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Cheap flights from Louisville to Portugal from $367

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Portugal departing on 7/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Louisville to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:45 am - 8:10 am
SDF
-
LIS
19h 25m
1 stop
United Airlines Logo
1:00 pm - 7:34 pm
LIS
-
SDF
35h 34m
2 stops
$801United Airlines
Wed, Oct 28 - Sat, Nov 7
American Airlines Logo
7:14 pm - 2:50 pm
SDF
-
LIS
15h 36m
2 stops
American Airlines Logo
6:30 am - 6:38 pm
LIS
-
SDF
17h 08m
2 stops
$805American Airlines
Wed, Oct 28 - Sat, Nov 7
American Airlines Logo
5:00 pm - 12:10 pm
SDF
-
LIS
15h 10m
2 stops
American Airlines Logo
6:30 am - 6:38 pm
LIS
-
SDF
17h 08m
2 stops
$806American Airlines
Wed, Oct 28 - Sat, Nov 7
United Airlines Logo
8:45 am - 8:10 am
SDF
-
LIS
19h 25m
1 stop
United Airlines Logo
10:15 am - 11:15 pm
LIS
-
SDF
18h 00m
1 stop
$816United Airlines
Wed, Oct 28 - Sat, Nov 7
United Airlines Logo
11:13 am - 8:20 am
SDF
-
LIS
16h 07m
1 stop
United Airlines Logo
1:00 pm - 5:49 pm
LIS
-
SDF
32h 49m
2 stops
$858United Airlines
Wed, Oct 21 - Sat, Oct 31
Air Canada Logo
11:13 am - 9:20 am
SDF
-
LIS
17h 07m
2 stops
Air Canada Logo
1:00 pm - 5:49 pm
LIS
-
SDF
32h 49m
2 stops
$861Air Canada
Wed, Oct 21 - Sat, Oct 31
United Airlines Logo
11:13 am - 8:20 am
SDF
-
LIS
16h 07m
1 stop
United Airlines Logo
11:55 am - 7:34 pm
LIS
-
SDF
11h 39m
1 stop
$873United Airlines
Wed, Oct 21 - Sat, Oct 31
Multiple Airlines Logo
10:25 am - 9:20 am
SDF
-
LIS
17h 55m
3 stops
Multiple Airlines Logo
11:20 am - 12:05 am
LIS
-
SDF
16h 45m
2 stops
$888Multiple Airlines
Wed, Oct 21 - Sat, Oct 31
United Airlines Logo
1:56 pm - 10:30 am
SDF
-
LIS
15h 34m
1 stop
United Airlines Logo
11:25 am - 7:07 pm
LIS
-
SDF
36h 42m
2 stops
$900United Airlines
Tue, Aug 11 - Wed, Aug 19
Air Canada Logo
10:43 am - 9:20 am
SDF
-
LIS
17h 37m
2 stops
Air Canada Logo
11:25 am - 8:36 pm
LIS
-
SDF
38h 11m
2 stops
$903Air Canada
Tue, Aug 11 - Wed, Aug 19

United Airlines flights from Louisville to Portugal

Our best United Airlines deals on Louisville to Portugal flight tickets
United Airlines
Oct 28
SDF8:45 amLouisville Intl
19h 25m
1 stop
LIS8:10 amLisbon Humberto Delgado
Nov 7
LIS1:00 pmLisbon Humberto Delgado
35h 34m
2 stops
SDF7:34 pmLouisville Intl
$801
United Airlines
Oct 28
SDF8:45 amLouisville Intl
19h 25m
1 stop
LIS8:10 amLisbon Humberto Delgado
Nov 7
LIS10:15 amLisbon Humberto Delgado
18h 00m
1 stop
SDF11:15 pmLouisville Intl
$816
United Airlines
Oct 21
SDF11:13 amLouisville Intl
16h 07m
1 stop
LIS8:20 amLisbon Humberto Delgado
Oct 31
LIS1:00 pmLisbon Humberto Delgado
32h 49m
2 stops
SDF5:49 pmLouisville Intl
$858

American Airlines flights from Louisville to Portugal

Our best American Airlines deals on Louisville to Portugal flight tickets
American Airlines
Oct 28
SDF7:14 pmLouisville Intl
15h 36m
2 stops
LIS2:50 pmLisbon Humberto Delgado
Nov 7
LIS6:30 amLisbon Humberto Delgado
17h 08m
2 stops
SDF6:38 pmLouisville Intl
$805
American Airlines
Oct 28
SDF5:00 pmLouisville Intl
15h 10m
2 stops
LIS12:10 pmLisbon Humberto Delgado
Nov 7
LIS6:30 amLisbon Humberto Delgado
17h 08m
2 stops
SDF6:38 pmLouisville Intl
$806
American Airlines
Aug 11
SDF7:31 amLouisville Intl
20h 34m
1 stop
LIS9:05 amLisbon Humberto Delgado
Aug 19
LIS11:05 amLisbon Humberto Delgado
16h 55m
1 stop
SDF11:00 pmLouisville Intl
$920

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 22, 2026.
Use the filters below to find and compare flights from Louisville to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/28

8:45 am-8:10 am

1 stop19h 25m

Lisbon Humberto Delgado

Sat 11/7

1:00 pm-7:34 pm

2 stops35h 34m

$801

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/28

7:14 pm-2:50 pm

2 stops15h 36m

Lisbon Humberto Delgado

Sat 11/7

6:30 am-6:38 pm

2 stops17h 08m

$805

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/28

5:00 pm-12:10 pm

2 stops15h 10m

Lisbon Humberto Delgado

Sat 11/7

6:30 am-6:38 pm

2 stops17h 08m

$806

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/28

8:45 am-8:10 am

1 stop19h 25m

Lisbon Humberto Delgado

Sat 11/7

10:15 am-11:15 pm

1 stop18h 00m

$816

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/21

11:13 am-8:20 am

1 stop16h 07m

Lisbon Humberto Delgado

Sat 10/31

1:00 pm-5:49 pm

2 stops32h 49m

$858

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/21

11:13 am-9:20 am

2 stops17h 07m

Lisbon Humberto Delgado

Sat 10/31

1:00 pm-5:49 pm

2 stops32h 49m

$861
Quickest round-trip

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/21

11:13 am-8:20 am

1 stop16h 07m

Lisbon Humberto Delgado

Sat 10/31

11:55 am-7:34 pm

1 stop11h 39m

$873

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/21

10:25 am-9:20 am

3 stops17h 55m

Lisbon Humberto Delgado

Sat 10/31

11:20 am-12:05 am

2 stops16h 45m

$888

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 8/11

1:56 pm-10:30 am

1 stop15h 34m

Lisbon Humberto Delgado

Wed 8/19

11:25 am-7:07 pm

2 stops36h 42m

$900

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 8/11

10:43 am-9:20 am

2 stops17h 37m

Lisbon Humberto Delgado

Wed 8/19

11:25 am-8:36 pm

2 stops38h 11m

$903

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

How to get the cheapest flight ticket from Louisville to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Louisville is in December. Flight prices, which tend to average around $449, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of December, then book flights to Portugal from Louisville during January instead. Flights to Portugal in January, while not as cheap as those in December, still average around $451.

Can stopping save me money on Louisville to Portugal flights?

You could potentially save up to 28% on your flight if you consider stops on a Louisville to Portugal flight.

Cheap Louisville to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Portugal

Fastest flight time

13h 05m

Direct flights

None
The fastest flight from Louisville to Portugal takes 13h 05m
There are no direct flights from Louisville to Portugal. There are no popular flight routes from Louisville to Portugal.
Search flight deals

Frequently asked questions about flying from Louisville to Portugal

  • When did momondo last update prices for flights from Louisville Intl Airport to Portugal?

    Prices for flights from Louisville Intl Airport to Portugal are refreshed on a daily basis.

  • How many operators does momondo search for flights from Louisville Intl Airport to Portugal?

  • How old do you have to be to fly from Louisville Intl Airport to Portugal?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Louisville Intl Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Louisville to Portugal

Compare and see reviews for airlines that fly from Louisville to Portugal with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $543Free CancellationRating
7.4
9,751 reviews
Search United Airlines flights
DeltaPriceFrom $587Free CancellationRating
7.9
8,449 reviews
Search Delta flights
American AirlinesPriceFrom $603Free CancellationRating
7.1
11,644 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Portugal?

Finding the right flight to Portugal from Louisville is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portugal quick and easy, saving you time and money.

Can I find flights from Louisville to Portugal with flexible booking policies on momondo?

Flights from Louisville to Portugal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Louisville to Portugal?

Once all potential Louisville to Portugal flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Louisville to Portugal right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portugal, momondo offers a useful price alert feature which will track prices for flights to Portugal from Louisville and alert you when they change.

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to Portugal

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Popular flights according to clicks in the last 7 days on momondo
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