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Find cheap United Airlines flights to Ontario

ICT — YYZ
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find United Airlines flight deals to Ontario

Cheapest United Airlines flights from USA to Ontario
Explore the most affordable United Airlines flight options available from USA to Ontario. Find the lowest fares with prices last updated on July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/26. 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.
Wed 8/2610:00 am
EWR
-
YUL
1 stop4h 40m
United Airlines
Wed 8/264:55 pm
YUL
-
EWR
1 stop15h 19m
United Airlines
Deal found 7/26$282
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 8/228:17 pm
EWR
-
YUL
Nonstop1h 49m
United Airlines
Sun 8/306:00 am
YUL
-
EWR
Nonstop1h 38m
United Airlines
Deal found 7/26$286
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 8/2610:00 am
EWR
-
YUL
1 stop4h 40m
United Airlines
Sun 8/306:00 am
YUL
-
EWR
Nonstop1h 38m
United Airlines
Deal found 7/27$296

Flights to Ontario with United Airlines at a glance

Find detailed information about United Airlines flights from USA to Ontario. Explore the options provided by United Airlines to plan your journey from USA to Ontario. Data last updated July 27, 2026.

Popular in

June

Cheapest in

January

Average price

$471

Round-trip from

$282

One-way from

$117
Highest demand for flights to Ontario with United Airlines; 12% potential price increase.
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Best time to find cheap flights to Ontario with United Airlines; 1% potential price drop.
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Average price for flights to Ontario with United Airlines (round-trip).
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United Airlines
  • United Airlines
  • 8/26-8/26
  • 2 total stops
  • 19h 59m total
  • USA to Ontario
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United Airlines
  • United Airlines
  • 8/21
  • Nonstop
  • 1h 49m total
  • USA to Ontario
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Cheapflights Insights

Find cheap United Airlines flights to Ontario

How long is the flight to Ontario with United Airlines?

On average, United Airlines flights from the United States to Ontario take 2 hours 13 minutes. Flights to Ontario from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

United Airlines weekly flight availability to Ontario

The most flights to Ontario operated by United Airlines are scheduled on a Sunday (153 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (131 on average).

When is the best time to book a flight to Ontario with United Airlines?

The best time to book a flight to Ontario with United Airlines is 71 days before departure. On average, fares are higher if you book 2 days before departure.

FAQs for United Airlines flights to Ontario

  • Is United Airlines the cheapest airline for a flight to Ontario?

    According to our data Frontier offers the lowest average return price for flights to Ontario; but the fare you pay will vary depending on your time and date of travel. Use Cheapflights to compare your options before booking your flight.

  • Do other airlines fly to Ontario?

    Airlines such as Air Canada, Porter Airlines and Delta also operate flights to Ontario. Check Cheapflights to compare fares from United Airlines and these other carriers.

  • What is the average cost of a flight to Ontario with United Airlines?

    The typical United Airlines flight to Ontario averages around $564 for a return flight and around $337 for a one-way ticket.

Reviews from United Airlines flights to Ontario

See what other users thought of their United Airlines experience.
United Airlines
7.4
Good
10,000 reviews
Overview

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

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