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Cheap flights from Washington to Santiago de los Caballeros from $364

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Santiago de los Caballeros departing on 7/1. 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

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Find the cheapest flights from Washington to Santiago de los Caballeros

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
4:00 pm - 12:10 pm
SEA
-
STI
17h 10m
1 stop
Delta Logo
6:00 am - 10:31 pm
STI
-
SEA
19h 31m
1 stop
$491Delta
Fri, May 1 - Tue, May 5
Delta Logo
5:59 pm - 12:10 pm
SEA
-
STI
15h 11m
2 stops
Delta Logo
6:00 am - 7:59 pm
STI
-
SEA
16h 59m
1 stop
$495Delta
Wed, Apr 22 - Fri, May 1
Delta Logo
10:40 pm - 7:33 pm
SEA
-
STI
17h 53m
1 stop
Delta Logo
6:00 am - 10:31 pm
STI
-
SEA
19h 31m
1 stop
$534Delta
Fri, May 1 - Tue, May 5
Delta Logo
5:59 pm - 12:10 pm
SEA
-
STI
15h 11m
2 stops
Delta Logo
6:00 am - 8:37 pm
STI
-
SEA
17h 37m
2 stops
$538Delta
Wed, Apr 22 - Fri, May 1
American Airlines Logo
8:45 pm - 9:13 pm
SEA
-
STI
21h 28m
1 stop
American Airlines Logo
9:06 am - 12:08 am
STI
-
SEA
18h 02m
1 stop
$579American Airlines
Fri, Jun 5 - Wed, Jun 10
American Airlines Logo
6:19 pm - 12:23 pm
SEA
-
STI
15h 04m
2 stops
American Airlines Logo
1:32 pm - 9:35 am
STI
-
SEA
23h 03m
2 stops
$598American Airlines
Wed, Apr 22 - Fri, May 1
United Airlines Logo
7:25 am - 10:52 pm
SEA
-
STI
12h 27m
1 stop
United Airlines Logo
2:07 pm - 11:59 pm
STI
-
SEA
12h 52m
1 stop
$601United Airlines
Sat, May 2 - Wed, May 6
United Airlines Logo
11:39 am - 12:57 pm
SEA
-
STI
22h 18m
3 stops
United Airlines Logo
6:00 am - 9:58 pm
STI
-
SEA
18h 58m
2 stops
$605United Airlines
Sat, May 2 - Wed, May 6
United Airlines Logo
7:14 pm - 3:12 pm
PDX
-
STI
16h 58m
2 stops
United Airlines Logo
2:07 pm - 9:38 am
STI
-
PDX
22h 31m
2 stops
$673United Airlines
Mon, Apr 27 - Fri, May 1
American Airlines Logo
10:28 pm - 12:23 pm
PDX
-
STI
10h 55m
1 stop
American Airlines Logo
7:03 am - 10:53 pm
STI
-
PDX
18h 50m
2 stops
$1,157American Airlines
Sat, May 9 - Sat, May 30

American Airlines flights from State of Washington to Santiago de los Caballeros

Our best American Airlines deals on State of Washington to Santiago de los Caballeros flight tickets
American Airlines
Jun 5
SEA8:45 pmSeattle/Tacoma Intl
21h 28m
1 stop
STI9:13 pmSantiago de los Caballeros
Jun 10
STI9:06 amSantiago de los Caballeros
18h 02m
1 stop
SEA12:08 amSeattle/Tacoma Intl
$579
American Airlines
Apr 22
SEA6:19 pmSeattle/Tacoma Intl
15h 04m
2 stops
STI12:23 pmSantiago de los Caballeros
May 1
STI1:32 pmSantiago de los Caballeros
23h 03m
2 stops
SEA9:35 amSeattle/Tacoma Intl
$598
American Airlines
Apr 22
SEA10:16 pmSeattle/Tacoma Intl
11h 07m
1 stop
STI12:23 pmSantiago de los Caballeros
May 1
STI1:32 pmSantiago de los Caballeros
13h 12m
1 stop
SEA11:44 pmSeattle/Tacoma Intl
$664

United Airlines flights from State of Washington to Santiago de los Caballeros

Our best United Airlines deals on State of Washington to Santiago de los Caballeros flight tickets
United Airlines
May 2
SEA7:25 amSeattle/Tacoma Intl
12h 27m
1 stop
STI10:52 pmSantiago de los Caballeros
May 6
STI2:07 pmSantiago de los Caballeros
12h 52m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
$601
United Airlines
May 2
SEA7:25 amSeattle/Tacoma Intl
12h 27m
1 stop
STI10:52 pmSantiago de los Caballeros
May 6
STI6:00 amSantiago de los Caballeros
16h 48m
2 stops
SEA7:48 pmSeattle/Tacoma Intl
$605
United Airlines
May 2
SEA11:00 pmSeattle/Tacoma Intl
10h 57m
1 stop
STI12:57 pmSantiago de los Caballeros
May 6
STI2:07 pmSantiago de los Caballeros
12h 52m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
$621

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 22, 2026.
Use the filters below to find and compare flights from Washington 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

Fri 5/1

4:00 pm-12:10 pm

1 stop17h 10m

Santiago de los Caballeros

Tue 5/5

6:00 am-10:31 pm

1 stop19h 31m

$491

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Wed 4/22

5:59 pm-12:10 pm

2 stops15h 11m

Santiago de los Caballeros

Fri 5/1

6:00 am-7:59 pm

1 stop16h 59m

$495

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Fri 5/1

10:40 pm-7:33 pm

1 stop17h 53m

Santiago de los Caballeros

Tue 5/5

6:00 am-10:31 pm

1 stop19h 31m

$534

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Wed 4/22

5:59 pm-12:10 pm

2 stops15h 11m

Santiago de los Caballeros

Fri 5/1

6:00 am-8:37 pm

2 stops17h 37m

$538

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Fri 6/5

8:45 pm-9:13 pm

1 stop21h 28m

Santiago de los Caballeros

Wed 6/10

9:06 am-12:08 am

1 stop18h 02m

$579

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Wed 4/22

6:19 pm-12:23 pm

2 stops15h 04m

Santiago de los Caballeros

Fri 5/1

1:32 pm-9:35 am

2 stops23h 03m

$598
Quickest round-trip

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sat 5/2

7:25 am-10:52 pm

1 stop12h 27m

Santiago de los Caballeros

Wed 5/6

2:07 pm-11:59 pm

1 stop12h 52m

$601

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sat 5/2

11:39 am-12:57 pm

3 stops22h 18m

Santiago de los Caballeros

Wed 5/6

6:00 am-9:58 pm

2 stops18h 58m

$605

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Mon 4/27

7:14 pm-3:12 pm

2 stops16h 58m

Santiago de los Caballeros

Fri 5/1

2:07 pm-9:38 am

2 stops22h 31m

$673

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Sat 5/9

10:28 pm-12:23 pm

1 stop10h 55m

Santiago de los Caballeros

Sat 5/30

7:03 am-10:53 pm

2 stops18h 50m

$1,157

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 State of Washington 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 State of Washington to Santiago de los Caballeros flights?

You could potentially save up to 6% on your flight if you consider stops on a State of Washington to Santiago de los Caballeros flight.

Cheap State of Washington to Santiago de los Caballeros flight deals and tips

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

Fastest flight time

11h 03m

Direct flights

None
The fastest flight from State of Washington to Santiago de los Caballeros takes 11h 03m
There are no direct flights from State of Washington to Santiago de los Caballeros. There are no popular flight routes from State of Washington to Santiago de los Caballeros.
Search flight deals

  • When did momondo last update prices for flights from Washington to Santiago de los Caballeros Airport?

    Prices for flights from Washington to Santiago de los Caballeros Airport are updated daily.

  • How many operators does momondo search for flights from Washington to Santiago de los Caballeros Airport?

  • How old do you have to be to fly from Washington to Santiago de los Caballeros Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington 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 required for your trip to Santiago de los Caballeros Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Santiago de los Caballeros Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from State of Washington to Santiago de los Caballeros

Compare and see reviews for airlines that fly from State of Washington to Santiago de los Caballeros with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $501Free CancellationRating
7.1
11,488 reviews
Search American Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Santiago de los Caballeros for you.

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

Yes. All flights to Santiago de los Caballeros from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Santiago de los Caballeros from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Washington 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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