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Portugal

$637+ Cheap flights from Louisville (SDF) to Portugal

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LIS
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Louisville to Portugal

Keep the following information in mind while searching for Louisville to Portugal flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$670
(Booking.com)

Popular in

June

Cheapest in

January

Average price

$1,312
Provider with most accurate pricing for Louisville Intl-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Lisbon Humberto Delgado flights.
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From Louisville Intl to Portugal
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Highest demand for flights based on searches. 19% potential increase in price ($246 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Louisville to Portugal

Cheapest flights from Louisville to Portugal
Explore the most affordable flight options available from Louisville to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:55 pmSDF - LIS
1 stop15h 20mUnited Airlines
Sun 11/2311:00 amLIS - SDF
2 stops34h 49mUnited Airlines
Deal found 4/30$637
This Justfly.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:00 amSDF - LIS
2 stops20h 20mAir Canada
Fri 11/711:00 amLIS - SDF
2 stops34h 49mAir Canada
Deal found 4/30$644
This Booking.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1510:55 amSDF - LIS
2 stops17h 25mMultiple Airlines
Fri 10/313:55 pmLIS - SDF
2 stops32h 19mMultiple Airlines
Deal found 4/30$670
This Gurufare deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:00 pmSDF - LIS
2 stops24h 50mLufthansa
Fri 11/710:15 amLIS - SDF
1 stop16h 59mLufthansa
Deal found 4/30$698
This American Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/123:08 pmSDF - LIS
1 stop12h 57mAmerican Airlines
Tue 8/2611:05 amLIS - SDF
1 stop15h 33mAmerican Airlines
Deal found 4/30$714
This Ovago deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/57:25 amSDF - LIS
2 stops33h 10mAer Lingus
Mon 5/1211:25 amLIS - SDF
2 stops38h 38mAer Lingus
Deal found 5/1$1,169
This British Airways deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/122:09 pmSDF - LIS
2 stops28h 16mBritish Airways
Mon 8/186:45 pmLIS - SDF
2 stops33h 16mBritish Airways
Deal found 4/30$1,462
This Finnair deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/132:09 pmSDF - LIS
2 stops28h 16mFinnair
Sat 8/166:35 amLIS - SDF
2 stops42h 26mFinnair
Deal found 4/30$1,622
This KLM deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/114:19 pmSDF - LIS
1 stop13h 26mKLM
Fri 8/1510:00 amLIS - SDF
2 stops17h 32mKLM
Deal found 4/30$3,164
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/124:19 pmSDF - LIS
1 stop13h 26mDelta
Sun 8/179:55 amLIS - SDF
2 stops17h 37mDelta
Deal found 4/30$3,404

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Louisville to Portugal that are best for you.

Fly from

Louisville

Fly to

Portugal

Route

Depart

Return

Price

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/15

10:55 am-9:20 am

2 stops17h 25m

Lisbon Humberto Delgado

Fri 10/31

3:55 pm-8:14 pm

2 stops32h 19m

$670

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/15

7:00 am-9:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Fri 10/31

11:55 am-10:39 am

1 stop26h 44m

$690

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 8/12

3:08 pm-9:05 am

1 stop12h 57m

Lisbon Humberto Delgado

Tue 8/26

11:05 am-9:38 pm

1 stop15h 33m

$714

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 8/12

11:25 am-9:20 am

3 stops16h 55m

Lisbon Humberto Delgado

Tue 8/26

11:25 am-10:02 am

3 stops27h 37m

$775

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/15

12:15 pm-8:20 am

1 stop15h 05m

Lisbon Humberto Delgado

Fri 10/31

10:15 am-10:14 pm

1 stop15h 59m

$1,004

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 6/12

6:42 pm-10:45 am

2 stops35h 03m

Lisbon Humberto Delgado

Sun 8/17

10:15 pm-6:24 pm

2 stops25h 09m

$1,461

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 6/12

2:09 pm-11:25 pm

2 stops28h 16m

Lisbon Humberto Delgado

Mon 8/18

6:45 pm-11:01 pm

2 stops33h 16m

$1,462

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Fri 6/13

2:09 pm-11:25 pm

2 stops28h 16m

Lisbon Humberto Delgado

Sat 8/16

6:35 am-8:01 pm

2 stops42h 26m

$1,622

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 6/11

4:19 pm-10:45 am

1 stop13h 26m

Lisbon Humberto Delgado

Fri 8/15

10:00 am-10:32 pm

2 stops17h 32m

$3,164

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 6/12

4:19 pm-10:45 am

1 stop13h 26m

Lisbon Humberto Delgado

Sun 8/17

9:55 am-10:32 pm

2 stops17h 37m

$3,404

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Best time to book a flight from Louisville to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Louisville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Louisville to Portugal

What is the cheapest month to book a flight from Louisville to Portugal?

Currently, January is the cheapest month in which you can book a flight from Louisville to Portugal (average of $612). Flying from Louisville to Portugal in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SDF to PT?

Find hourly flight availability from Louisville to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Louisville to Portugal as you normally would.

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated May 1, 2025.
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Louisville to Portugal?

    Most people fly from Louisville Intl (SDF) if they book a flight from Louisville to Portugal. Louisville Intl is conveniently located just 5.3 mi from Louisville’s city center.

  • Can I find deals for flights from Louisville to Portugal that include hotel bookings?

    Yes. In addition to deals on Louisville to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Portugal.

  • Can I find deals for business class flights from Louisville to Portugal?

    Yes. Cheapflights offers flight deals from Louisville to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Louisville to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Louisville to Portugal (average of $612). Flying from Louisville to Portugal in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Louisville to Portugal

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Top 4 airlines flying from Louisville to Portugal

Discover the top 4 airlines that operate flights from Louisville to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$600Average$1,110FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$618Average$1,250FlexibilityNo cancel feeOn-time69%
DeltaCheapest$677Average$1,156FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$859Average$1,776FlexibilityNo cancel feeOn-time76%

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