Cheap Flights to Ontario

View ₩207,000 flight on Sat, Jan 17, 2026Opens in a new window

Popular airlines to Ontario

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How much is the cheapest flight to Ontario?

Prices were available within the past 7 days and start at ₩207,000 for one-way flights and ₩377,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Jan 7 - Tue, Jan 27
PHL
Philadelphia
ONT
Ontario
₩377,400 Roundtrip, found 3 days ago
₩377,400
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Jan 7 from Philadelphia to Ontario, returning Tue, Jan 27, priced at ₩377,400 found 3 days ago
Hawaiian Airlines
Sun, Feb 15 - Fri, Feb 20
EWR
New York
ONT
Ontario
₩415,100 Roundtrip, found 4 days ago
₩415,100
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Sun, Feb 15 from New York to Ontario, returning Fri, Feb 20, priced at ₩415,100 found 4 days ago
American Airlines
Tue, Jan 27 - Tue, Feb 17
PHL
Philadelphia
ONT
Ontario
₩415,700 Roundtrip, found 3 days ago
₩415,700
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jan 27 from Philadelphia to Ontario, returning Tue, Feb 17, priced at ₩415,700 found 3 days ago
United
Mon, Jan 12 - Sat, Jan 24
PHL
Philadelphia
ONT
Ontario
₩495,100 Roundtrip, found 1 day ago
₩495,100
Roundtrip
found 1 day ago
Select United flight, departing Mon, Jan 12 from Philadelphia to Ontario, returning Sat, Jan 24, priced at ₩495,100 found 1 day ago
Korean Air
Wed, May 27 - Tue, Jun 30
ICN
Seoul
ONT
Ontario
₩1,050,100 Roundtrip, found 5 days ago
₩1,050,100
Roundtrip
found 5 days ago
Select Korean Air flight, departing Wed, May 27 from Seoul to Ontario, returning Tue, Jun 30, priced at ₩1,050,100 found 5 days ago

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

August is typically the cheapest month to fly

From ₩291,582 - ₩1,060,793 per traveler.

Searching for cheap flights to Ontario? No travel company presents more choices than Expedia if you're looking to compare flights to Ontario. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Los Angeles. Expedia provides the cheapest flights to many destinations in Los Angeles and you may find even greater savings if you combine your flight with a hotel stay in Ontario.

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 kilometers from downtown Ontario, so expect a bit of a commute into the city center.
What airport is best to fly into Ontario?
With a range of airports in one place, travelers are spoiled when flying into Ontario. If you touchdown at SNA, you'll be 48 kilometers from the downtown area. There's also Los Angeles - Ontario Intl. Airport (ONT) (5 kilometers away) and LGB (56 kilometers 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?
Organizing 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?
Travelers 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 vacation? 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 organized 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 vacation 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 milliliters) and everything must fit in a quart-size (one liter), 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
Roundtrip price
₩377,400

Trending flights to Ontario

Prices were available within the past 7 days and start at ₩207,000 for one-way flights and ₩377,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Dec 18 - Tue, Jan 27
ICN
Seoul
ONT
Ontario
₩714,400 Roundtrip, found 1 day ago
₩714,400
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 18 from Seoul to Ontario, returning Tue, Jan 27, priced at ₩714,400 found 1 day ago
*Available to Expedia members.