What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Ontario?

Porter Airlines, United Airlines, and Air Canada are the most popular carriers operating from Washington, D.C. Dulles Intl to Ontario

Which airlines fly to Region of Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Region of Ontario from Washington, D.C. Dulles Intl Airport according to our data. Air Canada is the first choice among our users, with 45% of people opting to fly with this airline when travelling to Region of Ontario. Keep in mind that there are 3 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

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

As of April 2026, there are 3 operators available to choose from 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.

C$ 153 Cheap Flights from Washington, D.C. Dulles Intl Airport to Region of Ontario in 2026

Q: How many flights depart from Washington, D.C. Dulles Intl Airport to Region of Ontario on average per day?

The number of flights available between Washington, D.C. Dulles Intl Airport and Region of Ontario is 39 per day as of April 2026. The most frequent departure time is 5:00p.m., with 61% of daily flights leaving in the afternoon.

Q: How many flights depart from Washington, D.C. Dulles Intl Airport to Region of Ontario on average per week?

275 flights are operational weekly from Washington, D.C. Dulles Intl Airport to Region of Ontario as of April 2026. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

IAD

YTZ

1h 30mdirect

9:25 a.m. - 10:54 a.m.

YTZ

IAD

1h 29mdirect

C$ 290Porter Airlines

Thu, 23 Apr - Mon, 27 Apr

11:30 a.m. - 1:00 p.m.

IAD

YTZ

1h 30mdirect

1:45 p.m. - 3:16 p.m.

YTZ

IAD

1h 31mdirect

C$ 291Porter Airlines

Sat, 30 May - Thu, 18 Jun

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

IAD

YTZ

1h 30mdirect

9:25 a.m. - 10:54 a.m.

YTZ

IAD

1h 29mdirect

C$ 293Porter Airlines

Tue, 14 Apr - Tue, 21 Apr

4:05 p.m. - 5:30 p.m.

IAD

YYZ

1h 25mdirect

1:55 p.m. - 3:29 p.m.

YYZ

IAD

1h 34mdirect

C$ 316Air Canada

Tue, 12 May - Tue, 19 May

9:55 a.m. - 11:22 a.m.

IAD

YYZ

1h 27mdirect

1:55 p.m. - 3:29 p.m.

YYZ

IAD

1h 34mdirect

C$ 318Air Canada

Wed, 13 May - Wed, 20 May

11:40 a.m. - 5:45 p.m.

IAD

YUL

6h 05m

1 stop

5:00 p.m. - 6:58 p.m.

YUL

IAD

1h 58mdirect

C$ 352Multiple Airlines

Mon, 27 Apr - Mon, 4 May

11:40 a.m. - 4:30 p.m.

IAD

YUL

4h 50m

1 stop

9:10 a.m. - 3:29 p.m.

YUL

IAD

6h 19m

1 stop

C$ 357Multiple Airlines

Mon, 27 Apr - Mon, 4 May

4:05 p.m. - 9:38 p.m.

IAD

YXU

5h 33m

1 stop

9:30 a.m. - 3:29 p.m.

YXU

IAD

5h 59m

1 stop

C$ 977United Airlines

Mon, 11 May - Mon, 18 May

8:20 a.m. - 5:33 p.m.

IAD

YXU

9h 13m

2 stops

9:30 a.m. - 2:24 p.m.

YXU

IAD

4h 54m

1 stop

C$ 990United Airlines

Tue, 12 May - Tue, 19 May

6:00 a.m. - 5:15 p.m.

IAD

YHM

35h 15m

3 stops

6:10 p.m. - 11:32 p.m.

YHM

IAD

29h 22m

3 stops

C$ 1,544WestJet

Wed, 29 Apr - Fri, 1 May

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

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Region of Ontario flight tickets

Delta

23 Apr

IAD6:00 a.m.Washington, D.C. Dulles Intl

7h 24m

1 stop

YYZ1:24 p.m.Toronto Pearson Intl

27 Apr

YYZ6:00 a.m.Toronto Pearson Intl

6h 05m

1 stop

IAD12:05 p.m.Washington, D.C. Dulles Intl

C$ 407

Delta

15 Apr

IAD6:00 a.m.Washington, D.C. Dulles Intl

5h 38m

1 stop

YUL11:38 a.m.Montreal Pierre Elliott Trudeau Intl

16 Apr

YUL6:45 p.m.Montreal Pierre Elliott Trudeau Intl

5h 57m

1 stop

IAD12:42 a.m.Washington, D.C. Dulles Intl

C$ 475

Delta

14 Apr

IAD6:00 a.m.Washington, D.C. Dulles Intl

5h 36m

1 stop

YUL11:36 a.m.Montreal Pierre Elliott Trudeau Intl

16 Apr

YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl

4h 18m

1 stop

IAD10:18 a.m.Washington, D.C. Dulles Intl

C$ 476

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

Our best Lufthansa deals on Washington, D.C. Dulles Intl Airport to Region of Ontario flight tickets

Lufthansa

16 Apr

IAD6:15 a.m.Washington, D.C. Dulles Intl

5h 34m

1 stop

YYZ11:49 a.m.Toronto Pearson Intl

20 Apr

YYZ12:45 p.m.Toronto Pearson Intl

1h 39m

IAD2:24 p.m.Washington, D.C. Dulles Intl

C$ 404

Lufthansa

7 May

IAD8:19 a.m.Washington, D.C. Dulles Intl

1h 45m

YYZ10:04 a.m.Toronto Pearson Intl

10 May

YYZ9:35 a.m.Toronto Pearson Intl

1h 39m

IAD11:14 a.m.Washington, D.C. Dulles Intl

C$ 415

Lufthansa

7 May

IAD8:20 a.m.Washington, D.C. Dulles Intl

7h 26m

1 stop

YYZ3:46 p.m.Toronto Pearson Intl

10 May

YYZ9:35 a.m.Toronto Pearson Intl

1h 39m

IAD11:14 a.m.Washington, D.C. Dulles Intl

C$ 428

momondo Fare Finder

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

Cheapest round-trip

Quickest round-trip

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 23/4

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

Nonstop1h 30m

Toronto Island

Mon 27/4

9:25 a.m.-10:54 a.m.

Nonstop1h 29m

C$ 290

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sat 30/5

11:30 a.m.-1:00 p.m.

Nonstop1h 30m

Toronto Island

Thu 18/6

1:45 p.m.-3:16 p.m.

Nonstop1h 31m

C$ 291

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Tue 14/4

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

Nonstop1h 30m

Toronto Island

Tue 21/4

9:25 a.m.-10:54 a.m.

Nonstop1h 29m

C$ 293

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Tue 12/5

4:05 p.m.-5:30 p.m.

Nonstop1h 25m

Toronto Pearson Intl

Tue 19/5

1:55 p.m.-3:29 p.m.

Nonstop1h 34m

C$ 316

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 13/5

9:55 a.m.-11:22 a.m.

Nonstop1h 27m

Toronto Pearson Intl

Wed 20/5

1:55 p.m.-3:29 p.m.

Nonstop1h 34m

C$ 318

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Mon 27/4

11:40 a.m.-5:45 p.m.

1 stop6h 05m

Montreal Pierre Elliott Trudeau Intl

Mon 4/5

5:00 p.m.-6:58 p.m.

Nonstop1h 58m

C$ 352

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Mon 27/4

11:40 a.m.-4:30 p.m.

1 stop4h 50m

Montreal Pierre Elliott Trudeau Intl

Mon 4/5

9:10 a.m.-3:29 p.m.

1 stop6h 19m

C$ 357

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 11/5

4:05 p.m.-9:38 p.m.

1 stop5h 33m

London

Mon 18/5

9:30 a.m.-3:29 p.m.

1 stop5h 59m

C$ 977

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 12/5

8:20 a.m.-5:33 p.m.

2 stops9h 13m

London

Tue 19/5

9:30 a.m.-2:24 p.m.

1 stop4h 54m

C$ 990

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Wed 29/4

6:00 a.m.-5:15 p.m.

3 stops35h 15m

Hamilton

Fri 1/5

6:10 p.m.-11:32 p.m.

3 stops29h 22m

C$ 1,544

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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$ 323. 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 January is also very affordable. Most momondo users find prices during this month for around C$ 351.

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 Sunday. Travellers who choose to depart for Region of Ontario on a Sunday will often find tickets for as low as C$ 364. The most expensive day to fly to Region of Ontario is Tuesday, with ticket prices averaging around C$ 428.

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$ 384. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are C$ 476 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$ 477 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$ 371 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$ 186
Fastest flight time	1h 26m
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$ 186. 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$ 286.

The fastest flight from Washington, D.C. Dulles Intl Airport to Region of Ontario takes 1h 26m

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?
As of April 2026, there are 3 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. Dulles Intl Airport to Region of Ontario is De Havilland (Bombardier) DHC-8-400 Dash 8Q, representing 23.64% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 22.44%, Embraer 175 at 13.56%, and Canadair (Bombardier) Regional Jet 900 at 13.20%.

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
Porter Airlines	PriceFrom C$ 166	Free Cancellation	Rating 8.0 430 reviews	Search Porter Airlines flights
Air Canada	PriceFrom C$ 339	Free Cancellation	Rating 7.1 10,873 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 365	Free Cancellation	Rating 7.4 9,529 reviews	Search United Airlines 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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Popular Cities in Ontario

Flights to Torontofrom C$ 141

Flights to Vancouverfrom C$ 85

Flights to Montrealfrom C$ 255

Flights to Calgaryfrom C$ 117

Flights to Ottawafrom C$ 238

Flights to Winnipegfrom C$ 110

Flights to Halifaxfrom C$ 182

Flights to Kelownafrom C$ 143

Flights to Saskatoonfrom C$ 208

Flights to Reginafrom C$ 205

Flights to St. John'sfrom C$ 244

Flights to Québec Cityfrom C$ 279

Cheap flights from Washington, D.C. Dulles Intl Airport to Ontario from C$ 153

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

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Region of Ontario flight tickets

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

Our best Lufthansa deals on Washington, D.C. Dulles Intl Airport to Region of Ontario flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Ontario that are best for you.

See travel insights to Ontario from

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

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

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

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

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

How far in advance should I book a flight to Region of Ontario?

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

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

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Ontario?

Which airlines fly to Region of Ontario?

How many flights depart from Washington, D.C. Dulles Intl Airport to Region of Ontario on average per day?

How many flights depart from Washington, D.C. Dulles Intl Airport to Region of Ontario on average per week?

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

Fastest flight time

Direct flights

Airports in 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

Why use momondo?

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

Popular Cities in Ontario

Popular flights according to clicks in the last 7 days on momondo

Washington, D.C. Dulles Intl Airport flight routes

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