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 34m. Porter Airlines provides one of the quickest options available for as low as $214. 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 $559 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $100 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at $241.

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: ANA (74%), Jazz (73%), United Airlines( 71%).

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.

$58+ Flights from Washington, D.C. to Ontario

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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 23, 2025.

Wed 12/3111:40 amIAD - YUL

1 stop5h 35mPorter Airlines

Mon 1/56:45 amYUL - IAD

1 stop3h 34mPorter Airlines

Deal found 12/21

$385

Sun 12/286:30 pmIAD - YUL

1 stop4h 15mPorter Airlines

Mon 1/56:45 amYUL - IAD

1 stop3h 34mPorter Airlines

Deal found 12/21

$390

Mon 12/2911:40 amIAD - YUL

1 stop6h 05mPorter Airlines

Mon 1/56:45 amYUL - IAD

1 stop3h 34mPorter Airlines

Deal found 12/21

$393

Mon 12/298:40 pmDCA - YYZ

Nonstop1h 37mAir Canada

Thu 1/17:20 amYYZ - DCA

Nonstop1h 35mAir Canada

Deal found 12/22

$406

Tue 12/309:58 pmIAD - YOW

1 stop19h 15mMultiple Airlines

Thu 1/84:20 pmYOW - IAD

1 stop15h 35mMultiple Airlines

Deal found 12/22

$428

Wed 12/319:45 amIAD - YUL

Nonstop1h 53mAir Canada

Wed 1/77:00 pmYUL - IAD

Nonstop1h 54mAir Canada

Deal found 12/21

$451

Wed 12/316:00 amDCA - YUL

Nonstop1h 45mAir Canada

Wed 1/78:00 pmYUL - DCA

Nonstop1h 56mAir Canada

Deal found 12/21

$451

Mon 12/295:10 pmIAD - YYZ

1 stop4h 35mAir Canada

Mon 1/56:55 pmYYZ - IAD

Nonstop1h 34mAir Canada

Deal found 12/22

$452

Tue 12/309:00 amIAD - YYZ

Nonstop1h 29mAir Canada

Mon 1/56:55 pmYYZ - IAD

Nonstop1h 34mAir Canada

Deal found 12/22

$456

Tue 12/308:40 pmDCA - YYZ

Nonstop1h 37mAir Canada

Mon 1/57:20 amYYZ - DCA

Nonstop1h 35mAir Canada

Deal found 12/22

$469

Wed 12/3111:40 amIAD - YUL

1 stop5h 35mMultiple Airlines

Wed 1/76:00 amYUL - IAD

1 stop10h 46mMultiple Airlines

Deal found 12/21

$474

Mon 12/228:40 amIAD - YYZ

2 stops53h 33mMultiple Airlines

Fri 1/97:10 amYYZ - IAD

1 stop25h 58mMultiple Airlines

Deal found 12/21

$474

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 23, 2025.

Fri 1/1611:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Wed 1/218:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/20

$214

Thu 2/512:55 pmDCA - YTZ

1 stop5h 15mAir Canada

Thu 2/129:30 amYTZ - DCA

1 stop6h 03mAir Canada

Deal found 12/22

$239

Wed 2/41:00 pmBWI - YYZ

1 stop10h 20mMultiple Airlines

Wed 2/112:20 pmYYZ - BWI

1 stop8h 02mMultiple Airlines

Deal found 12/21

$242

Tue 1/208:20 amIAD - YYZ

1 stop7h 42mUnited Airlines

Tue 1/207:40 pmYYZ - IAD

Nonstop1h 45mUnited Airlines

Deal found 12/21

$261

Wed 1/289:00 amDCA - YUL

1 stop7h 55mWestJet

Thu 1/291:02 pmYUL - DCA

1 stop5h 55mWestJet

Deal found 12/22

$360

Wed 2/411:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Wed 2/118:50 amYTZ - IAD

Nonstop1h 32mPorter Airlines

Deal found 12/21

$220

Sun 1/2511:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Sun 2/18:50 amYTZ - IAD

Nonstop1h 32mPorter Airlines

Deal found 12/22

$220

Mon 2/21:05 pmBWI - YYZ

1 stop11h 09mMultiple Airlines

Thu 2/57:15 amYYZ - BWI

2 stops10h 12mMultiple Airlines

Deal found 12/20

$244

Wed 2/412:55 pmDCA - YTZ

1 stop5h 15mAir Canada

Wed 2/1110:45 amYTZ - DCA

1 stop4h 48mAir Canada

Deal found 12/21

$245

Fri 2/136:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Sun 2/153:45 pmYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/21

$220

Sun 1/1810:06 pmIAD - YYZ

Nonstop1h 40mUnited Airlines

Tue 1/207:40 pmYYZ - IAD

Nonstop1h 45mUnited Airlines

Deal found 12/21

$275

Fri 1/306:20 amBWI - YYZ

1 stop8h 20mMultiple Airlines

Sun 2/811:15 amYYZ - BWI

1 stop12h 44mMultiple Airlines

Deal found 12/22

$256

Thu 2/511:40 amIAD - YTZ

Nonstop1h 30mPorter Airlines

Sun 2/153:45 pmYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/22

$222

Sat 3/286:50 pmDCA - YYZ

Nonstop1h 37mAir Canada

Mon 3/309:10 pmYYZ - DCA

Nonstop1h 33mAir Canada

Deal found 12/22

$275

Mon 2/210:06 pmIAD - YYZ

Nonstop1h 40mUnited Airlines

Sun 2/87:40 pmYYZ - IAD

Nonstop1h 45mUnited Airlines

Deal found 12/22

$275

Sat 1/244:44 pmBWI - YYZ

1 stop7h 27mMultiple Airlines

Sat 1/317:15 amYYZ - BWI

2 stops11h 35mMultiple Airlines

Deal found 12/20

$259

Mon 1/1911:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Wed 1/288:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/20

$225

Mon 1/196:59 amDCA - YYZ

Nonstop1h 36mAir Canada

Sun 1/259:00 pmYYZ - DCA

Nonstop1h 35mAir Canada

Deal found 12/20

$275

Thu 2/1910:09 pmIAD - YYZ

Nonstop1h 37mUnited Airlines

Sun 2/227:40 pmYYZ - IAD

Nonstop1h 41mUnited Airlines

Deal found 12/21

$275

Mon 1/266:15 amBWI - YYZ

2 stops13h 56mMultiple Airlines

Fri 1/307:10 amYYZ - BWI

1 stop7h 56mMultiple Airlines

Deal found 12/22

$259

Thu 1/2211:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Mon 1/268:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/21

$225

Sat 2/146:05 amDCA - YUL

1 stop7h 35mWestJet

Wed 2/187:00 amYUL - DCA

1 stop11h 29mWestJet

Deal found 12/22

$363

Thu 2/126:59 amDCA - YYZ

Nonstop1h 36mAir Canada

Sun 2/159:00 pmYYZ - DCA

Nonstop1h 35mAir Canada

Deal found 12/23

$275

Sun 2/110:06 pmIAD - YYZ

Nonstop1h 40mUnited Airlines

Sun 2/810:00 amYYZ - IAD

Nonstop1h 48mUnited Airlines

Deal found 12/22

$275

Fri 1/911:30 amBWI - YYZ

1 stop7h 46mMultiple Airlines

Wed 1/142:15 pmYYZ - BWI

1 stop17h 08mMultiple Airlines

Deal found 12/20

$262

Thu 1/2211:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Thu 1/298:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/20

$225

Thu 1/226:59 amDCA - YYZ

Nonstop1h 36mAir Canada

Sat 1/246:10 pmYYZ - DCA

Nonstop1h 35mAir Canada

Deal found 12/20

$275

Thu 1/2912:35 pmIAD - YYZ

Nonstop1h 39mUnited Airlines

Sun 2/87:40 pmYYZ - IAD

Nonstop1h 45mUnited Airlines

Deal found 12/22

$275

Sat 4/116:00 amDCA - YUL

1 stop17h 13mWestJet

Thu 4/166:00 amYUL - DCA

1 stop5h 29mWestJet

Deal found 12/23

$375

Thu 2/266:08 pmBWI - YYZ

2 stops20h 12mMultiple Airlines

Sun 3/18:30 pmYYZ - BWI

1 stop12h 11mMultiple Airlines

Deal found 12/22

$263

Last-minute flights from Washington, D.C. to Ontario
Discover last-minute flight deals from Washington, D.C. to Ontario. Data last updated December 23, 2025 and is based on user searches.

Mon 1/1211:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Thu 1/158:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/22

$220

Fri 1/1611:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Wed 1/218:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/20

$214

Fri 1/1611:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Mon 1/198:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/22

$221

Fri 1/1611:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Sun 1/188:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/22

$222

Fri 1/1611:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Thu 1/298:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/20

$223

Sun 1/1811:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Sun 1/258:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/21

$225

Mon 1/191:00 pmBWI - YYZ

1 stop10h 20mMultiple Airlines

Thu 1/227:10 amYYZ - BWI

1 stop9h 32mMultiple Airlines

Deal found 12/21

$208

Wed 1/2111:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Wed 1/288:50 amYTZ - IAD

Nonstop1h 29mPorter Airlines

Deal found 12/22

$224

Wed 1/211:00 pmBWI - YYZ

1 stop10h 20mMultiple Airlines

Wed 1/285:15 pmYYZ - BWI

1 stop19h 12mMultiple Airlines

Deal found 12/22

$225

Thu 1/225:37 pmBWI - YYZ

1 stop21h 03mMultiple Airlines

Mon 1/265:15 pmYYZ - BWI

1 stop23h 55mMultiple Airlines

Deal found 12/21

$210

Thu 1/225:37 pmBWI - YYZ

1 stop21h 03mMultiple Airlines

Sun 1/258:30 pmYYZ - BWI

1 stop12h 01mMultiple Airlines

Deal found 12/21

$215

Thu 1/229:26 amBWI - YYZ

1 stop13h 54mMultiple Airlines

Wed 1/283:40 pmYYZ - BWI

1 stop7h 56mMultiple Airlines

Deal found 12/20

$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 23, 2025.

Tue 2/177:54 pmBWI - YYZ

1 stop18h 26mMultiple Airlines

Deal found 12/21

$58

Wed 2/46:20 amBWI - YYZ

1 stop17h 00mMultiple Airlines

Deal found 12/21

$62

Thu 2/55:37 pmBWI - YYZ

1 stop21h 03mMultiple Airlines

Deal found 12/22

$70

Wed 1/286:20 amBWI - YYZ

1 stop17h 00mMultiple Airlines

Deal found 12/21

$71

Sun 1/184:47 pmBWI - YYZ

1 stop30h 33mMultiple Airlines

Deal found 12/22

$74

Thu 1/85:25 pmBWI - YYZ

1 stop21h 15mMultiple Airlines

Deal found 12/22

$79

Thu 1/295:37 pmBWI - YYZ

1 stop21h 03mMultiple Airlines

Deal found 12/23

$87

Tue 1/201:00 pmBWI - YYZ

1 stop10h 20mMultiple Airlines

Deal found 12/21

$96

Tue 1/271:00 pmBWI - YYZ

1 stop10h 20mMultiple Airlines

Deal found 12/20

$97

Thu 1/1511:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Deal found 12/22

$100

Mon 1/1211:35 amIAD - YTZ

Nonstop1h 34mPorter Airlines

Deal found 12/22

$101

Sun 4/266:30 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

Deal found 12/21

$102

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

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$208 (Kiwi.com)
One-way from	$58 (Kiwi.com)
Popular in	November
Cheapest in	June
Average price	$297
Good round-trip deal	$243 or less
Good one-way deal	$123 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. 7% potential increase in price ($22 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($4 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

Fri 1/16

11:35 am-1:09 pm

Nonstop1h 34m

Toronto Island

Wed 1/21

8:50 am-10:19 am

Nonstop1h 29m

$214

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 2/4

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Wed 2/11

8:50 am-10:22 am

Nonstop1h 32m

$220

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sun 1/25

11:35 am-1:09 pm

Nonstop1h 34m

Toronto Island

Sun 2/1

8:50 am-10:22 am

Nonstop1h 32m

$220

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 2/13

6:30 pm-8:00 pm

Nonstop1h 30m

Toronto Island

Sun 2/15

3:45 pm-5:14 pm

Nonstop1h 29m

$220

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 2/5

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 2/15

3:45 pm-5:14 pm

Nonstop1h 29m

$222

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 1/19

11:35 am-1:09 pm

Nonstop1h 34m

Toronto Island

Wed 1/28

8:50 am-10:19 am

Nonstop1h 29m

$225

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 1/22

11:35 am-1:09 pm

Nonstop1h 34m

Toronto Island

Mon 1/26

8:50 am-10:19 am

Nonstop1h 29m

$225

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 1/22

11:35 am-1:09 pm

Nonstop1h 34m

Toronto Island

Thu 1/29

8:50 am-10:19 am

Nonstop1h 29m

$225

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

Thu 2/12

9:30 am-3:33 pm

1 stop6h 03m

$239

BaltimoreToronto

BWI - YYZ

BWIYYZ

Baltimore/Washington

Wed 2/4

1:00 pm-11:20 pm

1 stop10h 20m

Toronto Pearson Intl

Wed 2/11

2:20 pm-10:22 pm

1 stop8h 02m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

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 $94). 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 Monday (30 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (22 on average).

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

399 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

399 reviews

Porter Airlines

8.0

Very good

399 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

484 reviews

Porter Airlines

8.0

Very good

399 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

9,106 reviews

Porter Airlines

8.0

Very good

399 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

11,052 reviews

Porter Airlines

8.0

Very good

399 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

10,551 reviews

Porter Airlines

8.0

Very good

399 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 34m. Porter Airlines provides one of the quickest options available for as low as $214. 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: ANA (74%), Jazz (73%), United Airlines( 71%).
What are the cheapest flights from Washington, D.C. to Region of Ontario?
On average you can expect to pay $559 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $100 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at $241.
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 $94). 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$395	FlexibilityNo cancel fee	On-time69%
Air Transat	Cheapest$176	Average$245	FlexibilityNo cancel fee	On-time50%
Air Canada	Cheapest$187	Average$380	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$255	Average$330	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$261	Average$376	FlexibilityNo cancel fee	On-time71%
WestJet	Cheapest$349	Average$490	FlexibilityNo cancel fee	On-time60%

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$58+ 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 2/17. 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 23, 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 23, 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 23, 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 23, 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

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 23, 2025.