Title: $54 Cheap Flights to Ontario, OR - Expedia.com

![Malheur Butte Ontario Oregon](https://images.trvl-media.com/place/9223/5cf553e3-9c33-4892-9d27-8210f9490c2f.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

![](https://images.trvl-media.com/place/9223/5cf553e3-9c33-4892-9d27-8210f9490c2f.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

# $54 Cheap Flights to Ontario, OR

[View $54 flight on Thu, Mar 5, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:DEN,to:BOI,departure:3/5/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:53.98&airProductToken=AQowCi4IxnISBDM5MzMYg2kgwUMoqemGAzCr6oYDOEVAAFgBagRQQ18xcgdaMjFSWFMyEgwIARABGAEqAkY5MgAYASIECAEQASgCKAMwDQ) 

- [Roundtrip](?flightType=roundtrip)
- [One-way](?flightType=oneway)
- [Multi-city](?flightType=multicity)

### Travelers

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InfantsYounger than 2

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[Ontario Travel Guide](https://expedia.com/Ontario.dx9223)[Hotels in Ontario](https://expedia.com/Ontario-Hotels.d9223.Travel-Guide-Hotels)[Car Rentals in Ontario](https://expedia.com/Car-Rentals-In-Ontario.d9223.Car-Rental-Guide)[Ontario Vacation Packages](https://expedia.com/Ontario.d9223.Destination-Travel-Guides)

## Popular airlines to Ontario

- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg)  
Alaska Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Ontario, Oregon, United States of America,departure:2/25/2026TANYT&leg2=from:Ontario, Oregon, United States of America,to:CMH,departure:3/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg)  
Delta  
[](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Ontario, Oregon, United States of America,departure:2/25/2026TANYT&leg2=from:Ontario, Oregon, United States of America,to:CMH,departure:3/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg)  
United  
[](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Ontario, Oregon, United States of America,departure:2/25/2026TANYT&leg2=from:Ontario, Oregon, United States of America,to:CMH,departure:3/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg)  
American Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Ontario, Oregon, United States of America,departure:2/25/2026TANYT&leg2=from:Ontario, Oregon, United States of America,to:CMH,departure:3/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg)  
Southwest Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Ontario, Oregon, United States of America,departure:2/25/2026TANYT&leg2=from:Ontario, Oregon, United States of America,to:CMH,departure:3/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg)  
Frontier Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Ontario, Oregon, United States of America,departure:2/25/2026TANYT&leg2=from:Ontario, Oregon, United States of America,to:CMH,departure:3/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg)  
Air Canada  
[](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Ontario, Oregon, United States of America,departure:2/25/2026TANYT&leg2=from:Ontario, Oregon, United States of America,to:CMH,departure:3/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}])

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## How much is the cheapest flight to Ontario?

Prices were available within the past 7 days and start at $54 for one-way flights and $108 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All deals

One way

Roundtrip

![Frontier Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif)

Thu, Mar 5 - Sun, Mar 8

DEN

Denver

BOI

Boise

$108

Roundtrip

just found

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DEN,to:BOI,departure:3/5/2026TANYT&leg2=from:BOI,to:DEN,departure:3/8/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:107.96&airProductToken=AQowCi4IxnISBDM5MzMYg2kgwUMoqemGAzCr6oYDOEVAAFgBagRQQ18xcgdaMjFSWFMyCjAKLgjGchIEMzkzNBjBQyCDaSjni4cDMN-MhwM4RUAAWAFqBFBDXzFyB1oyMVlYUzISCggBEAEYASoCRjkYASIECAEQASgCKAMwDQ)

![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif)

Thu, Apr 9 - Sun, Apr 12

LAS

Las Vegas

BOI

Boise

$117

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:LAS,to:BOI,departure:4/9/2026TANYT&leg2=from:BOI,to:LAS,departure:4/12/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:116.80&airProductToken=AQoxCi8I15wBEgQzMzYwGIuQASDBQyjs-IkDMNX5iQM4VkAAWAFqA1dHQXIHVlBOVkgyRQoxCi8I15wBEgQ0Nzk2GMFDIIuQASjjlIoDMNaVigM4VkAAWAFqA1dHQXIHVlBOVkgyRRIKCAEQARgBKgJXThgBIgQIARABKAIoAygEMAE)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Apr 1 - Tue, Apr 7

LAS

Las Vegas

BOI

Boise

$137

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:LAS,to:BOI,departure:4/1/2026TANYT&leg2=from:BOI,to:LAS,departure:4/7/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:136.40&airProductToken=AQpvCjYIxJgBEgQxNjkwGIuQASDyEii9nYkDMJWeiQM4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWU0E5QkMKNQjEmAESBDIxMTEY8hIgwUMo3Z6JAzCnn4kDOEVAAVgBaglNQUlOQkFTSUNyCFZBVlNBOUJDCm8KNQjEmAESBDE3MTAYwUMg8hIoqNuJAzDy24kDOEVAAFgBaglNQUlOQkFTSUNyCFZBVlNBOUJDCjYIxJgBEgQxNjU5GPISIIuQASiE3YkDMNvdiQM4RUABWAFqCU1BSU5CQVNJQ3IIVkFWU0E5QkMSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB)

![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif)

Thu, Apr 9 - Sun, Apr 12

LAS

Las Vegas

BOI

Boise

$137

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:LAS,to:BOI,departure:4/9/2026TANYT&leg2=from:BOI,to:LAS,departure:4/12/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:136.60&airProductToken=AQpnCjIIwaYBEgQyMDM1GIuQASCSaCiz9okDMIH3iQM4WEAAWAFqBVNBVkVScghHSDJZQVVCTgoxCMGmARIEMTQyNRiSaCDBQyiG-IkDMJv5iQM4WEABWAFqBVNBVkVScghHSDJZQVVCTgozCjEIwaYBEgMyMjkYwUMgi5ABKKCTigMwnZSKAzhYQABYAWoFU0FWRVJyCEdIMk9DVUJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwDQ)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Tue, Mar 31 - Sat, Apr 4

PHX

Phoenix

BOI

Boise

$154

Roundtrip

found 3 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:BOI,departure:3/31/2026TANYT&leg2=from:BOI,to:PHX,departure:4/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:153.80&airProductToken=AQo0CjIIwYIBEgQ0OTM1GO-5ASDBQyiijYkDMLiOiQM4QkAAWAFqBUJBU0lDcghRVkFLWlNCWAo0CjIIwYIBEgQ2MjgwGMFDIO-5ASjwvokDMP2_iQM4QkAAWAFqBUJBU0lDcghPVkFJSlNCWBIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs)

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

### September is typically the cheapest month to fly

From $210 - $578 per traveler.

## Tips to find the cheapest flights to Ontario

**The cheapest day to fly**

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.

**The cheapest month to fly**

March is the cheapest month to fly to Ontario. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Ontario. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute. 

**The most affordable time to book a flight**

Typically, a Sunday can be the cheapest time to book a flight to Ontario, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation. 

**The cheapest round-trip tickets to Ontario**

The lowest price for round-trip flights to Ontario in 2026 starts from from $108, while one-way tickets start from from $54\. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Ontario. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

**The cheapest airlines flying to Ontario**

Frontier Airlines, Alaska Airlines, Southwest Airlines, Delta, American Airlines are just some of the airlines that can typically offer cheap tickets to Ontario. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Ontario and countless more destinations worldwide.

**The most affordable airports to fly into**

To view the cheapest airports to fly into for Ontario, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Ontario. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

**Save with a package**

With Expedia's amazing [package deals](https://www.expedia.com/package-deals), you could save hundreds of dollars by booking your Ontario plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving. 

**Date flexibility for the cheapest flights to Ontario**

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Ontario. 

**Stopover savings**

The cheapest tickets to Ontario are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Ontario. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

**Get Expedia's Price Drop Protection**

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference\*. This gives you peace of mind that you're getting one of the cheapest flights to Ontario for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

\*Terms apply.

**Use our Price Tracking feature**

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Ontario. Simply download the free Expedia app to your smart device and activate Ontario flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

**Book with Expedia**

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Ontario. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages. 

## Frequently asked questions

### What month is the cheapest to fly to Ontario?

### Which US cities have the cheapest flights to Ontario?

### Which US cities fly direct to Ontario?

> - Seattle
> - Denver
> - Phoenix
> - Salt Lake City
> - Portland

### How to find a cheap flight to Ontario?

### How to get a cheap last-minute flight to Ontario?

### How far in advance should I book a flight to Ontario?

### Which day of the week is the cheapest day to buy a plane ticket to Ontario?

### Which airlines fly to Ontario?

> - Alaska Airlines
> - Delta Air Lines
> - United Airlines
> - American Airlines

### Where do you fly into Ontario?

### How far is the airport from central Ontario?

### Can I save money by booking an Ontario trip package?

### Can I change or cancel my flight to Ontario?

\*Flight schedules are subject to change.

__Flights to Ontario information__
| Destination airport           | Boise |
| ----------------------------- | ----- |
| Destination airport IATA code | BOI   |
| Destination city name         | Boise |
| Roundtrip price               | $108  |

## Trending flights to Ontario

Prices were available within the past 7 days and start at $54 for one-way flights and $108 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All deals

One way

Roundtrip

![Frontier Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif)

Thu, Mar 5 - Sun, Mar 8

DEN

Denver

BOI

Boise

$108

Roundtrip

just found

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DEN,to:BOI,departure:3/5/2026TANYT&leg2=from:BOI,to:DEN,departure:3/8/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:107.96&airProductToken=AQowCi4IxnISBDM5MzMYg2kgwUMoqemGAzCr6oYDOEVAAFgBagRQQ18xcgdaMjFSWFMyCjAKLgjGchIEMzkzNBjBQyCDaSjni4cDMN-MhwM4RUAAWAFqBFBDXzFyB1oyMVlYUzISCggBEAEYASoCRjkYASIECAEQASgCKAMwDQ)

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