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Cheap flights from Seattle to Santiago de los Caballeros from $511

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Santiago de los Caballeros departing on 6/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Santiago de los Caballeros

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:56 pm - 2:44 pm
SEA
-
STI
11h 48m
2 stops
American Airlines Logo
9:00 am - 12:07 am
STI
-
SEA
18h 07m
1 stop
$680American Airlines
Tue, Jul 21 - Tue, Aug 4
American Airlines Logo
11:57 pm - 2:13 pm
SEA
-
STI
11h 16m
2 stops
American Airlines Logo
1:40 pm - 11:25 pm
STI
-
SEA
12h 45m
1 stop
$686American Airlines
Thu, Oct 1 - Mon, Oct 12
American Airlines Logo
11:09 pm - 12:20 pm
SEA
-
STI
10h 11m
1 stop
American Airlines Logo
1:40 pm - 11:25 pm
STI
-
SEA
12h 45m
1 stop
$691American Airlines
Thu, Oct 1 - Mon, Oct 12
American Airlines Logo
5:34 pm - 2:13 pm
SEA
-
STI
17h 39m
2 stops
American Airlines Logo
1:40 pm - 11:25 pm
STI
-
SEA
12h 45m
1 stop
$696American Airlines
Thu, Oct 1 - Mon, Oct 12
American Airlines Logo
12:56 pm - 2:44 pm
SEA
-
STI
22h 48m
1 stop
American Airlines Logo
7:00 am - 12:20 am
STI
-
SEA
20h 20m
1 stop
$710American Airlines
Tue, Jul 28 - Mon, Aug 24
American Airlines Logo
8:45 pm - 2:44 pm
SEA
-
STI
14h 59m
1 stop
American Airlines Logo
9:00 am - 12:07 am
STI
-
SEA
18h 07m
1 stop
$712American Airlines
Tue, Jul 21 - Tue, Aug 4
American Airlines Logo
8:50 pm - 2:13 pm
SEA
-
STI
14h 23m
1 stop
American Airlines Logo
1:40 pm - 11:25 pm
STI
-
SEA
12h 45m
1 stop
$718American Airlines
Thu, Oct 1 - Mon, Oct 12
American Airlines Logo
5:31 pm - 12:20 pm
SEA
-
STI
15h 49m
2 stops
American Airlines Logo
1:40 pm - 11:25 pm
STI
-
SEA
12h 45m
1 stop
$723American Airlines
Thu, Oct 1 - Mon, Oct 12
American Airlines Logo
11:56 pm - 2:44 pm
SEA
-
STI
11h 48m
2 stops
American Airlines Logo
9:00 am - 9:05 pm
STI
-
SEA
15h 05m
2 stops
$724American Airlines
Tue, Jul 21 - Tue, Aug 4
American Airlines Logo
12:56 pm - 2:44 pm
SEA
-
STI
22h 48m
1 stop
American Airlines Logo
9:00 am - 12:07 am
STI
-
SEA
18h 07m
1 stop
$732American Airlines
Tue, Jul 21 - Tue, Aug 4

American Airlines flights from Seattle to Santiago de los Caballeros

Our best American Airlines deals on Seattle to Santiago de los Caballeros flight tickets
American Airlines
Jul 21
SEA11:56 pmSeattle/Tacoma Intl
11h 48m
2 stops
STI2:44 pmSantiago de los Caballeros
Aug 4
STI9:00 amSantiago de los Caballeros
18h 07m
1 stop
SEA12:07 amSeattle/Tacoma Intl
$680
American Airlines
Oct 1
SEA11:57 pmSeattle/Tacoma Intl
11h 16m
2 stops
STI2:13 pmSantiago de los Caballeros
Oct 12
STI1:40 pmSantiago de los Caballeros
12h 45m
1 stop
SEA11:25 pmSeattle/Tacoma Intl
$686
American Airlines
Oct 1
SEA11:09 pmSeattle/Tacoma Intl
10h 11m
1 stop
STI12:20 pmSantiago de los Caballeros
Oct 12
STI1:40 pmSantiago de los Caballeros
12h 45m
1 stop
SEA11:25 pmSeattle/Tacoma Intl
$691

United Airlines flights from Seattle to Santiago de los Caballeros

Our best United Airlines deals on Seattle to Santiago de los Caballeros flight tickets
United Airlines
May 26
SEA5:07 amSeattle/Tacoma Intl
14h 45m
2 stops
STI10:52 pmSantiago de los Caballeros
Jun 2
STI6:00 amSantiago de los Caballeros
14h 59m
2 stops
SEA5:59 pmSeattle/Tacoma Intl
$750
United Airlines
Sep 27
SEA10:58 pmSeattle/Tacoma Intl
10h 59m
1 stop
STI12:57 pmSantiago de los Caballeros
Oct 1
STI6:00 amSantiago de los Caballeros
18h 55m
1 stop
SEA9:55 pmSeattle/Tacoma Intl
$758
United Airlines
Sep 27
SEA11:13 pmSeattle/Tacoma Intl
20h 39m
2 stops
STI10:52 pmSantiago de los Caballeros
Oct 1
STI2:07 pmSantiago de los Caballeros
22h 29m
2 stops
SEA9:36 amSeattle/Tacoma Intl
$763

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Santiago de los Caballeros that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 25, 2026.
Use the filters below to find and compare flights from Seattle to Santiago de los Caballeros that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 7/21

11:56 pm-2:44 pm

2 stops11h 48m

Santiago de los Caballeros

Tue 8/4

9:00 am-12:07 am

1 stop18h 07m

$680

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 10/1

11:57 pm-2:13 pm

2 stops11h 16m

Santiago de los Caballeros

Mon 10/12

1:40 pm-11:25 pm

1 stop12h 45m

$686
Quickest round-trip

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 10/1

11:09 pm-12:20 pm

1 stop10h 11m

Santiago de los Caballeros

Mon 10/12

1:40 pm-11:25 pm

1 stop12h 45m

$691

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 10/1

5:34 pm-2:13 pm

2 stops17h 39m

Santiago de los Caballeros

Mon 10/12

1:40 pm-11:25 pm

1 stop12h 45m

$696

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 7/28

12:56 pm-2:44 pm

1 stop22h 48m

Santiago de los Caballeros

Mon 8/24

7:00 am-12:20 am

1 stop20h 20m

$710

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 7/21

8:45 pm-2:44 pm

1 stop14h 59m

Santiago de los Caballeros

Tue 8/4

9:00 am-12:07 am

1 stop18h 07m

$712

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 10/1

8:50 pm-2:13 pm

1 stop14h 23m

Santiago de los Caballeros

Mon 10/12

1:40 pm-11:25 pm

1 stop12h 45m

$718

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 10/1

5:31 pm-12:20 pm

2 stops15h 49m

Santiago de los Caballeros

Mon 10/12

1:40 pm-11:25 pm

1 stop12h 45m

$723

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 7/21

11:56 pm-2:44 pm

2 stops11h 48m

Santiago de los Caballeros

Tue 8/4

9:00 am-9:05 pm

2 stops15h 05m

$724

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 7/21

12:56 pm-2:44 pm

1 stop22h 48m

Santiago de los Caballeros

Tue 8/4

9:00 am-12:07 am

1 stop18h 07m

$732

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Santiago de los Caballeros from

How to get the cheapest flight ticket from Seattle to Santiago de los Caballeros

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Seattle to Santiago de los Caballeros flights?

You could potentially save up to 50% on your flight if you consider stops on a Seattle to Santiago de los Caballeros flight.

When to book flights from Seattle to Santiago de los Caballeros

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Santiago de los Caballeros according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Santiago de los Caballeros (SEA to STI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Santiago de los Caballeros

Fastest flight time

17h 45m

Direct flights

None
The fastest flight from Seattle to Santiago de los Caballeros takes 17h 45m
There are no direct flights from Seattle to Santiago de los Caballeros. There are no popular flight routes from Seattle to Santiago de los Caballeros.
Search flight deals

Frequently asked questions about flying from Seattle to Santiago de los Caballeros

  • How far is Seattle/Tacoma Intl to Santiago de los Caballeros by plane?

    The distance between Seattle/Tacoma Intl and Santiago de los Caballeros is about 3464.4 mi. In terms of flight time, this usually takes a little over 17h 45m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport.

  • What documentation or ID do you need to fly to Santiago de los Caballeros Airport?

    The travel and health documents you'll need for your trip to Santiago de los Caballeros Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Santiago de los Caballeros Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Santiago de los Caballeros?

Best airlines flying from Seattle to Santiago de los Caballeros

Compare and see reviews for airlines that fly from Seattle to Santiago de los Caballeros with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $501Free CancellationRating
7.1
11,626 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Santiago de los Caballeros?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Santiago de los Caballeros from Seattle.

Can I find flights from Seattle to Santiago de los Caballeros with flexible booking policies on momondo?

Flights from Seattle to Santiago de los Caballeros with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Santiago de los Caballeros?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Santiago de los Caballeros from Seattle.

I’m not ready to book a flight from Seattle to Santiago de los Caballeros right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to Santiago de los Caballeros flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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