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Cheap flights from Portland to La Crosse from $189

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to La Crosse departing on 7/18. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Portland to La Crosse

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:01 am - 4:52 pm
PDX
-
LSE
8h 51m
1 stop
American Airlines Logo
5:22 pm - 12:07 am
LSE
-
PDX
8h 45m
1 stop
$338American Airlines
Fri, Sep 11 - Sun, Sep 13
American Airlines Logo
6:01 am - 4:52 pm
PDX
-
LSE
8h 51m
1 stop
American Airlines Logo
5:22 pm - 12:07 am
LSE
-
PDX
8h 45m
1 stop
$369American Airlines
Wed, Sep 23 - Sun, Sep 27
American Airlines Logo
11:58 pm - 9:23 am
PDX
-
LSE
7h 25m
1 stop
American Airlines Logo
6:19 pm - 10:59 pm
LSE
-
PDX
6h 40m
1 stop
$399American Airlines
Tue, Oct 6 - Tue, Oct 13
American Airlines Logo
9:00 am - 12:20 am
PDX
-
LSE
13h 20m
2 stops
American Airlines Logo
5:22 pm - 12:07 am
LSE
-
PDX
8h 45m
1 stop
$440American Airlines
Wed, Sep 23 - Sun, Sep 27
American Airlines Logo
1:45 pm - 11:59 pm
PDX
-
LSE
8h 14m
1 stop
American Airlines Logo
5:41 pm - 12:50 am
LSE
-
PDX
9h 09m
1 stop
$479American Airlines
Thu, Jul 16 - Sat, Jul 18
American Airlines Logo
9:00 am - 12:20 am
PDX
-
LSE
13h 20m
2 stops
American Airlines Logo
5:22 pm - 12:07 am
LSE
-
PDX
8h 45m
1 stop
$488American Airlines
Fri, Sep 11 - Sun, Sep 13
American Airlines Logo
6:33 pm - 9:23 am
PDX
-
LSE
12h 50m
2 stops
American Airlines Logo
6:19 pm - 10:59 pm
LSE
-
PDX
6h 40m
1 stop
$500American Airlines
Tue, Oct 6 - Tue, Oct 13
American Airlines Logo
9:00 am - 12:20 am
PDX
-
LSE
13h 20m
2 stops
American Airlines Logo
12:26 pm - 11:23 pm
LSE
-
PDX
12h 57m
2 stops
$589American Airlines
Fri, Sep 11 - Sat, Sep 12
American Airlines Logo
9:00 am - 12:20 am
PDX
-
LSE
13h 20m
2 stops
American Airlines Logo
5:54 am - 1:22 pm
LSE
-
PDX
9h 28m
2 stops
$621American Airlines
Wed, Sep 23 - Sun, Sep 27
United Airlines Logo
5:00 am - 9:24 pm
PDX
-
LSE
14h 24m
2 stops
United Airlines Logo
8:00 am - 12:35 am
LSE
-
PDX
18h 35m
2 stops
$656United Airlines
Sat, Nov 14 - Wed, Nov 18

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American Airlines flights from Portland to La Crosse

Our best American Airlines deals on Portland to La Crosse flight tickets
American Airlines
Sep 11
PDX6:01 amPortland
8h 51m
1 stop
LSE4:52 pmLa Crosse
Sep 13
LSE5:22 pmLa Crosse
8h 45m
1 stop
PDX12:07 amPortland
$338
American Airlines
Sep 23
PDX6:01 amPortland
8h 51m
1 stop
LSE4:52 pmLa Crosse
Sep 27
LSE5:22 pmLa Crosse
8h 45m
1 stop
PDX12:07 amPortland
$369
American Airlines
Oct 6
PDX11:58 pmPortland
7h 25m
1 stop
LSE9:23 amLa Crosse
Oct 13
LSE6:19 pmLa Crosse
6h 40m
1 stop
PDX10:59 pmPortland
$399

United Airlines flights from Portland to La Crosse

Our best United Airlines deals on Portland to La Crosse flight tickets
United Airlines
Nov 14
PDX5:00 amPortland
14h 24m
2 stops
LSE9:24 pmLa Crosse
Nov 18
LSE8:00 amLa Crosse
18h 35m
2 stops
PDX12:35 amPortland
$656
United Airlines
Oct 27
PDX7:35 pmPortland
20h 28m
2 stops
LSE6:03 pmLa Crosse
Oct 31
LSE8:00 amLa Crosse
16h 44m
2 stops
PDX10:44 pmPortland
$675
United Airlines
Nov 14
PDX10:45 amPortland
29h 18m
1 stop
LSE6:03 pmLa Crosse
Nov 18
LSE8:00 amLa Crosse
15h 02m
2 stops
PDX9:02 pmPortland
$679

momondo Fare Finder

 
Customize your flight search to find flights from Portland 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 June 28, 2026.
Use the filters below to find and compare flights from Portland to La Crosse that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Fri 9/11

6:01 am-4:52 pm

1 stop8h 51m

La Crosse

Sun 9/13

5:22 pm-12:07 am

1 stop8h 45m

$338

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Wed 9/23

6:01 am-4:52 pm

1 stop8h 51m

La Crosse

Sun 9/27

5:22 pm-12:07 am

1 stop8h 45m

$369
Quickest round-trip

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Tue 10/6

11:58 pm-9:23 am

1 stop7h 25m

La Crosse

Tue 10/13

6:19 pm-10:59 pm

1 stop6h 40m

$399

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Wed 9/23

9:00 am-12:20 am

2 stops13h 20m

La Crosse

Sun 9/27

5:22 pm-12:07 am

1 stop8h 45m

$440

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Thu 7/16

1:45 pm-11:59 pm

1 stop8h 14m

La Crosse

Sat 7/18

5:41 pm-12:50 am

1 stop9h 09m

$479

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Fri 9/11

9:00 am-12:20 am

2 stops13h 20m

La Crosse

Sun 9/13

5:22 pm-12:07 am

1 stop8h 45m

$488

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Tue 10/6

6:33 pm-9:23 am

2 stops12h 50m

La Crosse

Tue 10/13

6:19 pm-10:59 pm

1 stop6h 40m

$500

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Fri 9/11

9:00 am-12:20 am

2 stops13h 20m

La Crosse

Sat 9/12

12:26 pm-11:23 pm

2 stops12h 57m

$589

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Wed 9/23

9:00 am-12:20 am

2 stops13h 20m

La Crosse

Sun 9/27

5:54 am-1:22 pm

2 stops9h 28m

$621

PortlandLa Crosse

PDX - LSE

PDXLSE

Portland

Sat 11/14

5:00 am-9:24 pm

2 stops14h 24m

La Crosse

Wed 11/18

8:00 am-12:35 am

2 stops18h 35m

$656

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to La Crosse from

How to get the cheapest flight ticket from Portland 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 Portland to La Crosse?

Allegiant Air is the most popular carrier operating from Portland to La Crosse

When to book flights from Portland to La Crosse

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

Cheap Portland to La Crosse (PDX to LSE) flight deals and tips

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

Fastest flight time

8h 14m

Direct flights

None
The fastest flight from Portland to La Crosse takes 8h 14m
There are no direct flights from Portland to La Crosse. There are no popular flight routes from Portland to La Crosse.
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Frequently asked questions about flying from Portland to La Crosse

  • How far is Portland to La Crosse by plane?

    The straight-line distance from Portland to La Crosse is 1538.5 mi. Typically, this will take 8h 14m by plane in normal conditions.

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

    Prices for flights from Portland Airport to La Crosse Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Portland 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 Portland Airport to La Crosse Airport.

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

    The required travel and health documents for your La Crosse Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at La Crosse Airport. We recommend that you seek guidance from your airline or a reliable 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 Portland to La Crosse?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to La Crosse from Portland.

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

Yes. momondo allows you to filter the results for Portland to La Crosse flights to just show those with flexible booking policies.

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

Once all potential Portland to La Crosse flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Portland to La Crosse flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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