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Cheap flights from District of Columbia to Ontario from C$ 141

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 27/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from District of Columbia to Ontario

Keep the following information in mind while searching for District of Columbia to Ontario flight deals. Data was last updated 30 October 2025.

Round-trip from

C$ 292

One-way from

C$ 141

Popular in

October

Cheapest in

June

Average price

C$ 445

Good round-trip deal

C$ 178 or less

Good one-way deal

C$ 152 or less
Porter Airlines
  • Porter Airlines
  • 4/12-7/12
  • Nonstop
  • 2h 59m total
  • District of Columbia to Ontario
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Air Canada
  • Air Canada
  • 27/12
  • Nonstop
  • 1h 37m total
  • District of Columbia to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from District of Columbia to Ontario.
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Price to beat on a one-way flight from District of Columbia to Ontario.
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Find flight deals from District of Columbia to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from District of Columbia to Ontario
Explore the most affordable flight options available from District of Columbia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2025.

Wed 19/116:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Sun 23/118:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 292
Thu 20/1111:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Sun 23/118:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 293
Thu 4/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Sat 6/1211:00 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 295
Sun 7/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Thu 11/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 299
Mon 24/1111:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Wed 3/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 300
Thu 27/1111:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Fri 28/113:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 304
Sun 23/116:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Fri 28/113:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 306
Wed 26/116:00 a.m.DCA - YTZ
1 stop5h 55mAir Canada
Fri 28/118:30 a.m.YTZ - DCA
1 stop7h 01mAir Canada
Deal found 28/10C$ 306
Thu 20/119:45 a.m.IAD - YTZ
1 stop7h 10mAir Canada
Sun 23/113:30 p.m.YTZ - IAD
1 stop5h 24mAir Canada
Deal found 29/10C$ 307
Thu 20/1112:55 p.m.DCA - YTZ
1 stop5h 18mAir Canada
Sun 23/118:30 a.m.YTZ - DCA
1 stop7h 01mAir Canada
Deal found 29/10C$ 307
Sat 22/111:45 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Fri 28/113:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 28/10C$ 311
Fri 12/1212:55 p.m.DCA - YYZ
1 stop6h 31mAir Canada
Sun 14/126:10 p.m.YYZ - DCA
Nonstop1h 35mAir Canada
Deal found 30/10C$ 311

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 30 October 2025.
Use the filters below to find and compare flights from District of Columbia to Ontario that are best for you.

Fly from

District of Columbia

Fly to

Ontario

Route

Depart

Return

Price

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Tue 25/11

6:30 p.m.-8:00 p.m.

Nonstop1h 30m

Toronto Island

Fri 28/11

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

C$ 292

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 20/11

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

Toronto Island

Sun 23/11

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

Nonstop1h 29m

C$ 299

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Wed 26/11

6:00 a.m.-11:55 a.m.

1 stop5h 55m

Toronto Island

Fri 28/11

8:30 a.m.-3:31 p.m.

1 stop7h 01m

C$ 306

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Thu 20/11

12:55 p.m.-6:13 p.m.

1 stop5h 18m

Toronto Island

Sun 23/11

8:30 a.m.-3:31 p.m.

1 stop7h 01m

C$ 307

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Sat 29/11

6:00 a.m.-11:55 a.m.

1 stop5h 55m

Toronto Island

Sat 6/12

5:30 p.m.-9:56 p.m.

1 stop4h 26m

C$ 324

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 4/12

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

Toronto Island

Sun 7/12

7:00 a.m.-8:24 p.m.

2 stops13h 24m

C$ 339

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 11/12

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

Toronto Island

Sun 14/12

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

Nonstop1h 29m

C$ 339

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 10/12

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

Toronto Island

Tue 16/12

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

C$ 346

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 12/12

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

Toronto Island

Wed 17/12

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

Nonstop1h 29m

C$ 346

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 11/12

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

Toronto Island

Tue 16/12

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

C$ 346

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/10

Showing 1-10 of 60 results
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Best time to book a flight from District of Columbia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from District of Columbia 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.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Ontario

What is the cheapest month to book a flight from District of Columbia to Region of Ontario?

Currently, March is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of C$ 127). Flying from District of Columbia to Region of Ontario in August is currently the most expensive (average of C$ 239). 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 DC to ON?

Find hourly flight availability from District of Columbia 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 30 October 2025.

It’s optimal to fly from District of Columbia to Region of Ontario at noon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from District of Columbia to Region of Ontario?

Use this chart to determine the cheapest time to fly round-trip from District of Columbia to Ontario. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their District of Columbia to Region of Ontario flight should consider departing on Sunday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from District of Columbia to Region of Ontario?

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 30 October 2025.
See what other customers who have flown with Porter Airlines,United Airlines, andAir Canada from District of Columbia to Ontario have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
384 reviews
Check prices

Food

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Food

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,998 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Food

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,376 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Food

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

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

  • How long is the flight from District of Columbia to Region of Ontario?

    Departing from District of Columbia to Region of Ontario will take you 1h 30m. The distance from District of Columbia to Region of Ontario is about 546 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from District of Columbia to Region of Ontario one-way?

    One-way options have recently been found by users for as low as C$ 141 on Air Canada. Other airlines that offer cheap prices include Porter Airlines from C$ 149 and American Airlines from C$ 149 one-way.

  • Can I find deals for flights from District of Columbia to Ontario that include hotel bookings?

    Yes. In addition to deals on District of Columbia to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from District of Columbia to Ontario?

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

  • Can I find deals for business class flights from District of Columbia to Ontario?

    Yes. Cheapflights offers flight deals from District of Columbia 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 District of Columbia to Region of Ontario?

    Currently, March is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of C$ 127). Flying from District of Columbia to Region of Ontario in August is currently the most expensive (average of C$ 239). 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

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Alternative routes for District of Columbia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from District of Columbia to Ontario

Discover the top 4 airlines that operate flights from District of Columbia 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 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 178AverageC$ 467FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 184AverageC$ 490FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 246AverageC$ 452FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 462AverageC$ 640FlexibilityNo cancel feeOn-time60%
Search WestJet 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 District of Columbia to Ontario?

Deals for District of Columbia to Ontario flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from District of Columbia to Ontario?

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

Can Cheapflights find flights from District of Columbia to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from District of Columbia to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from District of Columbia to Ontario become cheaper?

Yes, Cheapflights offers price alerts on District of Columbia to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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