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 47% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 7 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, Lufthansa, 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 3 operators available for flights from Louisville Intl Airport to Portugal as of September 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.

$554 Cheap Flights from Louisville to Portugal in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Louisville to Portugal

Round-trip

One-way

Last minute

Cheap round-trip flights

9:00 am - 9:20 amSDF-LIS

43h 20m2 stops

5:00 am - 8:44 pmLIS-SDF

20h 44m2 stops

$554United Airlines

Find Deal

Mon, Nov 10 - Wed, Nov 19

4:28 pm - 12:10 pmSDF-LIS

15h 42m2 stops

6:30 am - 8:19 pmLIS-SDF

18h 49m2 stops

$557American Airlines

Find Deal

Wed, Oct 29 - Wed, Nov 5

9:00 am - 9:20 amSDF-LIS

43h 20m2 stops

10:15 am - 6:52 pmLIS-SDF

13h 37m1 stop

$560United Airlines

Find Deal

Mon, Nov 10 - Wed, Nov 19

3:09 pm - 9:30 pmSDF-LIS

25h 21m2 stops

4:55 pm - 12:06 amLIS-SDF

36h 11m2 stops

$579Scandinavian Airlines

Find Deal

Mon, Nov 10 - Wed, Nov 19

5:20 pm - 9:55 pmSDF-LIS

23h 35m2 stops

8:45 pm - 9:29 pmLIS-SDF

29h 44m2 stops

$582British Airways

Find Deal

Mon, Nov 10 - Thu, Nov 20

4:28 pm - 12:10 pmSDF-LIS

15h 42m2 stops

11:05 am - 9:40 pmLIS-SDF

15h 35m1 stop

$599American Airlines

Find Deal

Wed, Oct 29 - Wed, Nov 5

11:19 am - 6:05 pmSDF-LIS

25h 46m2 stops

8:45 pm - 9:29 pmLIS-SDF

29h 44m2 stops

$609British Airways

Find Deal

Mon, Nov 10 - Thu, Nov 20

11:05 am - 4:05 pmSDF-LIS

24h 00m2 stops

4:55 pm - 10:49 pmLIS-SDF

34h 54m2 stops

$689Scandinavian Airlines

Find Deal

Sat, Dec 6 - Wed, Dec 10

7:20 pm - 10:05 pmSDF-LIS

21h 45m2 stops

10:15 am - 6:52 pmLIS-SDF

12h 37m1 stop

$792Lufthansa

Find Deal

Wed, Oct 15 - Wed, Oct 29

12:14 pm - 8:20 amSDF-LIS

15h 06m1 stop

5:05 am - 8:48 pmLIS-SDF

20h 43m2 stops

$919Lufthansa

Find Deal

Mon, Oct 13 - Sat, Oct 25

Scandinavian Airlines flights from Louisville to Portugal

Our best Scandinavian Airlines deals on Louisville to Portugal flight tickets

Scandinavian Airlines

Nov 10

SDF3:09 pmLouisville Intl

25h 21m

2 stops

LIS9:30 pmLisbon Humberto Delgado

Nov 19

LIS4:55 pmLisbon Humberto Delgado

36h 11m

2 stops

SDF12:06 amLouisville Intl

$579

Find similar

Scandinavian Airlines

Dec 6

SDF11:05 amLouisville Intl

24h 00m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Dec 10

LIS4:55 pmLisbon Humberto Delgado

34h 54m

2 stops

SDF10:49 pmLouisville Intl

$689

Find similar

United Airlines flights from Louisville to Portugal

Our best United Airlines deals on Louisville to Portugal flight tickets

United Airlines

Nov 10

SDF9:00 amLouisville Intl

43h 20m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 19

LIS5:00 amLisbon Humberto Delgado

20h 44m

2 stops

SDF8:44 pmLouisville Intl

$554

Find similar

United Airlines

Nov 10

SDF9:00 amLouisville Intl

43h 20m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 19

LIS10:15 amLisbon Humberto Delgado

13h 37m

1 stop

SDF6:52 pmLouisville Intl

$560

Find similar

United Airlines

Mar 9

SDF9:35 amLouisville Intl

20h 40m

1 stop

LIS10:15 amLisbon Humberto Delgado

Mar 23

LIS5:00 amLisbon Humberto Delgado

45h 09m

2 stops

SDF10:09 pmLouisville Intl

$568

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 11/10

9:00 am-9:20 am

2 stops43h 20m

Lisbon Humberto Delgado

Wed 11/19

5:00 am-8:44 pm

2 stops20h 44m

$554

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/29

4:28 pm-12:10 pm

2 stops15h 42m

Lisbon Humberto Delgado

Wed 11/5

6:30 am-8:19 pm

2 stops18h 49m

$557

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 11/10

9:00 am-9:20 am

2 stops43h 20m

Lisbon Humberto Delgado

Wed 11/19

10:15 am-6:52 pm

1 stop13h 37m

$560

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 11/10

3:09 pm-9:30 pm

2 stops25h 21m

Lisbon Humberto Delgado

Wed 11/19

4:55 pm-12:06 am

2 stops36h 11m

$579

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 11/10

5:20 pm-9:55 pm

2 stops23h 35m

Lisbon Humberto Delgado

Thu 11/20

8:45 pm-9:29 pm

2 stops29h 44m

$582

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/29

4:28 pm-12:10 pm

2 stops15h 42m

Lisbon Humberto Delgado

Wed 11/5

11:05 am-9:40 pm

1 stop15h 35m

$599

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 11/10

11:19 am-6:05 pm

2 stops25h 46m

Lisbon Humberto Delgado

Thu 11/20

8:45 pm-9:29 pm

2 stops29h 44m

$609

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Sat 12/6

11:05 am-4:05 pm

2 stops24h 00m

Lisbon Humberto Delgado

Wed 12/10

4:55 pm-10:49 pm

2 stops34h 54m

$689

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/15

7:20 pm-10:05 pm

2 stops21h 45m

Lisbon Humberto Delgado

Wed 10/29

10:15 am-6:52 pm

1 stop12h 37m

$792

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 10/13

12:14 pm-8:20 am

1 stop15h 06m

Lisbon Humberto Delgado

Sat 10/25

5:05 am-8:48 pm

2 stops20h 43m

$919

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 December. Flight prices, which tend to average around $641, 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 $666.

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 39% 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

Direct flights	None

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 3 operators available for flights from Louisville Intl Airport to Portugal as of September 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 $603	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $618	Free Cancellation	Rating 7.4 8,929 reviews	Search United Airlines flights
Lufthansa	PriceFrom $1,014	Free Cancellation	Rating 6.8 7,407 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

Find my bookings

Get notified when prices go down

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

1 adult

Wed 10/15

Wed 10/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $359

Flights to Portofrom $355

Flights to Funchalfrom $380

Flights to Farofrom $403

Flights to Ponta Delgadafrom $423

Flights to Lajesfrom $425

Flights to Hortafrom $566

Flights to Pico Islandfrom $563

Flights to Porto Santofrom $563

Flights to Velasfrom $730

Cheap flights from Louisville to Portugal from $554

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Portugal departing on 11/10. 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

United Airlines flights from Louisville to Portugal

Our best United Airlines deals on Louisville to Portugal flight tickets

momondo Fare Finder

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 39% 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, Lufthansa, 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

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