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La Crosse

$548+ Cheap flights from Ontario to La Crosse (ONT - LSE)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LSE
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This American Airlines deal was found by Cheapflights users on 1/27. 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 3/1911:58 pm
ONT
-
LSE
2 stops9h 04m
American Airlines
Wed 3/2511:34 am
LSE
-
ONT
2 stops11h 50m
American Airlines
Deal found 1/27$548
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 3/2011:58 pm
ONT
-
LSE
2 stops9h 04m
American Airlines
Wed 3/2511:34 am
LSE
-
ONT
2 stops11h 50m
American Airlines
Deal found 1/27$605
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 3/1811:58 pm
ONT
-
LSE
2 stops9h 03m
American Airlines
Wed 3/2511:34 am
LSE
-
ONT
2 stops11h 50m
American Airlines
Deal found 1/27$611
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 3/2011:58 pm
ONT
-
LSE
2 stops9h 04m
American Airlines
Tue 3/245:09 am
LSE
-
ONT
2 stops16h 36m
American Airlines
Deal found 1/27$641
This American Airlines deal was found by Cheapflights users on 1/28. 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.
Tue 3/1712:22 pm
ONT
-
LSE
2 stops9h 14m
American Airlines
Tue 3/249:48 am
LSE
-
ONT
2 stops11h 57m
American Airlines
Deal found 1/28$647
This American Airlines deal was found by Cheapflights users on 1/28. 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.
Tue 3/1710:56 am
ONT
-
LSE
2 stops10h 40m
American Airlines
Wed 3/2511:34 am
LSE
-
ONT
2 stops9h 35m
American Airlines
Deal found 1/28$664
This American Airlines deal was found by Cheapflights users on 1/27. 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 3/1911:58 pm
ONT
-
LSE
2 stops9h 04m
American Airlines
Tue 3/249:48 am
LSE
-
ONT
2 stops11h 57m
American Airlines
Deal found 1/27$694
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 3/2011:58 pm
ONT
-
LSE
2 stops9h 04m
American Airlines
Thu 3/2611:34 am
LSE
-
ONT
2 stops11h 50m
American Airlines
Deal found 1/27$715
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 3/1811:58 pm
ONT
-
LSE
2 stops9h 03m
American Airlines
Thu 3/2611:34 am
LSE
-
ONT
2 stops11h 50m
American Airlines
Deal found 1/27$721
This American Airlines deal was found by Cheapflights users on 1/27. 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 3/1911:58 pm
ONT
-
LSE
2 stops9h 04m
American Airlines
Sun 3/296:29 pm
LSE
-
ONT
2 stops16h 22m
American Airlines
Deal found 1/27$726

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$548
(American Airlines)

Popular in

November

Cheapest in

April

Average price

$620
Provider with most accurate pricing for Los Angeles-La Crosse flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-La Crosse flights.
Search Deals
From Ontario to La Crosse
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($234 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
Use the filters below to find and compare flights from Ontario to La Crosse that are best for you.

Fly from

Ontario

Fly to

La Crosse

Route

Depart

Return

Price

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Thu 3/19

11:58 pm-11:02 am

2 stops9h 04m

La Crosse

Wed 3/25

11:34 am-9:24 pm

2 stops11h 50m

$548

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Wed 3/18

11:58 pm-11:01 am

2 stops9h 03m

La Crosse

Wed 3/25

11:34 am-9:24 pm

2 stops11h 50m

$611

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Fri 3/20

11:58 pm-11:02 am

2 stops9h 04m

La Crosse

Tue 3/24

5:09 am-7:45 pm

2 stops16h 36m

$641

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Tue 3/17

12:22 pm-11:36 pm

2 stops9h 14m

La Crosse

Tue 3/24

9:48 am-7:45 pm

2 stops11h 57m

$647

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Fri 3/20

11:58 pm-11:02 am

2 stops9h 04m

La Crosse

Wed 3/25

11:34 am-7:09 pm

2 stops9h 35m

$658

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Tue 3/17

10:56 am-11:36 pm

2 stops10h 40m

La Crosse

Wed 3/25

11:34 am-7:09 pm

2 stops9h 35m

$664

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Thu 3/19

11:58 pm-11:02 am

2 stops9h 04m

La Crosse

Tue 3/24

9:48 am-7:45 pm

2 stops11h 57m

$694

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Fri 3/20

11:58 pm-11:02 am

2 stops9h 04m

La Crosse

Thu 3/26

11:34 am-9:24 pm

2 stops11h 50m

$715

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Wed 3/18

11:58 pm-11:01 am

2 stops9h 03m

La Crosse

Thu 3/26

11:34 am-9:24 pm

2 stops11h 50m

$721

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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, June is the cheapest month in which you can book a flight from Ontario to La Crosse (average of $266). 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 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 . Ontario and La Crosse are separated by a distance of 1559 mi.

  • 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, June is the cheapest month in which you can book a flight from Ontario to La Crosse (average of $266). 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

Browse thousands of different options on Cheapflights for your next trip

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