$697 Find Cheap Flights from Louisville to Portugal

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to Portugal departing on 4/24. 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

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Book Cheap Louisville to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville to Portugal 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 Louisville to Portugal

ج, أبريل 24 - ج, مايو 1
Iberia Logo
11:16 am - 11:25 pm
SDF
-
LIS
31h 09m
2 stops
Iberia Logo
8:45 pm - 9:30 pm
LIS
-
SDF
29h 45m
2 stops
$697Iberia
ث, أبريل 7 - ث, أبريل 14
United Airlines Logo
9:55 am - 10:30 am
SDF
-
LIS
19h 35m
1 stop
United Airlines Logo
11:25 am - 4:41 pm
LIS
-
SDF
34h 16m
2 stops
$706United Airlines
ث, أبريل 7 - ث, أبريل 14
United Airlines Logo
1:55 pm - 10:30 am
SDF
-
LIS
15h 35m
2 stops
United Airlines Logo
11:25 am - 1:11 pm
LIS
-
SDF
30h 46m
2 stops
$710United Airlines
س, مايو 2 - ج, مايو 15
Delta Logo
6:08 pm - 5:50 pm
SDF
-
LIS
18h 42m
2 stops
Delta Logo
5:00 am - 10:36 pm
LIS
-
SDF
22h 36m
2 stops
$714Delta
ث, أبريل 7 - ث, أبريل 14
American Airlines Logo
4:35 pm - 2:30 pm
SDF
-
LIS
16h 55m
2 stops
American Airlines Logo
8:25 am - 9:30 pm
LIS
-
SDF
18h 05m
2 stops
$715American Airlines
ث, أبريل 7 - ث, أبريل 14
American Airlines Logo
1:18 pm - 9:05 am
SDF
-
LIS
14h 47m
1 stop
American Airlines Logo
8:25 am - 9:30 pm
LIS
-
SDF
18h 05m
2 stops
$718American Airlines
ث, أبريل 7 - ث, أبريل 14
United Airlines Logo
9:55 am - 10:30 am
SDF
-
LIS
19h 35m
1 stop
United Airlines Logo
12:20 pm - 7:42 pm
LIS
-
SDF
12h 22m
1 stop
$726United Airlines
ج, أبريل 24 - ج, مايو 1
United Airlines Logo
10:00 am - 11:45 am
SDF
-
LIS
20h 45m
2 stops
United Airlines Logo
12:20 pm - 2:47 pm
LIS
-
SDF
31h 27m
1 stop
$746United Airlines
س, مايو 2 - ج, مايو 15
Multiple Airlines Logo
2:04 pm - 11:15 am
SDF
-
LIS
16h 11m
2 stops
Multiple Airlines Logo
5:00 am - 5:01 pm
LIS
-
SDF
17h 01m
2 stops
$764Multiple Airlines
ث, أبريل 7 - ث, أبريل 14
American Airlines Logo
4:35 pm - 2:30 pm
SDF
-
LIS
16h 55m
2 stops
American Airlines Logo
8:25 am - 9:30 pm
LIS
-
SDF
18h 05m
2 stops
$765American Airlines
Booking Insights

KAYAK's insights & trends for Louisville to Portugal flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Louisville to Portugal, 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 Louisville to Portugal is December, when tickets cost $641 (return) on average. On the other hand, the most expensive months are May and July, when the average cost of round-trip tickets is $1,326 and $1,203 respectively.

Good to know

Low seasonJanuary
Cheapest flight$697
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Louisville to Lisbon

FAQs - booking Portugal flights

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

    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 Louisville to Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Louisville to Portugal 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 Louisville to Portugal?

    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 from Louisville to Portugal with an airline and back with another airline.

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

    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 from Louisville to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Louisville to Portugal

 
Need help choosing which airline to fly with from Louisville to Portugal? 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.
7.4
United AirlinesOverall score based on 9484 reviews
7.7Boarding
7.3Comfort
6.6Food
8.1Crew
7.1Entertainment
Airline reviews

Flights were on time. Free Wifi on plane. Everything was well organized.

10.0 ExcellentRoman, Mar 2026
PNS - ORD
Read more United Airlines reviews

Flights were on time. Free Wifi on plane. Everything was well organized.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

We had excellent customer service despite the chaos at George Bush airport in Houston!

It isvvery small flight. No leg room . No space to put my personal item at feet.

I will never fly ANA again. They lost one of my large pieces of checked luggage, the heaviest one with the most valuable items in it, and they said they will not send me an email unless they can't find it, even though the paper they gave me to track the status of my lost luggage requires a code from an email they are supposed to send me so I can do baggage tracing. They claim to be an international airline, but they also insist on calling a Japanese telephone number to confirm where to send the lost baggage if they find it. It is impossible to find an actual contact email address for customer support on their website, and their AI chatbot is unhelpful, directing you to a webpage that says it is for contact information but does not have any actual email addresses or phone numbers listed on it. My seat in economy did not recline at all, even though I was not sitting in an exit row nor the very back row. I had to sit in the fully upright position for over ten hours of international travel. Awful experience overall.

No seat back entertainment. And app had a hard time getting entertainment loaded.

ticket agent lady wás very helpful , she arranged wheel chair for my elderly mother

Didn't make the flight because the first leg of my flight was canceled and the next leg was already booked.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

The flight attendant in business class was excellent! Professional, friendly and attentive.

Delays with no explanation. It could have been handled better.

Ceiling fell down and had to have maintenance come and duct tape it up. No WiFi on the flight.

A first class seat should fit a fat person, and this doesn't. The trays in the armrest are less functional than an ordinary tray in the back of the seat.

The flight attendant was friendly and efficient. The temperature was kept nice and cool. The plane was nice, but filthy. There were visible spills on my tray table. The gate agent was somewhat rude with her announcements and in speaking with other customers.

I appreciate that I finally got the seat I paid extra for this time. Thank you

I would have liked a pillow. The vegetarian wrap and oaten cake was good.

I would have liked vegetarian and gluten free options for evening dinner time flight. I would have like a pillow on the international overnight flight . The veg wrap and oaten desert on the international flight was good

The experience at checkin for my American Airlines flight from Sacramento to LAX was very good including the assistance I received in getting my bags checked in and boarding passes printed. Was pleasantly surprised the my bags were checked through all the way to my destination at Clark International Airport in Angeles, Philippines.

Absolutely terrible. Would never fly American again. 2 deplaned incidents and delayed by close to 24 hours. $12 meal voucher for first class passengers was an insult to the injury. Pathetic.

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

Information on your arrival and departure airports