$103+ Cheap flights from Dulles Intl (IAD) to Ontario
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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Dulles Intl to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap 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 diciembre 12, 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 diciembre 12, 2025.
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find 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 diciembre 12, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $213 (Ticket) |
One-way from | $103 (Air Canada) |
Popular in | November |
Cheapest in | June |
Average price | $299 |
Good round-trip deal | $247 or less |
Good one-way deal | $117 or less |
Cheapflights Fare Finder
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
jue. 2/26
11:40 am-1:10 pm
Nonstop1h 30m
Toronto Island
vie. 3/6
3:45 pm-5:14 pm
Nonstop1h 29m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
jue. 1/8
9:45 am-2:55 pm
1 stop5h 10m
Toronto Island
lun. 1/12
3:30 pm-8:54 pm
1 stop5h 24m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
mié. 1/7
11:35 am-1:09 pm
Nonstop1h 34m
Toronto Island
dom. 1/11
8:50 am-10:19 am
Nonstop1h 29m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
vie. 1/2
11:35 am-1:09 pm
Nonstop1h 34m
Toronto Island
vie. 1/9
8:50 am-10:19 am
Nonstop1h 29m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
mié. 1/7
9:45 am-4:55 pm
1 stop7h 10m
Toronto Island
sáb. 1/10
3:30 pm-8:54 pm
1 stop5h 24m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
vie. 2/6
9:45 am-2:25 pm
1 stop4h 40m
Toronto Island
lun. 2/9
4:25 pm-8:54 pm
1 stop4h 29m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
jue. 1/29
9:45 am-2:55 pm
1 stop5h 10m
Toronto Island
mar. 2/3
4:25 pm-8:54 pm
1 stop4h 29m
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
dom. 1/25
8:20 am-9:28 pm
2 stops13h 08m
Toronto Island
dom. 2/1
8:50 am-10:22 am
Nonstop1h 32m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
vie. 2/20
6:00 am-11:18 am
1 stop5h 18m
Toronto Pearson Intl
mar. 2/24
6:15 am-11:50 am
1 stop5h 35m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
vie. 1/23
12:23 pm-5:23 pm
1 stop5h 00m
Toronto Pearson Intl
lun. 1/26
6:00 am-11:43 am
1 stop5h 43m
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, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Region of Ontario (average of $92). Flying from Washington, D.C. Dulles Intl Airport to Region of Ontario in August is currently the most expensive (average of $171). 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 diciembre 12, 2025.
Unlike in the evening, when flights are generally more expensive, you can save up to 14% on flights from Washington, D.C. Dulles Intl Airport to Region of Ontario by exploring options for tickets at noon.
What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Ontario. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Region of Ontario flight should consider departing on Friday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 diciembre 12, 2025.
The most flights from IAD to CAON are scheduled on a Monday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 on average).
How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Region of Ontario?
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 diciembre 12, 2025.
Get a feel of what it's like to fly with Porter Airlines, Air Transat, and United Airlines from Washington, D.C. Dulles Intl Airport to Ontario by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Overall
Comfort
Boarding
Crew
Food
Reviews
Mohameed,Nov 2025
LAS - YYZ
Entertainment
Overall
Comfort
Boarding
Crew
Food
Reviews
Mohameed,Nov 2025
LAS - YYZ
Entertainment
Overall
Comfort
Boarding
Crew
Food
Reviews
Mohameed,Nov 2025
LAS - YYZ
Entertainment
Overall
Comfort
Boarding
Crew
Food
Reviews
Mohameed,Nov 2025
LAS - YYZ
Entertainment
Overall
Comfort
Boarding
Crew
Food
Reviews
Mohameed,Nov 2025
LAS - 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Dulles Intl to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Top 4 airlines flying from Dulles Intl to Ontario
Discover the top 4 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 2,558,603 searches. Data last updated diciembre 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$315 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$176 | Average$245 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$183 | Average$421 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$249 | Average$404 | FlexibilityNo cancel fee | On-time69% |