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Cheap flights from Seattle to Santiago de los Caballeros from $317

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 11/25. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Santiago de los Caballeros

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
9:40 pm - 1:21 am
SEA
-
STI
24h 41m
2 stops
JetBlue Logo
6:30 am - 9:15 pm
STI
-
SEA
17h 45m
1 stop
$697JetBlue
Sat, Oct 3 - Sat, Oct 17
JetBlue Logo
9:40 pm - 10:47 am
SEA
-
STI
10h 07m
1 stop
JetBlue Logo
6:30 am - 9:15 pm
STI
-
SEA
17h 45m
1 stop
$706JetBlue
Sat, Oct 3 - Sat, Oct 17
American Airlines Logo
8:50 pm - 2:15 pm
SEA
-
STI
14h 25m
1 stop
American Airlines Logo
3:16 pm - 11:59 pm
STI
-
SEA
11h 43m
1 stop
$711American Airlines
Thu, Oct 1 - Mon, Oct 12
American Airlines Logo
8:50 pm - 2:15 pm
SEA
-
STI
14h 25m
1 stop
American Airlines Logo
3:16 pm - 9:33 am
STI
-
SEA
21h 17m
2 stops
$716American Airlines
Thu, Oct 1 - Mon, Oct 12
American Airlines Logo
5:00 am - 9:07 pm
SEA
-
STI
13h 07m
2 stops
American Airlines Logo
3:35 pm - 12:20 am
STI
-
SEA
11h 45m
1 stop
$718American Airlines
Fri, Aug 21 - Fri, Aug 28
JetBlue Logo
9:40 pm - 1:21 am
SEA
-
STI
24h 41m
2 stops
JetBlue Logo
6:30 am - 9:15 pm
STI
-
SEA
17h 45m
2 stops
$723JetBlue
Sat, Oct 3 - Sat, Oct 17
United Airlines Logo
11:00 pm - 3:12 pm
SEA
-
STI
13h 12m
2 stops
United Airlines Logo
2:07 pm - 11:36 pm
STI
-
SEA
12h 29m
1 stop
$754United Airlines
Sat, Sep 5 - Sat, Sep 12
American Airlines Logo
5:00 am - 9:07 pm
SEA
-
STI
13h 07m
2 stops
American Airlines Logo
7:00 am - 8:52 pm
STI
-
SEA
16h 52m
2 stops
$755American Airlines
Fri, Aug 21 - Fri, Aug 28
United Airlines Logo
11:00 pm - 3:12 pm
SEA
-
STI
13h 12m
2 stops
United Airlines Logo
6:00 am - 7:15 pm
STI
-
SEA
16h 15m
2 stops
$759United Airlines
Sat, Sep 5 - Sat, Sep 12
American Airlines Logo
12:40 am - 9:07 pm
SEA
-
STI
17h 27m
2 stops
American Airlines Logo
8:30 am - 11:21 pm
STI
-
SEA
17h 51m
2 stops
$760American Airlines
Thu, Sep 3 - Tue, Sep 8

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JetBlue flights from Seattle to Santiago de los Caballeros

Our best JetBlue deals on Seattle to Santiago de los Caballeros flight tickets
JetBlue
Oct 3
SEA9:40 pmSeattle/Tacoma Intl
24h 41m
2 stops
STI1:21 amSantiago de los Caballeros
Oct 17
STI6:30 amSantiago de los Caballeros
17h 45m
1 stop
SEA9:15 pmSeattle/Tacoma Intl
$697
JetBlue
Oct 3
SEA9:40 pmSeattle/Tacoma Intl
10h 07m
1 stop
STI10:47 amSantiago de los Caballeros
Oct 17
STI6:30 amSantiago de los Caballeros
17h 45m
1 stop
SEA9:15 pmSeattle/Tacoma Intl
$706
JetBlue
Oct 3
SEA9:40 pmSeattle/Tacoma Intl
24h 41m
2 stops
STI1:21 amSantiago de los Caballeros
Oct 17
STI6:30 amSantiago de los Caballeros
17h 45m
2 stops
SEA9:15 pmSeattle/Tacoma Intl
$723

Delta flights from Seattle to Santiago de los Caballeros

Our best Delta deals on Seattle to Santiago de los Caballeros flight tickets
Delta
Sep 6
SEA5:30 amSeattle/Tacoma Intl
17h 25m
2 stops
STI1:55 amSantiago de los Caballeros
Sep 13
STI7:30 pmSantiago de los Caballeros
17h 45m
1 stop
SEA10:15 amSeattle/Tacoma Intl
$892
Delta
Sep 5
SEA10:40 pmSeattle/Tacoma Intl
10h 50m
1 stop
STI12:30 pmSantiago de los Caballeros
Sep 9
STI1:55 pmSantiago de los Caballeros
12h 25m
1 stop
SEA11:20 pmSeattle/Tacoma Intl
$905
Delta
Jul 21
SEA7:15 amSeattle/Tacoma Intl
15h 40m
1 stop
STI1:55 amSantiago de los Caballeros
Jul 28
STI6:00 amSantiago de los Caballeros
17h 46m
2 stops
SEA8:46 pmSeattle/Tacoma Intl
$912

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 July 10, 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

Sat 10/3

9:40 pm-1:21 am

2 stops24h 41m

Santiago de los Caballeros

Sat 10/17

6:30 am-9:15 pm

1 stop17h 45m

$697

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sat 10/3

9:40 pm-10:47 am

1 stop10h 07m

Santiago de los Caballeros

Sat 10/17

6:30 am-9:15 pm

1 stop17h 45m

$706

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 10/1

8:50 pm-2:15 pm

1 stop14h 25m

Santiago de los Caballeros

Mon 10/12

3:16 pm-11:59 pm

1 stop11h 43m

$711

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 10/1

8:50 pm-2:15 pm

1 stop14h 25m

Santiago de los Caballeros

Mon 10/12

3:16 pm-9:33 am

2 stops21h 17m

$716
Quickest round-trip

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Fri 8/21

5:00 am-9:07 pm

2 stops13h 07m

Santiago de los Caballeros

Fri 8/28

3:35 pm-12:20 am

1 stop11h 45m

$718

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sat 10/3

9:40 pm-1:21 am

2 stops24h 41m

Santiago de los Caballeros

Sat 10/17

6:30 am-9:15 pm

2 stops17h 45m

$723

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sat 9/5

11:00 pm-3:12 pm

2 stops13h 12m

Santiago de los Caballeros

Sat 9/12

2:07 pm-11:36 pm

1 stop12h 29m

$754

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Fri 8/21

5:00 am-9:07 pm

2 stops13h 07m

Santiago de los Caballeros

Fri 8/28

7:00 am-8:52 pm

2 stops16h 52m

$755

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sat 9/5

11:00 pm-3:12 pm

2 stops13h 12m

Santiago de los Caballeros

Sat 9/12

6:00 am-7:15 pm

2 stops16h 15m

$759

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 9/3

12:40 am-9:07 pm

2 stops17h 27m

Santiago de los Caballeros

Tue 9/8

8:30 am-11:21 pm

2 stops17h 51m

$760

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

What is the typical price of a round-trip flight between Seattle and Santiago de los Caballeros?

What is the cheapest month to fly to Santiago de los Caballeros?

The cheapest month to fly to Santiago de los Caballeros from Seattle is in November. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel to Santiago de los Caballeros during the month of November, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $0.

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

11h 10m

Direct flights

None
The fastest flight from Seattle to Santiago de los Caballeros takes 11h 10m
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 11h 10m.

  • 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
11,802 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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