Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Santiago de los Caballeros from $491

This is the cheapest round-trip 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 4/19. 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.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Santiago de los Caballeros

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:40 pm - 12:10 pm
SEA
-
STI
10h 30m
1 stop
Delta Logo
6:00 am - 10:31 pm
STI
-
SEA
19h 31m
1 stop
$491Delta
Sun, Apr 19 - Fri, Apr 24
Delta Logo
11:59 pm - 7:33 pm
SEA
-
STI
16h 34m
2 stops
Delta Logo
8:59 pm - 12:25 pm
STI
-
SEA
18h 26m
2 stops
$495Delta
Sun, Apr 19 - Fri, Apr 24
United Airlines Logo
7:00 am - 10:52 pm
SEA
-
STI
12h 52m
2 stops
United Airlines Logo
6:00 am - 10:59 pm
STI
-
SEA
19h 59m
2 stops
$605United Airlines
Tue, May 5 - Thu, May 7
United Airlines Logo
7:00 am - 10:52 pm
SEA
-
STI
12h 52m
2 stops
United Airlines Logo
6:00 am - 9:58 pm
STI
-
SEA
18h 58m
2 stops
$615United Airlines
Tue, May 5 - Thu, May 7
United Airlines Logo
7:25 am - 10:52 pm
SEA
-
STI
12h 27m
1 stop
United Airlines Logo
6:00 am - 4:12 pm
STI
-
SEA
13h 12m
1 stop
$635United Airlines
Tue, May 5 - Thu, May 7
United Airlines Logo
11:39 am - 12:57 pm
SEA
-
STI
22h 18m
3 stops
United Airlines Logo
2:07 pm - 9:40 am
STI
-
SEA
22h 33m
2 stops
$639United Airlines
Tue, May 5 - Thu, May 7
United Airlines Logo
7:25 am - 10:52 pm
SEA
-
STI
12h 27m
1 stop
United Airlines Logo
6:00 am - 4:12 pm
STI
-
SEA
13h 12m
1 stop
$645United Airlines
Tue, May 5 - Thu, May 7
United Airlines Logo
11:39 am - 12:57 pm
SEA
-
STI
22h 18m
3 stops
United Airlines Logo
2:07 pm - 9:40 am
STI
-
SEA
22h 33m
2 stops
$649United Airlines
Tue, May 5 - Thu, May 7
American Airlines Logo
8:45 pm - 9:15 pm
SEA
-
STI
21h 30m
1 stop
American Airlines Logo
7:00 am - 11:42 pm
STI
-
SEA
19h 42m
1 stop
$898American Airlines
Fri, Jul 31 - Sat, Aug 8
American Airlines Logo
11:22 pm - 2:44 pm
SEA
-
STI
12h 22m
2 stops
American Airlines Logo
7:00 am - 11:42 pm
STI
-
SEA
19h 42m
1 stop
$971American Airlines
Fri, Jul 31 - Sat, Aug 8

Delta flights from Seattle to Santiago de los Caballeros

Our best Delta deals on Seattle to Santiago de los Caballeros flight tickets
Delta
Apr 19
SEA10:40 pmSeattle/Tacoma Intl
10h 30m
1 stop
STI12:10 pmSantiago de los Caballeros
Apr 24
STI6:00 amSantiago de los Caballeros
19h 31m
1 stop
SEA10:31 pmSeattle/Tacoma Intl
$491
Delta
Apr 19
SEA11:59 pmSeattle/Tacoma Intl
16h 34m
2 stops
STI7:33 pmSantiago de los Caballeros
Apr 24
STI8:59 pmSantiago de los Caballeros
18h 26m
2 stops
SEA12:25 pmSeattle/Tacoma Intl
$495

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 31
SEA8:45 pmSeattle/Tacoma Intl
21h 30m
1 stop
STI9:15 pmSantiago de los Caballeros
Aug 8
STI7:00 amSantiago de los Caballeros
19h 42m
1 stop
SEA11:42 pmSeattle/Tacoma Intl
$898
American Airlines
Jul 31
SEA11:22 pmSeattle/Tacoma Intl
12h 22m
2 stops
STI2:44 pmSantiago de los Caballeros
Aug 8
STI7:00 amSantiago de los Caballeros
19h 42m
1 stop
SEA11:42 pmSeattle/Tacoma Intl
$971
American Airlines
Jul 31
SEA11:22 pmSeattle/Tacoma Intl
12h 22m
2 stops
STI2:44 pmSantiago de los Caballeros
Aug 8
STI7:00 amSantiago de los Caballeros
14h 49m
2 stops
SEA6:49 pmSeattle/Tacoma Intl
$1,042

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 March 29, 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

Sun 4/19

10:40 pm-12:10 pm

1 stop10h 30m

Santiago de los Caballeros

Fri 4/24

6:00 am-10:31 pm

1 stop19h 31m

$491

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sun 4/19

11:59 pm-7:33 pm

2 stops16h 34m

Santiago de los Caballeros

Fri 4/24

8:59 pm-12:25 pm

2 stops18h 26m

$495

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 5/5

7:00 am-10:52 pm

2 stops12h 52m

Santiago de los Caballeros

Thu 5/7

6:00 am-10:59 pm

2 stops19h 59m

$605

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 5/5

7:00 am-10:52 pm

2 stops12h 52m

Santiago de los Caballeros

Thu 5/7

6:00 am-9:58 pm

2 stops18h 58m

$615
Quickest round-trip

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 5/5

7:25 am-10:52 pm

1 stop12h 27m

Santiago de los Caballeros

Thu 5/7

6:00 am-4:12 pm

1 stop13h 12m

$635

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 5/5

11:39 am-12:57 pm

3 stops22h 18m

Santiago de los Caballeros

Thu 5/7

2:07 pm-9:40 am

2 stops22h 33m

$639

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 5/5

7:25 am-10:52 pm

1 stop12h 27m

Santiago de los Caballeros

Thu 5/7

6:00 am-4:12 pm

1 stop13h 12m

$645

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 5/5

11:39 am-12:57 pm

3 stops22h 18m

Santiago de los Caballeros

Thu 5/7

2:07 pm-9:40 am

2 stops22h 33m

$649

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Fri 7/31

8:45 pm-9:15 pm

1 stop21h 30m

Santiago de los Caballeros

Sat 8/8

7:00 am-11:42 pm

1 stop19h 42m

$898

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Fri 7/31

11:22 pm-2:44 pm

2 stops12h 22m

Santiago de los Caballeros

Sat 8/8

7:00 am-11:42 pm

1 stop19h 42m

$971

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

10h 30m

Direct flights

None
The fastest flight from Seattle to Santiago de los Caballeros takes 10h 30m
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

  • 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 10h 30m.

  • 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
11,521 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.

An easier way to manage your Santiago de los Caballeros trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 4/28
Tue 5/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the Dominican Republic