Cheap flights from Ontario to Washington, D.C. from $113

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Washington, D.C. departing on 9/22. 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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Cheap round-trip flights

Porter Airlines Logo
1:35 pm - 3:06 pmYTZ-IAD
1h 31mnonstop
Porter Airlines Logo
11:35 am - 1:08 pmIAD-YTZ
1h 33mnonstop
$187Porter Airlines
Find Deal
Tue, Sep 16 - Fri, Sep 19
Porter Airlines Logo
8:45 am - 10:16 amYTZ-IAD
1h 31mnonstop
Porter Airlines Logo
4:20 pm - 5:53 pmIAD-YTZ
1h 33mnonstop
$188Porter Airlines
Find Deal
Sun, Sep 14 - Sun, Sep 14
Air Canada Logo
8:10 am - 9:38 amYYZ-IAD
1h 28mnonstop
Air Canada Logo
10:20 am - 11:52 amIAD-YYZ
1h 32mnonstop
$199Air Canada
Find Deal
Wed, Sep 24 - Sun, Sep 28
Air Canada Logo
12:10 pm - 1:38 pmYYZ-IAD
1h 28mnonstop
Air Canada Logo
10:20 am - 11:52 amIAD-YYZ
1h 32mnonstop
$200Air Canada
Find Deal
Wed, Sep 24 - Wed, Oct 1
 Logo
1:35 pm - 3:06 pmYTZ-IAD
1h 31mnonstop
 Logo
9:35 am - 4:45 pmIAD-YTZ
7h 10m1 stop
Wed, Sep 24 - Sun, Sep 28
Air Transat Logo
4:05 pm - 5:34 pmYTZ-IAD
1h 29mnonstop
Air Transat Logo
6:35 pm - 8:05 pmIAD-YTZ
1h 30mnonstop
$214Air Transat
Find Deal
Tue, Nov 4 - Tue, Nov 11
United Airlines Logo
7:40 pm - 9:20 pmYYZ-IAD
1h 40mnonstop
United Airlines Logo
8:20 am - 2:01 pmIAD-YYZ
5h 41m1 stop
$214United Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
Air Transat Logo
1:35 pm - 3:06 pmYTZ-IAD
1h 31mnonstop
Air Transat Logo
4:20 pm - 5:53 pmIAD-YTZ
1h 33mnonstop
$215Air Transat
Find Deal
Tue, Sep 23 - Tue, Sep 30
 Logo
8:45 am - 10:16 amYTZ-IAD
1h 31mnonstop
 Logo
9:45 am - 2:45 pmIAD-YTZ
5h 00m1 stop
Thu, Sep 4 - Sun, Sep 7
United Airlines Logo
3:00 pm - 8:41 pmYYZ-IAD
5h 41m1 stop
United Airlines Logo
8:28 am - 10:04 amIAD-YYZ
1h 36mnonstop
$241United Airlines
Find Deal
Sat, Sep 13 - Sun, Sep 14

Porter Airlines flights from Region of Ontario to Washington, D.C. Dulles Intl Airport

Our best Porter Airlines deals on Region of Ontario to Washington, D.C. Dulles Intl Airport flight tickets
Porter Airlines
Sep 16
YTZ1:35 pmToronto Island
1h 31m
IAD3:06 pmWashington, D.C. Dulles Intl
Sep 19
IAD11:35 amWashington, D.C. Dulles Intl
1h 33m
YTZ1:08 pmToronto Island
Porter Airlines
Sep 14
YTZ8:45 amToronto Island
1h 31m
IAD10:16 amWashington, D.C. Dulles Intl
Sep 14
IAD4:20 pmWashington, D.C. Dulles Intl
1h 33m
YTZ5:53 pmToronto Island
Porter Airlines
Sep 24
YTZ1:35 pmToronto Island
1h 31m
IAD3:06 pmWashington, D.C. Dulles Intl
Oct 1
IAD4:20 pmWashington, D.C. Dulles Intl
1h 33m
YTZ5:53 pmToronto Island

Air Transat flights from Region of Ontario to Washington, D.C. Dulles Intl Airport

Our best Air Transat deals on Region of Ontario to Washington, D.C. Dulles Intl Airport flight tickets
Air Transat
Nov 4
YTZ4:05 pmToronto Island
1h 29m
IAD5:34 pmWashington, D.C. Dulles Intl
Nov 11
IAD6:35 pmWashington, D.C. Dulles Intl
1h 30m
YTZ8:05 pmToronto Island
Air Transat
Sep 23
YTZ1:35 pmToronto Island
1h 31m
IAD3:06 pmWashington, D.C. Dulles Intl
Sep 30
IAD4:20 pmWashington, D.C. Dulles Intl
1h 33m
YTZ5:53 pmToronto Island
Air Transat
Oct 28
YTZ9:00 amToronto Island
1h 29m
IAD10:29 amWashington, D.C. Dulles Intl
Nov 2
IAD11:40 amWashington, D.C. Dulles Intl
1h 30m
YTZ1:10 pmToronto Island

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated August 11, 2025.
Use the filters below to find and compare flights from Ontario to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 9/16

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Fri 9/19

11:35 am-1:08 pm

Nonstop1h 33m

$187

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 9/14

8:45 am-10:16 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 9/14

4:20 pm-5:53 pm

Nonstop1h 33m

$188

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 9/24

8:10 am-9:38 am

Nonstop1h 28m

Washington, D.C. Dulles Intl

Sun 9/28

10:20 am-11:52 am

Nonstop1h 32m

$199

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 9/24

12:10 pm-1:38 pm

Nonstop1h 28m

Washington, D.C. Dulles Intl

Wed 10/1

10:20 am-11:52 am

Nonstop1h 32m

$200

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 9/24

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 9/28

9:35 am-4:45 pm

1 stop7h 10m

$210

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 11/4

4:05 pm-5:34 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 11/11

6:35 pm-8:05 pm

Nonstop1h 30m

$214

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 12/6

7:40 pm-9:20 pm

Nonstop1h 40m

Washington, D.C. Dulles Intl

Sun 12/7

8:20 am-2:01 pm

1 stop5h 41m

$214

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 9/23

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Tue 9/30

4:20 pm-5:53 pm

Nonstop1h 33m

$215

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 9/4

8:45 am-10:16 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 9/7

9:45 am-2:45 pm

1 stop5h 00m

$224

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 9/13

3:00 pm-8:41 pm

1 stop5h 41m

Washington, D.C. Dulles Intl

Sun 9/14

8:28 am-10:04 am

Nonstop1h 36m

$241

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Region of Ontario to Washington, D.C. Dulles Intl Airport

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

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, July is the cheapest month to fly from Region of Ontario to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $195. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of July, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $208.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Wednesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $278. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to Washington, D.C. Dulles Intl Airport for around $427.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Region of Ontario in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $275 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $415 on average. Flights to Washington, D.C. Dulles Intl Airport from Region of Ontario in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Ontario to Washington, D.C. Dulles Intl flight route?

Fly from Toronto Island to Washington, D.C. Dulles Intl for the best Ontario - Washington, D.C. Dulles Intl flight prices

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $284 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Region of Ontario for as low as $251 on momondo.

What cabin class options are available on Ontario to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on Ontario to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to Washington, D.C. Dulles Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Region of Ontario to Washington, D.C. Dulles Intl Airport.

Cheap Region of Ontario to Washington, D.C. Dulles Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Washington, D.C. Dulles Intl Airport

Best Price Found

$113

Fastest flight time

1h 27m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Region of Ontario in the past 72 hours is $113. The best round-trip flight deal from Region of Ontario to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $187.
The fastest flight from Region of Ontario to Washington, D.C. Dulles Intl Airport takes 1h 27m
Direct flights go from Region of Ontario to Washington, D.C. Dulles Intl Airport every day.
  • When did momondo last update prices for flights from Ontario to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Ontario to Washington, D.C. Dulles Intl Airport were last updated today.

  • How many operators does momondo search for flights from Ontario to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Ontario to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The required travel and health documents for your Washington, D.C. Dulles Intl Airport 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 Washington, D.C. Dulles Intl Airport. 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 Region of Ontario to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Region of Ontario to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Region of Ontario to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $171Free CancellationRating
7.1
9,915 reviews
Search Air Canada flights
Porter AirlinesPriceFrom $174Free CancellationRating
7.9
329 reviews
Search Porter Airlines flights
United AirlinesPriceFrom $184Free CancellationRating
7.4
8,920 reviews
Search United Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
Arlington
National Harbor
Winchester
Woodbridge
Laurel
Silver Spring
Tysons
Waldorf
Fredericksburg
Harpers Ferry
Colonial Beach
Manassas
Rockville
Towson
Gaithersburg
Fairfax
Reston
Glen Burnie

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Washington, D.C.?

Finding the right flight to Washington, D.C. from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

Can I find flights from Ontario to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Washington, D.C.?

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 Washington, D.C. from Ontario.

I’m not ready to book a flight from Ontario to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Sat 8/16
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