What is the cheapest airline that flies from Washington, D.C. Reagan-National to Ontario?

Air Canada, Delta, and United Airlines are the most popular carriers operating from Washington, D.C. Reagan-National to Ontario

What airlines fly to Region of Ontario?

Air Canada, American Airlines and United Airlines are the top three most popular airlines that fly to Region of Ontario from Washington, D.C. Reagan-National Airport according to our data. Air Canada is the first choice among our users, with 62% 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.

When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Ontario?

Prices for flights from Washington, D.C. Reagan-National Airport to Ontario are refreshed on a daily basis.

How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Ontario?

There are 4 operators available for flights from Washington, D.C. Reagan-National Airport to Ontario as of July 2026.

How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Ontario?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National 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.

$108 Cheap Flights from Washington, D.C. Reagan-National Airport to Region of Ontario in 2026

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

146 flights are operational weekly from Washington, D.C. Reagan-National Airport to Region of Ontario as of July 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

Q: How many flights depart from Washington, D.C. Reagan-National Airport to Region of Ontario on average per day?

As of July 2026, there are 20 flights per day flying from Washington, D.C. Reagan-National Airport to Region of Ontario. The most common time of day flights depart is 10:00AM, with 46% of flights taking off at noon.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Reagan-National Airport to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:40 pm - 5:08 pm

DCA

YYZ

4h 28m

1 stop

7:10 am - 12:00 pm

YYZ

DCA

4h 50m

1 stop

$212Air Canada

Mon, Aug 24 - Mon, Aug 31

12:40 pm - 5:08 pm

DCA

YYZ

4h 28m

1 stop

8:55 pm - 10:31 pm

YYZ

DCA

1h 36mnonstop

$213Air Canada

Sat, Aug 22 - Mon, Aug 24

6:59 am - 8:35 am

DCA

YYZ

1h 36mnonstop

7:10 am - 12:00 pm

YYZ

DCA

4h 50m

1 stop

$214Air Canada

Wed, Aug 5 - Thu, Aug 6

6:00 am - 12:35 pm

DCA

YYZ

6h 35m

1 stop

7:10 am - 12:00 pm

YYZ

DCA

4h 50m

1 stop

$217Air Canada

Wed, Aug 5 - Thu, Aug 6

12:40 pm - 6:20 pm

DCA

YTZ

5h 40m

1 stop

8:20 am - 12:00 pm

YTZ

DCA

3h 40m

1 stop

$217Air Canada

Thu, Aug 20 - Sun, Aug 23

6:00 am - 3:08 pm

DCA

YHM

9h 08m

2 stops

6:35 pm - 10:18 am

YHM

DCA

15h 43m

2 stops

$559Multiple Airlines

Tue, Aug 25 - Tue, Sep 1

6:00 am - 3:08 pm

DCA

YHM

9h 08m

2 stops

6:35 pm - 10:18 am

YHM

DCA

15h 43m

2 stops

$562Multiple Airlines

Tue, Aug 25 - Tue, Sep 1

11:42 am - 6:28 pm

DCA

YQT

6h 46m

1 stop

6:30 am - 3:59 pm

YQT

DCA

9h 29m

1 stop

$640Porter Airlines

Thu, Aug 6 - Tue, Aug 18

11:56 am - 10:33 pm

DCA

YQT

10h 37m

1 stop

6:30 am - 12:44 pm

YQT

DCA

6h 14m

1 stop

$653Porter Airlines

Tue, Sep 29 - Sat, Oct 3

11:00 am - 2:50 pm

DCA

YXU

3h 50m

1 stop

6:20 pm - 10:31 pm

YXU

DCA

4h 11m

1 stop

$820United Airlines

Tue, Aug 25 - Tue, Sep 1

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Air Canada flights from Washington, D.C. Reagan-National Airport to Region of Ontario

Our best Air Canada deals on Washington, D.C. Reagan-National Airport to Region of Ontario flight tickets

Air Canada

Aug 24

DCA12:40 pmWashington, D.C. Reagan-National

4h 28m

1 stop

YYZ5:08 pmToronto Pearson Intl

Aug 31

YYZ7:10 amToronto Pearson Intl

4h 50m

1 stop

DCA12:00 pmWashington, D.C. Reagan-National

$212

Air Canada

Aug 22

DCA12:40 pmWashington, D.C. Reagan-National

4h 28m

1 stop

YYZ5:08 pmToronto Pearson Intl

Aug 24

YYZ8:55 pmToronto Pearson Intl

1h 36m

DCA10:31 pmWashington, D.C. Reagan-National

$213

Air Canada

Aug 5

DCA6:59 amWashington, D.C. Reagan-National

1h 36m

YYZ8:35 amToronto Pearson Intl

Aug 6

YYZ7:10 amToronto Pearson Intl

4h 50m

1 stop

DCA12:00 pmWashington, D.C. Reagan-National

$214

Delta flights from Washington, D.C. Reagan-National Airport to Region of Ontario

Our best Delta deals on Washington, D.C. Reagan-National Airport to Region of Ontario flight tickets

Delta

Aug 8

DCA6:25 pmWashington, D.C. Reagan-National

4h 34m

1 stop

YYZ10:59 pmToronto Pearson Intl

Aug 15

YYZ6:00 amToronto Pearson Intl

5h 16m

1 stop

DCA11:16 amWashington, D.C. Reagan-National

$270

Delta

Jul 25

DCA9:39 amWashington, D.C. Reagan-National

7h 45m

1 stop

YYZ5:24 pmToronto Pearson Intl

Aug 4

YYZ9:45 amToronto Pearson Intl

9h 00m

1 stop

DCA6:45 pmWashington, D.C. Reagan-National

$323

Delta

Jul 21

DCA6:00 amWashington, D.C. Reagan-National

7h 34m

1 stop

YYZ1:34 pmToronto Pearson Intl

Jul 22

YYZ5:05 pmToronto Pearson Intl

5h 53m

1 stop

DCA10:58 pmWashington, D.C. Reagan-National

$334

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Mon 8/24

12:40 pm-5:08 pm

1 stop4h 28m

Toronto Pearson Intl

Mon 8/31

7:10 am-12:00 pm

1 stop4h 50m

$212

Quickest round-trip

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Sat 8/22

12:40 pm-5:08 pm

1 stop4h 28m

Toronto Pearson Intl

Mon 8/24

8:55 pm-10:31 pm

Nonstop1h 36m

$213

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Wed 8/5

6:59 am-8:35 am

Nonstop1h 36m

Toronto Pearson Intl

Thu 8/6

7:10 am-12:00 pm

1 stop4h 50m

$214

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Wed 8/5

6:00 am-12:35 pm

1 stop6h 35m

Toronto Pearson Intl

Thu 8/6

7:10 am-12:00 pm

1 stop4h 50m

$217

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Thu 8/20

12:40 pm-6:20 pm

1 stop5h 40m

Toronto Island

Sun 8/23

8:20 am-12:00 pm

1 stop3h 40m

$217

Washington, D.C.Hamilton

DCA - YHM

DCAYHM

Washington, D.C. Reagan-National

Tue 8/25

6:00 am-3:08 pm

2 stops9h 08m

Hamilton

Tue 9/1

6:35 pm-10:18 am

2 stops15h 43m

$559

Washington, D.C.Hamilton

DCA - YHM

DCAYHM

Washington, D.C. Reagan-National

Tue 8/25

6:00 am-3:08 pm

2 stops9h 08m

Hamilton

Tue 9/1

6:35 pm-10:18 am

2 stops15h 43m

$562

Washington, D.C.Thunder Bay

DCA - YQT

DCAYQT

Washington, D.C. Reagan-National

Thu 8/6

11:42 am-6:28 pm

1 stop6h 46m

Thunder Bay

Tue 8/18

6:30 am-3:59 pm

1 stop9h 29m

$640

Washington, D.C.Thunder Bay

DCA - YQT

DCAYQT

Washington, D.C. Reagan-National

Tue 9/29

11:56 am-10:33 pm

1 stop10h 37m

Thunder Bay

Sat 10/3

6:30 am-12:44 pm

1 stop6h 14m

$653

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 8/25

11:00 am-2:50 pm

1 stop3h 50m

London

Tue 9/1

6:20 pm-10:31 pm

1 stop4h 11m

$820

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. Reagan-National 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. Reagan-National Airport, with most prices found around $93. If you aren’t able to travel during the month of September, then book flights to Region of Ontario from Washington, D.C. Reagan-National Airport during June instead. Flights to Region of Ontario in June, while not as cheap as those in September, still average around $96.

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. Reagan-National Airport. The lowest ticket price found for a Friday departure recently was $470. 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. Reagan-National Airport to Region of Ontario on a Monday will generally be more expensive and average around $748. 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 evening. momondo users have found flights departing from Washington, D.C. Reagan-National Airport to Region of Ontario in the evening for as low as $411. 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 afternoon are often more expensive with an average ticket price of $552.

What is the cheapest Washington, D.C. Reagan-National to Ontario flight route?

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

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Ontario?

You are more likely to see cheaper flights to Region of Ontario from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $363 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. Reagan-National Airport for as low as $292 on momondo.

What cabin class options are available on Washington, D.C. Reagan-National Airport to Region of Ontario flights?

There are 4 cabin classes available to choose from on Washington, D.C. Reagan-National 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. Reagan-National Airport to Region of Ontario flights?

You could potentially save up to 6% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Region of Ontario flight.

Cheap Washington, D.C. Reagan-National 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. Reagan-National Airport to Region of Ontario

Best Price Found	$192
Fastest flight time	1h 26m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The best one-way flight to Region of Ontario from Washington, D.C. Reagan-National Airport in the past 72 hours is $192. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to Region of Ontario found on momondo in the last 72 hours is $363.

The fastest flight from Washington, D.C. Reagan-National Airport to Region of Ontario takes 1h 26m

Direct flights go from Washington, D.C. Reagan-National Airport to Region of Ontario every day.

There are 125 airports in Region of Ontario. From Washington, D.C. Reagan-National Airport there are direct flights to Ottawa (YOW), Toronto Pearson Intl (YYZ).

Search flight deals

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Ontario

When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Ontario?
Prices for flights from Washington, D.C. Reagan-National Airport to Ontario are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Ontario?
There are 4 operators available for flights from Washington, D.C. Reagan-National Airport to Ontario as of July 2026.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Ontario?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National 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. Reagan-National Airport to Region of Ontario?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. Reagan-National Airport to Region of Ontario is De Havilland (Bombardier) DHC-8-400 Dash 8Q, representing 26.20% of all bookings. The subsequent popular models are Canadair (Bombardier) Regional Jet 900 at 13.01%, Embraer 175 (Enhanced Winglets) at 11.67%, and Embraer 175 at 10.07%.

Best airlines flying from Washington, D.C. Reagan-National Airport to Region of Ontario

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Region of Ontario with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $139	Free Cancellation	Rating 7.4 9,980 reviews	Search United Airlines flights
Porter Airlines	PriceFrom $187	Free Cancellation	Rating 7.9 442 reviews	Search Porter Airlines flights
Air Canada	PriceFrom $203	Free Cancellation	Rating 7.1 11,328 reviews	Search Air Canada flights
American Airlines	PriceFrom $271	Free Cancellation	Rating 7.1 11,804 reviews	Search American Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Ontario for you.

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

Yes. momondo enables you to select and highlight flights to Ontario from Washington, D.C. with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Washington, D.C..

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

Of course. momondo tracks the price of Washington, D.C. to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular cities in Ontario

Flights to Torontofrom $175

Flights to Vancouverfrom $122

Flights to Montrealfrom $215

Flights to Calgaryfrom $215

Flights to Ottawafrom $227

Flights to Halifaxfrom $254

Flights to Winnipegfrom $274

Flights to Québec Cityfrom $316

Flights to Kelownafrom $181

Flights to Saskatoonfrom $300

Flights to St. John'sfrom $386

Flights to Reginafrom $353

Cheap flights from Washington, D.C. Reagan-National Airport to Ontario from $108

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Air Canada flights from Washington, D.C. Reagan-National Airport to Region of Ontario

Our best Air Canada deals on Washington, D.C. Reagan-National Airport to Region of Ontario flight tickets

Delta flights from Washington, D.C. Reagan-National Airport to Region of Ontario

Our best Delta deals on Washington, D.C. Reagan-National Airport to Region of Ontario flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National 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. Reagan-National 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. Reagan-National to Ontario flight route?

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Ontario?

What cabin class options are available on Washington, D.C. Reagan-National Airport to Region of Ontario flights?

Can stopping save me money on Washington, D.C. Reagan-National Airport to Region of Ontario flights?

What is the cheapest airline that flies from Washington, D.C. Reagan-National to Ontario?

What airlines fly to Region of Ontario?

How many flights depart from Washington, D.C. Reagan-National Airport to Region of Ontario on average per day?

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

Cheap Washington, D.C. Reagan-National 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. Reagan-National 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. Reagan-National Airport to Ontario

Best airlines flying from Washington, D.C. Reagan-National Airport to Region of Ontario

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National 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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