Dulles Intl

$130+ Cheap flights from Ontario to Dulles Intl (IAD)

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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — IAD
Jan 26 — Feb 21
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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 January 21, 2025.

Round-trip from

$197
(Kiwi.com)

One-way from

$130
(oojo)

Good round-trip deal

$203 or less

Good one-way deal

$208 or less
From Ontario to Washington, D.C. Dulles Intl
One-way flight from Ontario to Washington, D.C. Dulles Intl
Price to beat on a round-trip flight from Ontario to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Ontario to Washington, D.C. Dulles Intl.

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 January 21, 2025.

This Kiwi.com deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2811:20 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Fri 3/77:00 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 1/21$197
This Air Canada deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1310:25 amYTZ - IAD
1 stop4h 48mAir Canada
Sun 2/163:55 pmIAD - YTZ
1 stop5h 55mAir Canada
Deal found 1/20$202
This Air Canada deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/512:15 pmYYZ - IAD
Nonstop1h 36mAir Canada
Thu 3/612:37 pmIAD - YYZ
Nonstop1h 41mAir Canada
Deal found 1/20$202
This Mytrip deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1311:20 amYTZ - IAD
Nonstop1h 29mMultiple Airlines
Sun 2/163:55 pmIAD - YTZ
1 stop5h 55mMultiple Airlines
Deal found 1/21$209
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2710:10 amYYZ - IAD
1 stop5h 40mDelta
Tue 3/412:29 pmIAD - YYZ
1 stop3h 40mDelta
Deal found 1/21$219
This FlightHub deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/811:20 amYTZ - IAD
Nonstop1h 29mAir Transat
Mon 2/102:10 pmIAD - YTZ
Nonstop1h 30mAir Transat
Deal found 1/20$225
This United deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/156:05 pmYYZ - IAD
1 stop4h 59mMultiple Airlines
Sun 2/238:20 amIAD - YYZ
Nonstop1h 38mMultiple Airlines
Deal found 1/20$230
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1810:00 amYYZ - IAD
Nonstop1h 39mUnited Airlines
Wed 3/2610:35 amIAD - YYZ
Nonstop1h 31mUnited Airlines
Deal found 1/21$237
This Booking.com deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/77:00 amYOW - IAD
1 stop5h 59mPorter Airlines
Sun 3/92:00 pmIAD - YOW
1 stop4h 34mPorter Airlines
Deal found 1/21$262
This Air Canada deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/139:45 amYOW - IAD
Nonstop1h 53mAir Canada
Sun 2/1610:20 pmIAD - YOW
1 stop12h 11mAir Canada
Deal found 1/21$267
This Air Canada deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/201:15 pmYUL - IAD
Nonstop1h 58mAir Canada
Thu 2/278:24 amIAD - YUL
Nonstop1h 56mAir Canada
Deal found 1/21$285
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/314:10 pmYUL - IAD
1 stop15h 15mUnited Airlines
Sat 2/13:55 pmIAD - YUL
Nonstop1h 55mUnited Airlines
Deal found 1/21$291

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 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 2/28

11:20 am-12:49 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Fri 3/7

7:00 am-8:30 am

Nonstop1h 30m

$197

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 2/15

6:15 am-8:05 am

Nonstop1h 50m

Washington, D.C. Dulles Intl

Sun 2/23

8:24 am-1:41 pm

1 stop5h 17m

$197

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 2/13

10:25 am-3:13 pm

1 stop4h 48m

Washington, D.C. Dulles Intl

Sun 2/16

3:55 pm-9:50 pm

1 stop5h 55m

$202

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 2/13

11:20 am-12:49 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 2/16

3:55 pm-9:50 pm

1 stop5h 55m

$209

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 2/27

10:10 am-3:50 pm

1 stop5h 40m

Washington, D.C. Dulles Intl

Wed 3/5

12:05 pm-5:14 pm

1 stop5h 09m

$219

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 2/8

11:20 am-12:49 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 2/10

2:10 pm-3:40 pm

Nonstop1h 30m

$225

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 2/7

12:15 pm-1:51 pm

Nonstop1h 36m

Washington, D.C. Dulles Intl

Mon 2/10

12:38 pm-2:18 pm

Nonstop1h 40m

$226

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 3/18

10:00 am-11:39 am

Nonstop1h 39m

Washington, D.C. Dulles Intl

Wed 3/26

10:35 am-12:06 pm

Nonstop1h 31m

$237

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 3/7

7:00 am-12:59 pm

1 stop5h 59m

Washington, D.C. Dulles Intl

Sun 3/9

2:00 pm-6:34 pm

1 stop4h 34m

$262

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 2/13

9:45 am-11:38 am

Nonstop1h 53m

Washington, D.C. Dulles Intl

Sun 2/16

10:20 pm-10:31 am

1 stop12h 11m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 44 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, August is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Region of Ontario to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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 January 21, 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 January 21, 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 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 January 21, 2025.
Get a feel of what it's like to fly with Porter Airlines, United Airlines and Air Canada from Ontario to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 10

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

8.0
Very good
8,521 reviews
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 10

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

7.9
Good
277 reviews
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 10

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

7.8
Good
381 reviews
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 10

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

7.4
Good
8,984 reviews
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 10

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

7.2
Good
2,829 reviews
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.6

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?

    For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as $130. Users have also found prices from $132 and $139 on Air Canada and Delta, respectively.

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

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

    Before booking your flight to Washington, D.C. Dulles Intl Airport from Region of Ontario, check out the most reliable airlines to get you to your destination on time: ANA (94%), Republic Airways (82%), Copa Airlines( 82%).

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

    On average you can expect to pay $631 for a flight from Region of Ontario to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $127 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl) is currently priced at $215.

  • 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, August is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Region of Ontario to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Fairfax
Arlington
Alexandria
Springfield
Silver Spring
Rockville
Tysons
Gaithersburg
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Greenbelt
Sterling
Easton
Oxon Hill
Herndon
Woodbridge
Bowie
Reston

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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.

Top 3 airlines flying from Ontario to Dulles Intl

Discover the top 3 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 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$185Average$333FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$214Average$350FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$219Average$389FlexibilityNo cancel feeOn-time69%
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