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Cheap flights from Ontario to District of Columbia from C$ 171

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — IAD
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Ontario to District of Columbia

Keep the following information in mind while searching for Ontario to District of Columbia flight deals. Data was last updated 15 September 2025.

Round-trip from

C$ 256

One-way from

C$ 171

Popular in

June

Cheapest in

April

Average price

C$ 326

Good round-trip deal

C$ 259 or less

Good one-way deal

C$ 154 or less
Porter Airlines
  • Porter Airlines
  • 17/10-20/10
  • Nonstop
  • 3h 04m total
  • Ontario to District of Columbia
Search Deals
Porter Airlines
  • Porter Airlines
  • 3/10
  • Nonstop
  • 1h 31m total
  • Ontario to District of Columbia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Ontario to District of Columbia.
Search Deals
Price to beat on a one-way flight from Ontario to District of Columbia.
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Find flight deals from Ontario to District of Columbia

Cheapest flights from Ontario to District of Columbia
Explore the most affordable flight options available from Ontario to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Fri 17/108:45 a.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Mon 20/1011:35 a.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 14/9C$ 256
Tue 28/108:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 4/1111:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 13/9C$ 261
Thu 16/108:45 a.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 19/1011:35 a.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 14/9C$ 262
Sat 4/101:35 p.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 5/1011:35 a.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 13/9C$ 265
Fri 17/101:35 p.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 19/104:20 p.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 14/9C$ 269
Fri 28/118:15 a.m.YYZ - DCA
1 stop4h 04mAir Canada
Fri 28/118:40 p.m.DCA - YYZ
Nonstop1h 37mAir Canada
Deal found 15/9C$ 274
Sun 12/108:45 a.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 19/1011:35 a.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 14/9C$ 274
Thu 23/108:45 a.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Wed 5/1111:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 13/9C$ 275
Sat 25/101:35 p.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 26/1011:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 14/9C$ 276
Sun 23/118:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 2/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 13/9C$ 278
Tue 7/107:25 a.m.YYZ - DCA
Nonstop1h 34mAir Canada
Wed 8/106:59 a.m.DCA - YYZ
Nonstop1h 32mAir Canada
Deal found 15/9C$ 280
Tue 7/1012:10 p.m.YYZ - IAD
Nonstop1h 28mAir Canada
Wed 8/1010:20 a.m.IAD - YYZ
Nonstop1h 32mAir Canada
Deal found 15/9C$ 280

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to District of Columbia 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 15 September 2025.
Use the filters below to find and compare flights from Ontario to District of Columbia that are best for you.

Fly from

Ontario

Fly to

District of Columbia

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 23/10

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Tue 28/10

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

Nonstop1h 30m

C$ 256

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 17/10

8:45 a.m.-10:16 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 19/10

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

C$ 256

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 27/11

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

Nonstop1h 29m

Washington, D.C. Dulles Intl

Wed 3/12

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

Nonstop1h 30m

C$ 265

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 4/10

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 5/10

11:35 a.m.-1:08 p.m.

Nonstop1h 33m

C$ 265

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 25/10

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 26/10

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

Nonstop1h 30m

C$ 268

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 6/10

8:45 a.m.-10:16 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Wed 8/10

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

C$ 268

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 21/10

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Fri 24/10

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

C$ 268

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 17/10

8:45 a.m.-10:16 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Tue 21/10

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

C$ 268

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 9/10

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sat 11/10

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

C$ 269

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Wed 12/11

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

1 stop7h 01m

Washington, D.C. Reagan-National

Fri 14/11

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

1 stop5h 55m

C$ 286

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

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

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

Cheapflights Insights

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

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

Currently, February is the cheapest month in which you can book a flight from Region of Ontario to District of Columbia (average of C$ 256). Flying from Region of Ontario to District of Columbia in October is currently the most expensive (average of C$ 352). 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 DC?

Find hourly flight availability from Ontario to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 September 2025.

When flying from Region of Ontario to District of Columbia, 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 District of Columbia

Explore weekly flight availability from Ontario to District of Columbia. 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 15 September 2025.

The most flights from CAON to USDC are scheduled on a Monday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

Reviews of airlines servicing District of Columbia

Get insights into the airlines that provide service to District of Columbia. 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 District of Columbia. Reviews last updated 15 September 2025.
See what other customers who have flown with Porter Airlines,Air Transat, andUnited Airlines from Ontario to District of Columbia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Crew

8.6

Comfort

7.9

Overall

7.9

Food

7.6

Boarding

8.1

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
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Crew

8.6

Comfort

7.9

Overall

7.9

Food

7.6

Boarding

8.1

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 Transat
7.7
Good
438 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Crew

8.6

Comfort

7.9

Overall

7.9

Food

7.6

Boarding

8.1

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
8,929 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Crew

8.6

Comfort

7.9

Overall

7.9

Food

7.6

Boarding

8.1

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.
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Crew

8.6

Comfort

7.9

Overall

7.9

Food

7.6

Boarding

8.1

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
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Crew

8.6

Comfort

7.9

Overall

7.9

Food

7.6

Boarding

8.1

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 Ontario to District of Columbia. 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 Region of Ontario to District of Columbia?

    Departing from Region of Ontario to District of Columbia will take you 1h 31m. The distance from Region of Ontario to District of Columbia is about 546 km. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from Region of Ontario to District of Columbia are Porter Airlines (C$ 171), Air Canada (C$ 181), and United Airlines (C$ 186).

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Region of Ontario to District of Columbia (average of C$ 256). Flying from Region of Ontario to District of Columbia in October is currently the most expensive (average of C$ 352). 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 Ontario to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Ontario to District of Columbia

Discover the top 7 airlines that operate flights from Ontario to District of Columbia. 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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 185AverageC$ 337FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 200AverageC$ 428FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 204AverageC$ 351FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
American AirlinesCheapestC$ 211AverageC$ 406FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 269AverageC$ 590FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 310AverageC$ 373FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 383AverageC$ 545FlexibilityNo 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 Ontario to District of Columbia?

When you search for this flight from Ontario to District of Columbia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from Ontario to District of Columbia by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Need flexible booking options for your flight to District of Columbia from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to District of Columbia from Ontario today and book when prices fit your budget.

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