$139 Cheap Flights from Louisville (SDF) to Portland (PWM)

View $139 flight on Tue, Sep 16, 2025Opens in a new window

Popular airlines from Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM)

Cheap Flights from Louisville to Portland (SDF-PWM)

Prices were available within the past 7 days and start at $139 for one-way flights and $223 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 22 - Mon, Oct 27
SDF
Louisville
PWM
Portland
$223 Roundtrip, found 6 days ago
$223
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 22 from Louisville to Portland, returning Mon, Oct 27, priced at $223 found 6 days ago
United
Wed, Oct 22 - Thu, Oct 23
SDF
Louisville
PWM
Portland
$224 Roundtrip, found 6 days ago
$224
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 22 from Louisville to Portland, returning Thu, Oct 23, priced at $224 found 6 days ago
United
Wed, Oct 22 - Mon, Oct 27
SDF
Louisville
PWM
Portland
$228 Roundtrip, found 6 days ago
$228
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 22 from Louisville to Portland, returning Mon, Oct 27, priced at $228 found 6 days ago
United
Wed, Oct 22 - Mon, Oct 27
SDF
Louisville
PWM
Portland
$236 Roundtrip, found 6 days ago
$236
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 22 from Louisville to Portland, returning Mon, Oct 27, priced at $236 found 6 days ago
United
Wed, Oct 22 - Thu, Oct 23
SDF
Louisville
PWM
Portland
$237 Roundtrip, found 6 days ago
$237
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 22 from Louisville to Portland, returning Thu, Oct 23, priced at $237 found 6 days ago
Delta
Wed, Oct 15 - Sat, Oct 18
SDF
Louisville
PWM
Portland
$239 Roundtrip, found 5 days ago
$239
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 15 from Louisville to Portland, returning Sat, Oct 18, priced at $239 found 5 days ago
Delta
Wed, Dec 24 - Thu, Jan 8
SDF
Louisville
PWM
Portland
$247 Roundtrip, found 5 days ago
$247
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Dec 24 from Louisville to Portland, returning Thu, Jan 8, priced at $247 found 5 days ago
American Airlines
Sat, Sep 20 - Wed, Sep 24
SDF
Louisville
PWM
Portland
$253 Roundtrip, found 6 days ago
$253
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Sep 20 from Louisville to Portland, returning Wed, Sep 24, priced at $253 found 6 days ago
United
Wed, Oct 22 - Thu, Oct 23
SDF
Louisville
PWM
Portland
$258 Roundtrip, found 6 days ago
$258
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 22 from Louisville to Portland, returning Thu, Oct 23, priced at $258 found 6 days ago
Southwest Airlines
Wed, Oct 15 - Sat, Oct 18
SDF
Louisville
PWM
Portland
$263 Roundtrip, found 5 days ago
$263
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Wed, Oct 15 from Louisville to Portland, returning Sat, Oct 18, priced at $263 found 5 days ago

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

August is typically the cheapest month to fly

From $197 - $616 per traveler.

Graph displaying average flight prices per month

Alternative airports near Portland

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

Select flight to Portland Intl. Jetport PWM. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $316
PWM
Portland Intl. Jetport
CheapestClosest
Average driving time to city center8 min
Flights from $316
Flights from Louisville (SDF) to Portland (PWM)
Origin airport
Louisville Intl.
Destination airport
Portland Intl. Jetport
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$222
Distance
887 mi

Louisville to Portland Flights

The cheapest times to fly from Louisville to Portland

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 Louisville to Portland are during the month of October. You can find some of the cheapest flights from Louisville to Portland with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Louisville to Portland

Sunday is one of the best days to book for cheap flights from Louisville to Portland: 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 Louisville to Portland

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 Louisville to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $139 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 Louisville to Portland 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 Louisville to Portland 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.

 

Frequently asked questions

How much does a flight from Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM) cost?
Lock in a cheap one-way flight from $139 or cheap return flight from $223 from Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM)?
October is the least expensive month to fly from SDF to PWM. Timing your trip outside of the busy season is often the key to finding a great deal.
What is the cheapest airline that flies from Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from SDF to PWM. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM)?
There are no daily nonstop flights from Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from SDF to PWM?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on various factors, including the time of year 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 Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM)?
To avoid possible delays on the Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM) route, aim to travel before 3 PM. Later departures are 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 Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM) last-minute?
Booking your ticket from SDF to PWM just before your trip is generally more expensive. However, if there's some wiggle room with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a SDF to PWM flight and hotel package?
You'll generally save money by booking a SDF to PWM flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've chosen your ideal accommodations and flights, you can add extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Louisville Intl. Airport (SDF) to Portland Intl. Jetport Airport (PWM)?
Typically, you're able to cancel or reschedule your SDF to PWM flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you want further details, go to our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.