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Cheap flights from Washington, D.C. Dulles Intl Airport to Ontario from C$ 138

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. Dulles Intl Airport to Ontario departing on 24/4. 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 Washington, D.C. Dulles Intl Airport to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
Porter Airlines Logo
11:35 a.m. - 1:09 p.m.
IAD
-
YTZ
1h 34mdirect
Porter Airlines Logo
8:50 a.m. - 10:19 a.m.
YTZ
-
IAD
1h 29mdirect
C$ 292Porter Airlines
Wed, 7 Jan - Wed, 14 Jan
Multiple Airlines Logo
9:45 a.m. - 2:55 p.m.
IAD
-
YTZ
5h 10m1 stop
Multiple Airlines Logo
8:50 a.m. - 10:19 a.m.
YTZ
-
IAD
1h 29mdirect
C$ 294Multiple Airlines
Fri, 9 Jan - Sun, 11 Jan
Air Canada Logo
9:00 a.m. - 10:29 a.m.
IAD
-
YYZ
1h 29mdirect
Air Canada Logo
6:55 p.m. - 8:29 p.m.
YYZ
-
IAD
1h 34mdirect
C$ 296Air Canada
Tue, 3 Feb - Tue, 10 Feb
Porter Airlines Logo
6:30 p.m. - 8:00 p.m.
IAD
-
YTZ
1h 30mdirect
Porter Airlines Logo
8:50 a.m. - 10:22 a.m.
YTZ
-
IAD
1h 32mdirect
C$ 296Porter Airlines
Fri, 20 Feb - Thu, 26 Feb
Porter Airlines Logo
11:40 a.m. - 1:10 p.m.
IAD
-
YTZ
1h 30mdirect
Porter Airlines Logo
8:50 a.m. - 10:22 a.m.
YTZ
-
IAD
1h 32mdirect
C$ 298Porter Airlines
Fri, 13 Feb - Sun, 15 Feb
Air Canada Logo
9:00 a.m. - 10:29 a.m.
IAD
-
YYZ
1h 29mdirect
Air Canada Logo
6:55 p.m. - 8:29 p.m.
YYZ
-
IAD
1h 34mdirect
C$ 299Air Canada
Mon, 2 Feb - Mon, 9 Feb
Porter Airlines Logo
11:40 a.m. - 1:10 p.m.
IAD
-
YTZ
1h 30mdirect
Porter Airlines Logo
3:45 p.m. - 5:14 p.m.
YTZ
-
IAD
1h 29mdirect
C$ 299Porter Airlines
Thu, 26 Feb - Fri, 6 Mar
Porter Airlines Logo
6:30 p.m. - 8:00 p.m.
IAD
-
YTZ
1h 30mdirect
Porter Airlines Logo
11:00 a.m. - 12:29 p.m.
YTZ
-
IAD
1h 29mdirect
C$ 301Porter Airlines
Wed, 1 Apr - Sat, 11 Apr
United Airlines Logo
8:20 a.m. - 4:02 p.m.
IAD
-
YYZ
7h 42m1 stop
United Airlines Logo
7:40 p.m. - 9:25 p.m.
YYZ
-
IAD
1h 45mdirect
C$ 324United Airlines
Fri, 9 Jan - Fri, 9 Jan
United Airlines Logo
8:17 a.m. - 5:05 p.m.
IAD
-
YXU
8h 48m2 stops
United Airlines Logo
5:40 p.m. - 9:25 p.m.
YXU
-
IAD
3h 45m1 stop
C$ 966United Airlines
Sun, 1 Feb - Sun, 8 Feb

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

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Region of Ontario flight tickets
Air Canada
3 Feb
IAD9:00 a.m.Washington, D.C. Dulles Intl
1h 29m
YYZ10:29 a.m.Toronto Pearson Intl
10 Feb
YYZ6:55 p.m.Toronto Pearson Intl
1h 34m
IAD8:29 p.m.Washington, D.C. Dulles Intl
C$ 296
Find similar
Air Canada
2 Feb
IAD9:00 a.m.Washington, D.C. Dulles Intl
1h 29m
YYZ10:29 a.m.Toronto Pearson Intl
9 Feb
YYZ6:55 p.m.Toronto Pearson Intl
1h 34m
IAD8:29 p.m.Washington, D.C. Dulles Intl
C$ 299
Find similar
Air Canada
2 Feb
IAD9:45 a.m.Washington, D.C. Dulles Intl
5h 59m
1 stop
YYZ3:44 p.m.Toronto Pearson Intl
9 Feb
YYZ6:55 p.m.Toronto Pearson Intl
1h 34m
IAD8:29 p.m.Washington, D.C. Dulles Intl
C$ 306
Find similar

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

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Region of Ontario flight tickets
United Airlines
9 Jan
IAD8:20 a.m.Washington, D.C. Dulles Intl
7h 42m
1 stop
YYZ4:02 p.m.Toronto Pearson Intl
9 Jan
YYZ7:40 p.m.Toronto Pearson Intl
1h 45m
IAD9:25 p.m.Washington, D.C. Dulles Intl
C$ 324
Find similar
United Airlines
16 Jan
IAD10:06 p.m.Washington, D.C. Dulles Intl
1h 40m
YYZ11:46 p.m.Toronto Pearson Intl
21 Jan
YYZ7:40 p.m.Toronto Pearson Intl
1h 45m
IAD9:25 p.m.Washington, D.C. Dulles Intl
C$ 345
Find similar
United Airlines
24 Jan
IAD10:28 p.m.Washington, D.C. Dulles Intl
11h 30m
1 stop
YYZ9:58 a.m.Toronto Pearson Intl
25 Jan
YYZ12:45 p.m.Toronto Pearson Intl
8h 28m
1 stop
IAD9:13 p.m.Washington, D.C. Dulles Intl
C$ 352
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Region of Ontario 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 20 December 2025.
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

Wed 7/1

11:35 a.m.-1:09 p.m.

Nonstop1h 34m

Toronto Island

Wed 14/1

8:50 a.m.-10:19 a.m.

Nonstop1h 29m

C$ 292

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 9/1

9:45 a.m.-2:55 p.m.

1 stop5h 10m

Toronto Island

Sun 11/1

8:50 a.m.-10:19 a.m.

Nonstop1h 29m

C$ 294

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Tue 3/2

9:00 a.m.-10:29 a.m.

Nonstop1h 29m

Toronto Pearson Intl

Tue 10/2

6:55 p.m.-8:29 p.m.

Nonstop1h 34m

C$ 296

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 20/2

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

Nonstop1h 30m

Toronto Island

Thu 26/2

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

Nonstop1h 32m

C$ 296

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 13/2

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

Nonstop1h 30m

Toronto Island

Sun 15/2

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

Nonstop1h 32m

C$ 298

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Mon 2/2

9:00 a.m.-10:29 a.m.

Nonstop1h 29m

Toronto Pearson Intl

Mon 9/2

6:55 p.m.-8:29 p.m.

Nonstop1h 34m

C$ 299

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 26/2

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

Nonstop1h 30m

Toronto Island

Fri 6/3

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

C$ 299

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 1/4

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

Nonstop1h 30m

Toronto Island

Sat 11/4

11:00 a.m.-12:29 p.m.

Nonstop1h 29m

C$ 301

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Fri 9/1

8:20 a.m.-4:02 p.m.

1 stop7h 42m

Toronto Pearson Intl

Fri 9/1

7:40 p.m.-9:25 p.m.

Nonstop1h 45m

C$ 324

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 1/2

8:17 a.m.-5:05 p.m.

2 stops8h 48m

London

Sun 8/2

5:40 p.m.-9:25 p.m.

1 stop3h 45m

C$ 966

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 Ontario from

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

What is the cheapest month to fly to Region of Ontario?

In general, June is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 316. If you are unable to visit Region of Ontario during the month of June, then departing from Washington, D.C. Dulles Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around C$ 331.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Region of Ontario is on a Monday. Travellers who choose to depart for Region of Ontario on a Monday will often find tickets for as low as C$ 343. The most expensive day to fly to Region of Ontario is Tuesday, with ticket prices averaging around C$ 424.

What is the cheapest time of day to depart on your flight to Region of Ontario?

Our most recent data shows that the best time of day to fly to Region of Ontario is in the afternoon. Flights from Washington, D.C. Dulles Intl Airport to Region of Ontario during this time can be as low as C$ 383. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are C$ 463 on average. Flights to Region of Ontario from Washington, D.C. Dulles Intl Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

Fly from Washington, D.C. Dulles Intl to Toronto Island for the best Washington, D.C. Dulles Intl - 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. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 462 when searching 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. Dulles Intl Airport for as low as C$ 345 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl to Ontario 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 Washington, D.C. Dulles Intl Airport to Region of Ontario flights?

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

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

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

Best price found

C$ 173

Fastest flight time

1h 18m

Direct flights

Every day

Airports in Region of Ontario

123 airports
The best one-way flight to Region of Ontario from Washington, D.C. Dulles Intl Airport in the past 72 hours is C$ 173. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Region of Ontario found on momondo in the last 72 hours is C$ 345.
The fastest flight from Washington, D.C. Dulles Intl Airport to Region of Ontario takes 1h 18m
Direct flights go from Washington, D.C. Dulles Intl Airport to Region of Ontario every day.
There are 123 airports in Region of Ontario. From Washington, D.C. Dulles Intl Airport there are direct flights to Toronto Pearson Intl (YYZ), Toronto Island (YTZ).
Search flight deals

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Ontario?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Ontario refresh daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to Ontario.

  • What documentation or ID do you need to fly to Ontario?

    The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Region of Ontario?

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Region of Ontario with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 182Free CancellationRating
7.4
9,097 reviews
Search United Airlines flights
Porter AirlinesPriceFrom C$ 243Free CancellationRating
8.0
399 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 290Free CancellationRating
7.1
10,549 reviews
Search Air Canada flights

Why use momondo?

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

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

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?

momondo helps you find the best flight between Washington, D.C. and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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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