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Cheap flights from Ontario to Washington, D.C. Dulles Intl Airport from C$ 84

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — IAD
25 Feb — 4 Mar1
1 adult

Cheap flight deals from Ontario to Dulles Intl

Keep the following information in mind while searching for Ontario to Dulles Intl flight deals. Data was last updated 20 February 2025.

Round-trip from

C$ 259

One-way from

C$ 84

Popular in

May

Cheapest in

March

Average price

C$ 366

Good round-trip deal

C$ 267 or less

Good one-way deal

C$ 176 or less
Porter Airlines
  • Porter Airlines
  • 13/3-17/3
  • Nonstop
  • 2h 59m total
  • Ontario to Washington, D.C.
Search Deals
Air Canada
  • Air Canada
  • 26/3
  • 1 total stop
  • 5h 36m total
  • Ontario to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Ontario to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Ontario to Washington, D.C. Dulles Intl.
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Find flight deals from Ontario to Dulles Intl

Cheapest flights from Ontario to Dulles Intl
Explore the most affordable flight options available from Ontario to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Sun 23/38:55 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 25/31:45 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 19/2C$ 264
Wed 19/38:55 p.m.YTZ - IAD
Nonstop1h 29mAir Transat
Wed 26/37:00 a.m.IAD - YTZ
Nonstop1h 30mAir Transat
Deal found 19/2C$ 273
Tue 1/46:15 a.m.YYZ - IAD
Nonstop1h 40mAir Canada
Tue 8/410:19 p.m.IAD - YYZ
Nonstop1h 35mAir Canada
Deal found 18/2C$ 274
Tue 1/47:25 a.m.YTZ - IAD
1 stop5h 47mAir Canada
Tue 8/43:55 p.m.IAD - YTZ
1 stop5h 40mAir Canada
Deal found 19/2C$ 280
Tue 4/37:40 p.m.YYZ - IAD
Nonstop1h 43mUnited Airlines
Wed 5/38:25 a.m.IAD - YYZ
1 stop4h 32mUnited Airlines
Deal found 20/2C$ 280
Tue 1/47:00 a.m.YYZ - IAD
1 stop8h 47mMultiple Airlines
Tue 8/44:32 p.m.IAD - YYZ
1 stop7h 29mMultiple Airlines
Deal found 19/2C$ 298
Thu 3/411:30 a.m.YTZ - IAD
Nonstop1h 29mMultiple Airlines
Sun 6/44:07 p.m.IAD - YTZ
1 stop5h 28mMultiple Airlines
Deal found 19/2C$ 328
Tue 8/46:00 a.m.YYZ - IAD
1 stop7h 22mDelta
Sat 19/46:00 a.m.IAD - YYZ
1 stop5h 25mDelta
Deal found 20/2C$ 337
Wed 2/41:15 p.m.YUL - IAD
Nonstop1h 58mAir Canada
Wed 9/48:17 a.m.IAD - YUL
1 stop3h 32mAir Canada
Deal found 19/2C$ 354
Fri 28/26:30 a.m.YYZ - IAD
1 stop17h 06mWestJet
Sat 1/312:29 p.m.IAD - YYZ
1 stop20h 48mWestJet
Deal found 19/2C$ 358
Wed 12/36:50 a.m.YUL - IAD
1 stop6h 09mPorter Airlines
Sun 16/37:00 a.m.IAD - YUL
1 stop4h 05mPorter Airlines
Deal found 19/2C$ 359
Tue 25/32:45 p.m.YOW - IAD
1 stop5h 56mAir Canada
Sat 5/48:17 a.m.IAD - YOW
Nonstop1h 41mAir Canada
Deal found 20/2C$ 368

Find flights from Ontario to Dulles Intl within your budget

Customize your flight search to find flights from Ontario to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 20 February 2025.

Fly from

Ontario

Fly to

Dulles Intl

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 23/3

8:55 p.m.-10:24 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 25/3

1:45 p.m.-3:15 p.m.

Nonstop1h 30m

C$ 264

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 19/3

8:55 p.m.-10:24 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Wed 26/3

7:00 a.m.-8:30 a.m.

Nonstop1h 30m

C$ 273

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 1/4

6:15 a.m.-7:55 a.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Tue 8/4

10:19 p.m.-11:54 p.m.

Nonstop1h 35m

C$ 274

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 4/3

7:40 p.m.-9:23 p.m.

Nonstop1h 43m

Washington, D.C. Dulles Intl

Wed 5/3

8:25 a.m.-12:57 p.m.

1 stop4h 32m

C$ 280

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 1/4

7:25 a.m.-1:12 p.m.

1 stop5h 47m

Washington, D.C. Dulles Intl

Tue 8/4

3:55 p.m.-9:35 p.m.

1 stop5h 40m

C$ 280

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 1/4

7:00 a.m.-3:47 p.m.

1 stop8h 47m

Washington, D.C. Dulles Intl

Tue 8/4

4:32 p.m.-12:01 a.m.

1 stop7h 29m

C$ 298

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 3/4

11:30 a.m.-12:59 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 6/4

4:07 p.m.-9:35 p.m.

1 stop5h 28m

C$ 328

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 8/4

6:00 a.m.-1:22 p.m.

1 stop7h 22m

Washington, D.C. Dulles Intl

Sat 19/4

6:00 a.m.-11:25 a.m.

1 stop5h 25m

C$ 337

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 2/4

1:15 p.m.-3:13 p.m.

Nonstop1h 58m

Washington, D.C. Dulles Intl

Wed 9/4

8:17 a.m.-11:49 a.m.

1 stop3h 32m

C$ 354

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 12/3

6:50 a.m.-12:59 p.m.

1 stop6h 09m

Washington, D.C. Dulles Intl

Sun 16/3

7:00 a.m.-11:05 a.m.

1 stop4h 05m

C$ 359

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/2

Showing 1-10 of 49 results
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Best time to book a flight from Ontario to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario to Dulles Intl

Get recent, data-driven insights about flights from Ontario to Dulles Intl including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Region of Ontario to Washington, D.C. Dulles Intl Airport?

Currently, February is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. Dulles Intl Airport (average of C$ 256). Flying from Region of Ontario to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of C$ 352). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ON to IAD?

Find hourly flight availability from Ontario to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 February 2025.

When flying from Region of Ontario to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Region of Ontario to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Ontario to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 20 February 2025.

The most flights from CAON to IAD are scheduled on a Wednesday (19 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (13 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 mm per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated 20 February 2025.
Read through reviews of airlines operating flights from Ontario to Washington, D.C., such as Delta, Porter Airlines and Air Transat. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Porter Airlines
7.9
Good
276 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Transat
7.8
Good
380 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,765 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Brussels Airlines
7.4
Good
341 reviews
Delta
8.0
Very good
8,219 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Ontario to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Region of Ontario to Washington, D.C. Dulles Intl Airport one-way?

    One-way options have recently been found by users for as low as C$ 84 on Air Canada. Other airlines that offer cheap prices include Porter Airlines from C$ 173 and Air Transat from C$ 175 one-way.

  • What are the most popular routes from Region of Ontario to Washington, D.C. Dulles Intl Airport?

    When deciding which route to take from Region of Ontario to Washington, D.C. Dulles Intl Airport consider Toronto Pearson Intl - Washington, D.C. Dulles Intl, Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl or Toronto Island - Washington, D.C. Dulles Intl as they are the most popular.

  • What are the most reliable airlines from Region of Ontario to Washington, D.C. Dulles Intl Airport?

    The top 3 most reliable airlines when flying from Region of Ontario to Washington, D.C. Dulles Intl Airport are ANA (88%), Republic Airways (83%) and Copa Airlines (78%).

  • What are the cheapest flights from Region of Ontario to Washington, D.C. Dulles Intl Airport?

    The cheapest flight price from Region of Ontario to Washington, D.C. Dulles Intl Airport is C$ 200. On average you can expect to pay C$ 1,276. The most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), can usually be booked for C$ 253.

  • Can I find deals for flights from Ontario to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Ontario to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Dulles Intl.

  • Can I find deals for business class flights from Ontario to Dulles Intl?

    Yes. Cheapflights offers flight deals from Ontario to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to Washington, D.C. Dulles Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. Dulles Intl Airport (average of C$ 256). Flying from Region of Ontario to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of C$ 352). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Herndon
Warrenton
Arlington
Hanover
Fairfax
Bel Air
Chantilly
Winchester
Falls Church
Manassas
Fredericksburg
Alexandria
Rockville

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Alternative routes for Ontario to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Dulles Intl flights
Pearson Intl to Reagan-National flights
Pierre Elliott Trudeau Intl to Dulles Intl flights
Toronto Island to Dulles Intl flights
Pierre Elliott Trudeau Intl to Reagan-National flights
Pearson Intl to Baltimore flights
Vancouver Intl to Dulles Intl flights
Vancouver Intl to Baltimore flights
Pierre Elliott Trudeau Intl to Baltimore flights
Vancouver Intl to Reagan-National flights
Calgary to Dulles Intl flights
Ottawa to Reagan-National flights
Ottawa to Dulles Intl flights
Calgary to Baltimore flights
Toronto Island to Baltimore flights
Calgary to Reagan-National flights
Edmonton to Dulles Intl flights
Edmonton to Baltimore flights
Ottawa to Baltimore flights
Toronto Island to Reagan-National flights
Edmonton to Reagan-National flights
Winnipeg to Dulles Intl flights
Halifax to Dulles Intl flights
Winnipeg to Reagan-National flights
Winnipeg to Baltimore flights
Halifax to Reagan-National flights
Québec City to Dulles Intl flights
Halifax to Baltimore flights
Québec City to Reagan-National flights
Saskatoon to Reagan-National flights
Québec City to Baltimore flights
Victoria to Dulles Intl flights
Kelowna to Dulles Intl flights
Saskatoon to Baltimore flights
Regina to Dulles Intl flights
St. John's to Reagan-National flights
Fredericton to Dulles Intl flights
St. John's to Baltimore flights
London to Dulles Intl flights
London to Reagan-National flights
St. John's to Dulles Intl flights
Regina to Baltimore flights
Regina to Reagan-National flights
London to Baltimore flights
Kamloops to Baltimore flights
Kamloops to Dulles Intl flights
Victoria to Reagan-National flights
Fort McMurray to Reagan-National flights
Hamilton to Reagan-National flights

Top 5 airlines flying from Ontario to Dulles Intl

Discover the top 5 airlines that operate flights from Ontario to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 233AverageC$ 373FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 256AverageC$ 497FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 286AverageC$ 573FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 309AverageC$ 405FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJetCheapestC$ 491AverageC$ 592FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Dulles Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ontario to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Ontario today and book when prices fit your budget.

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