What airlines fly to Portugal?

United Airlines, American Airlines and British Airways are the top three most popular airlines that fly to Portugal from Louisville according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 5 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Louisville Intl to Portugal?

British Airways, Air France, and Air Canada are the most popular carriers operating from Louisville Intl 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?

There are 2 operators available for flights from Louisville Intl Airport to Portugal as of December 2025.

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.

$426 Cheap Flights from Louisville to Portugal in 2025/26

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8:29 am - 7:55 am

SDF

LIS

18h 26m2 stops

8:20 am - 11:59 pm

LIS

SDF

20h 39m2 stops

$488Multiple Airlines

Thu, Feb 5 - Thu, Feb 12

1:50 pm - 8:10 am

SDF

LIS

13h 20m1 stop

5:00 am - 7:42 pm

LIS

SDF

19h 42m2 stops

$494Lufthansa

Thu, Feb 5 - Thu, Feb 12

1:50 pm - 8:10 am

SDF

LIS

13h 20m1 stop

10:15 am - 7:25 pm

LIS

SDF

14h 10m1 stop

$506Lufthansa

Thu, Feb 5 - Thu, Feb 12

12:00 pm - 6:00 pm

SDF

LIS

25h 00m2 stops

8:45 pm - 9:23 pm

LIS

SDF

29h 38m2 stops

$513Multiple Airlines

Thu, Feb 26 - Sun, Mar 1

11:10 am - 8:10 am

SDF

LIS

16h 00m2 stops

11:20 am - 10:30 pm

LIS

SDF

40h 10m2 stops

$588United Airlines

Fri, Jan 30 - Tue, Feb 3

1:32 pm - 9:55 pm

SDF

LIS

27h 23m2 stops

12:55 pm - 11:19 pm

LIS

SDF

39h 24m2 stops

$606British Airways

Thu, Jan 15 - Mon, Jan 19

8:29 am - 8:10 am

SDF

LIS

18h 41m2 stops

10:15 am - 7:31 pm

LIS

SDF

14h 16m1 stop

$608United Airlines

Fri, Jan 30 - Tue, Feb 3

1:32 pm - 11:50 am

SDF

LIS

17h 18m2 stops

8:45 pm - 11:19 pm

LIS

SDF

31h 34m2 stops

$628Iberia

Thu, Jan 15 - Mon, Jan 19

6:15 am - 8:10 am

SDF

LIS

20h 55m1 stop

5:00 am - 8:09 pm

LIS

SDF

20h 09m2 stops

$640Lufthansa

Thu, Feb 26 - Sun, Mar 1

11:10 am - 9:20 am

SDF

LIS

17h 10m3 stops

11:20 am - 12:59 pm

LIS

SDF

30h 39m2 stops

$649Multiple Airlines

Thu, Jan 15 - Mon, Jan 19

Lufthansa flights from Louisville to Portugal

Our best Lufthansa deals on Louisville to Portugal flight tickets

Lufthansa

Feb 5

SDF1:50 pmLouisville Intl

13h 20m

1 stop

LIS8:10 amLisbon Humberto Delgado

Feb 12

LIS5:00 amLisbon Humberto Delgado

19h 42m

2 stops

SDF7:42 pmLouisville Intl

$494

Find similar

Lufthansa

Feb 5

SDF1:50 pmLouisville Intl

13h 20m

1 stop

LIS8:10 amLisbon Humberto Delgado

Feb 12

LIS10:15 amLisbon Humberto Delgado

14h 10m

1 stop

SDF7:25 pmLouisville Intl

$506

Find similar

Lufthansa

Feb 26

SDF6:15 amLouisville Intl

20h 55m

1 stop

LIS8:10 amLisbon Humberto Delgado

Mar 1

LIS5:00 amLisbon Humberto Delgado

20h 09m

2 stops

SDF8:09 pmLouisville Intl

$640

Find similar

United Airlines flights from Louisville to Portugal

Our best United Airlines deals on Louisville to Portugal flight tickets

United Airlines

Jan 30

SDF11:10 amLouisville Intl

16h 00m

2 stops

LIS8:10 amLisbon Humberto Delgado

Feb 3

LIS11:20 amLisbon Humberto Delgado

40h 10m

2 stops

SDF10:30 pmLouisville Intl

$588

Find similar

United Airlines

Jan 30

SDF8:29 amLouisville Intl

18h 41m

2 stops

LIS8:10 amLisbon Humberto Delgado

Feb 3

LIS10:15 amLisbon Humberto Delgado

14h 16m

1 stop

SDF7:31 pmLouisville Intl

$608

Find similar

United Airlines

Dec 31

SDF2:22 pmLouisville Intl

14h 53m

1 stop

LIS10:15 amLisbon Humberto Delgado

Jan 10

LIS10:15 amLisbon Humberto Delgado

14h 16m

1 stop

SDF7:31 pmLouisville Intl

$895

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 2/5

8:29 am-7:55 am

2 stops18h 26m

Lisbon Humberto Delgado

Thu 2/12

8:20 am-11:59 pm

2 stops20h 39m

$488

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 2/5

1:50 pm-8:10 am

1 stop13h 20m

Lisbon Humberto Delgado

Thu 2/12

5:00 am-7:42 pm

2 stops19h 42m

$494

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 2/5

1:50 pm-8:10 am

1 stop13h 20m

Lisbon Humberto Delgado

Thu 2/12

10:15 am-7:25 pm

1 stop14h 10m

$506

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 2/26

12:00 pm-6:00 pm

2 stops25h 00m

Lisbon Humberto Delgado

Sun 3/1

8:45 pm-9:23 pm

2 stops29h 38m

$513

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Fri 1/30

11:10 am-8:10 am

2 stops16h 00m

Lisbon Humberto Delgado

Tue 2/3

11:20 am-10:30 pm

2 stops40h 10m

$588

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 1/15

1:32 pm-9:55 pm

2 stops27h 23m

Lisbon Humberto Delgado

Mon 1/19

12:55 pm-11:19 pm

2 stops39h 24m

$606

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Fri 1/30

8:29 am-8:10 am

2 stops18h 41m

Lisbon Humberto Delgado

Tue 2/3

10:15 am-7:31 pm

1 stop14h 16m

$608

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 1/15

1:32 pm-11:50 am

2 stops17h 18m

Lisbon Humberto Delgado

Mon 1/19

8:45 pm-11:19 pm

2 stops31h 34m

$628

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 2/26

6:15 am-8:10 am

1 stop20h 55m

Lisbon Humberto Delgado

Sun 3/1

5:00 am-8:09 pm

2 stops20h 09m

$640

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 1/15

11:10 am-9:20 am

3 stops17h 10m

Lisbon Humberto Delgado

Mon 1/19

11:20 am-12:59 pm

2 stops30h 39m

$649

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Louisville is in January. Flight prices, which tend to average around $618, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Louisville during December instead. Flights to Portugal in December, while not as cheap as those in January, still average around $641.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Wednesday is the cheapest day to fly to Portugal from Louisville. The lowest ticket price found for a Wednesday departure recently was $958. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Thursday, with ticket prices averaging around $1,157.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Louisville to Portugal during this time can be as low as $775. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,237 per ticket.

Can stopping save me money on Louisville to Portugal flights?

You could potentially save up to 52% 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	11h 26m
Direct flights	None

The fastest flight from Louisville to Portugal takes 11h 26m

There are no direct flights from Louisville to Portugal. There are no popular flight routes from Louisville to Portugal.

Search flight deals

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?
There are 2 operators available for flights from Louisville Intl Airport to Portugal as of December 2025.
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 Airlines	PriceFrom $595	Free Cancellation	Rating 7.4 9,105 reviews		Search United Airlines flights
American Airlines	PriceFrom $616	Free Cancellation	Rating 7.2 11,054 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

Popular cities in Portugal

Flights to Lisbonfrom $394

Flights to Portofrom $348

Flights to Funchalfrom $421

Flights to Farofrom $421

Flights to Ponta Delgadafrom $411

Flights to Lajesfrom $471

Flights to Hortafrom $580

Flights to Pico Islandfrom $573

Flights to Porto Santofrom $551

Flights to Velasfrom $574

Cheap flights from Louisville to Portugal from $426

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 6/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Louisville to Portugal

Cheap round-trip flights

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Lufthansa flights from Louisville to Portugal

Our best Lufthansa deals on Louisville to Portugal flight tickets

United Airlines flights from Louisville to Portugal

Our best United Airlines deals on Louisville to Portugal flight tickets

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Use the filters below to find and compare flights from Louisville to Portugal that are best for you.

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How to get the cheapest flight ticket from Louisville to Portugal

What is the cheapest month to fly to Portugal?

What is the cheapest day to depart on your flight to Portugal?

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Louisville to Portugal during this time can be as low as $775. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,237 per ticket.

Can stopping save me money on Louisville to Portugal flights?

You could potentially save up to 52% on your flight if you consider stops on a Louisville to Portugal flight.

What is the cheapest airline that flies from Louisville Intl to Portugal?

British Airways, Air France, and Air Canada are the most popular carriers operating from Louisville Intl to Portugal

What airlines fly to Portugal?

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

Direct flights

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

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?

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

Best airlines flying from Louisville to Portugal

Compare and see reviews for airlines that fly from Louisville to Portugal with momondo

Why use momondo?

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

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

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

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

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