Cheap Flights to Ontario, WI

Popular airlines to Ontario

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Frequently asked questions

What month is the cheapest to fly to Ontario?
The cheapest month to fly to Ontario is when demand is low. Off-peak months are usually when you'll find cheap flights. To keep costs down, steer clear of flying during school breaks and public holidays.
Which US cities have the cheapest flights to Ontario?
Chicago often has cheap flights to Ontario. Remember that fares may vary based on factors like time of year, demand and number of stopovers.
Which US cities fly direct to Ontario?
The only US city where you can fly to Ontario on a nonstop route is Chicago. Check out all the available departure dates and times to Ontario by selecting "Direct flights only" when you begin your search.
How to find a cheap flight to Ontario?
To get cheap flights to Ontario, book ahead of time and travel during the low season. Want an insider tip? Fly on a Thursday and save around 16% on average compared to those who jet off on a Sunday.* Set up price tracking on the Expedia app and we'll notify you if prices drop.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to Ontario?
While booking in advance is generally the best way to save money, don't panic if your Ontario vacation is last minute. You can still find cheap flights to Ontario, especially if your plans have a little leeway. Try switching up your dates, looking at different ticket types or departing from an alternative hub.
How far in advance should I book a flight to Ontario?
Secure your flight to Ontario two to four months ahead if you're taking off from an international destination. For domestic travel, the usual timeframe is 28 days in advance. Lower prices and a greater choice of departure dates, schedules and seating options are just a few of the benefits of booking early.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to Ontario?
You can save an average of 8% by buying tickets on a Sunday rather than Fridays, which tend to be the most expensive day to book.* When it comes to scoring a cheap flight to Ontario, it's all about timing.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Where do you fly into Ontario?
The main airport to fly to Ontario is La Crosse Municipal Airport (LSE). There's also the option to land at Wisconsin Rapids, WI (ISW-South Wood County) when flying to Ontario.
How far is the airport from central Ontario?
If you're flying into La Crosse Municipal Airport (LSE), you'll be approximately 35 mi west of central Ontario.
Can I save money by booking an Ontario trip package?
It's possible to save hundreds of dollars if you lock in an Ontario flight and hotel package deal on Expedia. And you'll make life easier by having all your travel arrangements in one place. Try bundling flights and accommodations with extras like car rentals and activities for your own customized Ontario trip.
Can I change or cancel my flight to Ontario?
You can typically change or cancel your flight to Ontario within 24 hours of booking. However, keep in mind that some flights are non-refundable. In those cases, you may be issued a credit toward future flights in place of a direct refund. It's important to check the airline's terms of service in your itinerary for specific details. Use Expedia's "Changes included" or "No cancel fee" filters when you search to find cheap flights to Ontario with flexible change policies. To learn more, head to our Customer Service Portal.

*Flight schedules are subject to change.

*Available to One Key members.

 

Book with confidence

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

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 , while one-way tickets start from . 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

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, 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.

Tips to find the cheapest flights to Ontario

Travel information

Destination airport
Ontario
Destination airport IATA code
LSE

Explore a world of travel with Expedia