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Cheap Flights to Ontario - Compare Airfares, Flight Times & Airlines

Travelers can choose daily flight options to Ontario, with flexible choices to suit different travel needs. Browse one-way fares from $107.4, round-trip fares from $196.99, and other affordable options across a range of budgets. Flights to Ontario operate regularly across major airlines, with nonstop and connecting services available throughout the week. Compare fares, review schedules, and book the right flight to Ontario for your upcoming trip.

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Cheap Flight Deals to Ontario

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One Way Round Trip
BOI Boise Tue, Aug 25
LAX Los Angeles
from $107.4
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PDX Portland Wed, Aug 12
LAX Los Angeles
from $121.98
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IND Indianapolis Sat, Sep 5
LAX Los Angeles
from $136.99
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WAS Washington DC Thu, Aug 6
LAX Los Angeles
from $136.99
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CHI Chicago Wed, Jul 22
LAX Los Angeles
from $142.99
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NYC New York City Wed, Aug 12
LAX Los Angeles
from $150.15
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HNL Honolulu Tue, Dec 15
LAX Los Angeles
from $204.75
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MKC Kansas City Wed, Dec 30
LAX Los Angeles
from $302.92
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*All fares above were last found on:
Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions. 202606~Ref:xzRotnlbokq1f1vh-obQoA

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Book Flights to Ontario, California

Don't Miss These Ontario Attractions
A vacation in Ontario is the best way to bust the stress out of your life. From beautiful beaches, amusement parks to natural wonders, the city offers everything a traveler could ask for. The eternal romantics should spend some time at the Wasaga Beach or simply marvel at the beauty of the majestic Niagara Falls. CN Tower is one of the most famous attractions in the city, offering skyline views of Ontario from the top. For art lovers, Royal Ontario Museum is a must visit, offering more than 6 million objects related to art and archaeology. Don't forget to take your kids to the Centreville Amusement Park which features about 3 exciting rides for your entertainment.
Book Your Flight to ONT with CheapOair
Booking your flight with CheapOair helps ensure that you'll be getting the cheapest available tickets to Ontario. With our Best Price Guarantee, you know that we can provide you with the fantastic low prices on flights to Ontario, and with our 24/7 customer service you can always reach us during your trip.
When to Book Your Ontario Flight?
June to August is the perfect time to visit Ontario with the temperatures averaging in the low 8s. With cool breeze and moderate temperatures, its the perfect season to explore the beauty of natural wonders like the Niagara Falls. Winter is considered the off-season with temperatures going below the freezing point. If you can survive the cold, then winter is the perfect time to get good discounts on the airfare and the hotel stays.
Ontario Airports
Lester B. Pearson International Airport is the main airport that serves the city of Ontario. The airport offers numerous amenities and provides excellent ground transportation choices for your comfort. Planning is the best way you can get the cheapest flights to Ontario. So book your air tickets at least three weeks in advance if you want to save some big bucks.

Flights to Ontario

Flights from Ontario

Airports Near Ontario

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Better deals are one call away Call us Say and save Expires Jun 30, 2026. Where applicable discount applies to service fees for qualified airline tickets. Amount of service fee discount varies: maximum savings of $10 per person applied to bookings from one (1) traveler up to five (5) travelers; the maximum discount applied is $50. Promo Code and Instant Savings offers can be combined up to the amount of our service fees but cannot be used or combined with any other coupons, promotions or special offers. May be withdrawn at any time without notice. Promo code only applicable for bookings created over the phone through our call center.