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Cheap flights from Ontario to Washington, D.C. Dulles Intl Airport from C$ 187

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 26/2. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — IAD
26 Jan — 2 Feb1
1 adult

Cheap flight deals from Ontario to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (CAON) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 January 2025.

Round-trip from

C$ 291

One-way from

C$ 187

Good round-trip deal

C$ 297 or less

Good one-way deal

C$ 179 or less
Air Canada
  • Air Canada
  • 13/2-16/2
  • 2 total stops
  • 10h 43m total
  • Ontario to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 26/2
  • 1 total stop
  • 3h 19m total
  • Ontario to Washington, D.C.
Search Deals
Price to beat on a round-trip flight from Ontario to Washington, D.C. Dulles Intl.
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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 21 January 2025.

Thu 13/210:25 a.m.YTZ - IAD
1 stop4h 48mAir Canada
Sun 16/23:55 p.m.IAD - YTZ
1 stop5h 55mAir Canada
Deal found 20/1C$ 291
Wed 5/312:15 p.m.YYZ - IAD
Nonstop1h 36mAir Canada
Thu 6/312:37 p.m.IAD - YYZ
Nonstop1h 41mAir Canada
Deal found 20/1C$ 291
Thu 13/211:20 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Mon 17/22:10 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 20/1C$ 294
Thu 13/211:20 a.m.YTZ - IAD
Nonstop1h 29mMultiple Airlines
Sun 16/23:55 p.m.IAD - YTZ
1 stop5h 55mMultiple Airlines
Deal found 21/1C$ 301
Mon 31/37:47 p.m.YYZ - IAD
Nonstop1h 38mMultiple Airlines
Tue 1/42:35 p.m.IAD - YYZ
Nonstop1h 34mMultiple Airlines
Deal found 20/1C$ 310
Sun 9/38:55 p.m.YTZ - IAD
Nonstop1h 29mAir Transat
Sat 15/37:00 a.m.IAD - YTZ
Nonstop1h 30mAir Transat
Deal found 21/1C$ 320
Tue 18/27:45 a.m.YYZ - IAD
1 stop4h 03mDelta
Thu 20/212:29 p.m.IAD - YYZ
1 stop3h 40mDelta
Deal found 20/1C$ 322
Tue 18/310:00 a.m.YYZ - IAD
Nonstop1h 39mUnited Airlines
Wed 26/310:35 a.m.IAD - YYZ
Nonstop1h 31mUnited Airlines
Deal found 21/1C$ 341
Thu 27/26:15 a.m.YYZ - IAD
1 stop5h 42mWestJet
Thu 27/23:05 p.m.IAD - YYZ
1 stop8h 02mWestJet
Deal found 21/1C$ 384
Mon 10/37:30 p.m.YOW - IAD
Nonstop1h 53mAir Canada
Sun 6/48:17 a.m.IAD - YOW
Nonstop1h 41mAir Canada
Deal found 20/1C$ 387
Fri 7/35:45 p.m.YOW - IAD
1 stop4h 39mPorter Airlines
Fri 4/47:00 a.m.IAD - YOW
1 stop4h 14mPorter Airlines
Deal found 20/1C$ 389
Thu 20/27:05 a.m.YUL - IAD
1 stop4h 43mDelta
Sun 23/210:03 a.m.IAD - YUL
1 stop6h 55mDelta
Deal found 20/1C$ 409

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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 13/2

10:25 a.m.-3:13 p.m.

1 stop4h 48m

Washington, D.C. Dulles Intl

Sun 16/2

3:55 p.m.-9:50 p.m.

1 stop5h 55m

C$ 291

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 5/3

12:15 p.m.-1:51 p.m.

Nonstop1h 36m

Washington, D.C. Dulles Intl

Thu 6/3

12:37 p.m.-2:18 p.m.

Nonstop1h 41m

C$ 291

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 13/2

11:20 a.m.-12:49 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 17/2

2:10 p.m.-3:40 p.m.

Nonstop1h 30m

C$ 294

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 13/2

11:20 a.m.-12:49 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 16/2

3:55 p.m.-9:50 p.m.

1 stop5h 55m

C$ 301

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 9/3

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

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sat 15/3

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

Nonstop1h 30m

C$ 320

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 18/2

6:00 a.m.-11:48 a.m.

1 stop5h 48m

Washington, D.C. Dulles Intl

Fri 21/2

6:00 a.m.-11:56 a.m.

1 stop5h 56m

C$ 322

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 15/2

6:05 p.m.-11:04 p.m.

1 stop4h 59m

Washington, D.C. Dulles Intl

Sun 23/2

8:20 a.m.-9:58 a.m.

Nonstop1h 38m

C$ 331

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 18/3

10:00 a.m.-11:39 a.m.

Nonstop1h 39m

Washington, D.C. Dulles Intl

Wed 26/3

10:35 a.m.-12:06 p.m.

Nonstop1h 31m

C$ 341

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 13/2

9:45 a.m.-11:38 a.m.

Nonstop1h 53m

Washington, D.C. Dulles Intl

Sun 16/2

10:20 p.m.-10:31 a.m.

1 stop12h 11m

C$ 384

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 7/3

5:45 p.m.-10:24 p.m.

1 stop4h 39m

Washington, D.C. Dulles Intl

Fri 4/4

7:00 a.m.-11:14 a.m.

1 stop4h 14m

C$ 389

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/1

Showing 1-10 of 48 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 21 January 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 21 January 2025.

The most flights from CAON to IAD are scheduled on a Monday (15 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (9 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 21 January 2025.
Read through reviews of airlines operating flights from Ontario to Washington, D.C., such as Porter Airlines, WestJet and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews
Check prices

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

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

Porter Airlines
7.9
Good
277 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

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

Air Transat
7.8
Good
381 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

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

United Airlines
7.4
Good
8,984 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

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

WestJet
7.2
Good
2,829 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

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$ 187 on Porter Airlines. Other airlines that offer cheap prices include Air Canada from C$ 190 and Delta from C$ 200 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 (94%), Republic Airways (82%) and Copa Airlines (82%).

  • 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$ 218. On average you can expect to pay C$ 1,668. The most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), can usually be booked for C$ 307.

  • 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
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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 Reagan-National flights
Pierre Elliott Trudeau Intl to Dulles Intl flights
Pearson Intl to Baltimore flights
Toronto Island to Dulles Intl flights
Ottawa to Reagan-National flights
Ottawa to Dulles Intl flights
Vancouver Intl to Dulles Intl flights
Pierre Elliott Trudeau Intl to Baltimore flights
Calgary to Dulles Intl flights
Vancouver Intl to Baltimore flights
Calgary to Baltimore flights
Calgary to Reagan-National flights
Toronto Island to Baltimore flights
Vancouver Intl to Reagan-National flights
Edmonton to Baltimore flights
Edmonton to Dulles Intl flights
Ottawa to Baltimore flights
Edmonton to Reagan-National flights
Toronto Island to Reagan-National flights
Halifax to Dulles Intl flights
Halifax to Reagan-National flights
Halifax to Baltimore flights
Winnipeg to Dulles Intl flights
Québec City to Dulles Intl flights
Winnipeg to Baltimore flights
Victoria to Dulles Intl flights
Fredericton to Dulles Intl flights
Winnipeg to Reagan-National flights
Québec City to Reagan-National flights
Québec City to Baltimore flights
Victoria to Baltimore flights
Regina to Dulles Intl flights
Regina to Baltimore flights
London to Dulles Intl flights
London to Reagan-National flights
London to Baltimore flights
Regina to Reagan-National flights
Kelowna to Dulles Intl flights
Saskatoon to Baltimore flights
Saskatoon to Reagan-National flights
Kelowna to Reagan-National flights
Kelowna to Baltimore flights
St. John's to Dulles Intl flights
Victoria 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 21 January 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 259AverageC$ 509FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 265AverageC$ 380FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 288AverageC$ 523FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 337AverageC$ 420FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJetCheapestC$ 497AverageC$ 604FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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How does Cheapflights help users find flights from Ontario to Dulles Intl?

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Why should you use Cheapflights to find cheap flight tickets from Ontario to Dulles Intl?

Cheapflights helps you find that perfect flight to Dulles Intl from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ontario to Dulles Intl with no change fees?

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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