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Cheap flights from Ontario to Washington, D.C. from C$ 170

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 16/3. 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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Find the cheapest flights from Ontario to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Porter Airlines Logo
8:55 a.m. - 10:24 a.m.
YTZ
-
IAD
1h 29mdirect
Porter Airlines Logo
6:30 p.m. - 8:00 p.m.
IAD
-
YTZ
1h 30mdirect
C$ 267Porter Airlines
Fri, 10 Apr - Sun, 12 Apr
Porter Airlines Logo
8:50 a.m. - 10:22 a.m.
YTZ
-
IAD
1h 32mdirect
Porter Airlines Logo
11:40 a.m. - 1:10 p.m.
IAD
-
YTZ
1h 30mdirect
C$ 269Porter Airlines
Thu, 19 Feb - Wed, 25 Feb
Air Canada Logo
1:00 p.m. - 7:40 p.m.
YYZ
-
IAD
6h 40m
1 stop
Air Canada Logo
9:55 a.m. - 4:39 p.m.
IAD
-
YYZ
6h 44m
1 stop
C$ 269Air Canada
Fri, 24 Apr - Sun, 26 Apr
Porter Airlines Logo
8:55 a.m. - 10:24 a.m.
YTZ
-
IAD
1h 29mdirect
Porter Airlines Logo
11:30 a.m. - 1:01 p.m.
IAD
-
YTZ
1h 31mdirect
C$ 272Porter Airlines
Mon, 27 Apr - Tue, 5 May
Air Canada Logo
5:30 p.m. - 9:23 p.m.
YYZ
-
IAD
3h 53m
1 stop
Air Canada Logo
1:02 p.m. - 6:34 p.m.
IAD
-
YYZ
5h 32m
1 stop
C$ 285Air Canada
Wed, 25 Feb - Wed, 4 Mar
Multiple Airlines Logo
8:50 a.m. - 10:22 a.m.
YTZ
-
IAD
1h 32mdirect
Multiple Airlines Logo
9:45 a.m. - 2:25 p.m.
IAD
-
YTZ
4h 40m
1 stop
C$ 288Multiple Airlines
Thu, 19 Feb - Mon, 23 Feb
United Airlines Logo
8:45 a.m. - 5:30 p.m.
YYZ
-
IAD
8h 45m
1 stop
United Airlines Logo
10:09 p.m. - 11:46 p.m.
IAD
-
YYZ
1h 37mdirect
C$ 297United Airlines
Tue, 17 Feb - Tue, 17 Feb
Delta Logo
6:00 a.m. - 11:53 a.m.
YUL
-
IAD
5h 53m
1 stop
Delta Logo
7:00 a.m. - 1:40 p.m.
IAD
-
YUL
6h 40m
1 stop
C$ 368Delta
Tue, 17 Feb - Thu, 26 Feb
Delta Logo
9:29 a.m. - 8:45 p.m.
YUL
-
IAD
11h 16m
2 stops
Delta Logo
7:15 a.m. - 4:53 p.m.
IAD
-
YUL
9h 38m
1 stop
C$ 377Delta
Thu, 19 Feb - Sun, 22 Feb
United Airlines Logo
7:30 p.m. - 9:23 p.m.
YOW
-
IAD
1h 53mdirect
United Airlines Logo
8:26 a.m. - 1:32 p.m.
IAD
-
YOW
5h 06m
1 stop
C$ 402United Airlines
Mon, 9 Mar - Tue, 10 Mar

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

Our best Air Canada deals on Region of Ontario to Washington, D.C. Dulles Intl Airport flight tickets
Air Canada
24 Apr
YYZ1:00 p.m.Toronto Pearson Intl
6h 40m
1 stop
IAD7:40 p.m.Washington, D.C. Dulles Intl
26 Apr
IAD9:55 a.m.Washington, D.C. Dulles Intl
6h 44m
1 stop
YYZ4:39 p.m.Toronto Pearson Intl
C$ 269
Air Canada
25 Feb
YYZ5:30 p.m.Toronto Pearson Intl
3h 53m
1 stop
IAD9:23 p.m.Washington, D.C. Dulles Intl
4 Mar
IAD1:02 p.m.Washington, D.C. Dulles Intl
5h 32m
1 stop
YYZ6:34 p.m.Toronto Pearson Intl
C$ 285
Air Canada
2 May
YYZ12:00 p.m.Toronto Pearson Intl
4h 30m
1 stop
IAD4:30 p.m.Washington, D.C. Dulles Intl
13 May
IAD8:15 a.m.Washington, D.C. Dulles Intl
4h 55m
1 stop
YYZ1:10 p.m.Toronto Pearson Intl
C$ 286

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

Our best Delta deals on Region of Ontario to Washington, D.C. Dulles Intl Airport flight tickets
Delta
17 Feb
YYZ7:45 a.m.Toronto Pearson Intl
4h 08m
1 stop
IAD11:53 a.m.Washington, D.C. Dulles Intl
27 Feb
IAD6:00 a.m.Washington, D.C. Dulles Intl
5h 18m
1 stop
YYZ11:18 a.m.Toronto Pearson Intl
C$ 329
Delta
17 Feb
YYZ12:11 p.m.Toronto Pearson Intl
4h 17m
1 stop
IAD4:28 p.m.Washington, D.C. Dulles Intl
26 Feb
IAD12:24 p.m.Washington, D.C. Dulles Intl
4h 54m
1 stop
YYZ5:18 p.m.Toronto Pearson Intl
C$ 338
Delta
18 Feb
YYZ10:05 a.m.Toronto Pearson Intl
6h 23m
1 stop
IAD4:28 p.m.Washington, D.C. Dulles Intl
25 Feb
IAD6:00 a.m.Washington, D.C. Dulles Intl
5h 18m
1 stop
YYZ11:18 a.m.Toronto Pearson Intl
C$ 339

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 96,600 searches. Data last updated 29 January 2026.
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

Fri 10/4

8:55 a.m.-10:24 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 12/4

6:30 p.m.-8:00 p.m.

Nonstop1h 30m

C$ 267

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 19/2

8:50 a.m.-10:22 a.m.

Nonstop1h 32m

Washington, D.C. Dulles Intl

Wed 25/2

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

C$ 269

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 24/4

1:00 p.m.-7:40 p.m.

1 stop6h 40m

Washington, D.C. Dulles Intl

Sun 26/4

9:55 a.m.-4:39 p.m.

1 stop6h 44m

C$ 269

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 27/4

8:55 a.m.-10:24 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 5/5

11:30 a.m.-1:01 p.m.

Nonstop1h 31m

C$ 272

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 25/2

5:30 p.m.-9:23 p.m.

1 stop3h 53m

Washington, D.C. Dulles Intl

Wed 4/3

1:02 p.m.-6:34 p.m.

1 stop5h 32m

C$ 285

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 19/2

8:50 a.m.-10:22 a.m.

Nonstop1h 32m

Washington, D.C. Dulles Intl

Mon 23/2

9:45 a.m.-2:25 p.m.

1 stop4h 40m

C$ 288

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 17/2

8:45 a.m.-5:30 p.m.

1 stop8h 45m

Washington, D.C. Dulles Intl

Tue 17/2

10:09 p.m.-11:46 p.m.

Nonstop1h 37m

C$ 297

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 17/2

6:00 a.m.-11:53 a.m.

1 stop5h 53m

Washington, D.C. Dulles Intl

Thu 26/2

7:00 a.m.-1:40 p.m.

1 stop6h 40m

C$ 368

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 19/2

9:29 a.m.-8:45 p.m.

2 stops11h 16m

Washington, D.C. Dulles Intl

Sun 22/2

7:15 a.m.-4:53 p.m.

1 stop9h 38m

C$ 377

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 9/3

7:30 p.m.-9:23 p.m.

Nonstop1h 53m

Washington, D.C. Dulles Intl

Tue 10/3

8:26 a.m.-1:32 p.m.

1 stop5h 06m

C$ 402

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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?

The cheapest month to fly to Washington, D.C. Dulles Intl Airport from Region of Ontario is in July. Flight prices, which tend to average around C$ 265, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. Dulles Intl Airport in July, then you should wait until June to fly from Region of Ontario, when ticket prices are also cheap, with an average price of C$ 282.

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

According to our data, Friday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from Region of Ontario. The lowest ticket price found for a Friday departure recently was C$ 511. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Washington, D.C. Dulles Intl Airport on Monday is C$ 866.

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

Our most recent data shows that the best time of day to fly to Washington, D.C. Dulles Intl Airport is in the afternoon. Flights from Region of Ontario to Washington, D.C. Dulles Intl Airport during this time can be as low as C$ 478. In the evening is when there is more demand to fly to Washington, D.C. Dulles Intl Airport, so prices are often more expensive at around C$ 813 per ticket.

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

Fly from Toronto Pearson Intl 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 C$ 393 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 C$ 322 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

C$ 187

Fastest flight time

1h 25m

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 C$ 187. 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 C$ 272.
The fastest flight from Region of Ontario to Washington, D.C. Dulles Intl Airport takes 1h 25m
Direct flights go from Region of Ontario to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

  • 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 are updated daily.

  • 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted 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 TransatPriceFrom C$ 206Free CancellationRating
7.7
501 reviews
Search Air Transat flights
Porter AirlinesPriceFrom C$ 208Free CancellationRating
7.9
412 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 255Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 256Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Gettysburg
Alexandria
Gaithersburg
Fairfax
Linthicum Heights
Bethesda
Silver Spring
National Harbor
Reston
Herndon
Laurel
Chantilly
Winchester
Arlington
Leesburg
Fredericksburg
Manassas
Ashburn
Woodbridge
Rockville

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Ontario.

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

Flights from Ontario to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Ontario to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Ontario to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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