$82+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YYZ
Jul 8 — Jul 151
1 adult, Economy
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Find cheap flights from Washington, D.C. to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap 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 July 3, 2025.
Round-trip from | $178 (Kiwi.com) |
|---|---|
One-way from | $82 (SmartFares) |
Popular in | February |
Cheapest in | June |
Average price | $287 |
Good round-trip deal | $208 or less |
Good one-way deal | $101 or less |
Find 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 July 3, 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 July 3, 2025.
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/224:10 pmIAD - YTZ
Nonstop1h 33mPorter Airlines
Thu 7/241:25 pmYTZ - IAD
Nonstop1h 31mPorter Airlines
Deal found 7/2![Porter Airlines logo]()
$178
This Mytrip deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/156:59 amDCA - YYZ
Nonstop1h 34mAir Canada
Fri 8/226:15 amYYZ - DCA
1 stop4h 03mAir Canada
Deal found 7/2![Air Canada logo]()
$179
This Flightnetwork deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1710:20 amIAD - YYZ
Nonstop1h 35mAir Canada
Sun 8/248:10 amYYZ - IAD
Nonstop1h 27mAir Canada
Deal found 7/2![Air Canada logo]()
$179
This Flightnetwork deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1512:55 pmDCA - YTZ
1 stop5h 50mAir Canada
Fri 8/2210:25 amYTZ - DCA
1 stop5h 23mAir Canada
Deal found 7/2![Air Canada logo]()
$180
This Flightnetwork deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/164:10 pmIAD - YTZ
Nonstop1h 33mMultiple Airlines
Sat 8/231:25 pmYTZ - IAD
Nonstop1h 31mMultiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$184
This American Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/156:10 pmDCA - YYZ
1 stop4h 55mAmerican Airlines
Fri 7/257:15 amYYZ - DCA
1 stop5h 40mAmerican Airlines
Deal found 7/3![American Airlines logo]()
$236
This Mytrip deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/162:25 pmIAD - YYZ
Nonstop1h 36mMultiple Airlines
Sat 8/234:30 pmYYZ - IAD
2 stops18h 14mMultiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$251
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:00 amIAD - YYZ
1 stop3h 22mDelta
Mon 9/224:12 pmYYZ - IAD
1 stop6h 54mDelta
Deal found 7/3![Delta logo]()
$253
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/83:40 pmIAD - YYZ
Nonstop1h 39mUnited Airlines
Mon 8/1812:45 pmYYZ - IAD
Nonstop1h 34mUnited Airlines
Deal found 6/30![United Airlines logo]()
$262
This Mytrip deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/126:25 amBWI - YYZ
1 stop7h 40mMultiple Airlines
Tue 8/196:30 amYYZ - BWI
1 stop8h 16mMultiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2211:35 amIAD - YUL
1 stop4h 25mPorter Airlines
Tue 8/2610:45 amYUL - IAD
1 stop4h 11mPorter Airlines
Deal found 7/1![Porter Airlines logo]()
$267
This Booking.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:00 amDCA - YUL
Nonstop1h 45mAir Canada
Sat 8/238:00 pmYUL - DCA
Nonstop1h 48mAir Canada
Deal found 7/2![Air Canada logo]()
$267
Cheapflights Fare Finder
Customize your flight search to find flights from Washington, D.C. 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 2,558,603 searches. Data last updated July 3, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Ontario that are best for you.
Fly from
Washington, D.C.
Fly to
Ontario
Route
Depart
Return
Price
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
Tue 7/22
4:10 pm-5:43 pm
Nonstop1h 33m
Toronto Island
Thu 7/24
1:25 pm-2:56 pm
Nonstop1h 31m
$178
Washington, D.C.Toronto
DCA - YYZ
DCAYYZ
Washington, D.C. Reagan-National
Fri 8/15
6:59 am-8:33 am
Nonstop1h 34m
Toronto Pearson Intl
Fri 8/22
6:15 am-10:18 am
1 stop4h 03m
$179
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Sun 8/17
10:20 am-11:55 am
Nonstop1h 35m
Toronto Pearson Intl
Sun 8/24
8:10 am-9:37 am
Nonstop1h 27m
$179
Washington, D.C.Toronto
DCA - YTZ
DCAYTZ
Washington, D.C. Reagan-National
Fri 8/15
12:55 pm-6:45 pm
1 stop5h 50m
Toronto Island
Fri 8/22
10:25 am-3:48 pm
1 stop5h 23m
$180
Washington, D.C.Toronto
IAD - YTZ
IADYTZ
Washington, D.C. Dulles Intl
Sat 8/16
4:10 pm-5:43 pm
Nonstop1h 33m
Toronto Island
Sat 8/23
1:25 pm-2:56 pm
Nonstop1h 31m
$184
Washington, D.C.Toronto
DCA - YYZ
DCAYYZ
Washington, D.C. Reagan-National
Tue 7/15
6:10 pm-11:05 pm
1 stop4h 55m
Toronto Pearson Intl
Wed 7/16
7:35 am-11:32 am
1 stop3h 57m
$236
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Sat 8/16
2:25 pm-4:01 pm
Nonstop1h 36m
Toronto Pearson Intl
Sat 8/23
4:30 pm-10:44 am
2 stops18h 14m
$251
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Tue 9/16
6:00 am-9:22 am
1 stop3h 22m
Toronto Pearson Intl
Mon 9/22
4:12 pm-11:06 pm
1 stop6h 54m
$253
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Sun 8/3
8:22 am-10:04 am
Nonstop1h 42m
Toronto Pearson Intl
Thu 8/14
10:05 am-11:39 am
Nonstop1h 34m
$263
BaltimoreToronto
BWI - YYZ
BWIYYZ
Baltimore/Washington
Tue 8/12
6:25 am-2:05 pm
1 stop7h 40m
Toronto Pearson Intl
Tue 8/19
6:30 am-2:46 pm
1 stop8h 16m
$264
Showing 1-10 of 57 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, January is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $243). Flying from Washington, D.C. to Region of Ontario in August is currently the most expensive (average of $348). 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?
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 July 3, 2025.
When flying from Washington, D.C. to Region of Ontario, 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 Washington, D.C. to Region of Ontario
Explore weekly flight availability from Washington, D.C. 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 July 3, 2025.
The most flights from WAS to CAON are scheduled on a Wednesday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).
How much does it cost to fly round-trip from Washington, D.C. 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 July 3, 2025.
Peruse reviews from past customers who have flown with Porter Airlines, Delta, and Air Transat 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.
Entertainment
7.0
Overall
8.0
Comfort
8.1
Crew
8.7
Boarding
8.2
Food
7.7
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Overall
8.0
Comfort
8.1
Crew
8.7
Boarding
8.2
Food
7.7
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Overall
8.0
Comfort
8.1
Crew
8.7
Boarding
8.2
Food
7.7
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Overall
8.0
Comfort
8.1
Crew
8.7
Boarding
8.2
Food
7.7
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Overall
8.0
Comfort
8.1
Crew
8.7
Boarding
8.2
Food
7.7
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Overall
8.0
Comfort
8.1
Crew
8.7
Boarding
8.2
Food
7.7
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
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.
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Alternative routes for Washington, D.C. to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from Washington, D.C. to Ontario
Discover the top 7 airlines that operate flights from Washington, D.C. 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 2,558,603 searches. Data last updated July 3, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$103 | Average$332 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$113 | Average$433 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$127 | Average$395 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$149 | Average$366 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$169 | Average$310 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$242 | Average$326 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$519 | FlexibilityNo cancel fee | On-time60% |