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Cheap flights from District of Columbia to Ontario from C$ 148

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
28 Aug — 4 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap 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 29 July 2026.

Mon 24/811:25 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Fri 28/89:15 a.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 28/7C$ 312
Tue 8/99:45 a.m.
IAD
-
YTZ
1 stop4h 35m
Air Canada
Tue 15/912:30 p.m.
YTZ
-
IAD
1 stop6h 30m
Air Canada
Deal found 27/7C$ 313
Mon 24/811:25 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 1/99:15 a.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 26/7C$ 316
Sat 29/812:40 p.m.
DCA
-
YTZ
1 stop5h 40m
Air Canada
Sun 30/88:20 a.m.
YTZ
-
DCA
1 stop3h 40m
Air Canada
Deal found 24/7C$ 316
Thu 20/811:25 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 24/81:40 p.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 27/7C$ 317
Mon 7/96:59 a.m.
DCA
-
YYZ
Nonstop1h 36m
Air Canada
Mon 14/98:55 p.m.
YYZ
-
DCA
Nonstop1h 39m
Air Canada
Deal found 24/7C$ 317
Fri 11/96:00 a.m.
DCA
-
YTZ
2 stops7h 15m
Air Canada
Tue 15/98:20 a.m.
YTZ
-
DCA
2 stops7h 20m
Air Canada
Deal found 29/7C$ 317
Wed 12/83:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 18/89:15 a.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 28/7C$ 319
Wed 19/812:40 p.m.
DCA
-
YYZ
1 stop4h 28m
Air Canada
Wed 19/88:55 p.m.
YYZ
-
DCA
Nonstop1h 36m
Air Canada
Deal found 26/7C$ 319
Wed 12/83:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Wed 19/81:40 p.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 28/7C$ 320
Thu 27/88:40 p.m.
DCA
-
YYZ
Nonstop1h 31m
Air Canada
Mon 31/88:00 a.m.
YYZ
-
DCA
1 stop4h 00m
Air Canada
Deal found 27/7C$ 320
Fri 11/96:00 a.m.
DCA
-
YTZ
1 stop5h 50m
Air Canada
Fri 18/98:20 a.m.
YTZ
-
DCA
1 stop3h 54m
Air Canada
Deal found 28/7C$ 322

Find 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 29 July 2026.

Round-trip from

C$ 312

One-way from

C$ 148

Popular in

May

Cheapest in

January

Average price

C$ 451

Good round-trip deal

C$ 235 or less

Good one-way deal

C$ 188 or less
Porter Airlines
  • Porter Airlines
  • 24/8-25/8
  • Nonstop
  • 3h 00m total
  • District of Columbia to Ontario
Search Deals
Air Canada
  • Air Canada
  • 11/8
  • 1 total stop
  • 4h 36m total
  • District of Columbia to Ontario
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from District of Columbia to Ontario.
Search Deals
Price to beat on a one-way flight from District of Columbia to Ontario.
Search Deals

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 29 July 2026.
Use the filters below to find and compare flights from District of Columbia to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Sun 11/10

9:40 a.m.-2:20 p.m.

1 stop4h 40m

Toronto Island

Thu 15/10

8:20 a.m.-12:00 p.m.

1 stop3h 40m

C$ 341

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Mon 10/8

12:40 p.m.-6:20 p.m.

1 stop5h 40m

Toronto Island

Wed 12/8

8:20 a.m.-12:00 p.m.

1 stop3h 40m

C$ 348

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Wed 30/9

5:30 p.m.-11:39 p.m.

1 stop6h 09m

Toronto Pearson Intl

Thu 22/10

6:10 p.m.-11:07 p.m.

1 stop4h 57m

C$ 381

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Tue 18/8

5:29 p.m.-11:03 p.m.

1 stop5h 34m

Toronto Pearson Intl

Fri 21/8

2:24 p.m.-10:59 p.m.

1 stop8h 35m

C$ 381

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Tue 13/10

6:10 a.m.-1:36 p.m.

1 stop7h 26m

Toronto Pearson Intl

Mon 19/10

6:10 p.m.-11:07 p.m.

1 stop4h 57m

C$ 381

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Thu 27/8

6:10 a.m.-1:34 p.m.

1 stop7h 24m

Toronto Pearson Intl

Mon 31/8

6:10 a.m.-10:23 a.m.

1 stop4h 13m

C$ 381

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sun 18/10

6:05 a.m.-11:19 a.m.

1 stop5h 14m

Toronto Pearson Intl

Tue 20/10

2:26 p.m.-11:16 p.m.

1 stop8h 50m

C$ 381

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Fri 30/10

5:30 p.m.-11:36 p.m.

1 stop6h 06m

Toronto Pearson Intl

Tue 3/11

12:10 p.m.-4:39 p.m.

1 stop4h 29m

C$ 402

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 30/9

6:45 a.m.-11:43 a.m.

1 stop4h 58m

Toronto Pearson Intl

Sat 10/10

6:55 p.m.-8:25 p.m.

Nonstop1h 30m

C$ 405

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 21/10

1:10 p.m.-11:59 p.m.

1 stop10h 49m

Toronto Pearson Intl

Sun 25/10

6:40 p.m.-8:10 p.m.

Nonstop1h 30m

C$ 405

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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, January is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of C$ 442). Flying from District of Columbia to Region of Ontario in July is currently the most expensive (average of C$ 518). 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 29 July 2026.

It’s optimal to fly from District of Columbia to Region of Ontario at noon. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight in the afternoon.

Weekly flight availability from District of Columbia to Region of Ontario

Explore weekly flight availability from District of Columbia 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 29 July 2026.

The most flights from USDC to CAON are scheduled on a Monday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

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

Airfare is below average for this route at the moment.
District of Columbia to Region of Ontario flights typically cost between C$ 426 and C$ 727 in August.
The cheapest round-trip price found within the last 5 days was C$ 323 on Air Canada (25 Aug-25 Aug).

How far ahead should I book a flight from District of Columbia to Region of Ontario?

The price you pay for your flight from District of Columbia to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 78 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 25 July 2026.

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

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 29 July 2026.
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
449 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.5

Overall

8.0

Entertainment

6.9

Comfort

8.0

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
449 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.5

Overall

8.0

Entertainment

6.9

Comfort

8.0

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
United Airlines
7.4
Good
10,052 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.5

Overall

8.0

Entertainment

6.9

Comfort

8.0

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,405 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.5

Overall

8.0

Entertainment

6.9

Comfort

8.0

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

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$ 114 on Porter Airlines. Other airlines that offer cheap prices include United Airlines from C$ 125 and Air Canada from C$ 130 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, January is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of C$ 442). Flying from District of Columbia to Region of Ontario in July is currently the most expensive (average of C$ 518). 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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Newark to Pearson Intl flights
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Top 3 airlines flying from District of Columbia to Ontario

Discover the top 3 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 29 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 180AverageC$ 545FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 288AverageC$ 399FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 304AverageC$ 519FlexibilityNo cancel feeOn-time69%
Search United 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 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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