3 days ago
United
Sat, Apr 26 - Thu, May 1
SEA
Seattle
SCL
Santiago
$900 Roundtrip, found 1 day ago
$900
Roundtrip
found 1 day ago
Select United flight, departing Sat, Apr 26 from Seattle to Santiago, returning Thu, May 1, priced at $900 found 1 day ago
United
Wed, May 7 - Wed, May 14
SEA
Seattle
SCL
Santiago
$907 Roundtrip, found 1 hour ago
$907
Roundtrip
found 1 hour ago
Select United flight, departing Wed, May 7 from Seattle to Santiago, returning Wed, May 14, priced at $907 found 1 hour ago
Copa
Sat, Apr 26 - Thu, May 1
SEA
Seattle
SCL
Santiago
$920 Roundtrip, found 1 day ago
$920
Roundtrip
found 1 day ago
Select Copa flight, departing Sat, Apr 26 from Seattle to Santiago, returning Thu, May 1, priced at $920 found 1 day ago
Copa
Wed, May 7 - Wed, May 14
SEA
Seattle
SCL
Santiago
$927 Roundtrip, found 1 hour ago
$927
Roundtrip
found 1 hour ago
Select Copa flight, departing Wed, May 7 from Seattle to Santiago, returning Wed, May 14, priced at $927 found 1 hour ago
American Airlines
Sun, Nov 16 - Fri, Nov 21
SEA
Seattle
SCL
Santiago
$934 Roundtrip, found 3 hours ago
$934
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sun, Nov 16 from Seattle to Santiago, returning Fri, Nov 21, priced at $934 found 3 hours ago
Delta
Sun, Nov 16 - Fri, Nov 21
SEA
Seattle
SCL
Santiago
$934 Roundtrip, found 3 hours ago
$934
Roundtrip
found 3 hours ago
Select Delta flight, departing Sun, Nov 16 from Seattle to Santiago, returning Fri, Nov 21, priced at $934 found 3 hours ago
Aeromexico
Mon, Nov 3 - Wed, Nov 12
SEA
Seattle
SCL
Santiago
$968 Roundtrip, found 6 days ago
$968
Roundtrip
found 6 days ago
Select Aeromexico flight, departing Mon, Nov 3 from Seattle to Santiago, returning Wed, Nov 12, priced at $968 found 6 days ago
Flights from Seattle (SEA) to Santiago (SCL)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Arturo Merino Benitez
Airlines serving
Aeromexico, Air Canada, American Airlines, Copa, Delta, LATAM Airlines Group, United, avianca
Roundtrip price
$830
Distance
6432 mi

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 May. 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 $459 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.

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Arturo Merino Benitez Airport (SCL) cost?
Discover the latest flight deals from SEA to SCL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SEA to SCL?
The cheapest flights from SEA to SCL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SEA to SCL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SEA to SCL. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Arturo Merino Benitez Airport (SCL)?
Direct flights from Seattle - Tacoma Intl. Airport (SEA) to Arturo Merino Benitez Airport (SCL) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from SEA to SCL?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on a range of factors, such as the season 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 Arturo Merino Benitez Airport (SCL)?
To touch down at Arturo Merino Benitez Airport (SCL) on time, choose a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Arturo Merino Benitez Airport (SCL) last-minute?
Booking your flight from SEA to SCL right before your trip is typically more expensive. However, if you’re flexible with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book a SEA to SCL flight and hotel package?
Compared with arranging hotels and flights separately, booking a SEA to SCL flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place will take the hassle out of travel planning. Simply pick your flights and select from our wide range of hotels, then customize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Arturo Merino Benitez Airport (SCL)?
Typically, you’re able to cancel or reschedule your SEA to SCL flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline’s rules and fees on flight changes, or if you want more details, go to our Customer Service portal.

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*Available to One Key members.