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

Lufthansa, American Airlines, and United Airlines are the most popular carriers operating from Louisville Intl to Portugal

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 44% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 8 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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 3 operators available for flights from Louisville Intl Airport to Portugal as of July 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.

$304 Cheap Flights from Louisville to Portugal in 2025

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Find the cheapest flights from Louisville to Portugal

Round-trip

One-way

Last minute

Cheap round-trip flights

5:45 pm - 4:05 pmSDF-LIS

17h 20m2 stops

7:00 pm - 11:56 pmLIS-SDF

33h 56m2 stops

$644Scandinavian Airlines

Find Deal

Sat, Dec 6 - Wed, Dec 10

5:45 pm - 4:05 pmSDF-LIS

17h 20m2 stops

6:55 am - 10:30 pmLIS-SDF

20h 35m2 stops

$673Scandinavian Airlines

Find Deal

Sat, Nov 15 - Fri, Nov 21

10:55 am - 11:05 amSDF-LIS

19h 10m2 stops

11:55 am - 9:59 amLIS-SDF

26h 04m2 stops

$691United Airlines

Find Deal

Wed, Oct 15 - Wed, Oct 29

9:55 am - 11:05 amSDF-LIS

20h 10m2 stops

10:15 am - 9:59 amLIS-SDF

27h 44m2 stops

$692United Airlines

Find Deal

Wed, Oct 15 - Wed, Oct 29

6:30 pm - 9:05 amSDF-LIS

9h 35m1 stop

11:05 am - 5:54 pmLIS-SDF

11h 49m1 stop

$749American Airlines

Find Deal

Mon, Sep 22 - Tue, Oct 7

7:33 pm - 5:50 pmSDF-LIS

17h 17m2 stops

5:00 am - 5:24 pmLIS-SDF

17h 24m2 stops

$821Delta

Find Deal

Mon, Sep 22 - Tue, Oct 7

7:20 pm - 11:30 pmSDF-LIS

23h 10m2 stops

12:20 pm - 8:48 pmLIS-SDF

13h 28m1 stop

$878Lufthansa

Find Deal

Wed, Oct 1 - Wed, Oct 22

7:20 pm - 9:50 pmSDF-LIS

21h 30m2 stops

5:05 am - 8:48 pmLIS-SDF

20h 43m2 stops

$896Lufthansa

Find Deal

Sat, Oct 4 - Sat, Oct 11

5:00 pm - 10:45 amSDF-LIS

12h 45m1 stop

5:00 am - 9:48 pmLIS-SDF

21h 48m2 stops

$914Delta

Find Deal

Sat, Oct 4 - Sat, Oct 11

3:35 pm - 9:05 amSDF-LIS

12h 30m1 stop

11:05 am - 9:17 pmLIS-SDF

14h 12m1 stop

$922American Airlines

Find Deal

Wed, Oct 15 - Wed, Oct 29

Scandinavian Airlines flights from Louisville to Portugal

Our best Scandinavian Airlines deals on Louisville to Portugal flight tickets

Scandinavian Airlines

Dec 6

SDF5:45 pmLouisville Intl

17h 20m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Dec 10

LIS7:00 pmLisbon Humberto Delgado

33h 56m

2 stops

SDF11:56 pmLouisville Intl

$644

Find similar

Scandinavian Airlines

Nov 15

SDF5:45 pmLouisville Intl

17h 20m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 21

LIS6:55 amLisbon Humberto Delgado

20h 35m

2 stops

SDF10:30 pmLouisville Intl

$673

Find similar

Scandinavian Airlines

Oct 18

SDF11:20 amLouisville Intl

40h 40m

2 stops

LIS9:00 amLisbon Humberto Delgado

Oct 24

LIS6:45 amLisbon Humberto Delgado

22h 14m

2 stops

SDF11:59 pmLouisville Intl

$773

Find similar

American Airlines flights from Louisville to Portugal

Our best American Airlines deals on Louisville to Portugal flight tickets

American Airlines

Sep 22

SDF6:30 pmLouisville Intl

9h 35m

1 stop

LIS9:05 amLisbon Humberto Delgado

Oct 7

LIS11:05 amLisbon Humberto Delgado

11h 49m

1 stop

SDF5:54 pmLouisville Intl

$749

Find similar

American Airlines

Oct 15

SDF3:35 pmLouisville Intl

12h 30m

1 stop

LIS9:05 amLisbon Humberto Delgado

Oct 29

LIS11:05 amLisbon Humberto Delgado

14h 12m

1 stop

SDF9:17 pmLouisville Intl

$922

Find similar

American Airlines

Oct 15

SDF7:33 amLouisville Intl

20h 32m

1 stop

LIS9:05 amLisbon Humberto Delgado

Oct 29

LIS11:05 amLisbon Humberto Delgado

14h 12m

1 stop

SDF9:17 pmLouisville Intl

$923

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Sat 12/6

5:45 pm-4:05 pm

2 stops17h 20m

Lisbon Humberto Delgado

Wed 12/10

7:00 pm-11:56 pm

2 stops33h 56m

$644

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Sat 11/15

5:45 pm-4:05 pm

2 stops17h 20m

Lisbon Humberto Delgado

Fri 11/21

6:55 am-10:30 pm

2 stops20h 35m

$673

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/15

10:55 am-11:05 am

2 stops19h 10m

Lisbon Humberto Delgado

Wed 10/29

11:55 am-9:59 am

2 stops26h 04m

$691

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/15

9:55 am-11:05 am

2 stops20h 10m

Lisbon Humberto Delgado

Wed 10/29

10:15 am-9:59 am

2 stops27h 44m

$692

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 9/22

6:30 pm-9:05 am

1 stop9h 35m

Lisbon Humberto Delgado

Tue 10/7

11:05 am-5:54 pm

1 stop11h 49m

$749

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 9/22

7:33 pm-5:50 pm

2 stops17h 17m

Lisbon Humberto Delgado

Tue 10/7

5:00 am-5:24 pm

2 stops17h 24m

$821

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/1

7:20 pm-11:30 pm

2 stops23h 10m

Lisbon Humberto Delgado

Wed 10/22

12:20 pm-8:48 pm

1 stop13h 28m

$878

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Sat 10/4

7:20 pm-9:50 pm

2 stops21h 30m

Lisbon Humberto Delgado

Sat 10/11

5:05 am-8:48 pm

2 stops20h 43m

$896

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Sat 10/4

5:00 pm-10:45 am

1 stop12h 45m

Lisbon Humberto Delgado

Sat 10/11

5:00 am-9:48 pm

2 stops21h 48m

$914

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/15

3:35 pm-9:05 am

1 stop12h 30m

Lisbon Humberto Delgado

Wed 10/29

11:05 am-9:17 pm

1 stop14h 12m

$922

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 $666, 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 $687.

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 15% 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

Best Price Found	$304
Fastest flight time	9h 35m
Direct flights	None
Airports in Portugal	1 airport

The best one-way flight to Portugal from Louisville in the past 72 hours is $304. The best round-trip flight deal from Louisville to Portugal found on momondo in the last 72 hours is $644.

The fastest flight from Louisville to Portugal takes 9h 35m

There are no direct flights from Louisville to Portugal. Popular non-direct route for this connection is Louisville Intl Airport - Lisbon Humberto Delgado Airport.

There is 1 airport near Portugal: Lisbon Humberto Delgado (LIS)

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 3 operators available for flights from Louisville Intl Airport to Portugal as of July 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
American Airlines	PriceFrom $600	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $618	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Delta	PriceFrom $677	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Lufthansa	PriceFrom $859	Free Cancellation	Rating 6.8 7,275 reviews	Search Lufthansa 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.

Start using Trips

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Get notified when prices go down

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

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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $367

Flights to Portofrom $351

Flights to Funchalfrom $422

Flights to Farofrom $426

Flights to Ponta Delgadafrom $434

Flights to Lajesfrom $445

Flights to Hortafrom $591

Flights to Pico Islandfrom $447

Flights to Porto Santofrom $422

Flights to Velasfrom $506

Cheap flights from Louisville to Portugal from $304

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 10/1. 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

Cheap one-way flights

Cheap last minute flights

Scandinavian Airlines flights from Louisville to Portugal

Our best Scandinavian Airlines deals on Louisville to Portugal flight tickets

American Airlines flights from Louisville to Portugal

Our best American 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.

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?

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 15% 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?

Lufthansa, American Airlines, and United Airlines 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

Best Price Found

Fastest flight time

Direct flights

Airports in Portugal

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