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Cheap flights from Santiago de los Caballeros to Washington, D.C. from $172

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Santiago de los Caballeros to Washington, D.C. departing on 2/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Santiago de los Caballeros to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Copa Airlines Logo
3:51 pm - 3:15 am
STI
-
IAD
12h 24m
1 stop
Copa Airlines Logo
3:35 pm - 2:56 pm
IAD
-
STI
22h 21m
1 stop
$517Copa Airlines
Sat, Feb 28 - Wed, Mar 4
Delta Logo
6:39 am - 7:09 pm
STI
-
IAD
13h 30m
1 stop
Delta Logo
12:24 pm - 1:34 am
IAD
-
STI
12h 10m
1 stop
$530Delta
Fri, Feb 27 - Wed, Mar 4
Delta Logo
6:39 am - 7:09 pm
STI
-
IAD
13h 30m
1 stop
Delta Logo
12:24 pm - 8:34 pm
IAD
-
STI
7h 10m
1 stop
$541Delta
Fri, Feb 27 - Tue, Mar 3
American Airlines Logo
8:00 am - 8:30 pm
STI
-
IAD
13h 30m
2 stops
American Airlines Logo
11:30 am - 9:30 pm
IAD
-
STI
9h 00m
2 stops
$545American Airlines
Fri, Feb 27 - Tue, Mar 3
Delta Logo
6:39 am - 7:09 pm
STI
-
IAD
13h 30m
1 stop
Delta Logo
12:24 pm - 1:34 am
IAD
-
STI
12h 10m
1 stop
$588Delta
Sat, Feb 28 - Wed, Mar 4
Delta Logo
6:39 am - 7:09 pm
STI
-
IAD
13h 30m
1 stop
Delta Logo
12:24 pm - 8:34 pm
IAD
-
STI
7h 10m
1 stop
$597Delta
Sat, Feb 28 - Tue, Mar 3
American Airlines Logo
8:00 am - 8:30 pm
STI
-
IAD
13h 30m
2 stops
American Airlines Logo
11:30 am - 9:30 pm
IAD
-
STI
9h 00m
2 stops
$599American Airlines
Wed, Feb 18 - Wed, Feb 25
Delta Logo
9:59 pm - 11:44 am
STI
-
IAD
14h 45m
1 stop
Delta Logo
12:24 pm - 8:34 pm
IAD
-
STI
7h 10m
1 stop
$628Delta
Wed, Feb 18 - Wed, Feb 25
United Airlines Logo
4:00 pm - 11:21 pm
STI
-
IAD
8h 21m
1 stop
United Airlines Logo
6:00 am - 2:53 pm
IAD
-
STI
7h 53m
1 stop
$647United Airlines
Fri, Feb 13 - Thu, Mar 5
American Airlines Logo
1:30 pm - 8:48 am
STI
-
IAD
19h 18m
2 stops
American Airlines Logo
2:03 pm - 12:30 pm
IAD
-
STI
22h 27m
2 stops
$681American Airlines
Sat, Mar 28 - Sun, Apr 5

American Airlines flights from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport

Our best American Airlines deals on Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Feb 27
STI8:00 amSantiago de los Caballeros
13h 30m
2 stops
IAD8:30 pmWashington, D.C. Dulles Intl
Mar 3
IAD11:30 amWashington, D.C. Dulles Intl
9h 00m
2 stops
STI9:30 pmSantiago de los Caballeros
$545
American Airlines
Feb 18
STI8:00 amSantiago de los Caballeros
13h 30m
2 stops
IAD8:30 pmWashington, D.C. Dulles Intl
Feb 25
IAD11:30 amWashington, D.C. Dulles Intl
9h 00m
2 stops
STI9:30 pmSantiago de los Caballeros
$599
American Airlines
Mar 28
STI1:30 pmSantiago de los Caballeros
19h 18m
2 stops
IAD8:48 amWashington, D.C. Dulles Intl
Apr 5
IAD2:03 pmWashington, D.C. Dulles Intl
22h 27m
2 stops
STI12:30 pmSantiago de los Caballeros
$681

Delta flights from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Feb 27
STI6:39 amSantiago de los Caballeros
13h 30m
1 stop
IAD7:09 pmWashington, D.C. Dulles Intl
Mar 4
IAD12:24 pmWashington, D.C. Dulles Intl
12h 10m
1 stop
STI1:34 amSantiago de los Caballeros
$530
Delta
Feb 27
STI6:39 amSantiago de los Caballeros
13h 30m
1 stop
IAD7:09 pmWashington, D.C. Dulles Intl
Mar 3
IAD12:24 pmWashington, D.C. Dulles Intl
7h 10m
1 stop
STI8:34 pmSantiago de los Caballeros
$541
Delta
Feb 28
STI6:39 amSantiago de los Caballeros
13h 30m
1 stop
IAD7:09 pmWashington, D.C. Dulles Intl
Mar 4
IAD12:24 pmWashington, D.C. Dulles Intl
12h 10m
1 stop
STI1:34 amSantiago de los Caballeros
$588

momondo Fare Finder

 
Customize your flight search to find flights from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport 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 January 29, 2026.
Use the filters below to find and compare flights from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Sat 2/28

3:51 pm-3:15 am

1 stop12h 24m

Washington, D.C. Dulles Intl

Wed 3/4

3:35 pm-2:56 pm

1 stop22h 21m

$517

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Fri 2/27

6:39 am-7:09 pm

1 stop13h 30m

Washington, D.C. Dulles Intl

Wed 3/4

12:24 pm-1:34 am

1 stop12h 10m

$530

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Fri 2/27

6:39 am-7:09 pm

1 stop13h 30m

Washington, D.C. Dulles Intl

Tue 3/3

12:24 pm-8:34 pm

1 stop7h 10m

$541

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Fri 2/27

8:00 am-8:30 pm

2 stops13h 30m

Washington, D.C. Dulles Intl

Tue 3/3

11:30 am-9:30 pm

2 stops9h 00m

$545

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Sat 2/28

6:39 am-7:09 pm

1 stop13h 30m

Washington, D.C. Dulles Intl

Wed 3/4

12:24 pm-1:34 am

1 stop12h 10m

$588

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Sat 2/28

6:39 am-7:09 pm

1 stop13h 30m

Washington, D.C. Dulles Intl

Tue 3/3

12:24 pm-8:34 pm

1 stop7h 10m

$597

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Wed 2/18

8:00 am-8:30 pm

2 stops13h 30m

Washington, D.C. Dulles Intl

Wed 2/25

11:30 am-9:30 pm

2 stops9h 00m

$599

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Wed 2/18

9:59 pm-11:44 am

1 stop14h 45m

Washington, D.C. Dulles Intl

Wed 2/25

12:24 pm-8:34 pm

1 stop7h 10m

$628

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Fri 2/13

4:00 pm-11:21 pm

1 stop8h 21m

Washington, D.C. Dulles Intl

Thu 3/5

6:00 am-2:53 pm

1 stop7h 53m

$647

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Sat 3/28

1:30 pm-8:48 am

2 stops19h 18m

Washington, D.C. Dulles Intl

Sun 4/5

2:03 pm-12:30 pm

2 stops22h 27m

$681

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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When to book flights from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport

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

Cheap Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport (STI to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport

Fastest flight time

8h 18m

Direct flights

None
The fastest flight from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport takes 8h 18m
There are no direct flights from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport.
Search flight deals

  • How far is Santiago de los Caballeros to Washington, D.C. Dulles Intl by plane?

    The straight-line distance from Santiago de los Caballeros to Washington, D.C. Dulles Intl is 1405.2 mi. In terms of flight time, this usually takes a little over 8h 18m.

  • When did momondo last update prices for flights from Santiago de los Caballeros Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Santiago de los Caballeros Airport to Washington, D.C. Dulles Intl Airport are updated daily.

  • How old do you have to be to fly from Santiago de los Caballeros Airport to Washington, D.C. Dulles Intl 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 Santiago de los Caballeros Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport?

    Confirm your travel details to search for the latest offers for flights from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Sterling
Fairfax
Linthicum Heights

Why use momondo?

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

Finding the right flight to Washington, D.C. from Santiago de los Caballeros is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Santiago de los Caballeros to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from Santiago de los Caballeros to Washington, D.C.?

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 Washington, D.C. from Santiago de los Caballeros.

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

If you are not ready to book a flight from Santiago de los Caballeros to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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