$348+ 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LIS
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Louisville to PortugalExplore 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 August 5, 2026.
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 August 5, 2026.
This Air Canada deal was found by Cheapflights users on 8/3. 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.
Wed 11/1810:37 am -
2 stops15h 18m
Fri 11/2711:20 am -
2 stops38h 32m
Deal found 8/3![Air Canada logo]()
$730
This Air Canada deal was found by Cheapflights users on 8/3. 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 11/175:57 pm -
2 stops31h 58m
Fri 11/2711:20 am -
2 stops38h 32m
Deal found 8/3![Air Canada logo]()
$735
This Delta deal was found by Cheapflights users on 8/3. 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.
Tue 11/172:50 pm -
1 stop12h 10m
Thu 12/35:30 am -
2 stops20h 29m
Deal found 8/3![Delta logo]()
$743
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Tue 11/1711:15 am -
1 stop15h 55m
Fri 11/2710:15 am -
1 stop18h 15m
Deal found 8/3![United Airlines logo]()
$746
This Air Canada deal was found by Cheapflights users on 8/3. 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.
Mon 11/232:10 pm -
2 stops15h 30m
Fri 11/2711:20 am -
2 stops38h 32m
Deal found 8/3![Air Canada logo]()
$749
This United Airlines deal was found by Cheapflights users on 8/1. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:30 am -
1 stop20h 40m
Wed 12/911:20 am -
2 stops37h 40m
Deal found 8/1![United Airlines logo]()
$750
This Delta deal was found by Cheapflights users on 8/3. 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.
Tue 11/171:30 pm -
1 stop14h 30m
Fri 11/2711:15 am -
2 stops17h 50m
Deal found 8/3![Delta logo]()
$751
This Air Canada deal was found by Cheapflights users on 8/3. 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.
Sun 11/225:57 pm -
2 stops35h 43m
Fri 11/2711:20 am -
2 stops38h 32m
Deal found 8/3![Air Canada logo]()
$754
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sun 11/226:30 pm -
1 stop32h 40m
Thu 12/310:15 am -
1 stop31h 47m
Deal found 8/3![United Airlines logo]()
$757
This Air Canada deal was found by Cheapflights users on 7/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/612:20 pm -
2 stops16h 00m
Wed 12/911:20 am -
2 stops37h 54m
Deal found 7/31![Air Canada logo]()
$758
Best flights from Louisville to PortugalDiscover carefully curated flight deals from Louisville to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals from Louisville to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This United Airlines deal was found by Cheapflights users on 7/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/61:00 pm -
1 stop14h 10m
Wed 12/95:00 am -
2 stops22h 09m
Deal found 7/31![United Airlines logo]()
$752
This KLM deal was found by Cheapflights users on 8/2. 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.
Tue 11/171:30 pm -
1 stop14h 30m
Sat 11/289:40 am -
2 stops16h 33m
Deal found 8/2![KLM logo]()
$825
This Delta deal was found by Cheapflights users on 8/3. 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.
Wed 9/305:50 pm -
2 stops16h 05m
Mon 10/512:45 pm -
2 stops25h 12m
Deal found 8/3![Delta logo]()
$905
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Tue 11/171:45 pm -
1 stop13h 25m
Wed 12/25:00 am -
2 stops20h 00m
Deal found 8/3![United Airlines logo]()
$765
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/3010:25 am -
2 stops17h 55m
Thu 10/85:05 am -
2 stops17h 35m
Deal found 8/3![United Airlines logo]()
$798
This Delta deal was found by Cheapflights users on 8/1. 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.
Mon 9/75:25 pm -
2 stops16h 30m
Tue 9/155:00 am -
2 stops21h 16m
Deal found 8/1![Delta logo]()
$950
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Thu 11/196:10 am -
1 stop21h 00m
Thu 12/310:15 am -
1 stop31h 47m
Deal found 8/3![United Airlines logo]()
$802
This United Airlines deal was found by Cheapflights users on 8/1. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/151:56 pm -
2 stops14h 24m
Tue 9/225:05 am -
2 stops23h 51m
Deal found 8/1![United Airlines logo]()
$949
Last-minute flights from Louisville to PortugalDiscover last-minute flight deals from Louisville to Portugal. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Portugal. Data last updated August 5, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/2. 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.
Tue 9/151:07 pm -
1 stop14h 13m
Tue 9/225:05 am -
2 stops19h 02m
Deal found 8/2![United Airlines logo]()
$946
This Delta deal was found by Cheapflights users on 8/5. 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 9/253:43 pm -
2 stops18h 12m
Fri 10/25:00 am -
2 stops19h 14m
Deal found 8/5![Delta logo]()
$859
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/3010:25 am -
2 stops17h 55m
Thu 10/85:05 am -
2 stops17h 35m
Deal found 8/3![United Airlines logo]()
$798
This Air Canada deal was found by Cheapflights users on 8/3. 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.
Wed 9/309:04 am -
2 stops19h 16m
Tue 10/611:25 am -
2 stops38h 06m
Deal found 8/3![Air Canada logo]()
$820
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/306:15 am -
1 stop21h 05m
Tue 10/65:05 am -
2 stops23h 54m
Deal found 8/3![United Airlines logo]()
$830
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/3010:25 am -
2 stops17h 55m
Wed 10/75:05 am -
2 stops19h 06m
Deal found 8/3![United Airlines logo]()
$893
This Delta deal was found by Cheapflights users on 8/3. 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.
Wed 9/305:50 pm -
2 stops16h 05m
Mon 10/512:45 pm -
2 stops25h 12m
Deal found 8/3![Delta logo]()
$905
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/3010:25 am -
2 stops17h 55m
Sun 10/45:05 am -
2 stops23h 54m
Deal found 8/3![United Airlines logo]()
$930
One-way flights from Louisville to PortugalSearch for one-way flight options from Louisville to Portugal. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from Louisville to Portugal. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Tue 11/171:45 pm -
1 stop13h 25m
Deal found 8/4![United Airlines logo]()
$348
Find flight deals from Louisville to Portugal
Keep the following information in mind while searching for Louisville to Portugal flight deals. Data was last updated August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $723 (Expedia) |
One-way from | $348 (United Airlines) |
Popular in | June |
Cheapest in | December |
Average price | $984 |
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 August 5, 2026.
Use the filters below to find and compare flights from Louisville to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleLisbon
SDF Louisville Intl - LIS Lisbon Humberto Delgado
SDFLIS
Louisville Intl
Sun 12/6
1:00 pm-8:10 am
1 stop14h 10m
Lisbon Humberto Delgado
Wed 12/9
5:00 am-10:09 pm
2 stops22h 09m
$752
LouisvilleLisbon
SDF Louisville Intl - LIS Lisbon Humberto Delgado
SDFLIS
Louisville Intl
Tue 11/17
1:45 pm-8:10 am
1 stop13h 25m
Lisbon Humberto Delgado
Wed 12/2
5:00 am-8:00 pm
2 stops20h 00m
$765
LouisvilleLisbon
SDF Louisville Intl - LIS Lisbon Humberto Delgado
SDFLIS
Louisville Intl
Wed 9/30
10:25 am-9:20 am
2 stops17h 55m
Lisbon Humberto Delgado
Thu 10/8
5:05 am-5:40 pm
2 stops17h 35m
$798
LouisvilleLisbon
SDF Louisville Intl - LIS Lisbon Humberto Delgado
SDFLIS
Louisville Intl
Thu 11/19
6:10 am-8:10 am
1 stop21h 00m
Lisbon Humberto Delgado
Thu 12/3
10:15 am-1:02 pm
1 stop31h 47m
$802
Quickest round-trip
LouisvilleLisbon
SDF Louisville Intl - LIS Lisbon Humberto Delgado
SDFLIS
Louisville Intl
Tue 11/17
1:30 pm-9:00 am
1 stop14h 30m
Lisbon Humberto Delgado
Sat 11/28
9:40 am-9:13 pm
2 stops16h 33m
$825
LouisvilleLisbon
SDF Louisville Intl - LIS Lisbon Humberto Delgado
SDFLIS
Louisville Intl
Wed 9/30
5:50 pm-2:55 pm
2 stops16h 05m
Lisbon Humberto Delgado
Mon 10/5
12:45 pm-8:57 am
2 stops25h 12m
$905
LouisvilleLisbon
SDF Louisville Intl - LIS Lisbon Humberto Delgado
SDFLIS
Louisville Intl
Tue 9/15
1:56 pm-9:20 am
2 stops14h 24m
Lisbon Humberto Delgado
Tue 9/22
5:05 am-11:56 pm
2 stops23h 51m
$949
LouisvilleLisbon
SDF Louisville Intl - LIS Lisbon Humberto Delgado
SDFLIS
Louisville Intl
Mon 9/7
5:25 pm-2:55 pm
2 stops16h 30m
Lisbon Humberto Delgado
Tue 9/15
5:00 am-9:16 pm
2 stops21h 16m
$950
Cheapest one-way
Quickest one-way
LouisvilleLisbon
SDF Louisville Intl - LIS Lisbon Humberto Delgado
SDFLIS
Louisville Intl
Tue 11/17
1:45 pm-8:10 am
1 stop13h 25m
$348
Sorted by cheapest first
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.
SDF-LIS
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
SDF-PT0
SDF-LIS
What is the cheapest month to book a flight from Louisville to Portugal?
Currently, December is the cheapest month in which you can book a flight from Louisville to Portugal (average of $596). Flying from Louisville to Portugal in June is currently the most expensive (average of $1,334). 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.
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 August 5, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Louisville to Portugal to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
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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.
Complete your trip
Complete your trip to Portugal by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Louisville to Portugal by cabin class
Find flights from Louisville to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Louisville and Portugal flights
Browse other Louisville and Portugal flight options. Last updated on August 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Louisville to Portugal flights
Consider these flights traveling from Louisville to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top 3 airlines flying from Louisville to Portugal
Discover the top 3 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 August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$543 | Average$958 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$587 | Average$1,187 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$606 | Average$984 | FlexibilityNo cancel fee | On-time71% |