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Portugal

$436+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LIS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$607
(Booking.com)

One-way from

$436
(United Airlines)

Popular in

May

Cheapest in

January

Average price

$1,093
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. 15% potential increase in price ($181 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 June 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 June 12, 2025.

This Booking.com deal was found by Cheapflights users on 6/12. 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.
Mon 11/1011:10 amSDF - LIS
2 stops41h 10mMultiple Airlines
Mon 11/173:55 pmLIS - SDF
2 stops33h 19mMultiple Airlines
Deal found 6/12$607
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/129:55 amSDF - LIS
1 stop19h 20mUnited Airlines
Sun 11/235:00 amLIS - SDF
2 stops20h 14mUnited Airlines
Deal found 6/10$647
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 11/106:25 pmSDF - LIS
1 stop9h 40mAmerican Airlines
Mon 11/1711:05 amLIS - SDF
1 stop14h 50mAmerican Airlines
Deal found 6/12$729
This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/127:00 amSDF - LIS
2 stops21h 20mAir Canada
Tue 8/2611:25 amLIS - SDF
2 stops37h 48mAir Canada
Deal found 6/11$733
This KAYAK deal was found by Cheapflights users on 6/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/77:17 pmSDF - LIS
2 stops14h 38mBritish Airways
Sun 11/166:40 pmLIS - SDF
2 stops29h 44mBritish Airways
Deal found 6/12$736
This Delta deal was found by Cheapflights users on 6/10. 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 9/1212:40 pmSDF - LIS
2 stops14h 20mDelta
Tue 9/1612:45 pmLIS - SDF
2 stops16h 11mDelta
Deal found 6/10$946
This Trip.com deal was found by Cheapflights users on 6/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/119:55 amSDF - LIS
1 stop19h 35mLufthansa
Tue 9/1612:20 pmLIS - SDF
1 stop13h 42mLufthansa
Deal found 6/10$1,100
This KLM deal was found by Cheapflights users on 6/10. 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 9/104:20 pmSDF - LIS
1 stop13h 25mKLM
Tue 9/1610:00 amLIS - SDF
2 stops17h 30mKLM
Deal found 6/10$1,153
This Iberia deal was found by Cheapflights users on 6/10. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/136:12 pmSDF - LIS
2 stops20h 53mIberia
Fri 9/1912:30 pmLIS - SDF
2 stops15h 29mIberia
Deal found 6/10$1,885

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 June 12, 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

Mon 9/8

4:22 pm-5:30 am

1 stop32h 08m

Lisbon Humberto Delgado

Mon 9/15

6:45 am-5:14 pm

2 stops39h 29m

$713

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 8/12

7:00 am-9:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Tue 8/26

11:25 am-8:13 pm

2 stops37h 48m

$733

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 9/9

2:20 pm-10:30 am

1 stop15h 10m

Lisbon Humberto Delgado

Tue 9/16

5:05 am-8:13 pm

2 stops20h 08m

$751

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 9/10

5:18 pm-11:10 pm

2 stops24h 52m

Lisbon Humberto Delgado

Tue 9/16

8:45 pm-9:36 pm

2 stops29h 51m

$789

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 8/12

10:50 am-9:05 am

1 stop17h 15m

Lisbon Humberto Delgado

Tue 8/26

11:05 am-9:38 pm

1 stop15h 33m

$872

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 9/10

4:20 pm-10:45 am

1 stop13h 25m

Lisbon Humberto Delgado

Tue 9/16

10:00 am-10:30 pm

2 stops17h 30m

$1,153

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Sun 9/7

1:30 pm-8:20 am

1 stop13h 50m

Lisbon Humberto Delgado

Sun 9/14

10:25 am-8:13 pm

1 stop14h 48m

$1,358

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 9/9

9:55 am-10:30 am

1 stop19h 35m

$436

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 9/10

7:00 am-11:05 am

2 stops23h 05m

$443

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 9/9

7:09 pm-11:00 pm

2 stops22h 51m

$450

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 12 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 $1,136). 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 June 12, 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 June 12, 2025.
Get a feel of what it's like to fly with Delta, KLM and United Airlines from Louisville to Portugal by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines to fly from Louisville to Portugal one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $436. Air Canada flights start at $443 while deals on British Airways start at $450 one-way.

  • 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 $1,136). 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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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$600Average$1,099FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$618Average$1,159FlexibilityNo cancel feeOn-time69%
DeltaCheapest$677Average$1,156FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$859Average$1,449FlexibilityNo cancel feeOn-time76%

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