Cheap Flights to Ontario

View ₩903,600 flight on Sun, Jan 25, 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 ₩903,600 for one-way flights and ₩946,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Fri, Apr 10 - Mon, Apr 20
ICN
Seoul
BOI
Boise
₩946,500 Roundtrip, found 1 hour ago
₩946,500
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Fri, Apr 10 from Seoul to Boise, returning Mon, Apr 20, priced at ₩946,500 found 1 hour ago
Delta
Mon, Oct 20 - Mon, Nov 10
ICN
Seoul
BOI
Boise
₩966,500 Roundtrip, found 4 days ago
₩966,500
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Oct 20 from Seoul to Boise, returning Mon, Nov 10, priced at ₩966,500 found 4 days ago
United
Fri, Apr 10 - Mon, Apr 20
ICN
Seoul
BOI
Boise
₩1,199,200 Roundtrip, found 1 hour ago
₩1,199,200
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Apr 10 from Seoul to Boise, returning Mon, Apr 20, priced at ₩1,199,200 found 1 hour ago
American Airlines
Mon, Oct 20 - Mon, Nov 10
ICN
Seoul
BOI
Boise
₩1,319,400 Roundtrip, found 4 days ago
₩1,319,400
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Oct 20 from Seoul to Boise, returning Mon, Nov 10, priced at ₩1,319,400 found 4 days ago
Alaska Airlines
Mon, Oct 6 - Wed, Oct 15
ICN
Seoul
BOI
Boise
₩1,453,400 Roundtrip, found 2 days ago
₩1,453,400
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Oct 6 from Seoul to Boise, returning Wed, Oct 15, priced at ₩1,453,400 found 2 days ago

Find the cheapest month to fly from Columbus (CMH) to Boise (BOI)

September is typically the cheapest month to fly

From ₩297,535 - ₩1,143,494 per traveler.

Frequently asked questions

What is the name of Ontario's airport?
Ontario has one main airport, Boise Airport (BOI).
What airport is best to fly into Ontario?
A flight to Ontario means hitting the tarmac at Boise Airport (BOI). Hop off the plane, grab your baggage and you'll be 80 kilometers from the downtown streets.
How many airlines fly to Ontario?
There are 7 air carriers that fly into Ontario from 24 airports across the globe.
Which airlines fly to Ontario?
Alaska Airlines and Delta frequently fly into Ontario. Catching an Alaska Airlines flight from Seattle is one of the most popular ways to get there.
How many nonstop flights are there to Ontario?
With 515 nonstop flights running each week, you'll be arriving in Ontario before you can ask, "Are we there yet?"
Where are the most popular flights to Ontario departing from?
Flights to Ontario from Seattle, Denver and Phoenix airports are in high demand.
How long is the flight to Ontario Airport?
If it's Seattle you're leaving behind, you'll be in the sky for around 1 hour and 25 minutes before you touchdown in Ontario. Tarmac to tarmac from Denver typically takes 2 hours and 8 minutes and from Phoenix, it's 2 hours and 18 minutes.
How to book the cheapest flight to Ontario?
Don't leave booking your flight to Ontario until the last possible moment. That's one move frequent travelers use to get the best prices. Booking in advance means more choices and less expensive flights. Another great way to score a bargain is to shop around. If where you're headed has a few airports, research the cost of flying into a less busy terminal. Lastly, be prepared to lock in your seat quickly if you stumble on a real bargain. It might not be available for long! With a bit of know-how and a little good fortune, the perfect airfare will be yours.
Do you have any tips for my flight to Ontario?
We've rounded up all the info you need to make your flight as pain-free as possible. Follow our insider tips and you'll be breezing through the airport and discovering Ontario in no time at all. What to pack in your hand luggage:

  • A plane trip can be a comfortable experience if you pack the right things. First things first, you'll need toiletry items, such as deodorant and a toothbrush, a clean set of clothes and a few magazines. Next, find a spot in your carry-on bag for your phone and charger, any daily medications and perhaps a blow-up neck pillow as well. Lastly, don't forget to take your passport, travel documents and your bank cards.

Do not pack the following items in your hand luggage:

  • Double-check that you don't have sharp objects (like a knife or scissors) hiding in one of the zippers of your hand luggage. Other banned items include explosive or flammable products, such as fuel and matches, and gels and liquids in containers with a capacity of more than 3.4 ounces (100 milliliters).

What to wear on a flight:

  • Comfort should be your main concern when choosing what to wear on your flight. Loose, breathable clothing is a sensible option, as are flat, closed-toe shoes.
  • Caused by sustained periods of immobility, deep vein thrombosis (DVT) is a blood clot condition that can affect passengers on long-distance flights. Lower your risks by staying hydrated, keeping your legs and feet moving and wearing compression socks to help your circulation.

How to get through airport security fast when flying to Ontario?
It's all about being organized. We've compiled some handy tips and tricks for a fuss-free trip through security. Look out Ontario, here you come:

  • First things first. Your boarding pass and passport will need to be inspected by airport security. Have them close by so you don't have to dig around for them.
  • The X-ray machine comes next. Remove anything on you that is likely to set off the alarm. This includes items like earphones or headphones, as well as heavy jackets or coats. They'll all need to go on the X-ray conveyor belt.
  • Your electronic devices like laptops and phones will also have to go on a tray to be scanned. Don't worry, you'll be back online before you know it.
  • Any gels or liquids, such as lip balm or cologne, that you want to take on board need to be in containers no larger than 3.4 ounces (100 milliliters). Also, everything must fit inside a quart-size (one liter), zip-lock bag.
  • The right choice of footwear can save you several precious minutes. Hiking or heavy-style boots are often required to be removed and separately scanned. Slip-on sneakers are usually not.
  • Sharp items such as knives and scissors are not allowed in the cabin. They'll be confiscated at security, so pack them safely away in your checked luggage.

Book with confidence

Book with confidence

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 Oregon. Expedia provides the cheapest flights to many destinations in Oregon and you may find even greater savings if you combine your flight with a hotel stay in Ontario.

Travel information

Travel information

Destination airport
Boise
Destination airport IATA code
BOI
Destination city name
Boise
Roundtrip price
₩946,500

Trending flights to Ontario

Prices were available within the past 7 days and start at ₩903,600 for one-way flights and ₩946,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Fri, Apr 10 - Mon, Apr 20
ICN
Seoul
BOI
Boise
₩946,500 Roundtrip, found 1 hour ago
₩946,500
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Fri, Apr 10 from Seoul to Boise, returning Mon, Apr 20, priced at ₩946,500 found 1 hour ago

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