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

Porter Airlines, Air Canada, and Air Transat 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 5 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 November 2025, there are 5 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.

$101 Cheap Flights from Washington, D.C. Dulles Intl Airport to Region of Ontario in 2025/26

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 34 per day as of November 2025. The most frequent departure time is 5:00PM, with 62% 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 November 2025, there are 240 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:40 am - 1:10 pmIAD-YTZ

1h 30mnonstop

8:55 am - 10:24 amYTZ-IAD

1h 29mnonstop

$210Porter Airlines

Find Deal

Thu, Dec 11 - Sun, Dec 14

6:30 pm - 8:00 pmIAD-YTZ

1h 30mnonstop

3:45 pm - 5:14 pmYTZ-IAD

1h 29mnonstop

$211Porter Airlines

Find Deal

Tue, Nov 25 - Fri, Nov 28

6:30 pm - 8:00 pmIAD-YTZ

1h 30mnonstop

3:45 pm - 5:14 pmYTZ-IAD

1h 29mnonstop

$212Porter Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

11:40 am - 1:10 pmIAD-YTZ

1h 30mnonstop

3:45 pm - 5:14 pmYTZ-IAD

1h 29mnonstop

$213Porter Airlines

Find Deal

Wed, Dec 10 - Fri, Dec 12

4:30 pm - 6:03 pmIAD-YYZ

1h 33mnonstop

2:15 pm - 3:50 pmYYZ-IAD

1h 35mnonstop

$233Air Canada

Find Deal

Thu, Jan 29 - Sun, Feb 1

2:30 pm - 4:00 pmIAD-YTZ

1h 30mnonstop

3:45 pm - 5:14 pmYTZ-IAD

1h 29mnonstop

$238Multiple Airlines

Find Deal

Thu, Dec 25 - Sat, Jan 3

9:00 am - 10:29 amIAD-YYZ

1h 29mnonstop

2:00 pm - 8:59 pmYYZ-IAD

6h 59m1 stop

$246Air Canada

Find Deal

Thu, Dec 11 - Thu, Dec 11

11:40 am - 1:10 pmIAD-YTZ

1h 30mnonstop

8:55 am - 10:24 amYTZ-IAD

1h 29mnonstop

$259Multiple Airlines

Find Deal

Thu, Jan 29 - Sun, Feb 1

6:30 pm - 8:00 pmIAD-YTZ

1h 30mnonstop

3:45 pm - 5:14 pmYTZ-IAD

1h 29mnonstop

$265Air Transat

Find Deal

Sat, Dec 20 - Sat, Jan 3

6:00 am - 5:17 pmIAD-YHM

35h 17m3 stops

6:10 pm - 11:03 pmYHM-IAD

28h 53m3 stops

$1,711WestJet

Find Deal

Sun, Nov 23 - Sun, Nov 30

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

Dec 4

IAD6:00 amWashington, D.C. Dulles Intl

5h 25m

1 stop

YYZ11:25 amToronto Pearson Intl

Dec 10

YYZ6:05 amToronto Pearson Intl

4h 21m

1 stop

IAD10:26 amWashington, D.C. Dulles Intl

$289

Find similar

Delta

Nov 20

IAD11:05 amWashington, D.C. Dulles Intl

3h 43m

1 stop

YYZ2:48 pmToronto Pearson Intl

Nov 24

YYZ6:05 pmToronto Pearson Intl

4h 58m

1 stop

IAD11:03 pmWashington, D.C. Dulles Intl

$311

Find similar

Delta

Dec 12

IAD6:00 amWashington, D.C. Dulles Intl

8h 48m

1 stop

YYZ2:48 pmToronto Pearson Intl

Dec 15

YYZ3:38 pmToronto Pearson Intl

7h 30m

1 stop

IAD11:08 pmWashington, D.C. Dulles Intl

$329

Find similar

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

Jan 29

IAD4:30 pmWashington, D.C. Dulles Intl

1h 33m

YYZ6:03 pmToronto Pearson Intl

Feb 1

YYZ2:15 pmToronto Pearson Intl

1h 35m

IAD3:50 pmWashington, D.C. Dulles Intl

$233

Find similar

Air Canada

Dec 11

IAD9:00 amWashington, D.C. Dulles Intl

1h 29m

YYZ10:29 amToronto Pearson Intl

Dec 11

YYZ2:00 pmToronto Pearson Intl

6h 59m

1 stop

IAD8:59 pmWashington, D.C. Dulles Intl

$246

Find similar

Air Canada

Jan 29

IAD4:30 pmWashington, D.C. Dulles Intl

1h 33m

YYZ6:03 pmToronto Pearson Intl

Feb 2

YYZ2:15 pmToronto Pearson Intl

1h 35m

IAD3:50 pmWashington, D.C. Dulles Intl

$249

Find similar

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 12/11

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 12/14

8:55 am-10:24 am

Nonstop1h 29m

$210

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Tue 11/25

6:30 pm-8:00 pm

Nonstop1h 30m

Toronto Island

Fri 11/28

3:45 pm-5:14 pm

Nonstop1h 29m

$211

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Tue 12/2

6:30 pm-8:00 pm

Nonstop1h 30m

Toronto Island

Tue 12/9

3:45 pm-5:14 pm

Nonstop1h 29m

$212

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 12/10

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Fri 12/12

3:45 pm-5:14 pm

Nonstop1h 29m

$213

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Thu 1/29

4:30 pm-6:03 pm

Nonstop1h 33m

Toronto Pearson Intl

Sun 2/1

2:15 pm-3:50 pm

Nonstop1h 35m

$233

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 12/25

2:30 pm-4:00 pm

Nonstop1h 30m

Toronto Island

Sat 1/3

3:45 pm-5:14 pm

Nonstop1h 29m

$238

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Thu 12/11

9:00 am-10:29 am

Nonstop1h 29m

Toronto Pearson Intl

Thu 12/11

2:00 pm-8:59 pm

1 stop6h 59m

$246

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 1/29

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 2/1

8:55 am-10:24 am

Nonstop1h 29m

$259

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sat 12/20

6:30 pm-8:00 pm

Nonstop1h 30m

Toronto Island

Sat 1/3

3:45 pm-5:14 pm

Nonstop1h 29m

$265

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Sun 11/23

6:00 am-5:17 pm

3 stops35h 17m

Hamilton

Sun 11/30

6:10 pm-11:03 pm

3 stops28h 53m

$1,711

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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 February instead. Flights to Region of Ontario in February, while not as cheap as those in June, still average around $240.

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 $349. 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 Tuesday will generally be more expensive and average around $550. 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 $317. 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 $709.

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 $330 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 $250 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	$134
Fastest flight time	1h 18m
Direct flights	Every day
Airports in Region of Ontario	2 airports

The best one-way flight to Region of Ontario from Washington, D.C. Dulles Intl Airport in the past 72 hours is $134. 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 $231.

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 2 airports near Region of Ontario: 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 November 2025, there are 5 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 29.75% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 25.73%, Embraer 175 at 17.06%, and Canadair (Bombardier) Regional Jet 900 at 7.07%.

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 8.0 384 reviews	Search Porter Airlines flights
Air Canada	PriceFrom $149	Free Cancellation	Rating 7.1 10,394 reviews	Search Air Canada flights
Air Transat	PriceFrom $176	Free Cancellation	Rating 7.8 470 reviews	Search Air Transat flights
United Airlines	PriceFrom $241	Free Cancellation	Rating 7.4 8,997 reviews	Search United Airlines flights
WestJet	PriceFrom $319	Free Cancellation	Rating 7.2 3,153 reviews	Search WestJet 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.

An easier way to manage your Region of Ontario trip

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Washington, D.C. Dulles Intl Airport flight routes

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Flights from Washington, D.C. Dulles Intl to Tweed-New Haven

Cheap flights from Washington, D.C. Dulles Intl Airport to Ontario from $101

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

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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

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

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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.

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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?

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?

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?

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.

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

Porter Airlines, Air Canada, and Air Transat are the most popular carriers operating 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?

The number of flights available between Washington, D.C. Dulles Intl Airport and Region of Ontario is 34 per day as of November 2025. The most frequent departure time is 5:00PM, with 62% of daily flights leaving in the afternoon.

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

As of November 2025, there are 240 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.

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

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

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?

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

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

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

Popular cities in Ontario

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