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

Porter Airlines, Air Transat, and Air Canada are the most popular carriers operating from Ontario to Washington, D.C. Dulles Intl

What airlines fly to Washington, D.C. Dulles Intl Airport?

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Region of Ontario according to our data. Air Canada is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Washington, D.C. Dulles Intl Airport?

Flight times from Region of Ontario to Washington, D.C. Dulles Intl Airport vary, but if you’re flying out of Toronto and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 1h 30m on average. Another popular route from Region of Ontario to Washington, D.C. Dulles Intl Airport is flying from Ottawa to Washington, D.C. Dulles Intl Airport, which will take roughly 1h 43m. Keep in mind that layovers or delays could extend your travel time.

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

Prices for flights from Ontario to Washington, D.C. Dulles Intl Airport were last updated today.

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

The number of operators available for flights from Ontario to Washington, D.C. Dulles Intl Airport is 3 as of February 2026.

How old do you have to be to fly from Ontario to Washington, D.C. Dulles Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Washington, D.C. Dulles Intl Airport.

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$121 Cheap Flights from Region of Ontario to Washington, D.C. Dulles Intl Airport in 2026

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

As of February 2026, there are 187 flights per week flying from Region of Ontario to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Fri, with 17% of flights taking off on this day.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:55 am - 10:24 am

YTZ

IAD

1h 29mnonstop

11:40 am - 1:10 pm

IAD

YTZ

1h 30mnonstop

$198Porter Airlines

Mon, Mar 30 - Sun, Apr 5

9:25 am - 10:54 am

YTZ

IAD

1h 29mnonstop

11:40 am - 1:10 pm

IAD

YTZ

1h 30mnonstop

$199Porter Airlines

Thu, Apr 2 - Mon, Apr 6

1:00 pm - 9:18 pm

YYZ

IAD

8h 18m

1 stop

8:19 am - 10:04 am

IAD

YYZ

1h 45mnonstop

$200United Airlines

Tue, May 5 - Wed, May 6

8:55 am - 10:24 am

YTZ

IAD

1h 29mnonstop

6:30 pm - 8:00 pm

IAD

YTZ

1h 30mnonstop

$203Porter Airlines

Wed, Mar 18 - Sun, Mar 29

9:25 am - 10:54 am

YTZ

IAD

1h 29mnonstop

6:00 pm - 7:30 pm

IAD

YTZ

1h 30mnonstop

$205Porter Airlines

Thu, Apr 9 - Sun, Apr 12

2:05 pm - 3:39 pm

YYZ

IAD

1h 34mnonstop

4:30 pm - 5:57 pm

IAD

YYZ

1h 27mnonstop

$213Air Canada

Thu, Apr 9 - Sun, Apr 12

2:15 pm - 3:46 pm

YYZ

IAD

1h 31mnonstop

4:30 pm - 5:57 pm

IAD

YYZ

1h 27mnonstop

$215Air Canada

Fri, Mar 27 - Sun, Apr 5

7:43 pm - 9:25 pm

YYZ

IAD

1h 42mnonstop

6:15 am - 11:49 am

IAD

YYZ

5h 34m

1 stop

$219United Airlines

Sun, Apr 12 - Mon, Apr 13

6:45 pm - 12:27 am

YUL

IAD

5h 42m

1 stop

6:00 am - 11:59 am

IAD

YUL

5h 59m

1 stop

$271Delta

Thu, Mar 19 - Mon, Mar 23

6:00 am - 10:18 am

YUL

IAD

4h 18m

1 stop

11:04 am - 6:51 pm

IAD

YUL

7h 47m

2 stops

$277Delta

Tue, Apr 14 - Tue, Apr 21

Lufthansa flights from Region of Ontario to Washington, D.C. Dulles Intl Airport

Our best Lufthansa deals on Region of Ontario to Washington, D.C. Dulles Intl Airport flight tickets

Lufthansa

Mar 5

YUL2:13 pmMontreal Pierre Elliott Trudeau Intl

2h 08m

IAD4:21 pmWashington, D.C. Dulles Intl

Mar 8

IAD1:13 pmWashington, D.C. Dulles Intl

2h 03m

YUL3:16 pmMontreal Pierre Elliott Trudeau Intl

$451

Lufthansa

Mar 6

YUL9:15 amMontreal Pierre Elliott Trudeau Intl

2h 14m

IAD11:29 amWashington, D.C. Dulles Intl

Mar 10

IAD5:46 pmWashington, D.C. Dulles Intl

2h 02m

YUL7:48 pmMontreal Pierre Elliott Trudeau Intl

$474

Porter Airlines flights from Region of Ontario to Washington, D.C. Dulles Intl Airport

Our best Porter Airlines deals on Region of Ontario to Washington, D.C. Dulles Intl Airport flight tickets

Porter Airlines

Mar 30

YTZ8:55 amToronto Island

1h 29m

IAD10:24 amWashington, D.C. Dulles Intl

Apr 8

IAD11:40 amWashington, D.C. Dulles Intl

1h 30m

YTZ1:10 pmToronto Island

$198

Porter Airlines

Apr 2

YTZ9:25 amToronto Island

1h 29m

IAD10:54 amWashington, D.C. Dulles Intl

Apr 6

IAD11:40 amWashington, D.C. Dulles Intl

1h 30m

YTZ1:10 pmToronto Island

$199

Porter Airlines

Mar 18

YTZ8:55 amToronto Island

1h 29m

IAD10:24 amWashington, D.C. Dulles Intl

Mar 29

IAD6:30 pmWashington, D.C. Dulles Intl

1h 30m

YTZ8:00 pmToronto Island

$203

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 3/30

8:55 am-10:24 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 4/5

11:40 am-1:10 pm

Nonstop1h 30m

$198

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 4/2

9:25 am-10:54 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 4/6

11:40 am-1:10 pm

Nonstop1h 30m

$199

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 5/5

1:00 pm-9:18 pm

1 stop8h 18m

Washington, D.C. Dulles Intl

Wed 5/6

8:19 am-10:04 am

Nonstop1h 45m

$200

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 3/18

8:55 am-10:24 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 3/29

6:30 pm-8:00 pm

Nonstop1h 30m

$203

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 4/9

9:25 am-10:54 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 4/12

6:00 pm-7:30 pm

Nonstop1h 30m

$205

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 4/9

2:05 pm-3:39 pm

Nonstop1h 34m

Washington, D.C. Dulles Intl

Sun 4/12

4:30 pm-5:57 pm

Nonstop1h 27m

$213

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 3/27

2:15 pm-3:46 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 4/5

4:30 pm-5:57 pm

Nonstop1h 27m

$215

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sun 4/12

7:43 pm-9:25 pm

Nonstop1h 42m

Washington, D.C. Dulles Intl

Mon 4/13

6:15 am-11:49 am

1 stop5h 34m

$219

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 3/19

6:45 pm-12:27 am

1 stop5h 42m

Washington, D.C. Dulles Intl

Mon 3/23

6:00 am-11:59 am

1 stop5h 59m

$271

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 4/14

6:00 am-10:18 am

1 stop4h 18m

Washington, D.C. Dulles Intl

Tue 4/21

11:04 am-6:51 pm

2 stops7h 47m

$277

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 Region of Ontario to Washington, D.C. Dulles Intl Airport

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 Washington, D.C. Dulles Intl Airport?

In general, July is the cheapest month to fly from Region of Ontario to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $195. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of July, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $207.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $295. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to Washington, D.C. Dulles Intl Airport for around $531.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Region of Ontario in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $297 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $461 on average. Flights to Washington, D.C. Dulles Intl Airport from Region of Ontario in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $293 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Region of Ontario for as low as $242 on momondo.

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

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

You could potentially save up to 15% on your flight if you consider stops on a Region of Ontario to Washington, D.C. Dulles Intl Airport flight.

Cheap Region of Ontario to Washington, D.C. Dulles Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Washington, D.C. Dulles Intl Airport

Best Price Found	$136
Fastest flight time	1h 29m
Direct flights	Every day

The best one-way flight to Washington, D.C. Dulles Intl Airport from Region of Ontario in the past 72 hours is $136. The best round-trip flight deal from Region of Ontario to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $201.

The fastest flight from Region of Ontario to Washington, D.C. Dulles Intl Airport takes 1h 29m

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

Search flight deals

When did momondo last update prices for flights from Ontario to Washington, D.C. Dulles Intl Airport?
Prices for flights from Ontario to Washington, D.C. Dulles Intl Airport were last updated today.
How many operators does momondo search for flights from Ontario to Washington, D.C. Dulles Intl Airport?
The number of operators available for flights from Ontario to Washington, D.C. Dulles Intl Airport is 3 as of February 2026.
How old do you have to be to fly from Ontario to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Region of Ontario to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Region of Ontario to Washington, D.C. Dulles Intl Airport is Embraer 175 (Enhanced Winglets) (21.03% of total bookings). The next most popular plane models are De Havilland (Bombardier) DHC-8-400 Dash 8Q (20.15%), Embraer 195 E2 (9.22%), and Canadair (Bombardier) Regional Jet 900 (8.93%).

Best airlines flying from Region of Ontario to Washington, D.C. Dulles Intl Airport

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $146	Free Cancellation	Rating 7.4 9,362 reviews	Search United Airlines flights
Air Canada	PriceFrom $171	Free Cancellation	Rating 7.1 10,757 reviews	Search Air Canada flights
Porter Airlines	PriceFrom $174	Free Cancellation	Rating 8.0 420 reviews	Search Porter Airlines flights

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Waldorf

Woodbridge

Colonial Beach

Laurel

Towson

Silver Spring

Gaithersburg

Tysons

Fredericksburg

Rockville

Manassas

Springfield

Fairfax

Bethesda

Sterling

Why use momondo?

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

Finding the right flight to Washington, D.C. from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Washington, D.C. from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

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 Washington, D.C. from Ontario.

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

Yes. momondo can track prices for Ontario to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Washington, D.C. Dulles Intl Airport 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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Mon 3/30

Mon 4/6

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.

Popular cities

Other flights from Ontario

Other flights to Washington, D.C.

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in the United States

Flights to New York John F Kennedy Intl Airportfrom $56

Flights to Newark Airportfrom $57

Flights to New York LaGuardia Airportfrom $56

Flights to Chicago O'Hare Intl Airportfrom $53

Flights to Dallas/Fort Worth Airportfrom $54

Flights to Washington, D.C. Reagan-National Airportfrom $79

Flights to Orlando Airportfrom $56

Flights to Chicago Midway Airportfrom $55

Flights to Dallas Love Field Airport

Flights to Chicago Greater Rockford Airport

Cheap flights from Ontario to Washington, D.C. from $121

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Washington, D.C. departing on 4/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Lufthansa flights from Region of Ontario to Washington, D.C. Dulles Intl Airport

Our best Lufthansa deals on Region of Ontario to Washington, D.C. Dulles Intl Airport flight tickets

Porter Airlines flights from Region of Ontario to Washington, D.C. Dulles Intl Airport

Our best Porter Airlines deals on Region of Ontario to Washington, D.C. Dulles Intl Airport flight tickets

momondo Fare Finder

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

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Region of Ontario to Washington, D.C. Dulles Intl Airport

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

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

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

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

Can stopping save me money on Region of Ontario to Washington, D.C. Dulles Intl Airport flights?

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

What airlines fly to Washington, D.C. Dulles Intl Airport?

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

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

How long does it take to fly to Washington, D.C. Dulles Intl Airport?

Cheap Region of Ontario to Washington, D.C. Dulles Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Washington, D.C. Dulles Intl Airport

Best Price Found

Fastest flight time

Direct flights

Best airlines flying from Region of Ontario to Washington, D.C. Dulles Intl Airport

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

Traveling to a place near Washington, D.C.?

Why use momondo?

An easier way to manage your Washington, D.C. Dulles Intl Airport 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 Washington, D.C.

Popular cities in the United States

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

Region of Ontario flight routes

According to popular flight searches on momondo this year

Washington, D.C. Dulles Intl Airport flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

Complete your trip to Washington, D.C.

Explore popular destinations other users love

According to popular flight searches on momondo this year