Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Washington, D.C. Dulles Intl Airport to Ontario from C$ 157

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
22 Jan — 29 Jan1
1 adult

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 17 January 2025.

Round-trip from

C$ 269

One-way from

C$ 157
Porter Airlines
  • Porter Airlines
  • 4/3-5/3
  • Nonstop
  • 2h 59m total
  • Washington, D.C. to Ontario
Search Deals
Air Canada
  • Air Canada
  • 10/2
  • Nonstop
  • 1h 31m total
  • Washington, D.C. to Ontario
Search Deals

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 17 January 2025.

Tue 25/22:10 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Fri 28/211:20 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 16/1C$ 272
Fri 7/37:00 a.m.IAD - YTZ
Nonstop1h 30mMultiple Airlines
Mon 17/38:55 p.m.YTZ - IAD
Nonstop1h 29mMultiple Airlines
Deal found 16/1C$ 318
Wed 5/210:35 a.m.IAD - YYZ
Nonstop1h 31mAir Canada
Tue 11/212:15 p.m.YYZ - IAD
Nonstop1h 36mAir Canada
Deal found 14/1C$ 368
Tue 15/47:00 a.m.IAD - YUL
1 stop4h 15mPorter Airlines
Tue 15/44:00 p.m.YUL - IAD
1 stop6h 24mPorter Airlines
Deal found 15/1C$ 397
Thu 6/28:15 a.m.IAD - YYZ
1 stop9h 24mUnited Airlines
Thu 6/27:40 p.m.YYZ - IAD
Nonstop1h 41mUnited Airlines
Deal found 16/1C$ 401
Sun 23/22:00 p.m.IAD - YOW
1 stop4h 39mPorter Airlines
Tue 25/28:40 a.m.YOW - IAD
1 stop4h 09mPorter Airlines
Deal found 16/1C$ 402
Thu 6/212:38 p.m.IAD - YYZ
Nonstop1h 40mLufthansa
Sun 9/210:00 a.m.YYZ - IAD
Nonstop1h 41mLufthansa
Deal found 15/1C$ 412
Thu 20/23:55 p.m.IAD - YTZ
1 stop5h 55mAir Canada
Mon 24/24:20 p.m.YTZ - IAD
1 stop5h 03mAir Canada
Deal found 16/1C$ 415
Sat 15/28:20 a.m.IAD - YYZ
Nonstop1h 38mMultiple Airlines
Mon 17/26:15 a.m.YYZ - IAD
Nonstop1h 50mMultiple Airlines
Deal found 16/1C$ 428
Thu 20/23:55 p.m.IAD - YUL
Nonstop1h 55mMultiple Airlines
Sun 23/26:50 a.m.YUL - IAD
1 stop5h 59mMultiple Airlines
Deal found 16/1C$ 457
Thu 30/112:05 p.m.IAD - YYZ
1 stop5h 09mDelta
Mon 3/212:15 p.m.YYZ - IAD
1 stop6h 41mDelta
Deal found 14/1C$ 469
Thu 13/31:45 p.m.IAD - YOW
1 stop3h 24mMultiple Airlines
Tue 25/39:20 a.m.YOW - IAD
1 stop7h 34mMultiple Airlines
Deal found 15/1C$ 487

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 629,999 searches. Data last updated 17 January 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 4/3

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

Nonstop1h 30m

Toronto Island

Wed 5/3

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

Nonstop1h 29m

C$ 269

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Tue 18/2

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

Nonstop1h 30m

Toronto Island

Wed 19/2

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

Nonstop1h 29m

C$ 309

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 20/2

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

Nonstop1h 30m

Toronto Island

Sun 23/2

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

Nonstop1h 29m

C$ 319

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 5/2

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

Nonstop1h 31m

Toronto Pearson Intl

Tue 11/2

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

Nonstop1h 36m

C$ 368

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 20/2

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

1 stop5h 55m

Toronto Island

Sun 23/2

4:20 p.m.-9:23 p.m.

1 stop5h 03m

C$ 388

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Thu 6/2

12:38 p.m.-2:18 p.m.

Nonstop1h 40m

Toronto Pearson Intl

Sun 9/2

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

Nonstop1h 36m

C$ 391

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Tue 15/4

7:00 a.m.-11:15 a.m.

1 stop4h 15m

Montreal Pierre Elliott Trudeau Intl

Tue 15/4

4:00 p.m.-10:24 p.m.

1 stop6h 24m

C$ 397

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Thu 6/2

8:15 a.m.-5:39 p.m.

1 stop9h 24m

Toronto Pearson Intl

Thu 6/2

7:40 p.m.-9:21 p.m.

Nonstop1h 41m

C$ 401

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 23/2

2:00 p.m.-6:39 p.m.

1 stop4h 39m

Ottawa

Tue 25/2

8:40 a.m.-12:49 p.m.

1 stop4h 09m

C$ 402

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Fri 14/2

10:10 p.m.-11:46 p.m.

Nonstop1h 36m

Toronto Pearson Intl

Mon 17/2

6:15 a.m.-8:05 a.m.

Nonstop1h 50m

C$ 428

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/1

Showing 1-10 of 59 results
1
2
3
...
6

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 C$ 168). Flying from Washington, D.C. Dulles Intl Airport to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 17 January 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Region of Ontario as you normally would.

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 17 January 2025.

The most flights from IAD to CAON are scheduled on a Wednesday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (14 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 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 17 January 2025.
See what other customers who have flown with Air Canada, Delta and American Airlines from Washington, D.C. to Ontario have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,511 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

8.0

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
8,511 reviews
Delta
8.0
Very good
8,511 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

8.0

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
276 reviews
Delta
8.0
Very good
8,511 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,339 reviews
Delta
8.0
Very good
8,511 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

8.0

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
8,511 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

8.0

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
8,964 reviews
Delta
8.0
Very good
8,511 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

8.0

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 C$ 157. However, be on the lookout for offers from Porter Airlines and United Airlines, 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?

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

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

    Before booking your flight to Region of Ontario from Washington, D.C. Dulles Intl Airport, check out the most reliable airlines to get you to your destination on time: ANA (87%), Copa Airlines (81%), Air Canada( 81%).

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

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Region of Ontario? While on average our users pay C$ 675, our data indicates the cheapest price to be C$ 142. The most popular route (Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl), is priced around C$ 390.

  • 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 C$ 168). Flying from Washington, D.C. Dulles Intl Airport to Region of Ontario in July is currently the most expensive (average of C$ 258). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 Pierre Elliott Trudeau Intl flights
Dulles Intl to Pearson Intl flights
Dulles Intl to Vancouver Intl flights
Reagan-National to Pearson Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Baltimore to Vancouver Intl flights
Dulles Intl to Toronto Island flights
Dulles Intl to Calgary flights
Reagan-National to Vancouver Intl flights
Baltimore to Pearson Intl flights
Baltimore to Pierre Elliott Trudeau Intl flights
Dulles Intl to Ottawa flights
Baltimore to Calgary flights
Reagan-National to Calgary flights
Baltimore to Toronto Island flights
Dulles Intl to Québec City flights
Reagan-National to Toronto Island flights
Dulles Intl to Abbotsford flights
Reagan-National to Ottawa flights
Baltimore to Québec City flights
Baltimore to Ottawa flights
Dulles Intl to Halifax flights
Reagan-National to Québec City flights
Baltimore to Halifax flights
Baltimore to Winnipeg flights
Reagan-National to Winnipeg flights
Dulles Intl to Winnipeg flights
Baltimore to Edmonton flights
Reagan-National to Edmonton flights
Dulles Intl to Edmonton flights
Dulles Intl to Victoria flights
Baltimore to Victoria flights
Dulles Intl to Kelowna flights
Baltimore to Sydney flights
Baltimore to Charlottetown flights
Dulles Intl to Hamilton flights
Reagan-National to Victoria flights
Dulles Intl to Thunder Bay flights
Dulles Intl to Charlottetown flights
Baltimore to Moncton flights

Top 3 airlines flying from Dulles Intl to Ontario

Discover the top 3 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 629,999 searches. Data last updated 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 184AverageC$ 541FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 196AverageC$ 447FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 291AverageC$ 510FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights makes it easy to find Dulles Intl to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dulles Intl to Ontario for you. Better yet — we are completely free to use.

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

Yes, we can. To see specific flights from Dulles Intl to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Not ready to book yet? You can track prices for flights from Dulles Intl to Ontario on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.