How long is the flight from Washington, D.C. to Region of Ontario?

A quick flight from Washington, D.C. to Region of Ontario can take about 1h 30m. Porter Airlines provides one of the quickest options available for as low as $213. The distance from Washington, D.C. to Region of Ontario is about 339 mi. This flight may include one or multiple stops.

What are the cheapest airlines to fly from Washington, D.C. to Region of Ontario one-way?

$79 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Porter Airlines and Delta, with prices starting from $80 and $91, respectively.

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.

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).

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

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

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

On average you can expect to pay $730 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $97 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at $236.

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

Before booking your flight to Region of Ontario from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Jazz (85%), United Airlines (79%), Air Canada( 79%).

What are the most popular airlines that fly from Washington, D.C. to Region of Ontario?

When booking a flight from Washington, D.C. to Region of Ontario, you may want to consider flying on Air Canada, Porter Airlines or United Airlines as they are the most popular for this route.

Can I find deals for flights from Washington, D.C. to Ontario that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Ontario?

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

Can I find deals for business class flights from Washington, D.C. to Ontario?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$69+ Flights from Washington, D.C. to Ontario

Q: How much does it cost to fly round-trip from Washington, D.C. to Region of Ontario?

Airfare is below average for this route at the moment. Washington, D.C. to Region of Ontario flights typically cost between $263 and $417 in February. The cheapest round-trip price found within the last 3 days was $189 on Multiple Airlines (Feb 5-Feb 8).

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Cheap flight deals from Washington, D.C. to Ontario

Cheapest flights from Washington, D.C. to Ontario
Explore the most affordable flight options available from Washington, D.C. to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

Wed 12/176:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Thu 12/188:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$213

Wed 12/176:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Tue 12/308:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$214

Thu 12/1811:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Thu 1/88:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$215

Thu 12/1811:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Mon 1/58:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$217

Thu 12/1811:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Tue 12/308:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$218

Thu 12/252:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Wed 12/318:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$219

Thu 12/252:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Tue 12/308:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$220

Sun 12/216:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Wed 1/78:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$223

Thu 12/1811:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Sun 12/213:45 pmYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$224

Wed 12/1711:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Fri 1/28:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$225

Wed 12/176:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Wed 12/318:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$226

Wed 12/2411:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Fri 1/98:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$227

Best flights from Washington, D.C. to Ontario
Discover carefully curated flight deals from Washington, D.C. to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Wed 12/176:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Thu 12/188:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$213

Thu 2/512:55 pmDCA - YTZ

1 stop5h 15mAir Canada

Sun 2/85:30 pmYTZ - DCA

1 stop4h 28mAir Canada

Deal found 12/2

$225

Tue 2/31:45 pmDCA - YYZ

1 stop4h 08mDelta

Sun 2/87:45 amYYZ - DCA

1 stop4h 15mDelta

Deal found 12/3

$252

Fri 1/162:48 pmDCA - YYZ

Nonstop1h 47mAmerican Airlines

Fri 1/235:15 pmYYZ - DCA

Nonstop1h 59mAmerican Airlines

Deal found 12/2

$264

Thu 1/1512:35 pmIAD - YYZ

Nonstop1h 39mUnited Airlines

Mon 1/197:40 pmYYZ - IAD

Nonstop1h 45mUnited Airlines

Deal found 12/3

$264

Sun 1/188:49 amIAD - YOW

1 stop8h 24mMultiple Airlines

Sun 1/254:20 pmYOW - IAD

2 stops21h 58mMultiple Airlines

Deal found 12/4

$313

Fri 3/1311:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Mon 3/168:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/4

$226

Thu 1/812:55 pmDCA - YTZ

1 stop5h 18mAir Canada

Mon 1/125:30 pmYTZ - DCA

1 stop4h 26mAir Canada

Deal found 12/3

$228

Sun 2/88:50 amDCA - YYZ

1 stop4h 34mDelta

Tue 2/1712:11 pmYYZ - DCA

1 stop4h 53mDelta

Deal found 12/3

$252

Fri 2/612:55 pmDCA - YTZ

1 stop5h 15mAir Canada

Thu 2/198:30 amYTZ - DCA

1 stop7h 03mAir Canada

Deal found 12/3

$235

Fri 1/95:16 pmIAD - YYZ

Nonstop1h 41mUnited Airlines

Mon 1/1910:00 amYYZ - IAD

Nonstop1h 48mUnited Airlines

Deal found 12/3

$264

Thu 1/86:05 amDCA - YYZ

1 stop5h 15mDelta

Tue 1/132:25 pmYYZ - DCA

1 stop4h 25mDelta

Deal found 12/3

$252

Tue 12/166:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Wed 12/318:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/2

$253

Wed 2/1812:55 pmDCA - YTZ

1 stop5h 15mAir Canada

Thu 2/198:30 amYTZ - DCA

1 stop7h 03mAir Canada

Deal found 12/3

$235

Thu 1/296:00 amIAD - YYZ

1 stop5h 48mUnited Airlines

Tue 2/310:00 amYYZ - IAD

Nonstop1h 48mUnited Airlines

Deal found 12/3

$274

Wed 1/146:05 amDCA - YYZ

1 stop5h 15mDelta

Mon 1/196:06 amYYZ - DCA

1 stop4h 07mDelta

Deal found 12/3

$252

Wed 12/176:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Sat 12/208:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$256

Mon 12/155:45 amIAD - YOW

2 stops18h 40mMultiple Airlines

Wed 12/176:50 amYOW - IAD

1 stop3h 34mMultiple Airlines

Deal found 12/2

$323

Sat 2/78:50 amDCA - YYZ

1 stop4h 34mDelta

Tue 2/175:10 pmYYZ - DCA

1 stop4h 05mDelta

Deal found 12/3

$252

Mon 2/912:55 pmDCA - YTZ

1 stop5h 15mAir Canada

Sat 2/1410:45 amYTZ - DCA

1 stop4h 48mAir Canada

Deal found 12/3

$253

Thu 1/811:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Fri 1/98:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/2

$258

Thu 1/86:00 amIAD - YYZ

1 stop5h 48mUnited Airlines

Mon 1/122:45 pmYYZ - IAD

Nonstop1h 45mUnited Airlines

Deal found 12/4

$288

Sun 3/159:58 pmIAD - YOW

1 stop19h 15mMultiple Airlines

Sat 3/218:40 amYOW - IAD

1 stop3h 49mMultiple Airlines

Deal found 12/1

$323

Thu 1/2912:32 pmIAD - YYZ

1 stop6h 36mDelta

Sun 2/16:00 amYYZ - IAD

1 stop5h 52mDelta

Deal found 12/4

$252

Thu 2/1212:55 pmDCA - YTZ

1 stop5h 15mAir Canada

Wed 2/1810:45 amYTZ - DCA

1 stop4h 48mAir Canada

Deal found 12/3

$253

Thu 3/1211:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Sun 3/153:45 pmYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$260

Fri 2/67:00 amDCA - YYZ

1 stop4h 48mUnited Airlines

Mon 2/1610:45 amYYZ - DCA

1 stop3h 48mUnited Airlines

Deal found 12/3

$289

Thu 2/59:26 amBWI - YTZ

2 stops12h 37mMultiple Airlines

Sun 2/82:05 pmYTZ - BWI

2 stops18h 26mMultiple Airlines

Deal found 12/2

$329

Mon 2/912:55 pmDCA - YTZ

1 stop5h 15mAir Canada

Fri 2/208:30 amYTZ - DCA

1 stop7h 03mAir Canada

Deal found 12/3

$253

Tue 2/173:30 pmDCA - YYZ

1 stop5h 51mUnited Airlines

Tue 2/2410:45 amYYZ - DCA

1 stop3h 48mUnited Airlines

Deal found 12/3

$289

Last-minute flights from Washington, D.C. to Ontario
Discover last-minute flight deals from Washington, D.C. to Ontario. Data last updated December 4, 2025 and is based on user searches.

Wed 12/176:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Thu 12/188:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$213

Wed 12/176:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Tue 12/308:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$214

Thu 12/1811:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Thu 1/88:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$215

Thu 12/1811:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Mon 1/58:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$217

Thu 12/1811:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Tue 12/308:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$218

Thu 12/252:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Tue 12/308:55 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$220

Thu 1/16:59 amDCA - YYZ

Nonstop1h 36mAir Canada

Wed 1/79:00 pmYYZ - DCA

Nonstop1h 35mAir Canada

Deal found 12/2

$222

Fri 1/211:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Mon 1/58:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/3

$221

Thu 1/88:16 amBWI - YYZ

2 stops11h 55mMultiple Airlines

Sun 1/113:40 pmYYZ - BWI

1 stop16h 51mMultiple Airlines

Deal found 12/3

$211

Thu 1/811:35 amIAD - YTZ

Nonstop1h 34mMultiple Airlines

Mon 1/123:30 pmYTZ - IAD

1 stop5h 24mMultiple Airlines

Deal found 12/4

$216

Thu 1/88:16 amBWI - YYZ

2 stops11h 55mMultiple Airlines

Tue 1/133:40 pmYYZ - BWI

1 stop27h 23mMultiple Airlines

Deal found 12/3

$220

Thu 1/2911:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Sun 2/18:50 amYTZ - IAD

Nonstop1h 32mPorter Airlines

Deal found 12/3

$219

One-way flights from Washington, D.C. to Ontario
Search for one-way flight options from Washington, D.C. to Ontario. Find affordable one-way fares based on user searches. Data last updated December 4, 2025.

Tue 1/201:00 pmBWI - YYZ

1 stop10h 20mMultiple Airlines

Deal found 12/3

$69

Sun 12/149:43 pmBWI - YYZ

1 stop16h 37mMultiple Airlines

Deal found 12/3

$74

Wed 1/218:00 amBWI - YYZ

2 stops12h 11mMultiple Airlines

Deal found 12/3

$81

Mon 12/159:11 pmBWI - YYZ

1 stop17h 09mMultiple Airlines

Deal found 12/3

$93

Wed 1/141:00 pmBWI - YYZ

1 stop10h 20mMultiple Airlines

Deal found 12/3

$95

Fri 1/169:58 pmBWI - YYZ

2 stops22h 13mMultiple Airlines

Deal found 12/3

$96

Sun 1/115:25 pmBWI - YYZ

1 stop21h 15mMultiple Airlines

Deal found 12/2

$98

Fri 1/211:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Deal found 12/3

$102

Sun 1/188:40 pmDCA - YYZ

Nonstop1h 37mAir Canada

Deal found 12/4

$102

Sat 2/286:00 amDCA - YYZ

2 stops5h 40mAir Canada

Deal found 12/3

$103

Sat 1/179:45 amIAD - YYZ

2 stops7h 51mAir Canada

Deal found 12/3

$103

Thu 1/111:05 amDCA - YTZ

1 stop6h 50mAir Canada

Deal found 12/3

$103

Find flight deals from Washington, D.C. to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$189 (Mytrip)
One-way from	$69 (Kiwi.com)
Popular in	November
Cheapest in	June
Average price	$306
Good round-trip deal	$248 or less
Good one-way deal	$116 or less

Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.

Search Deals

From Washington, D.C. (WAS) to Ontario

Search Deals

One-way flight from Washington, D.C. (WAS) to Ontario

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($37 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from Washington, D.C. (WAS) to Ontario.

Search Deals

Price to beat on a one-way flight from Washington, D.C. (WAS) to Ontario.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 12/17

6:30 pm-8:00 pm

Nonstop1h 30m

Toronto Island

Thu 12/18

8:55 am-10:24 am

Nonstop1h 29m

$213

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Thu 2/5

12:55 pm-6:10 pm

1 stop5h 15m

Toronto Island

Sun 2/8

5:30 pm-9:58 pm

1 stop4h 28m

$225

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 3/13

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Mon 3/16

8:55 am-10:24 am

Nonstop1h 29m

$226

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Thu 1/8

12:55 pm-6:13 pm

1 stop5h 18m

Toronto Island

Mon 1/12

5:30 pm-9:56 pm

1 stop4h 26m

$228

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Fri 2/6

12:55 pm-6:10 pm

1 stop5h 15m

Toronto Island

Thu 2/19

8:30 am-3:33 pm

1 stop7h 03m

$235

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Wed 2/18

12:55 pm-6:10 pm

1 stop5h 15m

Toronto Island

Thu 2/19

8:30 am-3:33 pm

1 stop7h 03m

$235

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Tue 2/3

1:45 pm-5:53 pm

1 stop4h 08m

Toronto Pearson Intl

Sun 2/8

7:45 am-12:00 pm

1 stop4h 15m

$252

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Sun 2/8

8:50 am-1:24 pm

1 stop4h 34m

Toronto Pearson Intl

Tue 2/17

12:11 pm-5:04 pm

1 stop4h 53m

$252

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Thu 1/8

6:05 am-11:20 am

1 stop5h 15m

Toronto Pearson Intl

Tue 1/13

2:25 pm-6:50 pm

1 stop4h 25m

$252

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Wed 1/14

6:05 am-11:20 am

1 stop5h 15m

Toronto Pearson Intl

Mon 1/19

6:06 am-10:13 am

1 stop4h 07m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 60 results

...

Best time to book a flight from Washington, D.C. to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Washington, D.C. 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 Washington, D.C. to Ontario

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

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $91). Flying from Washington, D.C. to Region of Ontario in August is currently the most expensive (average of $171). 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 WAS to ON?

It’s optimal to fly from Washington, D.C. to Region of Ontario at noon. By choosing this option you can save up to 33% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from Washington, D.C. to Region of Ontario?

Travelers seeking maximum savings on their Washington, D.C. to Region of Ontario flight should consider departing on Friday at noon when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. to Region of Ontario

The most flights from WAS to CAON are scheduled on a Tuesday (30 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (28 on average).

How much does it cost to fly round-trip from Washington, D.C. to Region of Ontario?

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with Porter Airlines, Air Transat, and United Airlines from Washington, D.C. to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

395 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Porter Airlines

8.0

Very good

395 reviews

Porter Airlines

8.0

Very good

395 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Air Transat

7.8

Good

480 reviews

Porter Airlines

8.0

Very good

395 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

United Airlines

7.4

Good

9,066 reviews

Porter Airlines

8.0

Very good

395 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

American Airlines

7.2

Good

11,047 reviews

Porter Airlines

8.0

Very good

395 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Air Canada

7.1

Good

10,500 reviews

Porter Airlines

8.0

Very good

395 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Related info for your journey

How long is the flight from Washington, D.C. to Region of Ontario?
A quick flight from Washington, D.C. to Region of Ontario can take about 1h 30m. Porter Airlines provides one of the quickest options available for as low as $213. The distance from Washington, D.C. to Region of Ontario is about 339 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Washington, D.C. to Region of Ontario one-way?
$79 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Porter Airlines and Delta, with prices starting from $80 and $91, respectively.
What are the most popular routes from Washington, D.C. to Region of Ontario?
The most popular flight routes from Washington, D.C. to Region of Ontario are Washington, D.C. Dulles Intl - Toronto Pearson Intl, Washington, D.C. Reagan-National - Toronto Pearson Intl and Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl.
What are the most reliable airlines from Washington, D.C. to Region of Ontario?
Before booking your flight to Region of Ontario from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Jazz (85%), United Airlines (79%), Air Canada( 79%).
What are the cheapest flights from Washington, D.C. to Region of Ontario?
On average you can expect to pay $730 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $97 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at $236.
Can I find deals for flights from Washington, D.C. to Ontario that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Ontario.
Can I find deals for business class flights from Washington, D.C. to Ontario?
Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Region of Ontario?
Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $91). Flying from Washington, D.C. to Region of Ontario in August is currently the most expensive (average of $171). 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

Top 7 airlines flying from Washington, D.C. to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Porter Airlines	Cheapest$54	Average$332	FlexibilityNo cancel fee	On-time52%
United Airlines	Cheapest$127	Average$398	FlexibilityNo cancel fee	On-time69%
Air Transat	Cheapest$176	Average$245	FlexibilityNo cancel fee	On-time50%
Air Canada	Cheapest$182	Average$387	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$255	Average$336	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$261	Average$376	FlexibilityNo cancel fee	On-time71%
WestJet	Cheapest$349	Average$494	FlexibilityNo cancel fee	On-time60%

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$69+ Cheap flights from Washington, D.C. (WAS) 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Washington, D.C. to Ontario

Cheapest flights from Washington, D.C. to OntarioExplore the most affordable flight options available from Washington, D.C. to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

Explore the most affordable flight options available from Washington, D.C. to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

Find flight deals from Washington, D.C. to Ontario

Keep the following information in mind while searching for Washington, D.C. to Ontario flight deals. Data was last updated December 4, 2025.

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Best time to book a flight from Washington, D.C. to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Washington, D.C. with our price prediction graph.

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Everything you need to know about your flight from Washington, D.C. to Ontario

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

What is the cheapest time of day to fly from WAS to ON?

Find hourly flight availability from Washington, D.C. 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 December 4, 2025.

What is the cheapest day to fly from Washington, D.C. to Region of Ontario?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Ontario. Price data was last updated on December 16, 2024.

Weekly flight availability from Washington, D.C. to Region of Ontario

How much does it cost to fly round-trip from Washington, D.C. to Region of Ontario?

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with Porter Airlines, Air Transat, and United Airlines from Washington, D.C. to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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 Washington, D.C. to Region of Ontario?

What are the cheapest airlines to fly from Washington, D.C. to Region of Ontario one-way?

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

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

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

Can I find deals for flights from Washington, D.C. to Ontario that include hotel bookings?

How can I find direct flights from Washington, D.C. to Ontario?

Can I find deals for business class flights from Washington, D.C. to Ontario?

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

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Alternative routes for Washington, D.C. to Ontario

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Top 7 airlines flying from Washington, D.C. to Ontario

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Cheapest flights from Washington, D.C. to Ontario
Explore the most affordable flight options available from Washington, D.C. to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.