ONT

$756 Find Cheap Flights to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 20/5. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
Travellers love KAYAK
41 299 237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
$1,220
United Airlines
Sun 19/4Thu 21/5
MEL - ONT • 1 stop
Cheapest one-way flight
$756
United Airlines
Wed 20/5
MEL - ONT • 1 stop
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Ontario

Sun, 19 Apr - Thu, 21 May
United Airlines Logo
10:55 - 12:20
MEL
-
ONT
18h 25m
1 stop
United Airlines Logo
05:00 - 08:15
ONT
-
MEL
34h 15m
2 stops
$1,220United Airlines
Sun, 17 May - Sun, 24 May
United Airlines Logo
10:55 - 12:22
MEL
-
ONT
18h 27m
1 stop
United Airlines Logo
13:50 - 08:15
ONT
-
MEL
25h 25m
1 stop
$1,221United Airlines
Thu, 30 Apr - Wed, 13 May
Multiple Airlines Logo
20:45 - 21:10
SYD
-
ONT
17h 25m
1 stop
Multiple Airlines Logo
09:40 - 18:50
ONT
-
SYD
40h 10m
1 stop
$1,263Multiple Airlines
Thu, 30 Apr - Wed, 13 May
Multiple Airlines Logo
20:45 - 21:10
SYD
-
ONT
17h 25m
1 stop
Multiple Airlines Logo
09:40 - 18:50
ONT
-
SYD
40h 10m
1 stop
$1,265Multiple Airlines
Thu, 30 Apr - Wed, 13 May
Multiple Airlines Logo
20:45 - 21:10
SYD
-
ONT
17h 25m
1 stop
Multiple Airlines Logo
09:40 - 18:50
ONT
-
SYD
40h 10m
1 stop
$1,270Multiple Airlines
Fri, 14 Aug - Thu, 20 Aug
Multiple Airlines Logo
20:45 - 21:47
SYD
-
ONT
18h 02m
1 stop
Multiple Airlines Logo
08:00 - 18:50
ONT
-
SYD
17h 50m
1 stop
$1,281Multiple Airlines
Fri, 24 Apr - Fri, 1 May
Delta Logo
10:00 - 23:44
MEL
-
ONT
30h 44m
2 stops
Delta Logo
06:00 - 07:50
ONT
-
MEL
32h 50m
2 stops
$1,312Delta
Tue, 21 Apr - Tue, 5 May
China Airlines Logo
21:50 - 18:00
MEL
-
ONT
37h 10m
1 stop
China Airlines Logo
00:10 - 10:40
ONT
-
MEL
41h 30m
1 stop
$1,679China Airlines
Fri, 28 Aug - Tue, 1 Sep
China Airlines Logo
21:50 - 18:40
MEL
-
ONT
37h 50m
1 stop
China Airlines Logo
00:45 - 10:40
ONT
-
MEL
40h 55m
1 stop
$1,703China Airlines
Thu, 23 Apr - Thu, 30 Apr
Air Canada Logo
20:00 - 20:36
ADL
-
ONT
41h 06m
3 stops
Air Canada Logo
10:45 - 15:55
ONT
-
ADL
36h 40m
3 stops
$3,267Air Canada
Booking Insights

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends into flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What are the most popular airlines flying to Ontario?

The most popular airline among KAYAK users flying to Ontario is Qantas Airways, followed by Fiji Airways and United Airlines.

Qantas Airways
Qantas Airways
#1 most popular
Fiji Airways
Fiji Airways
#2 most popular
United Airlines
United Airlines
#3 most popular
Air New Zealand
Air New Zealand
#4 most popular
Find deals

When to book flights to Ontario

Are your dates flexible? Find out the best times to travel to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Ontario based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Ontario flights

  • How far is Ontario Airport from central Ontario?

    The distance between Ontario Airport and the city centre of Ontario is 5 km.

  • What is the name of Ontario’s airport?

    Ontario is served by Ontario Airport, also commonly referred to as Ontario or Ontario Intl. The airport code is ONT.

  • How does KAYAK find such low prices on flights to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Reviews of the top airline flying to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Australia to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9418 reviews
6.6Food
8.1Crew
7.3Comfort
7.1Entertainment
7.7Boarding
Airline reviews

It was amazing. I had several upgraded seats on my flight out. Everything went smooth with no delays.

10.0 ExcellentEric, Mar 2026
NRT - LAX
Read more United Airlines reviews

It was amazing. I had several upgraded seats on my flight out. Everything went smooth with no delays.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

Flight attendants were friendly & good service, food sucks, seats uncomfortable, not many Asian movies or shows flying from Hong Kong

Flight attendants had a little attitude. Food tastes no good.

Overall we had a good experience during our flight from San Francisco to Houston.

it was a very short flight so my expectations were low.

Good flight. However, when booked flight with United, assumed the layover included by United in San Francisco of 1 hr and 40 minutes was sufficient . Not so and would recommend at least 2 hours or more. Needed to go through US immigration (very long lineups), then pick up bags, take all the way to another terminal, running because we did not have sufficient time. We made the flight because they held the door for us but luggage didn’t follow.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

Ontario (ONT)