HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Louisville

$140+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SDF
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 August or January, booked 41 days in advance, depart on a Tuesday or Friday and return on a Wednesday

Cheap 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(American Airlines)

One-way from

$140
(Mytrip)

Popular in

March

Cheapest in

August

Average price

$696
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. 5% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find 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 March 25, 2025.

This American Airlines deal was found by Cheapflights users on 3/24. 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 4/1711:59 pmPDX - SDF
1 stop7h 26mAmerican Airlines
Sat 4/198:56 amSDF - PDX
1 stop17h 06mAmerican Airlines
Deal found 3/24$319
This Sun Country Air deal was found by Cheapflights users on 3/24. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/56:40 pmPDX - SDF
1 stop12h 53mSun Country Air
Mon 6/912:28 pmSDF - PDX
1 stop7h 30mSun Country Air
Deal found 3/24$340
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1812:59 amPDX - SDF
1 stop9h 04mDelta
Tue 4/226:00 pmSDF - PDX
1 stop7h 09mDelta
Deal found 3/24$345
This Mytrip deal was found by Cheapflights users on 3/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/51:35 pmPDX - SDF
2 stops22h 21mMultiple Airlines
Mon 6/912:28 pmSDF - PDX
1 stop7h 30mMultiple Airlines
Deal found 3/24$356
This Mytrip deal was found by Cheapflights users on 3/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/247:01 pmPDX - SDF
3 stops20h 30mSpirit Airlines
Wed 4/305:05 amSDF - PDX
2 stops31h 52mSpirit Airlines
Deal found 3/24$369
This Southwest deal was found by Cheapflights users on 3/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:10 amPDX - SDF
2 stops9h 15mSouthwest
Mon 9/227:10 pmSDF - PDX
1 stop6h 55mSouthwest
Deal found 3/24$387
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/242:25 pmPDX - SDF
2 stops29h 05mUnited Airlines
Wed 4/303:25 pmSDF - PDX
1 stop10h 49mUnited Airlines
Deal found 3/24$479
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/235:15 amPDX - SDF
2 stops13h 13mAlaska Airlines
Fri 6/2710:04 amSDF - PDX
1 stop9h 31mAlaska Airlines
Deal found 3/24$757

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 March 25, 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

Thu 4/17

11:59 pm-10:25 am

1 stop7h 26m

Louisville Intl

Sat 4/19

8:56 am-11:02 pm

1 stop17h 06m

$319

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Thu 6/5

6:40 pm-10:33 am

1 stop12h 53m

Louisville Intl

Mon 6/9

12:28 pm-4:58 pm

1 stop7h 30m

$340

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Fri 4/18

12:59 am-1:03 pm

1 stop9h 04m

Louisville Intl

Tue 4/22

6:00 pm-10:09 pm

1 stop7h 09m

$345

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Thu 6/5

1:35 pm-2:56 pm

2 stops22h 21m

Louisville Intl

Mon 6/9

12:28 pm-4:58 pm

1 stop7h 30m

$356

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Thu 4/24

7:01 pm-6:31 pm

3 stops20h 30m

Louisville Intl

Wed 4/30

5:05 am-9:57 am

2 stops31h 52m

$369

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Wed 9/17

6:10 am-6:25 pm

2 stops9h 15m

Louisville Intl

Mon 9/22

7:10 pm-11:05 pm

1 stop6h 55m

$387

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Thu 4/24

2:25 pm-10:30 pm

2 stops29h 05m

Louisville Intl

Wed 4/30

3:25 pm-11:14 pm

1 stop10h 49m

$479

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Mon 6/23

5:15 am-9:28 pm

2 stops13h 13m

Louisville Intl

Fri 6/27

10:04 am-4:35 pm

1 stop9h 31m

$757

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Tue 4/15

7:01 pm-10:17 pm

2 stops24h 16m

$140

PortlandLouisville

PDX - SDF

PDXSDF

Portland

Mon 4/14

12:59 am-1:00 pm

1 stop9h 01m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 13 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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Louisville flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 March 21, 2025.

The best time to book flights from Portland to Louisville is 41 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, January is the cheapest month in which you can book a flight from Portland to Louisville (average of $299). Flying from Portland to Louisville in April is currently the most expensive (average of $369). 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 March 25, 2025.

It’s typically best to fly out from Portland to Louisville in the afternoon. Doing so could potentially save you 55% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in Louisville by month

Plan your trip to Louisville by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Louisville ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Louisville when rainfall is around 3.1 in.

Temperature in Louisville by month

Plan your trip to Louisville by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Louisville, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 March 25, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Portland to Louisville to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

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

    According to our current data, American Airlines ($319), Sun Country Air ($340), and Delta ($345) offers the cheapest pricing from Portland to Louisville. You may be able to fly from Portland to Louisville for 36% 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 Spirit Airlines, with whom users have recently found tickets for as low as $140. However, be on the lookout for offers from Delta and American Airlines, 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, January is the cheapest month in which you can book a flight from Portland to Louisville (average of $299). Flying from Portland to Louisville in April is currently the most expensive (average of $369). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
Jeffersonville
Corydon
Elizabethtown
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 Knoxville flights
Eugene to Nashville flights
Portland to Cincinnati flights
Boise to Nashville flights
Boise to Knoxville flights
Boise to Cincinnati flights
Portland to Lexington flights
Redmond to Cincinnati flights
Medford to Nashville flights
Redmond to Nashville flights
Boise to Louisville flights
Portland to Blountville flights
Eugene to Louisville flights
Eugene to Cincinnati flights
Medford to Louisville flights
Redmond to Louisville flights
Eugene to Knoxville flights
Medford to Knoxville flights
Eugene to Lexington flights
Boise to Lexington flights
Redmond to Knoxville flights
Eugene to Blountville flights
Redmond to Blountville flights
Medford to Cincinnati flights
Yakima to Louisville flights
Portland to Evansville flights
Boise to Paducah flights
Redmond to Evansville flights
Redmond to Huntington flights
Portland to Paducah flights
Portland to Huntington flights
Yakima to Cincinnati flights
Pendleton to Cincinnati flights

Top 6 airlines flying from Portland to Louisville

Discover the top 6 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$191Average$265FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$320Average$475FlexibilityNo cancel feeOn-time71%
DeltaCheapest$326Average$489FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$365Average$560FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$366Average$484FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$426Average$695FlexibilityNo 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.