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Cheap flights from Santiago de los Caballeros to Washington, D.C. from $202

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 12/4. 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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Cheap round-trip flights

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Copa Airlines Logo
3:51 pm - 3:15 amSTI-IAD
12h 24m1 stop
Copa Airlines Logo
1:18 am - 2:56 pmIAD-STI
12h 38m1 stop
$488Copa Airlines
Find Deal
Sat, Feb 7 - Sun, Feb 8
Delta Logo
9:59 pm - 11:43 amSTI-IAD
14h 44m1 stop
Delta Logo
12:23 pm - 12:50 amIAD-STI
11h 27m1 stop
$521Delta
Find Deal
Sat, Feb 7 - Mon, Feb 9
American Airlines Logo
4:35 pm - 1:12 pmSTI-IAD
21h 37m2 stops
American Airlines Logo
9:12 am - 9:04 pmIAD-STI
10h 52m2 stops
$530American Airlines
Find Deal
Thu, Nov 27 - Wed, Dec 31
American Airlines Logo
6:20 am - 8:41 amSTI-IAD
27h 21m2 stops
American Airlines Logo
9:12 am - 9:04 pmIAD-STI
10h 52m2 stops
$532American Airlines
Find Deal
Thu, Nov 27 - Wed, Dec 31
Delta Logo
6:40 am - 7:08 pmSTI-IAD
13h 28m1 stop
Delta Logo
5:06 pm - 2:51 amIAD-STI
8h 45m1 stop
$545Delta
Find Deal
Thu, Nov 27 - Wed, Dec 31
Multiple Airlines Logo
3:43 am - 1:42 pmSTI-IAD
10h 59m2 stops
Multiple Airlines Logo
5:40 pm - 5:06 pmIAD-STI
22h 26m3 stops
$556Multiple Airlines
Find Deal
Sun, Dec 21 - Wed, Jan 7
American Airlines Logo
6:00 am - 11:12 pmSTI-IAD
18h 12m2 stops
American Airlines Logo
7:01 am - 9:46 pmIAD-STI
13h 45m2 stops
$580American Airlines
Find Deal
Fri, Jan 9 - Fri, Jan 23
United Airlines Logo
4:00 pm - 11:06 pmSTI-IAD
8h 06m1 stop
United Airlines Logo
6:00 am - 2:53 pmIAD-STI
7h 53m1 stop
$587United Airlines
Find Deal
Fri, Dec 19 - Fri, Jan 2
Multiple Airlines Logo
3:43 am - 4:13 pmSTI-IAD
13h 30m3 stops
Multiple Airlines Logo
5:40 pm - 5:06 pmIAD-STI
22h 26m3 stops
$602Multiple Airlines
Find Deal
Sun, Dec 21 - Wed, Jan 7
United Airlines Logo
6:00 am - 9:17 pmSTI-IAD
16h 17m2 stops
United Airlines Logo
6:00 am - 2:53 pmIAD-STI
7h 53m1 stop
$2,543United Airlines
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Sat, Feb 7 - Mon, Feb 9

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

Our best Copa Airlines deals on Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport flight tickets
Copa Airlines
Feb 7
STI3:51 pmSantiago de los Caballeros
12h 24m
1 stop
IAD3:15 amWashington, D.C. Dulles Intl
Feb 8
IAD1:18 amWashington, D.C. Dulles Intl
12h 38m
1 stop
STI2:56 pmSantiago de los Caballeros
$488
Find similar
Copa Airlines
Feb 7
STI3:51 pmSantiago de los Caballeros
12h 24m
1 stop
IAD3:15 amWashington, D.C. Dulles Intl
Feb 8
IAD1:18 amWashington, D.C. Dulles Intl
12h 38m
1 stop
STI2:56 pmSantiago de los Caballeros
$4,766
Find similar

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 7
STI9:59 pmSantiago de los Caballeros
14h 44m
1 stop
IAD11:43 amWashington, D.C. Dulles Intl
Feb 9
IAD12:23 pmWashington, D.C. Dulles Intl
11h 27m
1 stop
STI12:50 amSantiago de los Caballeros
$521
Find similar
Delta
Nov 27
STI6:40 amSantiago de los Caballeros
13h 28m
1 stop
IAD7:08 pmWashington, D.C. Dulles Intl
Dec 31
IAD5:06 pmWashington, D.C. Dulles Intl
8h 45m
1 stop
STI2:51 amSantiago de los Caballeros
$545
Find similar
Delta
Nov 21
STI9:01 pmSantiago de los Caballeros
15h 30m
1 stop
IAD11:31 amWashington, D.C. Dulles Intl
Nov 24
IAD12:11 pmWashington, D.C. Dulles Intl
11h 48m
1 stop
STI12:59 amSantiago de los Caballeros
$592
Find similar

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 October 30, 2025.
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 2/7

3:51 pm-3:15 am

1 stop12h 24m

Washington, D.C. Dulles Intl

Sun 2/8

1:18 am-2:56 pm

1 stop12h 38m

$488

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Sat 2/7

9:59 pm-11:43 am

1 stop14h 44m

Washington, D.C. Dulles Intl

Mon 2/9

12:23 pm-12:50 am

1 stop11h 27m

$521

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Thu 11/27

4:35 pm-1:12 pm

2 stops21h 37m

Washington, D.C. Dulles Intl

Wed 12/31

9:12 am-9:04 pm

2 stops10h 52m

$530

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Thu 11/27

6:20 am-8:41 am

2 stops27h 21m

Washington, D.C. Dulles Intl

Wed 12/31

9:12 am-9:04 pm

2 stops10h 52m

$532

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Thu 11/27

6:40 am-7:08 pm

1 stop13h 28m

Washington, D.C. Dulles Intl

Wed 12/31

5:06 pm-2:51 am

1 stop8h 45m

$545

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Sun 12/21

3:43 am-1:42 pm

2 stops10h 59m

Washington, D.C. Dulles Intl

Wed 1/7

5:40 pm-5:06 pm

3 stops22h 26m

$556

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Fri 1/9

6:00 am-11:12 pm

2 stops18h 12m

Washington, D.C. Dulles Intl

Fri 1/23

7:01 am-9:46 pm

2 stops13h 45m

$580

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Fri 12/19

4:00 pm-11:06 pm

1 stop8h 06m

Washington, D.C. Dulles Intl

Fri 1/2

6:00 am-2:53 pm

1 stop7h 53m

$587

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Sun 12/21

3:43 am-4:13 pm

3 stops13h 30m

Washington, D.C. Dulles Intl

Wed 1/7

5:40 pm-5:06 pm

3 stops22h 26m

$602

Santiago de los CaballerosWashington, D.C.

STI - IAD

STIIAD

Santiago de los Caballeros

Sat 2/7

6:00 am-9:17 pm

2 stops16h 17m

Washington, D.C. Dulles Intl

Mon 2/9

6:00 am-2:53 pm

1 stop7h 53m

$2,543

Flights are sorted by cheapest round-trip flights first.

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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 day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Saturday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $440. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Santiago de los Caballeros to Washington, D.C. Dulles Intl Airport for around $489.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Santiago de los Caballeros in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $440 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $756 on average. Flights to Washington, D.C. Dulles Intl Airport from Santiago de los Caballeros at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Direct flights

None
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.
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  • 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 06m.

  • 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
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Gaithersburg
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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