$197 Cheap United flights Ottawa (YOW) to Washington (IAD)

View $197 flight on Mon, Sep 1, 2025Opens in a new window

$197 Cheap United flights Ottawa (YOW) to Washington (IAD)

Prices were available within the past 7 days and start at $197 for one-way flights and $295 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Aug 7 - Fri, Aug 8
YOW
Ottawa
IAD
Washington
$295 Roundtrip, found 1 day ago
$295
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 7 from Ottawa to Washington, returning Fri, Aug 8, priced at $295 found 1 day ago
United
Tue, Jul 22 - Sun, Aug 3
YOW
Ottawa
IAD
Washington
$307 Roundtrip, found 4 days ago
$307
Roundtrip
found 4 days ago
Select United flight, departing Tue, Jul 22 from Ottawa to Washington, returning Sun, Aug 3, priced at $307 found 4 days ago
United
Sat, Aug 30 - Sat, Sep 6
YOW
Ottawa
IAD
Washington
$309 Roundtrip, found 1 day ago
$309
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 30 from Ottawa to Washington, returning Sat, Sep 6, priced at $309 found 1 day ago
United
Mon, Jul 28 - Tue, Sep 9
YOW
Ottawa
IAD
Washington
$312 Roundtrip, found 5 days ago
$312
Roundtrip
found 5 days ago
Select United flight, departing Mon, Jul 28 from Ottawa to Washington, returning Tue, Sep 9, priced at $312 found 5 days ago
United
Sat, Aug 30 - Sat, Sep 6
YOW
Ottawa
IAD
Washington
$316 Roundtrip, found 1 day ago
$316
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 30 from Ottawa to Washington, returning Sat, Sep 6, priced at $316 found 1 day ago
United
Fri, Aug 29 - Mon, Sep 1
YOW
Ottawa
IAD
Washington
$317 Roundtrip, found 5 days ago
$317
Roundtrip
found 5 days ago
Select United flight, departing Fri, Aug 29 from Ottawa to Washington, returning Mon, Sep 1, priced at $317 found 5 days ago
Flights from Ottawa (YOW) to Washington (IAD)
Origin airport
Macdonald-Cartier Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, Porter Airlines, United, WestJet
Popular airline
Porter Airlines
Distance
449 mi
Average flight time
1 hour 36 mins

Frequently asked questions

How much is a United Airlines flight from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD)?
You'll find budget-friendly return United Airlines flights from $295 from YOW to IAD by sorting your results from "Price (lowest to highest)" on Expedia. Or look for options from $197 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from YOW to IAD with United Airlines?
Search for one-way or return flights to Washington in January or February. You could find cheaper fares with United Airlines during these off-peak times.
What is the cheapest time to book flights from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD) with United Airlines?
Look for United Airlines flights from YOW to IAD about one month before you want to leave. The cheapest time to reserve an international flight is generally 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. Regardless of itinerary or ticket type, the best day of the week to book international airfare is usually Sunday. Friday can be the most expensive. Travelers booking on a Sunday can save 17% on average compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD)?
Skip the layovers and fly from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD) on any of United Airlines's 14 direct weekly flights. Make use of our "Nonstop" and "Airline" filters to find the United Airlines flight that'll take you to IAD at a time that suits you.
How long does it take to fly from YOW to IAD with United Airlines?
It takes approximately 1h 53m to fly nonstop from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD) with United Airlines.
Which day of the week has the most United Airlines flights from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD)?
Thursday has the most United Airlines flights from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD). With 2 daily departures, this is the best day of the week to book something that will fit your plans.
What is the earliest United Airlines flight from YOW to IAD?
The earliest United Airlines flight from YOW to IAD takes off at 9:45AM UTC-5, arriving at 11:38AM UTC-5. If you want to set off later, the last United Airlines flight leaves YOW at 2:05PM UTC-5 and lands at IAD at 3:58PM UTC-5. Flying early is often a smart choice as morning flights tend to experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Washington?
United Airlines flights from Macdonald-Cartier Intl. Airport (YOW) to Washington touch down at Washington Dulles Intl. Airport (IAD) and Ronald Reagan Washington National Airport (DCA). The primary Washington gateway served by this carrier is IAD. It's worth checking out flights landing at nearby airports on Expedia as you may find cheaper prices.
Why fly with United Airlines from YOW to IAD?
A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to leave from YOW to IAD with United Airlines. Plus, when you join our One Key™ program, you can earn OneKeyCash™* on top of any airline loyalty program earnings. It's yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD)?
United Airlines typically uses Canadair (Bombardier) Regional Jet 550 planes for journeys from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD). Remember that aircraft type can change depending on operational needs, so the plane you board might be different on your travel date.
Can I change or cancel my United Airlines flight from Macdonald-Cartier Intl. Airport (YOW) to Washington Dulles Intl. Airport (IAD)?
Changes are often free within 24 hours of booking, but your airline may charge you after that time. For further details about altering your flights, check out your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to change your plans without extra charges, tick the "Changes included" or "No cancel fee" filter when organizing your next trip.

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*Available to One Key members.