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$106+ Cheap flights from Dulles Intl (IAD) to Ontario

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Dulles Intl to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Ontario (CAON). 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

$168
(Trip.com)

One-way from

$108
(Gotogate)
From Washington, D.C. Dulles Intl to Ontario
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One-way flight from Washington, D.C. Dulles Intl to Ontario
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Find flight deals from Dulles Intl to Ontario

Cheapest flights from Dulles Intl to Ontario
Explore the most affordable flight options available from Dulles Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/47:00 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Wed 3/58:55 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 1/21$167
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/127:00 amIAD - YTZ
Nonstop1h 30mMultiple Airlines
Thu 3/138:50 amYTZ - IAD
2 stops6h 23mMultiple Airlines
Deal found 1/20$183
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 2/1910:35 amIAD - YYZ
Nonstop1h 31mAir Canada
Mon 2/248:10 amYYZ - IAD
Nonstop1h 36mAir Canada
Deal found 1/20$220
This Trip.com deal was found by Cheapflights users on 1/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/192:10 pmIAD - YUL
1 stop3h 50mPorter Airlines
Tue 2/256:50 amYUL - IAD
1 stop5h 59mPorter Airlines
Deal found 1/19$224
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 3/58:24 amIAD - YTZ
1 stop6h 26mAir Canada
Wed 3/1210:25 amYTZ - IAD
1 stop4h 48mAir Canada
Deal found 1/20$237
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/182:10 pmIAD - YOW
1 stop6h 24mPorter Airlines
Tue 2/258:40 amYOW - IAD
1 stop4h 09mPorter Airlines
Deal found 1/20$238
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/216:00 amIAD - YYZ
1 stop5h 56mDelta
Mon 2/246:00 amYYZ - IAD
1 stop5h 25mDelta
Deal found 1/20$257
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.
Fri 2/2810:05 pmIAD - YYZ
1 stop9h 39mMultiple Airlines
Tue 3/410:00 amYYZ - IAD
Nonstop1h 39mMultiple Airlines
Deal found 1/20$264
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/203:55 pmIAD - YUL
Nonstop1h 55mMultiple Airlines
Sun 2/236:50 amYUL - IAD
1 stop5h 59mMultiple Airlines
Deal found 1/20$270
This Kissandfly.com 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/132:35 pmIAD - YYZ
Nonstop1h 31mLufthansa
Sun 2/168:10 amYYZ - IAD
Nonstop1h 36mLufthansa
Deal found 1/20$283
This United Airlines 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1512:40 pmIAD - YYZ
Nonstop1h 38mUnited Airlines
Sat 2/156:05 pmYYZ - IAD
1 stop4h 59mUnited Airlines
Deal found 1/20$285
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.
Mon 2/105:08 pmIAD - YOW
Nonstop1h 46mAir Canada
Wed 2/129:45 amYOW - IAD
Nonstop1h 53mAir Canada
Deal found 1/20$293

Find flights from Dulles Intl to Ontario within your budget

Customize your flight search to find flights from Dulles Intl to Ontario 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

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Tue 3/4

7:00 am-8:30 am

Nonstop1h 30m

Toronto Island

Wed 3/5

8:55 pm-10:24 pm

Nonstop1h 29m

$167

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 3/12

7:00 am-8:30 am

Nonstop1h 30m

Toronto Island

Thu 3/13

8:50 am-3:13 pm

2 stops6h 23m

$183

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 2/19

10:35 am-12:06 pm

Nonstop1h 31m

Toronto Pearson Intl

Mon 2/24

8:10 am-9:46 am

Nonstop1h 36m

$220

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Wed 2/19

2:10 pm-6:00 pm

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Tue 2/25

6:50 am-12:49 pm

1 stop5h 59m

$224

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 3/5

8:24 am-2:50 pm

1 stop6h 26m

Toronto Island

Wed 3/12

10:25 am-3:13 pm

1 stop4h 48m

$237

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Tue 2/18

2:10 pm-8:34 pm

1 stop6h 24m

Ottawa

Tue 2/25

8:40 am-12:49 pm

1 stop4h 09m

$238

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Fri 2/21

6:00 am-11:56 am

1 stop5h 56m

Toronto Pearson Intl

Mon 2/24

6:00 am-11:25 am

1 stop5h 25m

$257

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Fri 2/28

10:05 pm-7:44 am

1 stop9h 39m

Toronto Pearson Intl

Tue 3/4

10:00 am-11:39 am

Nonstop1h 39m

$264

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Thu 2/20

3:55 pm-5:50 pm

Nonstop1h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 2/23

6:50 am-12:49 pm

1 stop5h 59m

$270

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Thu 2/13

2:35 pm-4:06 pm

Nonstop1h 31m

Toronto Pearson Intl

Sun 2/16

8:10 am-9:46 am

Nonstop1h 36m

$283

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 54 results
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Best time to book a flight from Dulles Intl to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Dulles Intl 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 Dulles Intl to Ontario

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

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Region of Ontario (average of $243). Flying from Washington, D.C. Dulles Intl Airport to Region of Ontario in July is currently the most expensive (average of $359). 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 IAD to ON?

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

Explore weekly flight availability from Dulles Intl to Ontario. 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 IAD to CAON are scheduled on a Monday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 on average).

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Region of Ontario, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated January 21, 2025.
Peruse reviews from past customers who have flown with Air Canada, Delta and United Airlines from Washington, D.C. to Ontario to help guide your decision. 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

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Ontario. 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 Washington, D.C. Dulles Intl Airport to Region of Ontario one-way?

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $108. However, be on the lookout for offers from Porter Airlines and Delta, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Region of Ontario for a low price.

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

    The most popular flight routes from Washington, D.C. Dulles Intl Airport to Region of Ontario are Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl, Washington, D.C. Dulles Intl - Toronto Pearson Intl and Washington, D.C. Dulles Intl - Toronto Island.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Dulles Intl Airport to Region of Ontario consider choosing ANA (87%), Copa Airlines (81%) or Air Canada (81%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $907 for a flight from Washington, D.C. Dulles Intl Airport to Region of Ontario. The cheapest flight overall is $103 while the most popular route, (Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl) is currently priced at $236.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Ontario 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 Washington, D.C. Dulles Intl Airport to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Region of Ontario (average of $243). Flying from Washington, D.C. Dulles Intl Airport to Region of Ontario in July is currently the most expensive (average of $359). 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.

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Alternative routes for Dulles Intl to Ontario

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

Top 5 airlines flying from Dulles Intl to Ontario

Discover the top 5 airlines that operate flights from Dulles Intl to Ontario. 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
Air CanadaCheapest$124Average$447FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$149Average$458FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$203Average$358FlexibilityNo cancel feeOn-time52%
Air TransatCheapest$250Average$329FlexibilityNo cancel feeOn-time50%
WestJetCheapest$311Average$478FlexibilityNo cancel feeOn-time60%
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