Cheap Flights to Ontario, OR

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Find Your Flights to Ontario BOI

Cheap flights to Ontario (BOI)

Get started finding a cheap flight to Ontario on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

We recommend using the ‘Flexible Dates’ calendar at the top of the page to see the price of plane tickets on the surrounding dates. This allows you to pick the cheapest days to fly if your trip allows flexibility and score cheap flight deals to Ontario.

Roundtrip prices range from - , and one-ways to Ontario start as low as .

Be aware that choosing a non-stop flight can sometimes be more expensive while saving you time. And routes with connections may be available at a cheaper rate.

Airlines that fly to Ontario (BOI)

You have several options for which airline you choose to travel with to Ontario. There are airlines flying into BOI: . 

Cheap plane tickets may be available from different airlines at different times and with unique terms. It’s best to understand the details of each airline’s offer before judging its value.

For example, if you plan to check a bag or bring a carry-on, check whether the cheap airfare deal includes a baggage allowance. If not, verify whether the baggage fee is higher than the difference of other airline plane ticket deals offering free checked/carry-on baggage in exchange for a slightly higher airfare. 

Additionally, your preferred frequent flyer membership programs may influence your choice of cheap airline. Expedia allows you to enter your membership numbers during checkout to earn points from your airline and Expedia Rewards—all while getting a great deal and planning all your travel in one online platform.

Find the best deals

At Expedia, we source many flight deals from multiple providers, so you can easily find the best deals that are right for you. A great strategy for getting the best deals can be to make sure you book and travel at the optimal times. Airfare to Ontario (BOI) varies throughout the year based on seasonal demand. You’ll see the lowest rates for roundtrips to BOI in and in for one-ways.

Cancellation & flexibility

To change or cancel eligible flights, go to ‘My Trips’ and navigate to your itinerary. If you booked within the last 24-hours, you might be able to cancel your flight for free. Learn more about flight changes or cancellations from our customer service portal. Some plane tickets are available with no change fees, which you can filter for during your search.

Frequently asked questions

How do I find cheap flights to Ontario that have flexible change policies?
We understand that travel arrangements can change very quickly, so choosing a flexible ticket with Expedia is always a wise idea. Just check the “No change fee” box under the “Flexible change policies” filter. Your low-priced, flexible flight to Ontario is only a few clicks away.
How can I book the cheapest flight to Ontario?
If you want to have some extra money to play with during your Ontario getaway, book your flight in advance. Prices typically get more expensive close to the departure date. Also consider your airport options. Airfares differ depending on which airport you jet into. Be sure to compare prices across airlines and try to keep your travel dates flexible. Another tip? Be ready to book fast. If you come across a bargain, snap it up before it’s gone! Currently, one of the cheapest one-way tickets to Ontario costs $21. This is for a flight departing Las Vegas in June.
Which day of the week is the best day to buy a plane ticket to Ontario?
Research suggests Sunday is the best day of the week when it comes to booking cheaper fares. The chances of scoring an unbeatable deal to Ontario also depend on how far in advance you book your trip. The cheapest plane tickets are typically found from 21 days to around 45 days out from departure. You’re also likely to find bargains when tickets are released. Savings are subject to change and may vary depending on selections made.
What airport is best to fly into Ontario?
Sitting 80 mi from the downtown area, Boise Airport is the gateway to Ontario.
Which airlines fly to Ontario?
Take your pick of 6 airlines that connect Ontario with 21 airports across the world, including Alaska Airlines. Seattle is the most popular departure point for Alaska Airlines flights to Ontario. Delta Air Lines also has regular services to this destination.
How many nonstop flights are there to Ontario?
With 484 direct flights operating each week, you’ll be hitting the runway in Ontario before you have time to say, “Are we there yet?”
Where are the most popular flights to Ontario departing from?
Flights to Ontario from Seattle, Denver and Las Vegas airports are the most sought after.
Do you have any tips for my flight to Ontario?

  • What you pack in your carry-on baggage can be the difference between a comfortable flight, and one you’d prefer to forget. Start with the essentials, such as your passport (or a valid ID) and your travel documents. Once they’re packed, throw in any medications you might need. Next? Consider your comfort factor. A quality neck pillow, earplugs and a juicy bestseller will help the hours fly by while you’re in your seat.
  • There’s also a list of prohibited items for your hand luggage which can differ between carriers. As a general rule, avoid bringing anything sharp, explosive or flammable. This includes things like pocket knives, razor blades, aerosol cans and flares. Sports equipment like baseball bats, tennis rackets and objects considered weapons, such as swords and batons, are also banned from the cabin.

What to wear on a flight:

  • Whether traveling short or long-haul, wearing layers will help you stay comfortable. Opt for loose, breathable fabrics that will keep you cool and pack a sweater to cope with any variations in cabin temperatures. Keep your feet happy in a pair of closed-toe shoes or sneakers.
  • Consider wearing compression tights or socks to help prevent deep vein thrombosis (DVT). This condition is a result of blood clotting that can be caused by long periods of sitting, especially on long-distance journeys. Performing leg and foot exercises in your seat or walking around the cabin are great ways to improve your circulation.

How can I get a cheap last-minute flight to Ontario?
The key to booking a cheap last-minute flight to Ontario is to be flexible. You can land an unbeatable deal if you’re not tied to particular travel dates, flight times and carriers. Also compare the prices of flying into and out of nearby airports if that’s a possibility.
Where can I learn more about changing or canceling my flight to Ontario?
Most flights are free to cancel within 24 hours of making the reservation. However, some flights are non-refundable, and you may receive a flight credit from the airline to use for a future booking. For more information, please visit our Customer Service Portal.
Flights to Ontario information
Destination airport
Ontario
Destination airport IATA code
BOI
*Available to One Key members.