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$135+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SDF
nov. 27 — dic. 41
jue. 11/27
jue. 12/4
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Louisville Intl are usually found in September or October, booked 84 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 octubre 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$289
(Delta)

One-way from

$135
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$366
Provider with most accurate pricing for Portland-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Portland-Louisville Intl flights.
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From Portland to Louisville Intl
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One-way flight from Portland to Louisville Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($69 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 octubre 28, 2025.

This Delta deal was found by Cheapflights users on 10/27. 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.
dom. 11/2312:35 amPDX - SDF
1 stop8h 22mDelta
sáb. 12/66:00 amSDF - PDX
1 stop7h 44mDelta
Deal found 10/27$312
This Delta deal was found by Cheapflights users on 10/28. 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.
dom. 12/712:32 amPDX - SDF
1 stop8h 25mDelta
mar. 12/96:00 amSDF - PDX
1 stop7h 44mDelta
Deal found 10/28$321
This American Airlines deal was found by Cheapflights users on 10/26. 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.
lun. 11/2412:00 pmPDX - SDF
1 stop7h 00mAmerican Airlines
sáb. 12/66:28 pmSDF - PDX
1 stop7h 55mAmerican Airlines
Deal found 10/26$352
This Delta deal was found by Cheapflights users on 10/27. 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.
mié. 12/312:32 amPDX - SDF
1 stop8h 25mDelta
dom. 12/76:35 amSDF - PDX
2 stops11h 58mDelta
Deal found 10/27$372
This Delta deal was found by Cheapflights users on 10/27. 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.
mié. 11/2611:15 pmPDX - SDF
1 stop7h 44mDelta
mié. 12/33:18 pmSDF - PDX
1 stop10h 01mDelta
Deal found 10/27$379
This Delta deal was found by Cheapflights users on 10/27. 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.
vie. 12/57:30 pmPDX - SDF
2 stops11h 34mDelta
dom. 12/76:35 amSDF - PDX
2 stops11h 58mDelta
Deal found 10/27$384
This Southwest deal was found by Cheapflights users on 10/26. 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.
mar. 12/1610:50 amPDX - SDF
1 stop7h 40mSouthwest
mié. 12/245:50 pmSDF - PDX
1 stop7h 40mSouthwest
Deal found 10/26$389

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 octubre 28, 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

dom. 12/7

12:32 am-11:57 am

1 stop8h 25m

Louisville Intl

mar. 12/9

6:00 am-10:44 am

1 stop7h 44m

$321

PortlandLouisville

PDX - SDF

PDXSDF

Portland

jue. 12/4

5:30 am-6:45 pm

2 stops10h 15m

Louisville Intl

dom. 12/7

6:35 am-3:33 pm

2 stops11h 58m

$382

PortlandLouisville

PDX - SDF

PDXSDF

Portland

mar. 12/16

10:50 am-9:30 pm

1 stop7h 40m

Louisville Intl

mié. 12/24

5:50 pm-10:30 pm

1 stop7h 40m

$389

PortlandLouisville

PDX - SDF

PDXSDF

Portland

lun. 12/1

11:12 pm-12:56 pm

1 stop10h 44m

Louisville Intl

jue. 12/4

7:00 am-2:47 pm

2 stops10h 47m

$413

PortlandLouisville

PDX - SDF

PDXSDF

Portland

mar. 11/25

8:50 am-7:35 pm

1 stop7h 45m

Louisville Intl

mar. 12/9

3:20 pm-10:35 pm

2 stops10h 15m

$414

PortlandLouisville

PDX - SDF

PDXSDF

Portland

sáb. 1/17

7:10 am-4:45 pm

1 stop6h 35m

$145

PortlandLouisville

PDX - SDF

PDXSDF

Portland

sáb. 1/17

8:30 am-8:28 pm

2 stops8h 58m

$150

PortlandLouisville

PDX - SDF

PDXSDF

Portland

dom. 1/18

8:30 am-10:30 pm

2 stops11h 00m

$155

PortlandLouisville

PDX - SDF

PDXSDF

Portland

mié. 12/24

10:52 pm-1:13 pm

2 stops11h 21m

$155

PortlandLouisville

PDX - SDF

PDXSDF

Portland

mar. 12/2

12:32 am-11:57 am

1 stop8h 25m

$161

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 15 results
1
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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 October.
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 October 24, 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 $278). 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 octubre 28, 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.

How much does it cost to fly round-trip from Portland to Louisville?

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 octubre 28, 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
11,203 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,203 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,240 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,994 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
9,001 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,032 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 Delta fly from Portland to Louisville in about 8h 25m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 1944 mi.

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

    According to our current data, American Airlines ($280), Southwest ($299), and Delta ($306) offers the cheapest pricing from Portland to Louisville. You may be able to fly from Portland to Louisville for 40% 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 Southwest, with whom users have recently found tickets for as low as $145. 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 $278). 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

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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 octubre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$280Average$430FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$299Average$450FlexibilityNo cancel feeOn-time63%
DeltaCheapest$306Average$449FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$326Average$512FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$541Average$722FlexibilityNo cancel feeOn-time75%

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