IAD - STI

$152 Find Cheap Flights from Washington Dulles Airport to Santiago de los Caballeros

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Santiago de los Caballeros departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Santiago de los Caballeros

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Santiago de los Caballeros, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Santiago de los Caballeros, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flights from Dulles Intl to Santiago de los Caballeros (IAD-STI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Santiago de los Caballeros that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Santiago de los Caballeros

Sun, Jul 27 - Wed, Aug 6
Frontier Logo
12:24 pm - 12:51 pmIAD-STI
24h 27m1 stop
Frontier Logo
2:10 pm - 11:29 amSTI-IAD
21h 19m1 stop
$373Frontier
Find Deal
Tue, Jun 24 - Wed, Jul 2
Frontier Logo
12:48 pm - 12:50 pmIAD-STI
24h 02m1 stop
Frontier Logo
2:10 pm - 11:28 amSTI-IAD
21h 18m1 stop
$398Frontier
Find Deal
Fri, Aug 15 - Sun, Aug 24
 Logo
1:22 pm - 9:15 amIAD-STI
19h 53m2 stops
 Logo
10:20 am - 3:23 pmSTI-IAD
29h 03m2 stops
Thu, Sep 18 - Tue, Sep 23
United Airlines Logo
6:20 am - 12:57 pmIAD-STI
6h 37m1 stop
United Airlines Logo
2:07 pm - 10:29 pmSTI-IAD
8h 22m1 stop
$465United Airlines
Find Deal
Mon, Aug 11 - Thu, Aug 21
American Airlines Logo
4:36 pm - 12:31 pmIAD-STI
19h 55m2 stops
American Airlines Logo
7:00 am - 11:59 pmSTI-IAD
16h 59m2 stops
$469American Airlines
Find Deal
Thu, Jul 10 - Thu, Jul 17
 Logo
11:58 am - 9:50 amIAD-STI
21h 52m2 stops
 Logo
10:55 am - 2:23 pmSTI-IAD
27h 28m2 stops
Fri, Sep 19 - Fri, Sep 26
Delta Logo
5:10 pm - 1:13 amIAD-STI
8h 03m1 stop
Delta Logo
6:20 am - 4:31 pmSTI-IAD
10h 11m1 stop
$485Delta
Find Deal
Sun, Aug 24 - Mon, Sep 8
American Airlines Logo
8:19 pm - 12:31 pmIAD-STI
16h 12m2 stops
American Airlines Logo
1:29 pm - 10:07 amSTI-IAD
20h 38m2 stops
$509American Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 11
Delta Logo
5:10 pm - 1:13 amIAD-STI
8h 03m1 stop
Delta Logo
6:10 am - 4:31 pmSTI-IAD
10h 21m1 stop
$545Delta
Find Deal
Tue, Jul 15 - Fri, Jul 18
United Airlines Logo
8:35 am - 3:12 pmIAD-STI
6h 37m1 stop
United Airlines Logo
2:07 pm - 10:27 pmSTI-IAD
8h 20m1 stop
$719United Airlines
Find Deal
Useful Info

KAYAK's insights & trends for Dulles Intl to Santiago de los Caballeros flights

Get data-powered insights and trends into flights from Dulles Intl to Santiago de los Caballeros to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Santiago de los Caballeros?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Washington Dulles Airport to Santiago de los Caballeros, look for departures on Tuesdays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Santiago de los Caballeros, Saturday is the cheapest day to fly and Tuesday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros is November, where tickets cost $429 (return) on average. On the other hand, the most expensive months are August and March, where the average cost of round-trip tickets is $864 and $784 respectively.

Good to know

Low seasonAugust
High seasonOctober
Cheapest flight$152
Best time to beat the crowds but there is an average 31% increase in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Washington Dulles Airport to Santiago de los Caballeros

When to book flights from Dulles Intl to Santiago de los Caballeros

Are your dates flexible? Find out the best times to travel from Dulles Intl to Santiago de los Caballeros based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Santiago de los Caballeros flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros was $152 for a one-way ticket and $373 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Santiago de los Caballeros?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Santiago de los Caballeros.

  • Which airports will I be using when flying from Washington Dulles Airport to Santiago de los Caballeros?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Santiago de los Caballeros, also known as Santiago de los Caballeros.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Santiago de los Caballeros?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Santiago de los Caballeros?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Santiago de los Caballeros, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Santiago de los Caballeros?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Santiago de los Caballeros.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Santiago de los Caballeros?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santiago de los Caballeros from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Santiago de los Caballeros?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santiago de los Caballeros with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and STI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Santiago de los Caballeros?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santiago de los Caballeros from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Dulles Intl to Santiago de los Caballeros

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Santiago de los Caballeros. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Santiago de los Caballeros? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8790 reviews
8.1Crew
6.6Food
7.0Entertainment
7.7Boarding
7.3Comfort
Airline reviews

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

2.0 MediocreAnonymous, Jun 2025LAX - SEA
Read more United Airlines reviews

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Liked nothing. As per previous segment it was delay delay delay.

I completely missed my flight because the first leg was longer than planned. I had to sleep overnight in the airport because no accommodation was provided and then sent to Trinidad in the morning with an anticipated 7 hour layover before my flight to Georgetown which was now with Caribbean Airlines. I tried twice with customer service to see if they could put me on an earlier flight which had seats available but was told it wasn’t possible.

Everything you need to know for your flight from Dulles Intl to Santiago de los Caballeros

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.