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 53% 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.

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

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

As of July 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.

$74 Cheap Flights from Washington, D.C. Dulles Intl Airport to Region of Ontario in 2025

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

As of July 2025, there are 221 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 Thu, with 18% of flights taking off on this day.

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 31 per day as of July 2025. The most frequent departure time is 5:00PM, with 68% of daily flights leaving in the afternoon.

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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

4:20 pm - 5:53 pmIAD-YTZ

1h 33mnonstop

8:45 am - 10:16 amYTZ-IAD

1h 31mnonstop

$173Porter Airlines

Find Deal

Thu, Sep 4 - Sun, Sep 7

11:35 am - 1:08 pmIAD-YTZ

1h 33mnonstop

8:45 am - 10:16 amYTZ-IAD

1h 31mnonstop

$175Porter Airlines

Find Deal

Thu, Sep 4 - Sun, Sep 7

4:20 pm - 5:53 pmIAD-YTZ

1h 33mnonstop

8:45 am - 10:16 amYTZ-IAD

1h 31mnonstop

$202

Find Deal

Thu, Sep 4 - Sun, Sep 7

9:35 am - 4:46 pmIAD-YTZ

7h 11m1 stop

1:25 pm - 2:56 pmYTZ-IAD

1h 31mnonstop

$206

Find Deal

Mon, Aug 25 - Thu, Aug 28

2:25 pm - 3:57 pmIAD-YYZ

1h 32mnonstop

12:10 pm - 1:38 pmYYZ-IAD

1h 28mnonstop

$217Air Canada

Find Deal

Wed, Sep 3 - Fri, Oct 24

10:20 am - 11:52 amIAD-YYZ

1h 32mnonstop

4:30 pm - 9:05 pmYYZ-IAD

4h 35m1 stop

$222Air Canada

Find Deal

Wed, Sep 3 - Fri, Oct 24

12:41 pm - 2:19 pmIAD-YYZ

1h 38mnonstop

6:00 pm - 10:39 pmYYZ-IAD

4h 39m1 stop

$254United Airlines

Find Deal

Sun, Sep 21 - Sun, Sep 21

8:28 am - 10:04 amIAD-YYZ

1h 36mnonstop

7:47 pm - 9:25 pmYYZ-IAD

1h 38mnonstop

$262United Airlines

Find Deal

Tue, Aug 26 - Fri, Aug 29

6:45 pm - 12:40 amIAD-YHM

29h 55m1 stop

6:00 am - 5:50 pmYHM-IAD

11h 50m1 stop

$468WestJet

Find Deal

Fri, Sep 19 - Mon, Sep 22

6:45 pm - 12:40 amIAD-YHM

29h 55m1 stop

6:00 am - 5:50 pmYHM-IAD

11h 50m1 stop

$469WestJet

Find Deal

Fri, Sep 19 - Mon, Sep 22

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

Sep 3

IAD2:25 pmWashington, D.C. Dulles Intl

1h 32m

YYZ3:57 pmToronto Pearson Intl

Oct 24

YYZ12:10 pmToronto Pearson Intl

1h 28m

IAD1:38 pmWashington, D.C. Dulles Intl

$217

Find similar

Air Canada

Sep 3

IAD10:20 amWashington, D.C. Dulles Intl

1h 32m

YYZ11:52 amToronto Pearson Intl

Oct 24

YYZ4:30 pmToronto Pearson Intl

4h 35m

1 stop

IAD9:05 pmWashington, D.C. Dulles Intl

$222

Find similar

Air Canada

Sep 15

IAD10:20 amWashington, D.C. Dulles Intl

1h 32m

YYZ11:52 amToronto Pearson Intl

Sep 25

YYZ8:10 amToronto Pearson Intl

1h 28m

IAD9:38 amWashington, D.C. Dulles Intl

$223

Find similar

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

Sep 3

IAD6:00 amWashington, D.C. Dulles Intl

7h 32m

1 stop

YYZ1:32 pmToronto Pearson Intl

Oct 22

YYZ3:35 pmToronto Pearson Intl

7h 26m

1 stop

IAD11:01 pmWashington, D.C. Dulles Intl

$242

Find similar

Delta

Aug 27

IAD6:00 amWashington, D.C. Dulles Intl

7h 32m

1 stop

YYZ1:32 pmToronto Pearson Intl

Sep 3

YYZ6:13 pmToronto Pearson Intl

5h 13m

1 stop

IAD11:26 pmWashington, D.C. Dulles Intl

$256

Find similar

Delta

Sep 17

IAD6:00 amWashington, D.C. Dulles Intl

5h 20m

1 stop

YYZ11:20 amToronto Pearson Intl

Sep 23

YYZ6:13 pmToronto Pearson Intl

4h 53m

1 stop

IAD11:06 pmWashington, D.C. Dulles Intl

$287

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 9/4

4:20 pm-5:53 pm

Nonstop1h 33m

Toronto Island

Sun 9/7

8:45 am-10:16 am

Nonstop1h 31m

$173

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 9/4

11:35 am-1:08 pm

Nonstop1h 33m

Toronto Island

Sun 9/7

8:45 am-10:16 am

Nonstop1h 31m

$175

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 9/4

4:20 pm-5:53 pm

Nonstop1h 33m

Toronto Island

Sun 9/7

8:45 am-10:16 am

Nonstop1h 31m

$202

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 8/25

9:35 am-4:46 pm

1 stop7h 11m

Toronto Island

Thu 8/28

1:25 pm-2:56 pm

Nonstop1h 31m

$206

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 9/3

2:25 pm-3:57 pm

Nonstop1h 32m

Toronto Pearson Intl

Fri 10/24

12:10 pm-1:38 pm

Nonstop1h 28m

$217

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 9/3

10:20 am-11:52 am

Nonstop1h 32m

Toronto Pearson Intl

Fri 10/24

4:30 pm-9:05 pm

1 stop4h 35m

$222

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sun 9/21

12:41 pm-2:19 pm

Nonstop1h 38m

Toronto Pearson Intl

Sun 9/21

6:00 pm-10:39 pm

1 stop4h 39m

$254

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Tue 8/26

8:28 am-10:04 am

Nonstop1h 36m

Toronto Pearson Intl

Fri 8/29

7:47 pm-9:25 pm

Nonstop1h 38m

$262

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Fri 9/19

6:45 pm-12:40 am

1 stop29h 55m

Hamilton

Mon 9/22

6:00 am-5:50 pm

1 stop11h 50m

$468

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Fri 9/19

6:45 pm-12:40 am

1 stop29h 55m

Hamilton

Mon 9/22

6:00 am-5:50 pm

1 stop11h 50m

$469

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 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 $350. 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 $558. 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 $321. 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 $679.

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 $328 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 $253 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	$74
Fastest flight time	1h 28m
Direct flights	Every day
Airports in Region of Ontario	3 airports

The best one-way flight to Region of Ontario from Washington, D.C. Dulles Intl Airport in the past 72 hours is $74. 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 $173.

The fastest flight from Washington, D.C. Dulles Intl Airport to Region of Ontario takes 1h 28m

Direct flights go from Washington, D.C. Dulles Intl Airport to Region of Ontario every day.

There are 3 airports near Region of Ontario: Montreal Pierre Elliott Trudeau Intl (YUL), 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 July 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 26.50% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 24.69%, Embraer 175 at 14.63%, and Embraer 170 at 8.91%.

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 $109	Free Cancellation	Rating 8.0 318 reviews	Search Porter Airlines flights
Air Canada	PriceFrom $136	Free Cancellation	Rating 7.1 9,851 reviews	Search Air Canada flights
Air Transat	PriceFrom $176	Free Cancellation	Rating 7.7 424 reviews	Search Air Transat flights
United Airlines	PriceFrom $238	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
WestJet	PriceFrom $278	Free Cancellation	Rating 7.2 2,978 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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Popular cities in Ontario

Flights to Torontofrom $98

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Flights to Montrealfrom $155

Flights to Calgaryfrom $145

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Flights to Saskatoonfrom $120

Flights to Kelownafrom $202

Flights to St. John'sfrom $263

Flights to Reginafrom $219

Washington, D.C. Dulles Intl Airport flight routes

Washington, D.C. Dulles Intl to Savannah/Hilton Head

Washington, D.C. Dulles Intl to Wilmington New Hanover County

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

Washington, D.C. Dulles Intl to South Bend/Michiana

Washington, D.C. Dulles Intl to Nashville Intl

Washington, D.C. Dulles Intl to Asheville Regional

Cheap flights from Washington, D.C. Dulles Intl Airport to Ontario from $74

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

Cheap round-trip flights

Cheap one-way flights

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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

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

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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

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 31 per day as of July 2025. The most frequent departure time is 5:00PM, with 68% 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 July 2025, there are 221 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 Thu, with 18% 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