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Portugal

$416+ Cheap flights from Louisville (SDF) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LIS
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
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 April 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$788
(Justfly.com)

One-way from

$416
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$937
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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One-way flight from Louisville Intl to Portugal
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Highest demand for flights based on searches. 20% potential increase in price ($268 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 1, 2025.

This United deal was found by Cheapflights users on 4/1. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:30 amSDF - LIS
2 stops21h 50mUnited Airlines
Fri 11/710:15 amLIS - SDF
1 stop14h 10mUnited Airlines
Deal found 4/1$648
This Gurufare deal was found by Cheapflights users on 3/31. 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.
Wed 11/127:17 pmSDF - LIS
2 stops17h 28mBritish Airways
Sun 11/238:45 pmLIS - SDF
2 stops27h 13mBritish Airways
Deal found 3/31$676
This FlightHub deal was found by Cheapflights users on 4/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:30 amSDF - LIS
2 stops21h 50mMultiple Airlines
Fri 11/75:00 amLIS - SDF
2 stops22h 09mMultiple Airlines
Deal found 4/1$678
This Justfly.com deal was found by Cheapflights users on 3/31. 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.
Tue 8/1211:10 amSDF - LIS
2 stops17h 10mAir Canada
Tue 8/2611:25 amLIS - SDF
2 stops29h 19mAir Canada
Deal found 3/31$788
This American Airlines deal was found by Cheapflights users on 3/31. 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 8/127:56 amSDF - LIS
1 stop20h 09mAmerican Airlines
Tue 8/266:35 amLIS - SDF
2 stops17h 48mAmerican Airlines
Deal found 3/31$810
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/74:30 pmSDF - LIS
1 stop11h 30mDelta
Sun 11/165:00 amLIS - SDF
2 stops21h 41mDelta
Deal found 4/1$846
This Travelocity deal was found by Cheapflights users on 3/31. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/811:51 amSDF - LIS
2 stops30h 34mIberia
Mon 5/128:45 pmLIS - SDF
2 stops29h 18mIberia
Deal found 3/31$900
This Gurufare deal was found by Cheapflights users on 3/31. 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.
Sat 5/106:07 pmSDF - LIS
2 stops22h 43mLufthansa
Sat 5/1710:25 amLIS - SDF
1 stop16h 20mLufthansa
Deal found 3/31$1,029
This FlightHub deal was found by Cheapflights users on 4/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/73:55 pmSDF - LIS
2 stops24h 40mAer Lingus
Sun 6/2910:15 pmLIS - SDF
2 stops24h 56mAer Lingus
Deal found 4/1$1,557
This KLM deal was found by Cheapflights users on 4/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/94:19 pmSDF - LIS
1 stop13h 26mKLM
Mon 6/3012:45 pmLIS - SDF
2 stops16h 17mKLM
Deal found 4/1$1,698

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 April 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

Tue 8/12

11:10 am-9:20 am

2 stops17h 10m

Lisbon Humberto Delgado

Tue 8/26

11:25 am-11:44 am

2 stops29h 19m

$788

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 8/12

7:56 am-9:05 am

1 stop20h 09m

Lisbon Humberto Delgado

Tue 8/26

6:35 am-7:23 pm

2 stops17h 48m

$810

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 8/12

11:10 am-9:20 am

2 stops17h 10m

Lisbon Humberto Delgado

Tue 8/26

11:25 am-10:02 am

3 stops27h 37m

$818

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Thu 5/8

11:51 am-11:25 pm

2 stops30h 34m

Lisbon Humberto Delgado

Mon 5/12

8:45 pm-9:03 pm

2 stops29h 18m

$900

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 5/5

5:17 pm-3:40 pm

2 stops17h 23m

Lisbon Humberto Delgado

Mon 5/12

6:35 am-9:03 pm

2 stops19h 28m

$922

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Sat 5/10

6:07 pm-9:50 pm

2 stops22h 43m

Lisbon Humberto Delgado

Sat 5/17

10:25 am-9:45 pm

1 stop16h 20m

$1,029

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 5/5

2:25 pm-9:20 am

2 stops37h 55m

Lisbon Humberto Delgado

Mon 5/12

12:15 pm-5:26 pm

2 stops34h 11m

$1,057

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Sat 6/7

3:55 pm-9:35 pm

2 stops24h 40m

Lisbon Humberto Delgado

Sun 6/29

10:15 pm-6:11 pm

2 stops24h 56m

$1,557

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Sun 6/8

4:19 pm-10:45 am

1 stop13h 26m

Lisbon Humberto Delgado

Tue 7/1

12:45 pm-11:48 am

1 stop28h 03m

$1,595

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 6/9

12:56 pm-8:00 am

2 stops14h 04m

Lisbon Humberto Delgado

Sun 6/29

9:55 am-12:02 am

2 stops19h 07m

$1,698

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 13 results
1
2

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 $1,213). 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 April 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 April 1, 2025.
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
8,615 reviews
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
7,899 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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.
Air Canada
7.0
Good
9,013 reviews
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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 $1,213). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$574Average$1,111FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$618Average$1,192FlexibilityNo cancel feeOn-time69%
DeltaCheapest$677Average$1,148FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$859Average$1,776FlexibilityNo cancel feeOn-time76%
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