Cheap Flights to Ontario

View AU$123 flight on Sun, 1 Mar 2026Opens in a new window

Popular airlines to Ontario

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Cheap Tickets to Ontario

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, 6 Jan - Sat, 10 Jan
SEA
Seattle
ONT
Ontario
AU$185 Return, found 1 hour ago
AU$185
Return
found 1 hour ago
Select Alaska Airlines flight, departing Tue, 6 Jan from Seattle to Ontario, returning Sat, 10 Jan, priced at AU$185 found 1 hour ago
Delta
Sat, 10 Jan - Sat, 17 Jan
SEA
Seattle
SNA
Orange County
AU$186 Return, found 1 hour ago
AU$186
Return
found 1 hour ago
Select Delta flight, departing Sat, 10 Jan from Seattle to Orange County, returning Sat, 17 Jan, priced at AU$186 found 1 hour ago
Hawaiian Airlines
Sun, 14 Dec - Tue, 16 Dec
SEA
Seattle
SNA
Orange County
AU$246 Return, found 6 days ago
AU$246
Return
found 6 days ago
Select Hawaiian Airlines flight, departing Sun, 14 Dec from Seattle to Orange County, returning Tue, 16 Dec, priced at AU$246 found 6 days ago
American Airlines
Tue, 6 Jan - Sat, 10 Jan
SEA
Seattle
ONT
Ontario
AU$246 Return, found 1 hour ago
AU$246
Return
found 1 hour ago
Select American Airlines flight, departing Tue, 6 Jan from Seattle to Ontario, returning Sat, 10 Jan, priced at AU$246 found 1 hour ago
United
Sat, 10 Jan - Sat, 17 Jan
SEA
Seattle
SNA
Orange County
AU$383 Return, found 1 hour ago
AU$383
Return
found 1 hour ago
Select United flight, departing Sat, 10 Jan from Seattle to Orange County, returning Sat, 17 Jan, priced at AU$383 found 1 hour ago

Find the cheapest month to fly from Columbus (CMH) to Ontario (ONT)

August is typically the cheapest month to fly

From AU$306 - AU$1,112 per traveller.

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Ontario Flights

Have the time of your life in Ontario

Flying to Ontario is now easier than ever when you use Expedia to book your trip. We’ve got an extensive catalogue of Ontario flight deals, giving you the greatest number of options to choose from. Whether you prefer to fly on weekdays or weekends, in the morning or at night, a quick search on Expedia.com.au will help you find cheap tickets to Ontario in seconds. We even make it simple for you to stick with a certain airline if you’re trying to rack up frequent flyer points.

Tips for flying and packing light

If it’s been a while since you’ve travelled, you might be due for a refresher when it comes to flying. That’s where our helpful blog, Out There Starts Here, comes in. Wondering whether to pack for fine dining or more casual eats? Or whether you really need to bring a jacket? Written by seasoned travel experts, the articles on our blog provide you with the latest details about certain destinations, so you know just what to expect. Check out some of our recent articles for the smartest ways to see the sights.

Fly for less when you bundle airfare and accommodation

Our already low airfares are even more affordable when you bundle your flights with a stay at one of the hotels in Ontario. By booking all of your travel plans with us, you’ll save time and money, and enjoy the convenience of having all of your arrangements in one place.

Get the power of planning in the palm of your hand

Booking your trip to Ontario, Los Angeles has never been easier than when you use our mobile app to plan your dream getaway. The Expedia App is available on both Android and iOS, allowing you to reserve flights and hotels at any time of day, no matter what kind of phone you use. You’ll also get exclusive offers, receive flight updates, and can earn extra points. Wherever you are, the Expedia App helps you get where you want to be.

Join the Expedia Rewards Program

If you enjoy the finer things in life, sign up for our rewards program to receive exclusive benefits when you book with us. Expedia Rewards opens the door to member-only deals, +VIP Access hotel benefits, and earning Expedia Rewards points, that you can redeem your way. You’ll also get access to Unreal Deals that could save you the price of a plane ticket to Ontario when bundled with your accommodation.

What are you waiting for?

Expedia.com.au helps you find cheap flights to Ontario AU$185. So why wait another second to begin planning your trip? Start your search right now, and you could be boarding the next Ontario-bound flight. Bon voyage!

Frequently asked questions

What is the name of Ontario's airport?
Ontario is served by more than one airport, but most visitors choose to touch down at John Wayne Airport (SNA).
How far is John Wayne Airport (SNA) from central Ontario?
SNA is 48 kilometres from downtown Ontario, so expect a bit of a commute into the city centre.
What airport is best to fly into Ontario?
With a range of airports in one place, travellers are spoiled when flying into Ontario. If you touchdown at SNA, you'll be 48 kilometres from the downtown area. There's also Los Angeles - Ontario Intl. Airport (ONT) (5 kilometres away) and LGB (56 kilometres away).
How many airlines fly to Ontario?
Ontario is serviced by 16 air carriers from at least 46 worldwide airports.
Which airlines fly to Ontario?
Southwest Airlines, American Airlines and Frontier Airlines fly the most frequently to Ontario. The majority of flights begin in Phoenix, with Southwest Airlines having the most services on this route.
How many nonstop flights are there to Ontario?
Organising an amazing Ontario getaway is easy when there are 1,614 nonstop flights each week to choose from.
Where are the most popular flights to Ontario departing from?
Travellers often depart from Phoenix, Las Vegas and Denver airports when going to Ontario.
How long is the flight to Ontario Airport?
If it's Phoenix you're departing, you'll be airborne for around 1 hour and 24 minutes before you touchdown in Ontario. Runway to runway from Las Vegas takes around 1 hour and 11 minutes and from Denver, the average flight time is 2 hours and 33 minutes.
How to book the cheapest flight to Ontario?
We've all come across those lucky jet-setters who manage to score wonderfully cheap plane tickets every time they fly. Would you like to know how to do it for your Ontario holiday? Don't wait until the last possible moment to lock in your flight. Another excellent way to score an unbeatable deal is to compare all options. If your destination has more than one airport, be sure to research the cost of flying into a smaller terminal. Last but not least, another simple way to save some cash is be ready to book fast. If you stumble on an amazing deal, don't think twice — snap it up while you can.
Do you have any tips for my flight to Ontario?
If you're poorly prepared, air travel can be daunting. But there's no need to worry. Follow these handy hints and enjoy a comfortable start to your time in Ontario. What to pack in your hand luggage:

  • A plane trip can be a cruisy experience if you bring the right things. First of all you'll need toiletry items, such as deodorant, toothpaste and a toothbrush, a fresh change of clothes and a good read. Next, find a spot in your hand luggage for your phone, tablet and chargers, your important medications and maybe a blow-up neck pillow as well. Lastly, remember to take your passport, travel documents and your credit cards.

Do not pack the following items in your hand luggage:

  • While the list of restricted items can differ between airlines, the general guide to follow is nothing sharp, flammable or explosive. This includes things like screwdrivers, pocket knives, spray paint and fireworks. Sporting equipment like ski poles, and items that could injure passengers, such as firearms and ammunition, won't be allowed on board either.

What to wear on a flight:

  • Your goal here is to feel as comfortable as possible. Choose a pair of slip-on shoes, dress in loose, natural fibers and remember to bring a sweater in case you get chilly in the cabin.
  • Caused by sustained periods of immobility, deep vein thrombosis (DVT) is a blood clot condition that can affect some passengers during long-haul flights. Reduce the risks by drinking water, keeping your feet and legs moving and wearing compression tights or socks.

How to get through airport security fast when flying to Ontario?
The secret is to be organised before you arrive at airport security. That way, you'll be boarding that plane to Ontario in next to no time. Follow these tips and get your holiday off to a flying start:

  • First things first. Your travel documents and ID will need to be inspected by airport security. Have them easily accessible so you don't hold up the line.
  • The X-ray machine comes next. Empty your pockets and remove anything that is likely to beep. This includes things like headphones or earphones, as well as bulky coats or jackets. They'll need to be placed on the conveyor belt for screening.
  • All electronic gadgets, including your phone and tablet, are also required to be scanned separately.
  • Remove all liquids and gels from your carry-on bag. They often need to be sent through the X-ray machine separately. Each product should be in a container no larger than 3.4 ounces (100 millilitres) and everything must fit in a quart-size (one litre), clear zip-lock bag.
  • The right choice of footwear can save you valuable minutes. Boots and heavy shoes are often required to be removed and X-rayed separately. Slip-on sneakers are usually not.
  • Sharp items such as knives and scissors are not allowed on board. They'll be seized at security, so pack them in your checked suitcase.

Flights to Ontario information
Destination airport
Los Angeles - Ontario Intl.
Destination airport IATA code
ONT
Destination city name
Ontario
Return price
AU$184

Trending flights to Ontario

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 10 Mar - Tue, 7 Apr
SYD
Sydney
SNA
Orange County
AU$924 Return, found 1 day ago
AU$924
Return
found 1 day ago
Select American Airlines flight, departing Tue, 10 Mar from Sydney to Orange County, returning Tue, 7 Apr, priced at AU$924 found 1 day ago

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