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C$ 133+ Cheap flights from Ontario

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — YVR
18 May — 25 May1
1 adult
1 adult, Economy, 0 bags

Find flights from Ontario within your budget

 
Find flights departing from Ontario that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 18 April 2026. In the last 7 days, Cheapflights users made a total of 629,999 searches

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 6/5

6:00 a.m.-8:50 a.m.

Nonstop2h 50m

Seattle/Tacoma Intl

Sat 16/5

12:30 p.m.-3:09 p.m.

Nonstop2h 39m

C$ 283

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Fri 8/5

3:26 p.m.-6:17 p.m.

Nonstop2h 51m

Seattle/Tacoma Intl

Sun 10/5

7:05 a.m.-9:45 a.m.

Nonstop2h 40m

C$ 297

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 7/5

10:39 a.m.-1:30 p.m.

Nonstop2h 51m

Seattle/Tacoma Intl

Sun 10/5

7:05 a.m.-9:45 a.m.

Nonstop2h 40m

C$ 297

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 3/6

6:45 a.m.-9:47 a.m.

Nonstop3h 02m

Seattle/Tacoma Intl

Fri 5/6

2:30 p.m.-5:08 p.m.

Nonstop2h 38m

C$ 338

OntarioVancouver

ONT - YVR

ONTYVR

Ontario

Mon 17/8

1:44 p.m.-8:59 p.m.

1 stop7h 15m

Vancouver Intl

Sat 22/8

7:00 a.m.-12:12 p.m.

1 stop5h 12m

C$ 423

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Mon 11/5

7:59 p.m.-10:50 p.m.

Nonstop2h 51m

Seattle/Tacoma Intl

Thu 14/5

9:22 p.m.-11:58 p.m.

Nonstop2h 36m

C$ 458

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 4/7

1:00 p.m.-6:40 p.m.

1 stop5h 40m

Seattle/Tacoma Intl

Sat 18/7

7:15 a.m.-12:08 p.m.

1 stop4h 53m

C$ 461
Quickest round-trip

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 8/7

5:54 p.m.-8:34 p.m.

Nonstop2h 40m

Seattle/Tacoma Intl

Sun 12/7

10:25 a.m.-1:09 p.m.

Nonstop2h 44m

C$ 461

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Mon 11/5

1:29 p.m.-6:48 p.m.

1 stop5h 19m

Seattle/Tacoma Intl

Thu 14/5

8:25 a.m.-11:12 a.m.

Nonstop2h 47m

C$ 465

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 18/7

4:55 p.m.-1:10 a.m.

2 stops8h 15m

Seattle/Tacoma Intl

Tue 21/7

6:30 a.m.-11:30 a.m.

1 stop5h 00m

C$ 468

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/4

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Ontario

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

Travel insights for flights from Ontario

Get recent, data-driven insights about flights from Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario?

Currently, February is the cheapest month in which you can book a flight from Ontario (average of C$ 400). Flying from Ontario in December will prove the most costly (average of C$ 820). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What are popular destinations to fly to from Ontario?

From Ontario you can expect to find greater availability for the following destinations: Atlanta (111 flights per day), Seattle (107 flights per day) and Dallas (107 flights per day).

San Francisco
San Francisco
From C$ 301
San Salvador El Salvador Intl
San Salvador El Salvador Intl
From C$ 1,163
Taipei City Taiwan Taoyuan Intl
Taipei City Taiwan Taoyuan Intl
From C$ 1,774
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From C$ 60

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Las Vegas Harry Reid Intl, with prices starting at C$ 60. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From C$ 60
San Jose
San Jose
From C$ 107
Portland
Portland
From C$ 129
Salt Lake City
Salt Lake City
From C$ 226

Browse thousands of different options on Cheapflights for your next trip

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Related info for your journey

Access useful and relevant information related to your journey from Ontario. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 18 April 2026.

  • What are the most popular destinations to fly to from Ontario?

    This month, the top selected destinations from Ontario are Las Vegas, Dallas/Fort Worth Airport, Denver. Throughout the year, Las Vegas, Dallas/Fort Worth Airport, Denver are some of the top choices made by users flying from Ontario.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as C$ 60 to Las Vegas (prices may vary depending on the airline and departure time). On average, users have booked flights for C$ 593 to fly from Ontario.

  • What is the cheapest premium economy flight from Ontario?

    Options for some of the cheapest premium economy flights from Ontario we have found on Cheapflights are as follows:
    Fly from Ontario to Houston George Bush Intcntl Airport starting at C$ 1,196

  • What is the cheapest month to fly from Ontario?

    At the present moment the cheapest month to fly from Ontario is currently February; with December being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Ontario?

    Check out the cheapest flights from Ontario to embark to:
    Travel from Ontario to Vancouver from C$ 387 round trip
    Travel from Ontario to Toronto from C$ 393 round trip
    Travel from Ontario to Calgary from C$ 479 round trip
    Travel from Ontario to Montreal from C$ 606 round trip

  • How does Cheapflights help users find flights from Ontario?

    Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

  • Why should you use Cheapflights to find cheap flight tickets from Ontario?

    Cheapflights helps you find that perfect flight from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

  • Can Cheapflights find flights from Ontario with no change fees?

    Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario, users can toggle the no change fees filter when performing a flight search.

  • Can Cheapflights notify me if prices for flights from Ontario become cheaper?

    Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

See more FAQs

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?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ontario with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ontario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

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