Cheap flights from Ontario to Washington, D.C. from C$ 161
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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Ontario to Washington, D.C.
Keep the following information in mind while searching for Ontario to Washington, D.C. flight deals. Data was last updated 26 June 2025.
Find flight deals from Ontario to Washington, D.C.
Cheapest flights from Ontario to Washington, D.C.Explore the most affordable flight options available from Ontario to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.
Explore the most affordable flight options available from Ontario to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Washington, D.C. 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 629,999 searches. Data last updated 26 June 2025.
Use the filters below to find and compare flights from Ontario to Washington, D.C. that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
TorontoWashington, D.C.
YTZ - IAD
YTZIAD
Toronto Island
Thu 24/7
8:45 a.m.-10:16 a.m.
Nonstop1h 31m
Washington, D.C. Dulles Intl
Tue 29/7
4:10 p.m.-5:43 p.m.
Nonstop1h 33m
TorontoWashington, D.C.
YYZ - IAD
YYZIAD
Toronto Pearson Intl
Wed 6/8
8:10 a.m.-9:37 a.m.
Nonstop1h 27m
Washington, D.C. Dulles Intl
Wed 13/8
2:25 p.m.-4:01 p.m.
Nonstop1h 36m
TorontoWashington, D.C.
YYZ - IAD
YYZIAD
Toronto Pearson Intl
Sat 15/11
7:40 p.m.-9:20 p.m.
Nonstop1h 40m
Washington, D.C. Dulles Intl
Sun 16/11
8:30 a.m.-4:02 p.m.
1 stop7h 32m
TorontoWashington, D.C.
YYZ - DCA
YYZDCA
Toronto Pearson Intl
Tue 19/8
7:25 a.m.-8:57 a.m.
Nonstop1h 32m
Washington, D.C. Reagan-National
Tue 19/8
6:50 p.m.-8:24 p.m.
Nonstop1h 34m
TorontoWashington, D.C.
YTZ - DCA
YTZDCA
Toronto Island
Wed 3/9
10:25 a.m.-3:51 p.m.
1 stop5h 26m
Washington, D.C. Reagan-National
Sat 6/9
6:00 a.m.-11:45 a.m.
1 stop5h 45m
TorontoWashington, D.C.
YTZ - IAD
YTZIAD
Toronto Island
Fri 11/7
8:45 a.m.-10:16 a.m.
Nonstop1h 31m
Washington, D.C. Dulles Intl
Tue 15/7
4:10 p.m.-5:43 p.m.
Nonstop1h 33m
TorontoWashington, D.C.
YTZ - IAD
YTZIAD
Toronto Island
Wed 6/8
4:10 p.m.-9:04 p.m.
1 stop4h 54m
Washington, D.C. Dulles Intl
Wed 13/8
9:45 a.m.-4:46 p.m.
1 stop7h 01m
TorontoWashington, D.C.
YTZ - IAD
YTZIAD
Toronto Island
Wed 23/7
1:25 p.m.-2:56 p.m.
Nonstop1h 31m
Washington, D.C. Dulles Intl
Wed 30/7
1:03 p.m.-5:46 p.m.
1 stop4h 43m
TorontoWashington, D.C.
YYZ - DCA
YYZDCA
Toronto Pearson Intl
Tue 19/8
10:38 a.m.-7:06 p.m.
2 stops8h 28m
Washington, D.C. Reagan-National
Wed 20/8
1:47 p.m.-11:10 p.m.
1 stop9h 23m
TorontoWashington, D.C.
YYZ - DCA
YYZDCA
Toronto Pearson Intl
Fri 5/9
6:13 p.m.-10:58 p.m.
1 stop4h 45m
Washington, D.C. Reagan-National
Mon 8/9
6:00 a.m.-9:20 a.m.
1 stop3h 20m
Best time to book a flight from Ontario to Washington, D.C.
Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Ontario with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Washington, D.C.
What is the cheapest month to book a flight from Region of Ontario to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of C$ 256). Flying from Region of Ontario to Washington, D.C. in October is currently the most expensive (average of C$ 352). 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 ON to WAS?
Find hourly flight availability from Ontario to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 June 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Washington, D.C. as you normally would.
Weekly flight availability from Region of Ontario to Washington, D.C.
Explore weekly flight availability from Ontario to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 26 June 2025.
The most flights from CAON to WAS are scheduled on a Wednesday (28 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (22 on average).
Reviews of airlines servicing Washington, D.C.
Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated 26 June 2025.
See what other customers who have flown with Porter Airlines,Delta, andAir Transat from Ontario to Washington, D.C. have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Crew
Comfort
Boarding
Overall
Entertainment
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Crew
Comfort
Boarding
Overall
Entertainment
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Crew
Comfort
Boarding
Overall
Entertainment
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Crew
Comfort
Boarding
Overall
Entertainment
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Crew
Comfort
Boarding
Overall
Entertainment
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Crew
Comfort
Boarding
Overall
Entertainment
Reviews
Mary,Jun 2025
FLL - YYZ
Related info for your journey
Find useful and relevant information for your journey from Ontario to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near Ontario?
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Alternative routes for Ontario to Washington, D.C.
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from Ontario to Washington, D.C.
Discover the top 7 airlines that operate flights from Ontario to Washington, D.C.. 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 629,999 searches. Data last updated 26 June 2025.
Fly with Cheapflights
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How does Cheapflights help users find flights from Ontario to Washington, D.C.?
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Why should you use Cheapflights to find cheap flight tickets from Ontario to Washington, D.C.?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to Washington, D.C. for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Ontario to Washington, D.C. with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Washington, D.C. flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Ontario to Washington, D.C. become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington, D.C. from Ontario today and book when prices fit your budget.