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La Crosse

$322+ Cheap flights from Ontario to La Crosse (ONT - LSE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LSE
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
1 adult, Economy
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Cheap flight deals from Ontario to La Crosse

Cheapest flights from Ontario to La Crosse
Explore the most affordable flight options available from Ontario to La Crosse. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 11, 2026.

This American Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2611:58 pm
ONT
-
LSE
2 stops9h 04m
American Airlines
Mon 3/306:29 pm
LSE
-
ONT
2 stops16h 22m
American Airlines
Deal found 3/10$449
This American Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:35 pm
ONT
-
LSE
2 stops12h 00m
American Airlines
Wed 4/225:40 am
LSE
-
ONT
2 stops9h 38m
American Airlines
Deal found 3/8$581
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:00 am
ONT
-
LSE
2 stops50h 06m
United Airlines
Sat 5/97:26 pm
LSE
-
ONT
2 stops27h 10m
United Airlines
Deal found 3/8$664

Find flight deals from Ontario to La Crosse

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to La Crosse (LSE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$449
(American Airlines)

One-way from

$322
(United Airlines)
Provider with most accurate pricing for Los Angeles Los Angeles-La Crosse flight deals.
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Provider most trusted by Cheapflights users for Los Angeles Los Angeles-La Crosse flights.
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From Ontario to La Crosse
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One-way flight from Ontario to La Crosse
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to La Crosse that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 11, 2026.
Use the filters below to find and compare flights from Ontario to La Crosse that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Thu 3/26

11:58 pm-11:02 am

2 stops9h 04m

La Crosse

Mon 3/30

6:29 pm-8:51 am

2 stops16h 22m

$449
Quickest round-trip

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Thu 4/16

7:35 pm-9:35 am

2 stops12h 00m

La Crosse

Wed 4/22

5:40 am-1:18 pm

2 stops9h 38m

$581

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Tue 5/5

5:00 am-9:06 am

2 stops50h 06m

La Crosse

Sat 5/9

7:26 pm-8:36 pm

2 stops27h 10m

$664
Cheapest one-way
Quickest one-way

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Tue 5/12

5:00 am-10:47 pm

2 stops15h 47m

$322

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Mon 5/11

7:00 am-1:14 pm

1 stop28h 14m

$404

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Sorted by cheapest first

Best time to book a flight from Ontario to La Crosse

Have a flexible travel schedule? Discover the best time to fly to La Crosse from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to La Crosse

What is the cheapest month to book a flight from Ontario to La Crosse?

Currently, April is the cheapest month in which you can book a flight from Ontario to La Crosse (average of $252). Flying from Ontario to La Crosse in November is currently the most expensive (average of $590). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Ontario to La Crosse. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to La Crosse?

    Airlines like American Airlines and United Airlines fly from Ontario to La Crosse in about 9h 04m. The time it takes to get you to your destination can typically vary by up to 41h 02m. Ontario and La Crosse are separated by a distance of 1559 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Ontario to La Crosse that include hotel bookings?

    Yes. In addition to deals on Ontario to La Crosse flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to La Crosse?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to La Crosse.

  • Can I find deals for business class flights from Ontario to La Crosse?

    Yes. Cheapflights offers flight deals from Ontario to La Crosse by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to La Crosse?

    Currently, April is the cheapest month in which you can book a flight from Ontario to La Crosse (average of $252). Flying from Ontario to La Crosse in November is currently the most expensive (average of $590). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near La Crosse?

Book flights to La Crosse if you plan to visit one of these locations
Decorah
Winona

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