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Santiago de los Caballeros

$161+ Cheap flights from Dulles Intl (IAD) to Santiago de los Caballeros (STI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — STI
dic. 13 — dic. 201
sáb. 12/13
sáb. 12/20
1 adult, Economy
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Cheap flight deals from Dulles Intl to Santiago de los Caballeros

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Santiago de los Caballeros (STI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$450
(Copa Airlines)

One-way from

$161
(Kiwi.com)

Popular in

July

Cheapest in

May

Average price

$586
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Santiago de los Caballeros flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Santiago de los Caballeros flights.
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From Washington, D.C. Dulles Intl to Santiago de los Caballeros
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One-way flight from Washington, D.C. Dulles Intl to Santiago de los Caballeros
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Highest demand for flights based on searches. 12% potential increase in price ($103 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Dulles Intl to Santiago de los Caballeros

Cheapest flights from Dulles Intl to Santiago de los Caballeros
Explore the most affordable flight options available from Dulles Intl to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 13, 2025.

This Mytrip deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/68:25 amIAD - STI
3 stops17h 17mMultiple Airlines
sáb. 12/131:01 pmSTI - IAD
3 stops31h 06mMultiple Airlines
Deal found 11/12$461
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/87:59 amIAD - STI
2 stops11h 34mAmerican Airlines
dom. 2/86:00 amSTI - IAD
2 stops18h 12mAmerican Airlines
Deal found 11/11$517
This Delta deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/2612:11 pmIAD - STI
1 stop6h 25mDelta
vie. 12/56:35 amSTI - IAD
1 stop13h 44mDelta
Deal found 11/13$548
This American Airlines deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/68:05 pmIAD - STI
2 stops18h 27mAmerican Airlines
sáb. 12/136:00 amSTI - IAD
2 stops19h 01mAmerican Airlines
Deal found 11/12$552
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/68:05 pmIAD - STI
2 stops18h 27mAmerican Airlines
dom. 12/144:32 pmSTI - IAD
2 stops18h 48mAmerican Airlines
Deal found 11/11$557
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/138:09 pmIAD - STI
2 stops18h 24mAmerican Airlines
mar. 11/187:00 amSTI - IAD
2 stops17h 07mAmerican Airlines
Deal found 11/11$562
This Delta deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1312:11 pmIAD - STI
1 stop11h 48mDelta
mar. 11/186:40 amSTI - IAD
1 stop13h 28mDelta
Deal found 11/11$568
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/172:16 pmIAD - STI
2 stops24h 17mAmerican Airlines
mar. 12/26:20 amSTI - IAD
2 stops17h 47mAmerican Airlines
Deal found 11/11$570
This American Airlines deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/52:16 pmIAD - STI
2 stops24h 16mAmerican Airlines
sáb. 12/134:32 pmSTI - IAD
2 stops21h 48mAmerican Airlines
Deal found 11/12$571
This American Airlines deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/147:59 amIAD - STI
2 stops11h 52mAmerican Airlines
lun. 11/174:35 pmSTI - IAD
2 stops18h 44mAmerican Airlines
Deal found 11/12$572
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/138:09 pmIAD - STI
2 stops18h 24mAmerican Airlines
lun. 11/174:35 pmSTI - IAD
2 stops22h 00mAmerican Airlines
Deal found 11/11$582

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated noviembre 13, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros that are best for you.

Fly from

Dulles Intl

Fly to

Santiago de los Caballeros

Route

Depart

Return

Price

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

sáb. 12/6

8:25 am-2:42 am

3 stops17h 17m

Santiago de los Caballeros

sáb. 12/13

1:01 pm-7:07 pm

3 stops31h 06m

$461

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

mar. 1/20

12:23 pm-12:50 am

1 stop11h 27m

Santiago de los Caballeros

mar. 1/27

6:39 am-7:09 pm

1 stop13h 30m

$468

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

jue. 1/8

12:23 pm-12:50 am

1 stop11h 27m

Santiago de los Caballeros

mié. 2/18

6:35 am-7:11 pm

1 stop13h 36m

$488

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

dom. 1/4

4:29 pm-2:24 pm

2 stops20h 55m

Santiago de los Caballeros

lun. 1/19

4:33 pm-10:58 am

2 stops19h 25m

$567

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

mié. 11/26

12:11 pm-7:36 pm

1 stop6h 25m

Santiago de los Caballeros

sáb. 12/6

8:57 pm-11:39 am

1 stop15h 42m

$568

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

mié. 11/26

12:11 pm-7:36 pm

1 stop6h 25m

Santiago de los Caballeros

vie. 12/5

6:35 am-7:19 pm

1 stop13h 44m

$583

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

vie. 11/28

12:11 pm-12:59 am

1 stop11h 48m

Santiago de los Caballeros

lun. 12/1

9:01 pm-11:39 am

1 stop15h 38m

$603

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

sáb. 12/6

12:19 pm-1:08 am

1 stop11h 49m

Santiago de los Caballeros

dom. 12/14

8:57 pm-11:39 am

1 stop15h 42m

$603

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

vie. 12/5

5:45 am-12:06 pm

2 stops29h 21m

$161

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

mié. 12/31

7:01 pm-2:42 am

2 stops30h 41m

$163

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 14 results
1
2

Compare providers for flights from Dulles Intl to Santiago de los Caballeros

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Santiago de los Caballeros in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Santiago de los Caballeros flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Santiago de los Caballeros flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Santiago de los Caballeros flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Santiago de los Caballeros flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Santiago de los Caballeros flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Santiago de los Caballeros

Have a flexible travel schedule? Discover the best time to fly to Santiago de los Caballeros from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros (average of $214). Flying from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros in September is currently the most expensive (average of $580). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to STI?

Find hourly flight availability from Dulles Intl to Santiago de los Caballeros. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros at noon. If you’re flexible enough to do this you can expect to save up to 44% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Santiago de los Caballeros

Get insights into the airlines that provide service to Santiago de los Caballeros. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Santiago de los Caballeros. Reviews last updated noviembre 13, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,017 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,017 reviews
United Airlines
7.4
Good
9,017 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Santiago de los Caballeros. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Santiago de los Caballeros from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Santiago de los Caballeros, you will be flying into Santiago. Santiago de los Caballeros (STI) is just 6.8 mi from the center of the city. Santiago is the only Santiago de los Caballeros airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 1 airline has flights to Santiago de los Caballeros from Washington, D.C. Dulles Intl on a regular basis.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros?

    For as low as $468, Delta can have you in Santiago de los Caballeros from Washington, D.C. Dulles Intl Airport in 11h 27m. The distance from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros is about 1410 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros round-trip from $488. United Airlines is priced at 30% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Dulles Intl to Santiago de los Caballeros that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Santiago de los Caballeros flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Santiago de los Caballeros?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Santiago de los Caballeros.

  • Can I find deals for business class flights from Dulles Intl to Santiago de los Caballeros?

    Yes. Cheapflights offers flight deals from Dulles Intl to Santiago de los Caballeros by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros (average of $214). Flying from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros in September is currently the most expensive (average of $580). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Dulles Intl to Santiago de los Caballeros

Discover the top airline that operate flights from Dulles Intl to Santiago de los Caballeros. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$488Average$729FlexibilityNo cancel feeOn-time69%

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