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Cheap flights from Louisville to Portugal from $345

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 10/14. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
6:12 pm - 9:20 am
SDF
-
LIS
35h 08m
2 stops
Air Canada Logo
10:40 am - 7:01 pm
LIS
-
SDF
37h 21m
2 stops
$784Air Canada
Sat, Oct 31 - Sun, Nov 8
United Airlines Logo
10:05 am - 10:30 am
SDF
-
LIS
19h 25m
1 stop
United Airlines Logo
11:25 am - 7:11 pm
LIS
-
SDF
36h 46m
2 stops
$786United Airlines
Mon, Sep 21 - Thu, Oct 1
United Airlines Logo
5:15 am - 9:20 am
SDF
-
LIS
23h 05m
2 stops
United Airlines Logo
11:25 am - 7:11 pm
LIS
-
SDF
36h 46m
2 stops
$789United Airlines
Mon, Sep 21 - Thu, Oct 1
United Airlines Logo
7:10 am - 10:30 am
SDF
-
LIS
22h 20m
2 stops
United Airlines Logo
11:25 am - 7:11 pm
LIS
-
SDF
36h 46m
2 stops
$790United Airlines
Mon, Sep 21 - Thu, Oct 1
United Airlines Logo
6:00 am - 10:30 am
SDF
-
LIS
23h 30m
1 stop
United Airlines Logo
1:00 pm - 7:11 pm
LIS
-
SDF
35h 11m
2 stops
$791United Airlines
Mon, Sep 21 - Tue, Oct 13
Air Canada Logo
9:00 am - 9:20 am
SDF
-
LIS
19h 20m
2 stops
Air Canada Logo
1:00 pm - 1:15 pm
LIS
-
SDF
29h 15m
2 stops
$793Air Canada
Tue, Sep 22 - Fri, Oct 16
United Airlines Logo
10:05 am - 10:30 am
SDF
-
LIS
19h 25m
1 stop
United Airlines Logo
5:05 am - 11:59 pm
LIS
-
SDF
23h 54m
2 stops
$794United Airlines
Mon, Sep 21 - Thu, Oct 15
United Airlines Logo
1:07 pm - 9:20 am
SDF
-
LIS
15h 13m
2 stops
United Airlines Logo
5:05 am - 11:59 pm
LIS
-
SDF
23h 54m
2 stops
$797United Airlines
Wed, Sep 23 - Thu, Oct 15
Lufthansa Logo
10:05 am - 10:30 am
SDF
-
LIS
19h 25m
1 stop
Lufthansa Logo
10:25 am - 11:49 pm
LIS
-
SDF
18h 24m
1 stop
$805Lufthansa
Mon, Sep 21 - Thu, Oct 1
United Airlines Logo
10:05 am - 10:30 am
SDF
-
LIS
19h 25m
1 stop
United Airlines Logo
12:20 pm - 7:24 pm
LIS
-
SDF
12h 04m
1 stop
$806United Airlines
Mon, Sep 21 - Thu, Oct 1

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Delta flights from Louisville to Portugal

Our best Delta deals on Louisville to Portugal flight tickets
Delta
Sep 22
SDF11:45 amLouisville Intl
18h 00m
2 stops
LIS10:45 amLisbon Humberto Delgado
Oct 15
LIS10:00 amLisbon Humberto Delgado
16h 14m
2 stops
SDF9:14 pmLouisville Intl
$810
Delta
Oct 31
SDF1:50 pmLouisville Intl
15h 10m
1 stop
LIS9:00 amLisbon Humberto Delgado
Nov 8
LIS5:00 amLisbon Humberto Delgado
22h 46m
2 stops
SDF10:46 pmLouisville Intl
$835

Air Canada flights from Louisville to Portugal

Our best Air Canada deals on Louisville to Portugal flight tickets
Air Canada
Oct 31
SDF6:12 pmLouisville Intl
35h 08m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 8
LIS10:40 amLisbon Humberto Delgado
37h 21m
2 stops
SDF7:01 pmLouisville Intl
$784
Air Canada
Sep 22
SDF9:00 amLouisville Intl
19h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 16
LIS1:00 pmLisbon Humberto Delgado
29h 15m
2 stops
SDF1:15 pmLouisville Intl
$793
Air Canada
Dec 16
SDF8:45 amLouisville Intl
17h 10m
2 stops
LIS6:55 amLisbon Humberto Delgado
Dec 29
LIS12:50 pmLisbon Humberto Delgado
36h 24m
2 stops
SDF8:14 pmLouisville Intl
$842

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 July 1, 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

Sat 10/31

6:12 pm-9:20 am

2 stops35h 08m

Lisbon Humberto Delgado

Sun 11/8

10:40 am-7:01 pm

2 stops37h 21m

$784

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 9/21

10:05 am-10:30 am

1 stop19h 25m

Lisbon Humberto Delgado

Thu 10/1

11:25 am-7:11 pm

2 stops36h 46m

$786

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 9/21

5:15 am-9:20 am

2 stops23h 05m

Lisbon Humberto Delgado

Thu 10/1

11:25 am-7:11 pm

2 stops36h 46m

$789

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 9/21

7:10 am-10:30 am

2 stops22h 20m

Lisbon Humberto Delgado

Thu 10/1

11:25 am-7:11 pm

2 stops36h 46m

$790

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 9/21

6:00 am-10:30 am

1 stop23h 30m

Lisbon Humberto Delgado

Tue 10/13

1:00 pm-7:11 pm

2 stops35h 11m

$791

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 9/22

9:00 am-9:20 am

2 stops19h 20m

Lisbon Humberto Delgado

Fri 10/16

1:00 pm-1:15 pm

2 stops29h 15m

$793

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 9/21

10:05 am-10:30 am

1 stop19h 25m

Lisbon Humberto Delgado

Thu 10/15

5:05 am-11:59 pm

2 stops23h 54m

$794

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 9/23

1:07 pm-9:20 am

2 stops15h 13m

Lisbon Humberto Delgado

Thu 10/15

5:05 am-11:59 pm

2 stops23h 54m

$797

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 9/21

10:05 am-10:30 am

1 stop19h 25m

Lisbon Humberto Delgado

Thu 10/1

10:25 am-11:49 pm

1 stop18h 24m

$805
Quickest round-trip

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 9/21

10:05 am-10:30 am

1 stop19h 25m

Lisbon Humberto Delgado

Thu 10/1

12:20 pm-7:24 pm

1 stop12h 04m

$806

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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

15h 18m

Direct flights

None
The fastest flight from Louisville to Portugal takes 15h 18m
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
9,909 reviews
Search United Airlines flights
DeltaPriceFrom $587Free CancellationRating
7.8
8,452 reviews
Search Delta flights
American AirlinesPriceFrom $606Free CancellationRating
7.1
11,766 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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