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Cheap flights from Ontario to Washington, D.C. from C$ 155

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 22/9. 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

Porter Airlines Logo
1:35 p.m. - 3:06 p.m.YTZ-IAD
1h 31mdirect
Porter Airlines Logo
11:35 a.m. - 1:08 p.m.IAD-YTZ
1h 33mdirect
C$ 257Porter Airlines
Find Deal
Tue, 16 Sep - Fri, 19 Sep
Porter Airlines Logo
8:45 a.m. - 10:16 a.m.YTZ-IAD
1h 31mdirect
Porter Airlines Logo
4:20 p.m. - 5:53 p.m.IAD-YTZ
1h 33mdirect
C$ 259Porter Airlines
Find Deal
Sun, 14 Sep - Sun, 14 Sep
Air Canada Logo
8:10 a.m. - 9:38 a.m.YYZ-IAD
1h 28mdirect
Air Canada Logo
10:20 a.m. - 11:52 a.m.IAD-YYZ
1h 32mdirect
C$ 274Air Canada
Find Deal
Wed, 24 Sep - Sun, 28 Sep
Air Canada Logo
12:10 p.m. - 1:38 p.m.YYZ-IAD
1h 28mdirect
Air Canada Logo
10:20 a.m. - 11:52 a.m.IAD-YYZ
1h 32mdirect
C$ 275Air Canada
Find Deal
Wed, 24 Sep - Wed, 1 Oct
Logo
1:35 p.m. - 3:06 p.m.YTZ-IAD
1h 31mdirect
Logo
9:35 a.m. - 4:45 p.m.IAD-YTZ
7h 10m1 stop
C$ 289
Find Deal
Wed, 24 Sep - Sun, 28 Sep
Air Transat Logo
4:05 p.m. - 5:34 p.m.YTZ-IAD
1h 29mdirect
Air Transat Logo
6:35 p.m. - 8:05 p.m.IAD-YTZ
1h 30mdirect
C$ 294Air Transat
Find Deal
Tue, 4 Nov - Tue, 11 Nov
United Airlines Logo
7:40 p.m. - 9:20 p.m.YYZ-IAD
1h 40mdirect
United Airlines Logo
8:20 a.m. - 2:01 p.m.IAD-YYZ
5h 41m1 stop
C$ 294United Airlines
Find Deal
Sat, 6 Dec - Sun, 7 Dec
Air Transat Logo
1:35 p.m. - 3:06 p.m.YTZ-IAD
1h 31mdirect
Air Transat Logo
4:20 p.m. - 5:53 p.m.IAD-YTZ
1h 33mdirect
C$ 296Air Transat
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Logo
3:25 p.m. - 9:01 p.m.YTZ-IAD
5h 36m1 stop
Logo
4:10 p.m. - 5:43 p.m.IAD-YTZ
1h 33mdirect
C$ 312
Find Deal
Sat, 30 Aug - Sun, 31 Aug
United Airlines Logo
3:00 p.m. - 8:41 p.m.YYZ-IAD
5h 41m1 stop
United Airlines Logo
8:28 a.m. - 10:04 a.m.IAD-YYZ
1h 36mdirect
C$ 331United Airlines
Find Deal
Sat, 13 Sep - Sun, 14 Sep

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
16 Sep
YTZ1:35 p.m.Toronto Island
1h 31m
IAD3:06 p.m.Washington, D.C. Dulles Intl
19 Sep
IAD11:35 a.m.Washington, D.C. Dulles Intl
1h 33m
YTZ1:08 p.m.Toronto Island
C$ 257
Find similar
Porter Airlines
14 Sep
YTZ8:45 a.m.Toronto Island
1h 31m
IAD10:16 a.m.Washington, D.C. Dulles Intl
14 Sep
IAD4:20 p.m.Washington, D.C. Dulles Intl
1h 33m
YTZ5:53 p.m.Toronto Island
C$ 259
Find similar
Porter Airlines
24 Sep
YTZ1:35 p.m.Toronto Island
1h 31m
IAD3:06 p.m.Washington, D.C. Dulles Intl
1 Oct
IAD4:20 p.m.Washington, D.C. Dulles Intl
1h 33m
YTZ5:53 p.m.Toronto Island
C$ 260
Find similar

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
4 Nov
YTZ4:05 p.m.Toronto Island
1h 29m
IAD5:34 p.m.Washington, D.C. Dulles Intl
11 Nov
IAD6:35 p.m.Washington, D.C. Dulles Intl
1h 30m
YTZ8:05 p.m.Toronto Island
C$ 294
Find similar
Air Transat
23 Sep
YTZ1:35 p.m.Toronto Island
1h 31m
IAD3:06 p.m.Washington, D.C. Dulles Intl
30 Sep
IAD4:20 p.m.Washington, D.C. Dulles Intl
1h 33m
YTZ5:53 p.m.Toronto Island
C$ 296
Find similar
Air Transat
28 Oct
YTZ9:00 a.m.Toronto Island
1h 29m
IAD10:29 a.m.Washington, D.C. Dulles Intl
2 Nov
IAD11:40 a.m.Washington, D.C. Dulles Intl
1h 30m
YTZ1:10 p.m.Toronto Island
C$ 297
Find similar

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 11 August 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 16/9

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Fri 19/9

11:35 a.m.-1:08 p.m.

Nonstop1h 33m

C$ 257

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 14/9

8:45 a.m.-10:16 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 14/9

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

C$ 259

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 24/9

8:10 a.m.-9:38 a.m.

Nonstop1h 28m

Washington, D.C. Dulles Intl

Sun 28/9

10:20 a.m.-11:52 a.m.

Nonstop1h 32m

C$ 274

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 24/9

12:10 p.m.-1:38 p.m.

Nonstop1h 28m

Washington, D.C. Dulles Intl

Wed 1/10

10:20 a.m.-11:52 a.m.

Nonstop1h 32m

C$ 275

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 24/9

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 28/9

9:35 a.m.-4:45 p.m.

1 stop7h 10m

C$ 289

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 4/11

4:05 p.m.-5:34 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 11/11

6:35 p.m.-8:05 p.m.

Nonstop1h 30m

C$ 294

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 6/12

7:40 p.m.-9:20 p.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Sun 7/12

8:20 a.m.-2:01 p.m.

1 stop5h 41m

C$ 294

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 23/9

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Tue 30/9

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

C$ 296

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 30/8

3:25 p.m.-9:01 p.m.

1 stop5h 36m

Washington, D.C. Dulles Intl

Sun 31/8

4:10 p.m.-5:43 p.m.

Nonstop1h 33m

C$ 312

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 13/9

3:00 p.m.-8:41 p.m.

1 stop5h 41m

Washington, D.C. Dulles Intl

Sun 14/9

8:28 a.m.-10:04 a.m.

Nonstop1h 36m

C$ 331

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?

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$ 268, 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$ 286.

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$ 528. 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$ 872.

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$ 486. 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$ 748 per ticket.

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 C$ 391 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$ 345 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$ 155

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 C$ 155. 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$ 257.
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.
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$ 203Free CancellationRating
7.8
426 reviews
Search Air Transat flights
Porter AirlinesPriceFrom C$ 211Free CancellationRating
7.9
329 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 263Free CancellationRating
7.1
9,915 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 276Free CancellationRating
7.4
8,920 reviews
Search United Airlines flights
WestJetPriceFrom C$ 429Free CancellationRating
7.2
3,006 reviews
Search WestJet flights

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

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

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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