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 43% 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?

Air Canada, Porter Airlines, and Delta 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 2026, 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.

$109 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 week?

As of July 2026, there are 310 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.

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 44 per day as of July 2026. The most frequent departure time is 5:00PM, with 55% 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

Enter your travel dates to find the best prices.

5:15 pm - 6:46 pm

IAD

YTZ

1h 31mnonstop

3:15 pm - 4:38 pm

YTZ

IAD

1h 23mnonstop

$233Air Canada

Thu, Aug 20 - Sat, Aug 29

5:15 pm - 6:46 pm

IAD

YTZ

1h 31mnonstop

3:15 pm - 4:38 pm

YTZ

IAD

1h 23mnonstop

$236Air Canada

Sat, Jul 18 - Thu, Jul 23

5:15 pm - 6:46 pm

IAD

YTZ

1h 31mnonstop

1:40 pm - 3:10 pm

YTZ

IAD

1h 30mnonstop

$237Multiple Airlines

Thu, Aug 13 - Mon, Aug 17

3:55 pm - 5:25 pm

IAD

YTZ

1h 30mnonstop

1:40 pm - 3:11 pm

YTZ

IAD

1h 31mnonstop

$239Porter Airlines

Thu, Jul 23 - Mon, Jul 27

11:25 am - 12:55 pm

IAD

YTZ

1h 30mnonstop

1:40 pm - 3:10 pm

YTZ

IAD

1h 30mnonstop

$243Porter Airlines

Sun, Aug 2 - Fri, Aug 7

9:45 am - 2:21 pm

IAD

YTZ

4h 36m

1 stop

3:15 pm - 4:38 pm

YTZ

IAD

1h 23mnonstop

$244Air Canada

Wed, Aug 12 - Sun, Aug 16

4:20 pm - 5:50 pm

IAD

YYZ

1h 30mnonstop

1:55 pm - 3:24 pm

YYZ

IAD

1h 29mnonstop

$244Air Canada

Sun, Jul 19 - Thu, Jul 23

3:55 pm - 5:25 pm

IAD

YTZ

1h 30mnonstop

1:40 pm - 3:11 pm

YTZ

IAD

1h 31mnonstop

$245Porter Airlines

Thu, Jul 23 - Mon, Jul 27

5:40 pm - 2:57 pm

IAD

YOW

21h 17m

1 stop

10:40 am - 3:11 pm

YOW

IAD

4h 31m

1 stop

$333Multiple Airlines

Sun, Jul 19 - Wed, Jul 22

7:00 pm - 5:20 am

IAD

YXU

10h 20m

1 stop

8:40 pm - 6:10 pm

YXU

IAD

21h 30m

1 stop

$616WestJet

Mon, Aug 17 - Thu, Aug 20

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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

Air Canada

Aug 13

IAD4:20 pmWashington, D.C. Dulles Intl

1h 30m

YYZ5:50 pmToronto Pearson Intl

Aug 20

YYZ1:55 pmToronto Pearson Intl

1h 29m

IAD3:24 pmWashington, D.C. Dulles Intl

$232

Air Canada

Aug 20

IAD5:15 pmWashington, D.C. Dulles Intl

1h 31m

YTZ6:46 pmToronto Island

Aug 29

YTZ3:15 pmToronto Island

1h 23m

IAD4:38 pmWashington, D.C. Dulles Intl

$233

Air Canada

Jul 18

IAD5:15 pmWashington, D.C. Dulles Intl

1h 31m

YTZ6:46 pmToronto Island

Jul 23

YTZ3:15 pmToronto Island

1h 23m

IAD4:38 pmWashington, D.C. Dulles Intl

$236

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

Jul 14

IAD8:25 amWashington, D.C. Dulles Intl

1h 39m

YYZ10:04 amToronto Pearson Intl

Jul 18

YYZ2:35 pmToronto Pearson Intl

1h 43m

IAD4:18 pmWashington, D.C. Dulles Intl

$384

United Airlines

Jul 14

IAD6:10 amWashington, D.C. Dulles Intl

5h 39m

1 stop

YYZ11:49 amToronto Pearson Intl

Jul 24

YYZ9:35 amToronto Pearson Intl

1h 36m

IAD11:11 amWashington, D.C. Dulles Intl

$394

United Airlines

Jul 17

IAD10:14 pmWashington, D.C. Dulles Intl

1h 40m

YYZ11:54 pmToronto Pearson Intl

Jul 22

YYZ7:00 amToronto Pearson Intl

4h 52m

1 stop

IAD11:52 amWashington, D.C. Dulles Intl

$400

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 8/20

5:15 pm-6:46 pm

Nonstop1h 31m

Toronto Island

Sat 8/29

3:15 pm-4:38 pm

Nonstop1h 23m

$233

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sat 7/18

5:15 pm-6:46 pm

Nonstop1h 31m

Toronto Island

Thu 7/23

3:15 pm-4:38 pm

Nonstop1h 23m

$236

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 8/13

5:15 pm-6:46 pm

Nonstop1h 31m

Toronto Island

Mon 8/17

1:40 pm-3:10 pm

Nonstop1h 30m

$237

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 7/23

3:55 pm-5:25 pm

Nonstop1h 30m

Toronto Island

Mon 7/27

1:40 pm-3:11 pm

Nonstop1h 31m

$239

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sun 8/2

11:25 am-12:55 pm

Nonstop1h 30m

Toronto Island

Fri 8/7

1:40 pm-3:10 pm

Nonstop1h 30m

$243

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 8/12

9:45 am-2:21 pm

1 stop4h 36m

Toronto Island

Sun 8/16

3:15 pm-4:38 pm

Nonstop1h 23m

$244

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sun 7/19

4:20 pm-5:50 pm

Nonstop1h 30m

Toronto Pearson Intl

Thu 7/23

1:55 pm-3:24 pm

Nonstop1h 29m

$244

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 7/23

3:55 pm-5:25 pm

Nonstop1h 30m

Toronto Island

Mon 7/27

1:40 pm-3:11 pm

Nonstop1h 31m

$245

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 7/19

5:40 pm-2:57 pm

1 stop21h 17m

Ottawa

Wed 7/22

10:40 am-3:11 pm

1 stop4h 31m

$333

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 8/17

7:00 pm-5:20 am

1 stop10h 20m

London

Thu 8/20

8:40 pm-6:10 pm

1 stop21h 30m

$616

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 September is, on average, the cheapest month to fly to Region of Ontario from Washington, D.C. Dulles Intl Airport, with most prices found around $54. If you aren’t able to travel during the month of September, then book flights to Region of Ontario from Washington, D.C. Dulles Intl Airport during May instead. Flights to Region of Ontario in May, while not as cheap as those in September, still average around $87.

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

According to our data, Thursday is the cheapest day to fly to Region of Ontario from Washington, D.C. Dulles Intl Airport. The lowest ticket price found for a Thursday departure recently was $352. 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 $483. 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 $370. 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 $426.

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

Fly from Washington, D.C. Dulles Intl to Ottawa for the best Washington, D.C. Dulles Intl - Ontario flight prices

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to 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 $371 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 $288 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport to Region of 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	$125
Fastest flight time	1h 25m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The best one-way flight to Region of Ontario from Washington, D.C. Dulles Intl Airport in the past 72 hours is $125. 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 $242.

The fastest flight from Washington, D.C. Dulles Intl Airport to Region of Ontario takes 1h 25m

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

There are 125 airports in Region of Ontario. From Washington, D.C. Dulles Intl Airport there are direct flights to Toronto Pearson Intl (YYZ), Toronto Island (YTZ).

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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Ontario

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 2026, 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 38.91% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 17.88%, Embraer 175 at 16.26%, and Canadair (Bombardier) Regional Jet 900 at 6.10%.

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 7.9 442 reviews	Search Porter Airlines flights
Delta	PriceFrom $106	Free Cancellation	Rating 7.8 8,454 reviews	Search Delta flights
Air Canada	PriceFrom $182	Free Cancellation	Rating 7.1 11,295 reviews	Search Air Canada flights
Air Transat	PriceFrom $211	Free Cancellation	Rating 7.8 562 reviews	Search Air Transat flights
United Airlines	PriceFrom $230	Free Cancellation	Rating 7.4 9,931 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 $168

Flights to Vancouverfrom $130

Flights to Montrealfrom $223

Flights to Calgaryfrom $157

Flights to Ottawafrom $229

Flights to Halifaxfrom $259

Flights to Winnipegfrom $302

Flights to Québec Cityfrom $331

Flights to Kelownafrom $275

Flights to Saskatoonfrom $287

Flights to St. John'sfrom $361

Flights to Reginafrom $318

Cheap flights from Washington, D.C. Dulles Intl Airport to Ontario from $109

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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 from Washington, D.C. Dulles Intl Airport to Ontario?

What cabin class options are available on Washington, D.C. Dulles Intl Airport to Region of 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

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to 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

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