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Cheap flights from Portland to Louisville from $109

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 Louisville departing on 4/18. 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
0 bags

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Find the cheapest flights from Portland to Louisville

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:22 am - 9:30 pm
PDX
-
SDF
12h 08m
1 stop
American Airlines Logo
7:37 am - 12:58 pm
SDF
-
PDX
8h 21m
1 stop
$264American Airlines
Sat, Apr 25 - Wed, Apr 29
American Airlines Logo
11:46 am - 9:26 pm
PDX
-
SDF
6h 40m
1 stop
American Airlines Logo
6:23 pm - 11:09 pm
SDF
-
PDX
7h 46m
1 stop
$321American Airlines
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
11:59 pm - 11:25 am
PDX
-
SDF
8h 26m
1 stop
American Airlines Logo
6:12 pm - 12:20 am
SDF
-
PDX
9h 08m
1 stop
$340American Airlines
Sat, Mar 28 - Tue, Mar 31
United Airlines Logo
5:00 am - 4:41 pm
PDX
-
SDF
8h 41m
2 stops
United Airlines Logo
9:07 am - 3:09 pm
SDF
-
PDX
9h 02m
1 stop
$345United Airlines
Sat, Apr 25 - Wed, Apr 29
American Airlines Logo
11:46 am - 9:26 pm
PDX
-
SDF
6h 40m
1 stop
American Airlines Logo
6:12 pm - 12:15 am
SDF
-
PDX
9h 03m
1 stop
$359American Airlines
Tue, Mar 10 - Wed, Mar 11
Southwest Logo
6:00 am - 5:45 pm
PDX
-
SDF
8h 45m
2 stops
Southwest Logo
3:30 pm - 10:00 pm
SDF
-
PDX
9h 30m
2 stops
$369Southwest
Sat, Apr 25 - Wed, Apr 29
Southwest Logo
11:15 am - 10:30 pm
PDX
-
SDF
8h 15m
1 stop
Southwest Logo
8:25 am - 12:55 pm
SDF
-
PDX
7h 30m
1 stop
$374Southwest
Wed, May 6 - Wed, May 27
United Airlines Logo
1:00 pm - 9:59 pm
PDX
-
SDF
5h 59m
1 stop
United Airlines Logo
3:15 pm - 9:10 pm
SDF
-
PDX
8h 55m
1 stop
$376United Airlines
Sat, Mar 14 - Sat, Mar 21
American Airlines Logo
6:00 am - 4:47 pm
PDX
-
SDF
7h 47m
1 stop
American Airlines Logo
6:00 am - 12:24 pm
SDF
-
PDX
9h 24m
1 stop
$379American Airlines
Sun, Apr 19 - Tue, May 5
Southwest Logo
11:55 pm - 12:35 pm
PDX
-
SDF
9h 40m
2 stops
Southwest Logo
8:25 am - 12:55 pm
SDF
-
PDX
7h 30m
1 stop
$380Southwest
Wed, May 6 - Wed, May 27

Delta flights from Portland to Louisville

Our best Delta deals on Portland to Louisville flight tickets
Delta
May 4
PDX12:30 amPortland
8h 25m
1 stop
SDF11:55 amLouisville Intl
May 29
SDF4:26 pmLouisville Intl
6h 45m
1 stop
PDX8:11 pmPortland
$379
Delta
May 7
PDX2:06 pmPortland
7h 14m
1 stop
SDF12:20 amLouisville Intl
May 29
SDF4:26 pmLouisville Intl
6h 45m
1 stop
PDX8:11 pmPortland
$398
Delta
May 5
PDX11:06 pmPortland
8h 18m
1 stop
SDF10:24 amLouisville Intl
May 26
SDF6:05 amLouisville Intl
7h 38m
1 stop
PDX10:43 amPortland
$428

American Airlines flights from Portland to Louisville

Our best American Airlines deals on Portland to Louisville flight tickets
American Airlines
Apr 25
PDX6:22 amPortland
12h 08m
1 stop
SDF9:30 pmLouisville Intl
Apr 29
SDF7:37 amLouisville Intl
8h 21m
1 stop
PDX12:58 pmPortland
$264
American Airlines
Mar 10
PDX2:05 pmPortland
6h 53m
1 stop
SDF11:58 pmLouisville Intl
Mar 11
SDF7:40 amLouisville Intl
8h 21m
1 stop
PDX1:01 pmPortland
$321
American Airlines
Mar 26
PDX11:59 pmPortland
7h 05m
1 stop
SDF10:04 amLouisville Intl
Apr 1
SDF6:00 amLouisville Intl
8h 07m
1 stop
PDX11:07 amPortland
$340

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Louisville 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 February 17, 2026.
Use the filters below to find and compare flights from Portland to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Sat 4/25

6:22 am-9:30 pm

1 stop12h 08m

Louisville Intl

Wed 4/29

7:37 am-12:58 pm

1 stop8h 21m

$264

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Tue 3/10

11:46 am-9:26 pm

1 stop6h 40m

Louisville Intl

Wed 3/11

6:23 pm-11:09 pm

1 stop7h 46m

$321

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Sat 3/28

11:59 pm-11:25 am

1 stop8h 26m

Louisville Intl

Tue 3/31

6:12 pm-12:20 am

1 stop9h 08m

$340

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Sat 4/25

5:00 am-4:41 pm

2 stops8h 41m

Louisville Intl

Wed 4/29

9:07 am-3:09 pm

1 stop9h 02m

$345

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Tue 3/10

11:46 am-9:26 pm

1 stop6h 40m

Louisville Intl

Wed 3/11

6:12 pm-12:15 am

1 stop9h 03m

$359

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Sat 4/25

6:00 am-5:45 pm

2 stops8h 45m

Louisville Intl

Wed 4/29

3:30 pm-10:00 pm

2 stops9h 30m

$369

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Wed 5/6

11:15 am-10:30 pm

1 stop8h 15m

Louisville Intl

Wed 5/27

8:25 am-12:55 pm

1 stop7h 30m

$374

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Sat 3/14

1:00 pm-9:59 pm

1 stop5h 59m

Louisville Intl

Sat 3/21

3:15 pm-9:10 pm

1 stop8h 55m

$376

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Sun 4/19

6:00 am-4:47 pm

1 stop7h 47m

Louisville Intl

Tue 5/5

6:00 am-12:24 pm

1 stop9h 24m

$379

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Wed 5/6

11:55 pm-12:35 pm

2 stops9h 40m

Louisville Intl

Wed 5/27

8:25 am-12:55 pm

1 stop7h 30m

$380

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 Louisville from

How to get the cheapest flight ticket from Portland to Louisville

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 month to fly to Louisville?

If you are unable to visit Louisville during the month of October, then departing from Portland during the month September is also very affordable. Most momondo users find prices during this month for around $357.

How far in advance should I book a flight to Louisville?

You are more likely to see cheaper flights to Louisville from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Louisville for around $474 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Louisville from Portland for as low as $337 on momondo.

How have Portland to Louisville flight prices changed over time?

As of February 2026, prices for Portland to Louisville flights are approximately 6% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Louisville

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

Cheap Portland to Louisville (PDX to SDF) flight deals and tips

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

Fastest flight time

6h 12m

Direct flights

None
The fastest flight from Portland to Louisville takes 6h 12m
There are no direct flights from Portland to Louisville. There are no popular flight routes from Portland to Louisville.
Search flight deals

  • How far is Portland to Louisville Intl by plane?

    The distance between Portland and Louisville Intl is about 1944.5 mi. 6h 12m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Portland Airport to Louisville Intl Airport?

    Prices for flights from Portland Airport to Louisville Intl Airport were last updated today.

  • How many operators does momondo search for flights from Portland Airport to Louisville Intl Airport?

  • How old do you have to be to fly from Portland Airport to Louisville Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Louisville Intl Airport.

  • What documentation or ID do you need to fly to Louisville Intl Airport?

    The travel and health documents required for your trip to Louisville Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Louisville Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Portland to Louisville?

Best airlines flying from Portland to Louisville

Compare and see reviews for airlines that fly from Portland to Louisville with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $270Free CancellationRating
8.0
4,287 reviews
Search Southwest flights
American AirlinesPriceFrom $280Free CancellationRating
7.2
11,292 reviews
Search American Airlines flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
9,306 reviews
Search United Airlines flights
DeltaPriceFrom $300Free CancellationRating
7.9
8,205 reviews
Search Delta flights
Alaska AirlinesPriceFrom $506Free CancellationRating
8.0
11,887 reviews
Search Alaska Airlines flights

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
French Lick
Elizabethtown
West Baden Springs
Bardstown
Jeffersonville
Shepherdsville
New Albany
Corydon
Elizabeth
Brandenburg
Charlestown
Springfield
Georgetown

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Louisville?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Louisville. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Portland to Louisville with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portland to Louisville?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Louisville from Portland.

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

If you are simply researching potential flights to Louisville, momondo offers a useful price alert feature which will track prices for flights to Louisville from Portland and alert you when they change.

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