PWM - SDF

$239 Find Cheap Flights from Portland to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Louisville departing on 5/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Louisville, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$365
Typical prices: $671-$426
United Airlines
Wed 8/5Sat 8/15
PWM - SDF • 1 stop
Cheapest one-way
$204
American Airlines
Wed 5/27
PWM - SDF • 1 stop
Top airlines
Cheapest • from $365 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Portland and Louisville. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $348 (round-trip)
Shortest trip • 4h 08m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Louisville!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Louisville (PWM-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Louisville

Wed, Aug 5 - Sat, Aug 15
United Airlines Logo
5:15 am - 10:23 am
PWM
-
SDF
5h 08m
1 stop
United Airlines Logo
10:05 am - 2:38 pm
SDF
-
PWM
4h 33m
1 stop
$365United Airlines
Wed, Aug 5 - Sat, Aug 15
United Airlines Logo
5:15 am - 10:23 am
PWM
-
SDF
5h 08m
1 stop
United Airlines Logo
11:00 am - 7:17 pm
SDF
-
PWM
8h 17m
2 stops
$370United Airlines
Wed, Aug 5 - Sat, Aug 15
Southwest Logo
5:45 am - 3:15 pm
PWM
-
SDF
9h 30m
2 stops
Southwest Logo
3:50 pm - 9:00 pm
SDF
-
PWM
5h 10m
1 stop
$380Southwest
Thu, Jul 23 - Tue, Jul 28
American Airlines Logo
6:00 pm - 12:34 am
PWM
-
SDF
6h 34m
1 stop
American Airlines Logo
6:00 am - 12:11 pm
SDF
-
PWM
6h 11m
1 stop
$381American Airlines
Fri, Jun 26 - Mon, Jun 29
United Airlines Logo
5:15 am - 10:23 am
PWM
-
SDF
5h 08m
1 stop
United Airlines Logo
2:10 pm - 9:41 pm
SDF
-
PWM
7h 31m
1 stop
$407United Airlines
Sun, Nov 15 - Thu, Nov 19
Southwest Logo
5:20 am - 3:25 pm
PWM
-
SDF
10h 05m
2 stops
Southwest Logo
5:40 am - 9:55 am
SDF
-
PWM
4h 15m
1 stop
$412Southwest
Mon, Jun 15 - Sun, Jun 21
Delta Logo
1:12 pm - 8:58 pm
PWM
-
SDF
7h 46m
1 stop
Delta Logo
6:00 am - 10:33 am
SDF
-
PWM
4h 33m
1 stop
$417Delta
Wed, Aug 5 - Sat, Aug 15
Southwest Logo
5:45 am - 3:15 pm
PWM
-
SDF
9h 30m
2 stops
Southwest Logo
6:45 am - 3:00 pm
SDF
-
PWM
8h 15m
2 stops
$421Southwest
Fri, Jun 26 - Mon, Jun 29
Southwest Logo
5:35 am - 4:25 pm
PWM
-
SDF
10h 50m
1 stop
Southwest Logo
3:35 pm - 12:05 am
SDF
-
PWM
8h 30m
2 stops
$428Southwest
Thu, Jul 9 - Sat, Jul 11
Southwest Logo
5:20 pm - 12:25 am
PWM
-
SDF
7h 05m
1 stop
Southwest Logo
11:50 am - 9:00 pm
SDF
-
PWM
9h 10m
2 stops
$432Southwest
Booking Insights

KAYAK's insights & trends for Portland to Louisville flights

Get data-powered insights and trends into flights from Portland to Louisville to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Portland, Maine to Louisville?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland, Maine to Louisville departing in August.

What is the cheapest month to fly from Portland to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Louisville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Louisville is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are September and April, where the average cost of round-trip tickets is $538 and $469 respectively.

Good to know

Low seasonJune
Cheapest flight$204
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Portland to Louisville

When to book flights from Portland to Louisville

Are your dates flexible? Find out the best times to travel from Portland to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Louisville

  • What is the cheapest flight from Portland to Louisville?

    In the last 3 days, the lowest price for a flight from Portland to Louisville was $204 for a one-way ticket and $365 for a round-trip.

  • Do I need a passport to fly between Portland and Louisville?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Portland to Louisville?

    Portland and Louisville are both served by 1 main airport. You will leave Portland from Portland and will be arriving at Louisville Intl.

  • Which aircraft models fly most regularly from Portland to Louisville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Louisville?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Portland and Louisville, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Louisville, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Portland to Louisville are Delta and United Airlines. With an average price for the route of $379 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $406 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Portland to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Portland with another airline. Booking your flights between Portland and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Portland to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Portland to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8454 reviews
7.8Entertainment
8.1Boarding
8.5Crew
7.2Food
7.8Comfort
Airline reviews

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

10.0 Excellentangela, May 2026
LGA - PBI
Read more Delta reviews

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

Requested early boarding to disinfect seat, tray table, etc. before general boarding. Instructed to board after wheelchair passengers. Waited on jet bridge behind 12 wheelchair passengers. Stopped immediately after entering plane to wait for gate agent in rear of plane cleaning a seat that was wet, got to my row and found both seats adjacent to mine already occupied, with the lack of room making it impossible for me to clean my own space and defeating the purpose of my boarding early. Cleaned the armrests and tray table as best I could.

Seat bottom cushions are not good. I’m 165# & they hurt my butt. Plenty of legroom.

The wifi experience is awful. I had to try again and again, taking over 30 minutes, to connect to the wifi. I had to watch the same two ads over and over until I was finally successful. Once connected, it was anything but "high speed" and disconnected at least three times during the flight.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

I was downgraded from first class to coach due to an airplane change. They pulled me out of line and I was the very last person to board the plane stuck in the middle seat with no overhead place to put my carry-.on. Very poor customer service.

Seat comfort was poor (no lumbar or lower back support).

The airplane seats were spacious and comfortable, and the flight attendants were friendly and attentive. The food was delicious like never before. The blankets and toiletries were thoughtfully provided. The captain's navigation was steady and reliable. In short, having flown with Starlux, I won't consider any other airline next time.

STOP MAKING THE SEATING SO CRAMPED. WE NEED A PASSENGER BILL OF RIGHTS!

The passenger in front of of me reclined their seat back all the way the entire flight. Their headrest was in my face the entire flight! I barely had room for the little plastic cup of water to fit on my tray table; can you make the seats and space between the rows any smaller??? You can’t even get up to use the restroom! Worst flight I’ve had in a very long time!

We had several flights and they were all on-time and flawless

Everything you need to know for your flight from Portland to Louisville

Information on your arrival and departure airports