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 47% 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 Transat, and United Airlines 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 March 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.

$111 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 March 2026, there are 275 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 16% 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

9:25 am - 10:54 am

YTZ

IAD

1h 29mnonstop

$208Porter Airlines

Thu, Apr 23 - Mon, Apr 27

11:30 am - 1:00 pm

IAD

YTZ

1h 30mnonstop

1:45 pm - 3:16 pm

YTZ

IAD

1h 31mnonstop

$209Porter Airlines

Sat, May 30 - Thu, Jun 18

11:40 am - 1:10 pm

IAD

YTZ

1h 30mnonstop

9:25 am - 10:54 am

YTZ

IAD

1h 29mnonstop

$210Porter Airlines

Tue, Apr 14 - Tue, Apr 21

11:40 am - 1:10 pm

IAD

YTZ

1h 30mnonstop

9:25 am - 10:54 am

YTZ

IAD

1h 29mnonstop

$211Porter Airlines

Thu, Apr 23 - Mon, Apr 27

4:05 pm - 5:35 pm

IAD

YTZ

1h 30mnonstop

9:15 am - 10:46 am

YTZ

IAD

1h 31mnonstop

$212Porter Airlines

Wed, Jun 17 - Sun, Jun 21

4:05 pm - 5:30 pm

IAD

YYZ

1h 25mnonstop

1:55 pm - 3:29 pm

YYZ

IAD

1h 34mnonstop

$227Air Canada

Tue, May 12 - Tue, May 19

9:55 am - 11:22 am

IAD

YYZ

1h 27mnonstop

1:55 pm - 3:29 pm

YYZ

IAD

1h 34mnonstop

$228Air Canada

Wed, May 13 - Wed, May 20

11:40 am - 5:45 pm

IAD

YUL

6h 05m

1 stop

5:00 pm - 6:58 pm

YUL

IAD

1h 58mnonstop

$253Multiple Airlines

Mon, Apr 27 - Mon, May 4

11:40 am - 4:30 pm

IAD

YUL

4h 50m

1 stop

9:10 am - 3:29 pm

YUL

IAD

6h 19m

1 stop

$256Multiple Airlines

Mon, Apr 27 - Mon, May 4

4:05 pm - 9:38 pm

IAD

YXU

5h 33m

1 stop

9:30 am - 3:29 pm

YXU

IAD

5h 59m

1 stop

$701United Airlines

Mon, May 11 - Mon, May 18

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 25

IAD8:20 amWashington, D.C. Dulles Intl

8h 36m

1 stop

YYZ4:56 pmToronto Pearson Intl

Apr 25

YYZ7:43 pmToronto Pearson Intl

1h 42m

IAD9:25 pmWashington, D.C. Dulles Intl

$263

United Airlines

Apr 19

IAD8:20 amWashington, D.C. Dulles Intl

1h 44m

YYZ10:04 amToronto Pearson Intl

Apr 19

YYZ1:00 pmToronto Pearson Intl

11h 32m

1 stop

IAD12:32 amWashington, D.C. Dulles Intl

$269

United Airlines

Apr 26

IAD8:20 amWashington, D.C. Dulles Intl

1h 44m

YYZ10:04 amToronto Pearson Intl

Jun 11

YYZ7:43 pmToronto Pearson Intl

1h 43m

IAD9:26 pmWashington, D.C. Dulles Intl

$278

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

Apr 16

IAD6:15 amWashington, D.C. Dulles Intl

5h 34m

1 stop

YYZ11:49 amToronto Pearson Intl

Apr 20

YYZ12:45 pmToronto Pearson Intl

1h 39m

IAD2:24 pmWashington, D.C. Dulles Intl

$290

Lufthansa

May 7

IAD8:19 amWashington, D.C. Dulles Intl

1h 45m

YYZ10:04 amToronto Pearson Intl

May 10

YYZ9:35 amToronto Pearson Intl

1h 39m

IAD11:14 amWashington, D.C. Dulles Intl

$298

Lufthansa

May 7

IAD8:20 amWashington, D.C. Dulles Intl

7h 26m

1 stop

YYZ3:46 pmToronto Pearson Intl

May 10

YYZ9:35 amToronto Pearson Intl

1h 39m

IAD11:14 amWashington, D.C. Dulles Intl

$307

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 4/23

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Mon 4/27

9:25 am-10:54 am

Nonstop1h 29m

$208

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sat 5/30

11:30 am-1:00 pm

Nonstop1h 30m

Toronto Island

Thu 6/18

1:45 pm-3:16 pm

Nonstop1h 31m

$209

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Tue 4/14

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Tue 4/21

9:25 am-10:54 am

Nonstop1h 29m

$210

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 4/23

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Mon 4/27

9:25 am-10:54 am

Nonstop1h 29m

$211

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 6/17

4:05 pm-5:35 pm

Nonstop1h 30m

Toronto Island

Sun 6/21

9:15 am-10:46 am

Nonstop1h 31m

$212

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Tue 5/12

4:05 pm-5:30 pm

Nonstop1h 25m

Toronto Pearson Intl

Tue 5/19

1:55 pm-3:29 pm

Nonstop1h 34m

$227

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 5/13

9:55 am-11:22 am

Nonstop1h 27m

Toronto Pearson Intl

Wed 5/20

1:55 pm-3:29 pm

Nonstop1h 34m

$228

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Mon 4/27

11:40 am-5:45 pm

1 stop6h 05m

Montreal Pierre Elliott Trudeau Intl

Mon 5/4

5:00 pm-6:58 pm

Nonstop1h 58m

$253

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Mon 4/27

11:40 am-4:30 pm

1 stop4h 50m

Montreal Pierre Elliott Trudeau Intl

Mon 5/4

9:10 am-3:29 pm

1 stop6h 19m

$256

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 5/11

4:05 pm-9:38 pm

1 stop5h 33m

London

Mon 5/18

9:30 am-3:29 pm

1 stop5h 59m

$701

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 $232. 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, 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 $342. 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 Saturday will generally be more expensive and average around $462. 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 $342. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $452.

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 $343 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 $266 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	$112
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 $112. 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 $257.

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 March 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 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 $54	Free Cancellation	Rating 8.0 430 reviews	Search Porter Airlines flights
Delta	PriceFrom $138	Free Cancellation	Rating 7.9 8,366 reviews	Search Delta flights
Air Transat	PriceFrom $176	Free Cancellation	Rating 7.7 530 reviews	Search Air Transat flights
Air Canada	PriceFrom $196	Free Cancellation	Rating 7.1 10,872 reviews	Search Air Canada flights
United Airlines	PriceFrom $204	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?

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 $151

Flights to Vancouverfrom $148

Flights to Montrealfrom $209

Flights to Calgaryfrom $212

Flights to Ottawafrom $254

Flights to Halifaxfrom $281

Flights to Winnipegfrom $269

Flights to Québec Cityfrom $282

Flights to Kelownafrom $244

Flights to Saskatoonfrom $280

Flights to St. John'sfrom $394

Flights to Reginafrom $261

Cheap flights from Washington, D.C. Dulles Intl Airport to Ontario from $111

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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

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?

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?

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

According to popular flight searches on momondo this year

Region of Ontario flight routes

According to popular flight searches on momondo this year

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