Cheap flights from Washington, D.C. to Ontario from $81
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Ontario departing on 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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One-way
Last minute
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Cheap round-trip flights
These are some of the best round-trip flight deals from Washington, D.C. to Ontario that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from Washington, D.C. to Ontario.
Cheap last minute flights
Planning a quick getaway from Washington, D.C. to Ontario? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to Ontario, so you can enjoy a seamless trip without layovers.
American Airlines flights from Washington, D.C. to Region of Ontario
Our best American Airlines deals on Washington, D.C. to Region of Ontario flight tickets
American Airlines![American Airlines]()
May 27![American Airlines]()
Jun 3
DCA10:00 amWashington, D.C. Reagan-National
1h 55m
YYZ11:55 amToronto Pearson Intl
YYZ5:29 pmToronto Pearson Intl
1h 40m
DCA7:09 pmWashington, D.C. Reagan-National
American Airlines![American Airlines]()
Jun 3![American Airlines]()
Jun 10
DCA10:00 amWashington, D.C. Reagan-National
1h 55m
YYZ11:55 amToronto Pearson Intl
YYZ5:19 pmToronto Pearson Intl
1h 40m
DCA6:59 pmWashington, D.C. Reagan-National
Delta flights from Washington, D.C. to Region of Ontario
Our best Delta deals on Washington, D.C. to Region of Ontario flight tickets
Delta![Delta]()
Jun 18![Delta]()
Jun 24
IAD6:00 amWashington, D.C. Dulles Intl
3h 21m
1 stop
YYZ9:21 amToronto Pearson Intl
YYZ6:30 amToronto Pearson Intl
5h 03m
1 stop
IAD11:33 amWashington, D.C. Dulles Intl
Delta![Delta]()
Jun 24![Delta]()
Jun 27
DCA6:06 amWashington, D.C. Reagan-National
5h 18m
1 stop
YYZ11:24 amToronto Pearson Intl
YYZ6:49 pmToronto Pearson Intl
4h 10m
1 stop
DCA10:59 pmWashington, D.C. Reagan-National
See travel insights to Ontario from
How to get the cheapest flight ticket from Washington, D.C. to Region of Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Prices
Airlines
Other information
What is the cheapest month to fly to Region of Ontario?
The month of March is, on average, the cheapest month to fly to Region of Ontario from Washington, D.C., with most prices found around $273. If you aren’t able to travel during the month of March, then book flights to Region of Ontario from Washington, D.C. during September instead. Flights to Region of Ontario in September, while not as cheap as those in March, still average around $276.
What is the cheapest day to depart on your flight to Region of Ontario?
According to our data, Friday is the cheapest day to fly to Region of Ontario from Washington, D.C.. The lowest ticket price found for a Friday departure recently was $360. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Washington, D.C. to Region of Ontario on a Sunday will generally be more expensive and average around $545. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Region of Ontario?
According to our data, the cheapest time of day to fly to Region of Ontario is at noon. momondo users have found flights departing from Washington, D.C. to Region of Ontario at noon for as low as $339. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $580.
What is the cheapest Washington, D.C. to Ontario flight route?
Fly from Washington, D.C. Dulles Intl to Toronto Island for the best Washington, D.C. - Ontario flight prices
How far in advance should I book a flight to Region of Ontario?
You are more likely to see cheaper flights to Region of Ontario from Washington, D.C. when booking 6 weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $323 when searching 6 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Washington, D.C. for as low as $238 on momondo.
What cabin class options are available on Washington, D.C. to Ontario flights?
There are 4 cabin classes available to choose from on Washington, D.C. to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Washington, D.C. to Ontario?
Porter Airlines, American Airlines, and United Airlines are the most popular carriers operating from Washington, D.C. to Ontario
What airlines fly to Region of Ontario?
Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Region of Ontario from Washington, D.C. according to our data. Air Canada is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 7 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from Washington, D.C. to Region of Ontario on average per day?
As of April 2025, there are 43 flights per day flying from Washington, D.C. to Region of Ontario. The most common time of day flights depart is 5:00PM, with 45% of flights taking off in the afternoon.
How many flights depart from Washington, D.C. to Region of Ontario on average per week?
306 flights are operational weekly from Washington, D.C. to Region of Ontario as of April 2025. The most popular departure day for this route is Wed, with 20% of flights per week taking off on this day.
Cheap Washington, D.C. to Region of Ontario flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Region of Ontario
Best Price Found | $81 |
|---|---|
Fastest flight time | 1h 33m |
Direct flights | Every day |
Airports in Region of Ontario | 2 airports |
When did momondo last update prices for flights from Washington, D.C. to Ontario?
Prices for flights from Washington, D.C. to Ontario refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Ontario?
As of April 2025, there are 7 operators available to choose from for flights from Washington, D.C. to Ontario.
How old do you have to be to fly from Washington, D.C. to Ontario?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Ontario.
What documentation or ID do you need to fly to Ontario?
The required travel and health documents for your Ontario trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Washington, D.C. to Region of Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. to Region of Ontario is De Havilland (Bombardier) DHC-8-400 Dash 8Q (22.24% of total bookings). The next most popular plane models are Embraer 175 (Enhanced Winglets) (17.65%), Canadair (Bombardier) Regional Jet 900 (12.75%), and Embraer 175 (10.27%).
Best airlines flying from Washington, D.C. to Region of Ontario
Compare and see reviews for airlines that fly from Washington, D.C. to Region of Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $103 | Free Cancellation | Rating 8.0 285 reviews | |||
| PriceFrom $116 | Free Cancellation | Rating 7.0 9,245 reviews | |||
| PriceFrom $127 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $145 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $169 | Free Cancellation | Rating 7.8 385 reviews | |||
| PriceFrom $242 | Free Cancellation | Rating 8.0 7,936 reviews | |||
| PriceFrom $278 | Free Cancellation | Rating 7.2 2,826 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Ontario?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Ontario. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Washington, D.C. to Ontario with flexible booking policies on momondo?
All flight searches from Washington, D.C. to Ontario on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Washington, D.C. to Ontario?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Washington, D.C..
I’m not ready to book a flight from Washington, D.C. to Ontario right now. Can momondo alert me if prices change?
Price alerts on flights to Ontario from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.
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