$150 Cheap Flights from Portland (PDX) to Louisville (SDF)

View $150 flight on Tue, Feb 17, 2026Opens in a new window

Popular airlines from Portland International Airport (PDX) to Louisville Intl. Airport (SDF)

Cheap Flights from Portland to Louisville (PDX-SDF)

Prices were available within the past 7 days and start at $150 for one-way flights and $312 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sat, Jan 10 - Sat, Jan 17
PDX
Portland
SDF
Louisville
$312 Roundtrip, found 6 days ago
$312
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Sat, Jan 10 from Portland to Louisville, returning Sat, Jan 17, priced at $312 found 6 days ago
United
Thu, Dec 25 - Wed, Jan 7
PDX
Portland
SDF
Louisville
$313 Roundtrip, found 4 days ago
$313
Roundtrip
found 4 days ago
Select United flight, departing Thu, Dec 25 from Portland to Louisville, returning Wed, Jan 7, priced at $313 found 4 days ago
American Airlines
Fri, Feb 20 - Mon, Feb 23
PDX
Portland
SDF
Louisville
$315 Roundtrip, found 3 days ago
$315
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Feb 20 from Portland to Louisville, returning Mon, Feb 23, priced at $315 found 3 days ago
United
Wed, Jan 7 - Thu, Jan 8
PDX
Portland
SDF
Louisville
$316 Roundtrip, found 2 days ago
$316
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 7 from Portland to Louisville, returning Thu, Jan 8, priced at $316 found 2 days ago
United
Sat, Jan 10 - Sat, Jan 17
PDX
Portland
SDF
Louisville
$317 Roundtrip, found 6 days ago
$317
Roundtrip
found 6 days ago
Select United flight, departing Sat, Jan 10 from Portland to Louisville, returning Sat, Jan 17, priced at $317 found 6 days ago
United
Thu, Dec 25 - Wed, Jan 7
PDX
Portland
SDF
Louisville
$318 Roundtrip, found 4 days ago
$318
Roundtrip
found 4 days ago
Select United flight, departing Thu, Dec 25 from Portland to Louisville, returning Wed, Jan 7, priced at $318 found 4 days ago
Southwest Airlines
Sat, Feb 21 - Thu, Feb 26
PDX
Portland
SDF
Louisville
$320 Roundtrip, found 4 days ago
$320
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Sat, Feb 21 from Portland to Louisville, returning Thu, Feb 26, priced at $320 found 4 days ago
United
Fri, Feb 20 - Mon, Feb 23
PDX
Portland
SDF
Louisville
$322 Roundtrip, found 3 days ago
$322
Roundtrip
found 3 days ago
Select United flight, departing Fri, Feb 20 from Portland to Louisville, returning Mon, Feb 23, priced at $322 found 3 days ago
Delta
Tue, Dec 9 - Thu, Dec 11
PDX
Portland
SDF
Louisville
$328 Roundtrip, just found
$328
Roundtrip
just found
Select Delta flight, departing Tue, Dec 9 from Portland to Louisville, returning Thu, Dec 11, priced at $328 just found
Alaska Airlines
Tue, Dec 9 - Thu, Dec 11
PDX
Portland
SDF
Louisville
$527 Roundtrip, just found
$527
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Dec 9 from Portland to Louisville, returning Thu, Dec 11, priced at $527 just found

Find the cheapest month to fly from Portland (PDX) to Louisville (SDF)

August is typically the cheapest month to fly

From $198 - $716 per traveler.

Alternative airports near Louisville

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Louisville Intl. SDF. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $522
SDF
Louisville Intl.
CheapestClosest
Average driving time to city center9 min
Flights from $522

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF) cost?
Snag a cheap one-way flight from $150 or cheap return flight from $312 from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF)?
Traveling in January can help you save, as it's the cheapest month for flights between PDX and SDF. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from PDX to SDF. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF)?
There aren't any daily nonstop flights from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from PDX to SDF?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a range of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF)?
Opt for a flight from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF) that leaves before 3 PM to reduce the likelihood of delays. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF) last-minute?
Last-minute fares from PDX to SDF are usually more expensive. To secure the lowest prices, start looking for flights as early as possible. That said, if you're flexible with your travel plans, it's possible to find a cheap fare right before your trip.
Is it cheaper to book a PDX to SDF flight and hotel package?
Booking a PDX to SDF flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our impressive range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Louisville Intl. Airport (SDF)?
In most instances, you can cancel or modify your PDX to SDF flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you need more details, go to our Customer Service portal.

Travel information

Origin airport
Portland Intl.
Destination airport
Louisville Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$311
Distance
1944 mi

Book with confidence

Portland to Louisville Flights

The cheapest times to fly from Portland to Louisville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Louisville are during the month of January. You can find some of the cheapest flights from Portland to Louisville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Louisville

Sunday is one of the best days to book for cheap flights from Portland to Louisville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Louisville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Louisville in 2025. You can also book with separate airlines for your outbound and return journeys, from $150 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Louisville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Louisville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to Louisville Flights

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*Available to One Key members.