HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Louisville

$132+ Cheap flights from Portland to Louisville (PDX - SDF)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SDF
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Louisville with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Portland to Louisville Intl are usually found in October or September, booked 83 days in advance, depart on a Tuesday or Friday and return on a Wednesday

Cheap flight deals from Portland to Louisville

Cheapest flights from Portland to Louisville
Explore the most affordable flight options available from Portland to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/3110:52 pmPDX - SDF
2 stops11h 21mUnited Airlines
Sun 1/43:18 pmSDF - PDX
1 stop8h 49mUnited Airlines
Deal found 12/11$424
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:02 amPDX - SDF
1 stop6h 30mUnited Airlines
Sat 1/36:00 amSDF - PDX
1 stop10h 20mUnited Airlines
Deal found 12/10$493
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/307:00 amPDX - SDF
1 stop9h 59mUnited Airlines
Sat 1/36:00 amSDF - PDX
1 stop10h 20mUnited Airlines
Deal found 12/11$557
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/275:00 amPDX - SDF
1 stop6h 22mUnited Airlines
Wed 12/313:25 pmSDF - PDX
1 stop10h 34mUnited Airlines
Deal found 12/10$570
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:10 amPDX - SDF
1 stop7h 18mUnited Airlines
Sat 1/36:00 amSDF - PDX
1 stop10h 20mUnited Airlines
Deal found 12/10$581

Find flight deals from Portland to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Louisville (SDF). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$321
(Delta)

One-way from

$132
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$697
Provider with most accurate pricing for Portland-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Louisville Intl flights.
Search Deals
From Portland to Louisville Intl
Search Deals
One-way flight from Portland to Louisville Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($68 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Portland to Louisville that are best for you.

Fly from

Portland

Fly to

Louisville

Route

Depart

Return

Price

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Wed 1/21

7:45 am-10:24 pm

2 stops11h 39m

Louisville Intl

Tue 2/3

9:00 am-1:46 pm

1 stop7h 46m

$326

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Wed 1/21

6:45 am-11:20 pm

2 stops13h 35m

Louisville Intl

Tue 2/3

6:45 am-3:40 pm

2 stops11h 55m

$337

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Tue 1/6

6:00 am-4:16 pm

1 stop7h 16m

Louisville Intl

Thu 1/8

6:00 am-10:34 am

1 stop7h 34m

$340

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Tue 1/13

5:00 am-2:26 pm

1 stop6h 26m

Louisville Intl

Mon 1/19

5:35 am-11:57 am

1 stop9h 22m

$340

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Wed 1/7

6:00 am-5:30 pm

1 stop8h 30m

Louisville Intl

Mon 1/12

5:10 pm-10:30 pm

1 stop8h 20m

$340

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Sat 1/10

9:30 am-10:05 pm

2 stops9h 35m

Louisville Intl

Sat 1/17

3:05 pm-7:55 pm

1 stop7h 50m

$355

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Thu 1/8

5:00 am-2:26 pm

1 stop6h 26m

Louisville Intl

Thu 1/15

2:05 pm-6:56 pm

1 stop7h 51m

$359

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Sat 2/14

8:04 am-8:55 pm

1 stop9h 51m

Louisville Intl

Wed 2/18

11:55 am-4:50 pm

1 stop7h 55m

$391

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Sat 2/14

8:30 am-10:13 pm

2 stops10h 43m

Louisville Intl

Wed 2/18

1:50 pm-8:43 pm

1 stop9h 53m

$396

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Thu 12/25

12:16 pm-11:03 pm

1 stop7h 47m

$151

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 17 results
1
2

Compare providers for flights from Portland to Louisville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Louisville in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Louisville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Louisville flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Louisville flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Portland 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 Portland to Louisville

How far ahead should I book a flight from Portland to Louisville?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Louisville. Price data was last updated on December 5, 2025.

The best time to book flights from Portland to Louisville is 83 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portland to Louisville?

Currently, June is the cheapest month in which you can book a flight from Portland to Louisville (average of $64). Flying from Portland to Louisville in January is currently the most expensive (average of $266). 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.

What is the cheapest time of day to fly from PDX to SDF?

Find hourly flight availability from Portland to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s typically best to fly out from Portland to Louisville in the afternoon. Doing so could potentially save you 54% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated December 12, 2025.
Read through reviews of airlines operating flights from Portland to Louisville, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,432 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,432 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,253 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,095 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from Portland to Louisville. 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 Portland to Louisville?

    Airlines like United Airlines, Southwest, and Delta fly from Portland to Louisville in about 7h 16m. The time it takes to get you to your destination can typically vary by up to 6h 19m. Airlines will cover a distance of 1944 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Portland to Louisville round-trip?

    According to our current data, Southwest ($270), American Airlines ($280), and Delta ($304) offers the cheapest pricing from Portland to Louisville. You may be able to fly from Portland to Louisville for 43% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Portland to Louisville one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $134. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Portland to Louisville for a low price.

  • Can I find deals for flights from Portland to Louisville that include hotel bookings?

    Yes. In addition to deals on Portland to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Louisville?

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

  • Can I find deals for business class flights from Portland to Louisville?

    Yes. Cheapflights offers flight deals from Portland to Louisville 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 Portland to Louisville?

    Currently, June is the cheapest month in which you can book a flight from Portland to Louisville (average of $64). Flying from Portland to Louisville in January is currently the most expensive (average of $266). 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 Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Louisville

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Nashville flights
Portland to Cincinnati flights
Boise to Nashville flights
Portland to Knoxville flights
Boise to Louisville flights
Redmond to Nashville flights
Eugene to Nashville flights
Portland to Lexington flights
Redmond to Louisville flights
Redmond to Cincinnati flights
Boise to Knoxville flights
Medford to Nashville flights
Boise to Cincinnati flights
Eugene to Cincinnati flights
Eugene to Knoxville flights
Boise to Lexington flights
Medford to Cincinnati flights
Medford to Louisville flights
Medford to Knoxville flights
Redmond to Knoxville flights
Eugene to Louisville flights
Portland to Blountville flights
Eugene to Lexington flights
Boise to Paducah flights
Eugene to Blountville flights
Redmond to Evansville flights
Yakima to Cincinnati flights
Yakima to Louisville flights
Portland to Paducah flights
Portland to Huntington flights
Redmond to Huntington flights
Portland to Evansville flights
Redmond to Blountville flights
Pendleton to Cincinnati flights

Top 5 airlines flying from Portland to Louisville

Discover the top 5 airlines that operate flights from Portland to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$270Average$454FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$280Average$439FlexibilityNo cancel feeOn-time71%
DeltaCheapest$304Average$438FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$320Average$508FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$541Average$722FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.