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Cheap flights from Ontario to La Crosse from $367

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to La Crosse departing on 5/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to La Crosse

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:05 am - 8:56 am
ONT
-
LSE
24h 51m
2 stops
United Airlines Logo
8:15 pm - 8:20 pm
LSE
-
ONT
26h 05m
2 stops
$686United Airlines
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
6:05 am - 8:56 am
ONT
-
LSE
24h 51m
2 stops
United Airlines Logo
1:41 pm - 10:26 pm
LSE
-
ONT
10h 45m
1 stop
$696United Airlines
Sat, Oct 24 - Wed, Oct 28
American Airlines Logo
11:59 pm - 11:31 am
ONT
-
LSE
9h 32m
2 stops
American Airlines Logo
6:00 am - 1:24 pm
LSE
-
ONT
9h 24m
2 stops
$706American Airlines
Fri, Jul 10 - Sat, Jul 18

United Airlines flights from Ontario to La Crosse

Our best United Airlines deals on Ontario to La Crosse flight tickets
United Airlines
Oct 24
ONT6:05 amOntario
24h 51m
2 stops
LSE8:56 amLa Crosse
Oct 28
LSE8:15 pmLa Crosse
26h 05m
2 stops
ONT8:20 pmOntario
$686
United Airlines
Oct 24
ONT6:05 amOntario
24h 51m
2 stops
LSE8:56 amLa Crosse
Oct 28
LSE1:41 pmLa Crosse
10h 45m
1 stop
ONT10:26 pmOntario
$696

momondo 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, momondo users made 832,500 searches. Data last updated May 24, 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

Sat 10/24

6:05 am-8:56 am

2 stops24h 51m

La Crosse

Wed 10/28

8:15 pm-8:20 pm

2 stops26h 05m

$686

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Sat 10/24

6:05 am-8:56 am

2 stops24h 51m

La Crosse

Wed 10/28

1:41 pm-10:26 pm

1 stop10h 45m

$696
Quickest round-trip

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Fri 7/10

11:59 pm-11:31 am

2 stops9h 32m

La Crosse

Sat 7/18

6:00 am-1:24 pm

2 stops9h 24m

$706
Cheapest one-way

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Sat 5/30

3:30 pm-7:14 pm

3 stops49h 44m

$367
Quickest one-way

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Sat 5/30

12:41 pm-12:06 am

2 stops9h 25m

$439

OntarioLa Crosse

ONT - LSE

ONTLSE

Ontario

Fri 5/29

12:40 pm-12:06 am

2 stops9h 26m

$464

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to La Crosse from

How to get the cheapest flight ticket from Ontario to La Crosse

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to La Crosse?

American Airlines is the most popular carrier operating from Ontario to La Crosse

When to book flights from Ontario to La Crosse

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to La Crosse according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to La Crosse (ONT to LSE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to La Crosse

Fastest flight time

11h 26m

Direct flights

None
The fastest flight from Ontario to La Crosse takes 11h 26m
There are no direct flights from Ontario to La Crosse. There are no popular flight routes from Ontario to La Crosse.
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Frequently asked questions about flying from Ontario to La Crosse

  • How far is Ontario to La Crosse by plane?

    There are 1560.7 mi between Ontario and La Crosse. In terms of flight time, this usually takes a little over 11h 26m.

  • When did momondo last update prices for flights from Ontario Airport to La Crosse Airport?

    Prices for flights from Ontario Airport to La Crosse Airport are updated daily.

  • How old do you have to be to fly from Ontario Airport to La Crosse Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to La Crosse Airport.

  • What documentation or ID do you need to fly to La Crosse Airport?

    The necessary travel and health documents for your La Crosse Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near La Crosse?

Book flights to La Crosse if you plan to visit one of these locations
Onalaska
Winona
Decorah
Harpers Ferry
Lansing

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to La Crosse?

Finding the right flight to La Crosse from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to La Crosse quick and easy, saving you time and money.

Can I find flights from Ontario to La Crosse with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to La Crosse from Ontario with this policy.

How can momondo help me find flights from Ontario to La Crosse?

momondo helps you find the best flight between Ontario and La Crosse by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to La Crosse right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to La Crosse flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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