PDX - SDF

$164 Find Cheap Flights from Portland to Louisville - Compare and Save

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 11/4. 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 21% 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
$327
Typical prices: $324-$503
Delta
Tue 9/15Sat 9/19
PDX - SDF • 1 stop
Cheapest one-way
$164
Typical prices: $158-$248
Delta
Wed 11/4
PDX - SDF • 1 stop
Top airlines
Cheapest • from $327 (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 $454 (round-trip)
Shortest trip • 6h 30m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 48% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% 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 (PDX-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

Tue, Sep 15 - Sat, Sep 19
Delta Logo
12:25 am - 11:54 am
PDX
-
SDF
8h 29m
1 stop
Delta Logo
12:34 pm - 5:31 pm
SDF
-
PDX
7h 57m
1 stop
$327Delta
Wed, Sep 9 - Wed, Sep 16
Southwest Logo
1:05 pm - 11:00 pm
PDX
-
SDF
6h 55m
1 stop
Southwest Logo
11:50 am - 6:15 pm
SDF
-
PDX
9h 25m
1 stop
$328Southwest
Wed, Jul 29 - Wed, Aug 5
Delta Logo
10:55 pm - 10:29 am
PDX
-
SDF
8h 34m
1 stop
Delta Logo
12:35 pm - 5:34 pm
SDF
-
PDX
7h 59m
1 stop
$330Delta
Tue, Jul 21 - Tue, Jul 28
American Airlines Logo
11:15 pm - 10:03 am
PDX
-
SDF
7h 48m
1 stop
American Airlines Logo
7:10 pm - 12:50 am
SDF
-
PDX
8h 40m
1 stop
$333American Airlines
Wed, Sep 16 - Mon, Sep 21
Southwest Logo
1:25 pm - 10:30 pm
PDX
-
SDF
6h 05m
1 stop
Southwest Logo
7:10 pm - 11:05 pm
SDF
-
PDX
6h 55m
1 stop
$354Southwest
Tue, Jul 28 - Sat, Aug 1
Delta Logo
10:55 pm - 10:29 am
PDX
-
SDF
8h 34m
1 stop
Delta Logo
4:28 pm - 8:15 pm
SDF
-
PDX
6h 47m
1 stop
$355Delta
Tue, Sep 15 - Sat, Sep 19
Delta Logo
12:25 am - 11:54 am
PDX
-
SDF
8h 29m
1 stop
Delta Logo
12:34 pm - 5:31 pm
SDF
-
PDX
7h 57m
1 stop
$359Delta
Mon, Nov 2 - Sat, Nov 7
Southwest Logo
5:10 am - 5:30 pm
PDX
-
SDF
9h 20m
2 stops
Southwest Logo
8:40 am - 2:40 pm
SDF
-
PDX
9h 00m
1 stop
$360Southwest
Mon, Nov 2 - Sat, Nov 7
Southwest Logo
5:10 am - 5:30 pm
PDX
-
SDF
9h 20m
2 stops
Southwest Logo
7:10 am - 2:20 pm
SDF
-
PDX
10h 10m
2 stops
$365Southwest
Tue, Aug 11 - Thu, Aug 13
United Airlines Logo
10:50 am - 10:31 pm
PDX
-
SDF
8h 41m
1 stop
United Airlines Logo
5:15 am - 9:29 am
SDF
-
PDX
7h 14m
1 stop
$368United Airlines
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 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 to Louisville departing in September.

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 October, where tickets cost $339 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $586 and $528 respectively.

How far in advance should I book a flight from Portland to Louisville?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Portland to Louisville, you should book around 4 weeks before departure, which saves you about 48% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$164
Most popular time to fly and prices are also 26% 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 5 days, the lowest price for a flight from Portland to Louisville was $164 for a one-way ticket and $327 for a round-trip.

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

    No

  • 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?

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

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

    The two airlines most popular with KAYAK users for flights from Portland to Louisville are Southwest and Delta. With an average price for the route of $462 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $468 and an overall rating of 7.8.

  • 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 4 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
SouthwestOverall score based on 4246 reviews
8.6Crew
8.0Comfort
7.5Entertainment
7.0Food
8.1Boarding
Airline reviews

SW can't get their wifi right. I upgrade to insure wifi service but the last two trips had intermittent service. Not worth the extra costs.

6.0 GoodAnonymous, Jun 2026
TPA - DAL
Read more Southwest reviews

SW can't get their wifi right. I upgrade to insure wifi service but the last two trips had intermittent service. Not worth the extra costs.

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

Crew was rude, flight was late, wifi didn't work, no food, basically nothing about this flight was good.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

The seats were a bit cramped and worn, but otherwise okay.

It was really nice! I appreciate the gate attendant allowing families with small children to board early on in the process… that was very helpful! The internet service didn’t work with the app I was trying to use even though I paid the $8… other than that it was great! Oh and I should’ve asked for the whole cranberry cocktail can. That cup was about 2 sips…

Since the flight wasn’t full, we had some extra room. Crew was great

I liked the boarding process with our loading group and numbers. I disliked that I couldn't guarantee our seats together. I didn't like that the Internet costs $8/ flight, but did love all the inflight options available through their app. I disliked no charging station at my seat for a 3+ hour flight.

Great! Although the flight was about 40 minutes delayed, the crew did a good job getting everything boarded quickly and efficiently.

The CRJ-900 was clean but the overhead air vents were broken in our First Class row, making the cabin very hot until about 30 mins into the flight. The flight attendants were both extremely apologetic and accommodating though so that is why I rated the flight as very good. They checked on us many times and truly showed they cared. The snacks for an hour and a half flight could be better. Would be nice if there was a small plated meal over convenient store snacks. WiFi also was not working. And it would be nice if Delta had adjustable headrests on these planes.

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.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

Second flight in a row where the entertainment system is broken. 5 hour long flight with no entertainment and flight attendants did not seem interested in resolving the matter. Very shocked to be treated this poorly considering I paid for a first class experience and have Diamond Medallion status.

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

My seat had no padding, it was literally plywood with a plastic cover. I could not change seats on my 10 hour flight. My excitement for this trip helped me deal with the pain.

The flight was great. The crew were a little terse about the size of my bag. It fit fine.

The flights were on time- Great service Would have liked more options for food choices.

The brakes on the A220 are sensitive and uncomfortably grabby

Short flight, but no drink/snack service. The flights both going and coming were delayed.

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

We had a 90 minute delay due to equipment failure that was detected just before we took off. United rebooked my connecting flight.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

Flight cancelled because of the grounded 737s. United was good about it and got us onto a later Alaska Airlines flight to Oakland (not San Francisco as originally intended). Had to go through security again and my wife dropped her MacBook Pro, which broke, a $2,500 whoopsie. But we made it home.

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

The gate got changed several times and the flight was delayed over an hour. Awful experience

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

No Snacks or Entertainment. The flight was short, snacks should still be given.

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

As smooth as you can expect. Some issues with boarding because the previous plane took forever to deplane but overall, a good experience.

DFW-LHR Toilets not kept clean Too cramped. Aisles so narrow crew were constantly banging into people on the aisle seats. Even then, the carts used are reduced width. Other than that it was a decent flight on both legs

Everything was fine. Flight boarded and departed on time. Seating was spacious enough for my carryon to fit under the seat in front of me. No complaints at all. Flight even arrived early.

Boston ticket agent Cheryl Porter is WONDERFUL. Our Iberia flight to Barcelona was cancelled the morning we were scheduled to leave and Cheryl was our super hero - she found us seats on a flight to London and on to Barcelona. Truly a “can-do” attitude which we appreciated so much after the Iberia ticket agents told us there was “absolutely nothing they could do”. (As did the customer service agents at Iberia’s call center) Ms Porter is truly a wonderful person who genuinely cares about travelers!

Nothing wrong on this flight but nothing special. It was oversold and they had to bump people which is always bad.

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

Information on your arrival and departure airports