Cheap flights from Washington, D.C. Dulles Intl Airport to Ontario from C$ 114
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 29/6. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Dulles Intl to Ontario
Keep the following information in mind while searching for Dulles Intl to Ontario flight deals. Data was last updated 14 June 2025.
Find flight deals from Dulles Intl to Ontario
Cheapest flights from Dulles Intl to OntarioExplore the most affordable flight options available from Dulles Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 June 2025.
Explore the most affordable flight options available from Dulles Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 June 2025.
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Ontario 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 14 June 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
Tue 15/7
4:10 p.m.-5:43 p.m.
Nonstop1h 33m
Toronto Island
Fri 18/7
8:45 a.m.-10:16 a.m.
Nonstop1h 31m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Tue 22/7
2:25 p.m.-4:01 p.m.
Nonstop1h 36m
Toronto Pearson Intl
Thu 24/7
8:10 a.m.-9:37 a.m.
Nonstop1h 27m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
Fri 11/7
11:35 a.m.-1:08 p.m.
Nonstop1h 33m
Toronto Island
Sat 12/7
1:25 p.m.-2:56 p.m.
Nonstop1h 31m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
Wed 20/8
9:35 a.m.-2:46 p.m.
1 stop5h 11m
Toronto Island
Mon 25/8
3:25 p.m.-9:01 p.m.
1 stop5h 36m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Sat 19/7
6:00 a.m.-2:45 p.m.
1 stop8h 45m
Toronto Pearson Intl
Tue 22/7
6:30 a.m.-11:32 a.m.
1 stop5h 02m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
Fri 11/7
11:35 a.m.-1:08 p.m.
Nonstop1h 33m
Toronto Island
Wed 16/7
1:25 p.m.-2:56 p.m.
Nonstop1h 31m
Washington, D.C.Montreal
IAD - YUL
IADYUL
Washington, D.C. Dulles Intl
Mon 21/7
4:10 p.m.-10:15 p.m.
1 stop6h 05m
Montreal Pierre Elliott Trudeau Intl
Thu 24/7
8:00 a.m.-1:42 p.m.
1 stop5h 42m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Tue 15/7
6:35 a.m.-11:49 a.m.
1 stop5h 14m
Toronto Pearson Intl
Tue 15/7
2:30 p.m.-4:10 p.m.
Nonstop1h 40m
Washington, D.C.Montreal
IAD - YUL
IADYUL
Washington, D.C. Dulles Intl
Wed 9/7
4:10 p.m.-8:10 p.m.
1 stop4h 00m
Montreal Pierre Elliott Trudeau Intl
Sun 13/7
8:55 a.m.-2:56 p.m.
1 stop6h 01m
Washington, D.C.Montreal
IAD - YUL
IADYUL
Washington, D.C. Dulles Intl
Thu 11/9
9:35 a.m.-11:28 a.m.
Nonstop1h 53m
Montreal Pierre Elliott Trudeau Intl
Fri 12/9
7:10 p.m.-9:05 p.m.
Nonstop1h 55m
Best time to book a flight from Dulles Intl to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Dulles Intl with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Ontario
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Region of Ontario (average of C$ 167). Flying from Washington, D.C. Dulles Intl Airport to Region of Ontario in July is currently the most expensive (average of C$ 255). 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 ON?
Find hourly flight availability from Dulles Intl to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 June 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Region of Ontario as you normally would.
Weekly flight availability from Washington, D.C. Dulles Intl Airport to Region of Ontario
Explore weekly flight availability from Dulles Intl to Ontario. 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 14 June 2025.
The most flights from IAD to CAON are scheduled on a Monday (19 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (16 on average).
Rainfall in Ontario by month
Plan your trip to Ontario by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.
Temperature in Ontario by month
Plan your trip to Ontario by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 14 June 2025.
See what other customers who have flown with Porter Airlines, Delta and Air Transat from Washington, D.C. to Ontario have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
Entertainment
Comfort
Crew
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Entertainment
Comfort
Crew
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Entertainment
Comfort
Crew
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Entertainment
Comfort
Crew
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Entertainment
Comfort
Crew
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Food
Entertainment
Comfort
Crew
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Dulles Intl to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from Dulles Intl to Ontario
Discover the top 3 airlines that operate flights from Dulles Intl to Ontario. 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 14 June 2025.
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How does Cheapflights help users find flights from Dulles Intl to Ontario?
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