Stunning aerial view of downtown Ottawa, Ontario, Canada, with the Rideau Canal lined with vibrant autumn foliage, Gatineau Hills behind, capturing the beauty of fall in the capital (October 2025)

£71 Cheap Flights to Ontario

View £71 flight on Tue, 22 Sept 2026Opens in a new window

Popular airlines to Ontario

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Ontario

Prices were available within the past 7 days and start at £71 for one-way flights and £148 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Delta
Alaska Airlines
United
American Airlines
Scandinavian Airlines

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 kms (50 miles) 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 travellers 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 millilitres).
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 organised. 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 millilitres). Also, everything must fit inside a quart-size (one litre), 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

Expedia flights to Ontario

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.

Expedia is the largest online travel agency which means that Expedia have access to cheap flights. So make sure you check Expedia regularly for these bargain flights because the cheapest airline tickets sell out fast.

Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to Ontario for that period and let you choose your preferred time and airline. If you need additional assistance, Expedia Customer Service representatives are available from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends. Our capable staff will be able to help you with any questions regarding your Ontario flight, or other booking questions that may arise. When you book flights with Expedia you can rest assured that you have booked the best flight at the lowest price.

Expedia flights to Ontario

Travel information

Destination airport
Boise
Destination airport IATA code
BOI
Destination city name
Boise
Return price
£148

Trending flights to Ontario

Prices were available within the past 7 days and start at £71 for one-way flights and £148 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
*Available to Expedia members.