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

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

What airlines fly to Region of Ontario?

Air Canada, United Airlines and Porter 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 50% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 4 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 February 2026, there are 4 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?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 you'll need for your trip to Ontario 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 Ontario. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$96 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 33 per day as of February 2026. The most frequent departure time is 5:00PM, with 60% 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?

As of February 2026, there are 236 flights per week flying from Washington, D.C. Dulles Intl Airport to Region of Ontario. The most common day of the week flights depart is Mon, with 15% of flights 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 am - 1:10 pm

IAD

YTZ

1h 30mnonstop

3:45 pm - 5:14 pm

YTZ

IAD

1h 29mnonstop

$217Porter Airlines

Thu, Feb 26 - Sun, Mar 1

11:40 am - 1:10 pm

IAD

YTZ

1h 30mnonstop

8:55 am - 10:24 am

YTZ

IAD

1h 29mnonstop

$218Porter Airlines

Wed, Mar 4 - Wed, Mar 11

11:40 am - 1:10 pm

IAD

YTZ

1h 30mnonstop

4:25 pm - 8:54 pm

YTZ

IAD

4h 29m

1 stop

$226Multiple Airlines

Thu, Feb 26 - Mon, Mar 2

4:30 pm - 6:03 pm

IAD

YYZ

1h 33mnonstop

6:55 pm - 8:26 pm

YYZ

IAD

1h 31mnonstop

$227Air Canada

Sat, Mar 14 - Mon, Mar 16

4:30 pm - 6:03 pm

IAD

YYZ

1h 33mnonstop

6:55 pm - 8:26 pm

YYZ

IAD

1h 31mnonstop

$237Air Canada

Sat, Mar 14 - Mon, Mar 16

8:15 am - 12:14 am

IAD

YYZ

15h 59m

1 stop

7:10 am - 9:25 am

YYZ

IAD

26h 15m

1 stop

$240Multiple Airlines

Mon, Mar 2 - Wed, Mar 4

7:00 pm - 5:15 pm

IAD

YHM

22h 15m

1 stop

6:10 pm - 6:10 pm

YHM

IAD

24h 00m

1 stop

$576WestJet

Fri, May 15 - Sun, May 17

7:00 pm - 5:15 pm

IAD

YHM

22h 15m

1 stop

6:10 pm - 6:10 pm

YHM

IAD

24h 00m

1 stop

$604WestJet

Fri, May 15 - Sun, May 17

4:25 pm - 10:49 pm

IAD

YQT

6h 24m

1 stop

11:25 am - 11:12 pm

YQT

IAD

11h 47m

2 stops

$617United Airlines

Thu, Jul 23 - Sun, Jul 26

9:55 am - 1:45 pm

IAD

YSB

3h 50m

1 stop

9:45 am - 3:29 pm

YSB

IAD

5h 44m

1 stop

$626United Airlines

Wed, Jul 8 - Sun, Jul 12

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

Mar 16

IAD4:30 pmWashington, D.C. Dulles Intl

1h 33m

YYZ6:03 pmToronto Pearson Intl

Mar 18

YYZ6:55 pmToronto Pearson Intl

1h 31m

IAD8:26 pmWashington, D.C. Dulles Intl

$246

Air Canada

Jul 16

IAD9:55 amWashington, D.C. Dulles Intl

1h 26m

YYZ11:21 amToronto Pearson Intl

Jul 20

YYZ2:00 pmToronto Pearson Intl

1h 29m

IAD3:29 pmWashington, D.C. Dulles Intl

$250

Air Canada

May 11

IAD9:55 amWashington, D.C. Dulles Intl

1h 27m

YYZ11:22 amToronto Pearson Intl

May 12

YYZ6:55 pmToronto Pearson Intl

1h 34m

IAD8:29 pmWashington, D.C. Dulles Intl

$253

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

Apr 16

IAD6:00 amWashington, D.C. Dulles Intl

5h 43m

1 stop

YYZ11:43 amToronto Pearson Intl

Apr 16

YYZ2:30 pmToronto Pearson Intl

1h 39m

IAD4:09 pmWashington, D.C. Dulles Intl

$274

United Airlines

Apr 12

IAD10:14 pmWashington, D.C. Dulles Intl

1h 40m

YYZ11:54 pmToronto Pearson Intl

Apr 21

YYZ9:44 amToronto Pearson Intl

1h 39m

IAD11:23 amWashington, D.C. Dulles Intl

$289

United Airlines

Apr 17

IAD6:15 amWashington, D.C. Dulles Intl

5h 34m

1 stop

YYZ11:49 amToronto Pearson Intl

Apr 23

YYZ7:43 pmToronto Pearson Intl

1h 42m

IAD9:25 pmWashington, D.C. Dulles Intl

$299

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

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 2/26

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 3/1

3:45 pm-5:14 pm

Nonstop1h 29m

$217

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 3/4

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Wed 3/11

8:55 am-10:24 am

Nonstop1h 29m

$218

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 2/26

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Mon 3/2

4:25 pm-8:54 pm

1 stop4h 29m

$226

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 3/14

4:30 pm-6:03 pm

Nonstop1h 33m

Toronto Pearson Intl

Mon 3/16

6:55 pm-8:26 pm

Nonstop1h 31m

$227

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 3/14

4:30 pm-6:03 pm

Nonstop1h 33m

Toronto Pearson Intl

Mon 3/16

6:55 pm-8:26 pm

Nonstop1h 31m

$237

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Mon 3/2

8:15 am-12:14 am

1 stop15h 59m

Toronto Pearson Intl

Wed 3/4

7:10 am-9:25 am

1 stop26h 15m

$240

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Fri 5/15

7:00 pm-5:15 pm

1 stop22h 15m

Hamilton

Sun 5/17

6:10 pm-6:10 pm

1 stop24h 00m

$576

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Fri 5/15

7:00 pm-5:15 pm

1 stop22h 15m

Hamilton

Sun 5/17

6:10 pm-6:10 pm

1 stop24h 00m

$604

Washington, D.C.Thunder Bay

IAD - YQT

IADYQT

Washington, D.C. Dulles Intl

Thu 7/23

4:25 pm-10:49 pm

1 stop6h 24m

Thunder Bay

Sun 7/26

11:25 am-11:12 pm

2 stops11h 47m

$617

Washington, D.C.Sudbury

IAD - YSB

IADYSB

Washington, D.C. Dulles Intl

Wed 7/8

9:55 am-1:45 pm

1 stop3h 50m

Sudbury

Sun 7/12

9:45 am-3:29 pm

1 stop5h 44m

$626

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?

The month of June is, on average, the cheapest month to fly to Region of Ontario from Washington, D.C. Dulles Intl Airport, with most prices found around $229. If you aren’t able to travel during the month of June, then book flights to Region of Ontario from Washington, D.C. Dulles Intl Airport during January instead. Flights to Region of Ontario in January, while not as cheap as those in June, still average around $252.

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

According to our data, Friday is the cheapest day to fly to Region of Ontario from Washington, D.C. Dulles Intl Airport. The lowest ticket price found for a Friday departure recently was $339. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Washington, D.C. Dulles Intl Airport to Region of Ontario on a Sunday will generally be more expensive and average around $497. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Region of Ontario is in the afternoon. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Region of Ontario in the afternoon for as low as $333. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $598.

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 $339 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 $264 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	$130
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 $130. 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 $225.

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?
As of February 2026, there are 4 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?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 you'll need for your trip to Ontario 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 Ontario. 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 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 23.33% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 20.88%, Canadair (Bombardier) Regional Jet 900 at 14.86%, and Embraer 175 at 10.88%.

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 $54	Free Cancellation	Rating 7.9 415 reviews	Search Porter Airlines flights
Air Canada	PriceFrom $155	Free Cancellation	Rating 7.1 10,715 reviews	Search Air Canada flights
Air Transat	PriceFrom $176	Free Cancellation	Rating 7.7 508 reviews	Search Air Transat flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 9,284 reviews	Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Ontario. momondo saves you time and could save you money on your trip.

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

Flights from Washington, D.C. to Ontario 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 Washington, D.C. to Ontario?

Once you have performed a search for Washington, D.C. to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from Washington, D.C. and alert you when they change.

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Popular cities in Ontario

Flights to Torontofrom $122

Flights to Vancouverfrom $104

Flights to Montrealfrom $159

Flights to Calgaryfrom $141

Flights to Ottawafrom $225

Flights to Halifaxfrom $194

Flights to Winnipegfrom $176

Flights to Québec Cityfrom $299

Flights to Kelownafrom $174

Flights to Saskatoonfrom $198

Flights to St. John'sfrom $341

Flights to Reginafrom $233

Cheap flights from Washington, D.C. Dulles Intl Airport to Ontario from $96

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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

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

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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?

What 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?

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

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

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

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

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

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