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Cheap flights from Santiago de los Caballeros to Washington, D.C. from $236

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 3/26. 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 Santiago de los Caballeros to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Copa Airlines Logo
3:59 pm - 4:22 am
STI
-
IAD
12h 23m
1 stop
Copa Airlines Logo
2:21 am - 2:50 pm
IAD
-
STI
12h 29m
1 stop
$552Copa Airlines
Mon, Apr 20 - Wed, Apr 29
American Airlines Logo
1:32 pm - 11:59 pm
STI
-
IAD
10h 27m
2 stops
American Airlines Logo
8:11 pm - 12:23 pm
IAD
-
STI
16h 12m
2 stops
$581American Airlines
Wed, May 6 - Mon, May 18
Delta Logo
8:59 pm - 12:23 pm
STI
-
IAD
15h 24m
1 stop
Delta Logo
1:32 pm - 12:59 am
IAD
-
STI
11h 27m
1 stop
$588Delta
Wed, May 6 - Mon, May 18
Multiple Airlines Logo
2:46 am - 9:01 pm
STI
-
IAD
18h 15m
3 stops
Multiple Airlines Logo
5:40 pm - 2:02 pm
IAD
-
STI
20h 22m
3 stops
$630Multiple Airlines
Wed, Apr 8 - Thu, Apr 16
Multiple Airlines Logo
2:46 am - 9:01 pm
STI
-
IAD
18h 15m
3 stops
Multiple Airlines Logo
5:40 pm - 2:02 pm
IAD
-
STI
20h 22m
3 stops
$632Multiple Airlines
Wed, Apr 8 - Thu, Apr 16
Multiple Airlines Logo
3:07 pm - 11:21 am
STI
-
IAD
20h 14m
3 stops
Multiple Airlines Logo
5:40 pm - 2:02 pm
IAD
-
STI
20h 22m
3 stops
$640Multiple Airlines
Fri, Apr 24 - Fri, May 29
Multiple Airlines Logo
2:46 am - 9:01 pm
STI
-
IAD
18h 15m
3 stops
Multiple Airlines Logo
5:40 pm - 2:02 pm
IAD
-
STI
20h 22m
3 stops
$662Multiple Airlines
Thu, Apr 9 - Fri, Apr 17
United Airlines Logo
2:07 pm - 11:25 pm
STI
-
IAD
9h 18m
1 stop
United Airlines Logo
8:23 am - 3:12 pm
IAD
-
STI
6h 49m
1 stop
$671United Airlines
Thu, Apr 23 - Mon, Apr 27
United Airlines Logo
2:07 pm - 11:25 pm
STI
-
IAD
9h 18m
1 stop
United Airlines Logo
6:00 am - 12:57 pm
IAD
-
STI
6h 57m
1 stop
$677United Airlines
Thu, Apr 23 - Mon, Apr 27
Multiple Airlines Logo
2:46 am - 9:01 pm
STI
-
IAD
18h 15m
3 stops
Multiple Airlines Logo
5:40 pm - 2:23 pm
IAD
-
STI
20h 43m
3 stops
$685Multiple Airlines
Thu, Mar 26 - Tue, Mar 31

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
May 6
STI8:59 pmSantiago de los Caballeros
15h 24m
1 stop
IAD12:23 pmWashington, D.C. Dulles Intl
May 18
IAD1:32 pmWashington, D.C. Dulles Intl
11h 27m
1 stop
STI12:59 amSantiago de los Caballeros
$588
Delta
Apr 9
STI6:00 amSantiago de los Caballeros
13h 19m
1 stop
IAD7:19 pmWashington, D.C. Dulles Intl
Apr 16
IAD12:45 pmWashington, D.C. Dulles Intl
11h 37m
1 stop
STI12:22 amSantiago de los Caballeros
$723
Delta
Apr 21
STI6:00 amSantiago de los Caballeros
12h 08m
1 stop
IAD6:08 pmWashington, D.C. Dulles Intl
Apr 24
IAD12:45 pmWashington, D.C. Dulles Intl
6h 48m
1 stop
STI7:33 pmSantiago de los Caballeros
$758

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
May 6
STI1:32 pmSantiago de los Caballeros
10h 27m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
May 18
IAD8:11 pmWashington, D.C. Dulles Intl
16h 12m
2 stops
STI12:23 pmSantiago de los Caballeros
$581
American Airlines
Apr 20
STI1:32 pmSantiago de los Caballeros
25h 51m
2 stops
IAD3:23 pmWashington, D.C. Dulles Intl
Apr 30
IAD8:11 pmWashington, D.C. Dulles Intl
16h 12m
2 stops
STI12:23 pmSantiago de los Caballeros
$750
American Airlines
Apr 19
STI1:32 pmSantiago de los Caballeros
19h 17m
2 stops
IAD8:49 amWashington, D.C. Dulles Intl
Apr 29
IAD3:17 pmWashington, D.C. Dulles Intl
21h 06m
2 stops
STI12:23 pmSantiago de los Caballeros
$756

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 March 14, 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

Cheapest round-trip

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Mon 4/20

3:59 pm-4:22 am

1 stop12h 23m

Washington, D.C. Dulles Intl

Wed 4/29

2:21 am-2:50 pm

1 stop12h 29m

$552

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Wed 5/6

1:32 pm-11:59 pm

2 stops10h 27m

Washington, D.C. Dulles Intl

Mon 5/18

8:11 pm-12:23 pm

2 stops16h 12m

$581

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Wed 5/6

8:59 pm-12:23 pm

1 stop15h 24m

Washington, D.C. Dulles Intl

Mon 5/18

1:32 pm-12:59 am

1 stop11h 27m

$588

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Wed 4/8

2:46 am-9:01 pm

3 stops18h 15m

Washington, D.C. Dulles Intl

Thu 4/16

5:40 pm-2:02 pm

3 stops20h 22m

$630

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Wed 4/8

2:46 am-9:01 pm

3 stops18h 15m

Washington, D.C. Dulles Intl

Thu 4/16

5:40 pm-2:02 pm

3 stops20h 22m

$632

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Fri 4/24

3:07 pm-11:21 am

3 stops20h 14m

Washington, D.C. Dulles Intl

Fri 5/29

5:40 pm-2:02 pm

3 stops20h 22m

$640

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Thu 4/9

2:46 am-9:01 pm

3 stops18h 15m

Washington, D.C. Dulles Intl

Fri 4/17

5:40 pm-2:02 pm

3 stops20h 22m

$662
Quickest round-trip

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Thu 4/23

2:07 pm-11:25 pm

1 stop9h 18m

Washington, D.C. Dulles Intl

Mon 4/27

8:23 am-3:12 pm

1 stop6h 49m

$671

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Thu 4/23

2:07 pm-11:25 pm

1 stop9h 18m

Washington, D.C. Dulles Intl

Mon 4/27

6:00 am-12:57 pm

1 stop6h 57m

$677

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Thu 3/26

2:46 am-9:01 pm

3 stops18h 15m

Washington, D.C. Dulles Intl

Tue 3/31

5:40 pm-2:23 pm

3 stops20h 43m

$685

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 Washington, D.C. from

How to get the cheapest flight ticket from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport

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 cheapest airline that flies from Santiago de los Caballeros to Washington, D.C. Dulles Intl?

Delta, American Airlines, and United Airlines are the most popular carriers operating from Santiago de los Caballeros to Washington, D.C. Dulles Intl

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 19m

Direct flights

None
The fastest flight from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport takes 8h 19m
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 19m.

  • 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.

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
Colonial Beach
Laurel
Towson
Gaithersburg
Silver Spring
Fredericksburg
Rockville
Tysons
Manassas
Springfield
Bethesda
Fairfax
Sterling

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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