$254 Cheap Flights from Quito (UIO) to Washington (IAD)

View $254 flight on Tue, Oct 28, 2025Opens in a new window

Popular airlines from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Quito to Washington (UIO-IAD)

Prices were available within the past 7 days and start at $254 for one-way flights and $375 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 22 - Sun, Oct 26
UIO
Quito
IAD
Washington
$375 Roundtrip, found 4 days ago
$375
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 22 from Quito to Washington, returning Sun, Oct 26, priced at $375 found 4 days ago
Copa
Thu, Feb 26 - Mon, Mar 9
UIO
Quito
IAD
Washington
$385 Roundtrip, found 6 days ago
$385
Roundtrip
found 6 days ago
Select Copa flight, departing Thu, Feb 26 from Quito to Washington, returning Mon, Mar 9, priced at $385 found 6 days ago
United
Wed, Oct 22 - Sat, Oct 25
UIO
Quito
IAD
Washington
$390 Roundtrip, found 4 days ago
$390
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 22 from Quito to Washington, returning Sat, Oct 25, priced at $390 found 4 days ago
avianca
Mon, Oct 20 - Fri, Oct 24
UIO
Quito
IAD
Washington
$392 Roundtrip, found 4 days ago
$392
Roundtrip
found 4 days ago
Select avianca flight, departing Mon, Oct 20 from Quito to Washington, returning Fri, Oct 24, priced at $392 found 4 days ago
United
Wed, Oct 22 - Wed, Nov 12
UIO
Quito
IAD
Washington
$394 Roundtrip, found 4 days ago
$394
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 22 from Quito to Washington, returning Wed, Nov 12, priced at $394 found 4 days ago
Copa
Thu, Oct 30 - Sun, Nov 9
UIO
Quito
IAD
Washington
$400 Roundtrip, found 2 hours ago
$400
Roundtrip
found 2 hours ago
Select Copa flight, departing Thu, Oct 30 from Quito to Washington, returning Sun, Nov 9, priced at $400 found 2 hours ago
Delta
Sun, Dec 14 - Sun, Jan 11
UIO
Quito
IAD
Washington
$401 Roundtrip, found 2 hours ago
$401
Roundtrip
found 2 hours ago
Select Delta flight, departing Sun, Dec 14 from Quito to Washington, returning Sun, Jan 11, priced at $401 found 2 hours ago
Copa
Thu, Feb 26 - Mon, Mar 9
UIO
Quito
IAD
Washington
$402 Roundtrip, found 6 days ago
$402
Roundtrip
found 6 days ago
Select Copa flight, departing Thu, Feb 26 from Quito to Washington, returning Mon, Mar 9, priced at $402 found 6 days ago
Delta
Thu, Nov 13 - Mon, Nov 17
UIO
Quito
IAD
Washington
$404 Roundtrip, found 6 days ago
$404
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Nov 13 from Quito to Washington, returning Mon, Nov 17, priced at $404 found 6 days ago
American Airlines
Wed, Mar 4 - Wed, Mar 18
UIO
Quito
IAD
Washington
$408 Roundtrip, found 6 days ago
$408
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Mar 4 from Quito to Washington, returning Wed, Mar 18, priced at $408 found 6 days ago

Find the cheapest month to fly from Quito (UIO) to Washington (IAD)

November is typically the cheapest month to fly

From $379 - $628 per traveler.

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $707
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $707

Frequently asked questions

How much does a flight from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD) cost?
Snag a cheap one-way flight from $254 or cheap return flight from $375 from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from UIO to IAD is October, when demand is low. Off-peak season is usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline that'll fly you from UIO to IAD, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD)?
Nonstop flights from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from UIO to IAD?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on a range of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD)?
Choose a flight from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your ticket from UIO to IAD shortly before your trip is usually more expensive. But if you're flexible with your departure dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book an UIO to IAD flight and hotel package?
Booking an UIO to IAD flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our wide range of accommodations and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Mariscal Sucre Intl. Airport (UIO) to Washington Dulles Intl. Airport (IAD)?
It's usually possible to reschedule or cancel your UIO to IAD flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Mariscal Sucre Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, American Airlines, Copa, Delta, LATAM Airlines Group, United, avianca
Roundtrip price
$374
Distance
2700 mi

Book with confidence

Quito to Washington Flights

The cheapest times to fly from Quito to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Quito to Washington are during the month of October. You can find some of the cheapest flights from Quito to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Quito to Washington

Sunday is one of the best days to book for cheap flights from Quito to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Quito to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Quito to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $254 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Quito to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Quito to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Quito to Washington Flights

Explore a world of travel with Expedia

*Available to One Key members.