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Cheap flights from Kentucky to Portugal from $331

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kentucky to Portugal departing on 5/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Kentucky to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:00 am - 10:30 am
SDF
-
LIS
19h 30m
1 stop
United Airlines Logo
1:00 pm - 4:49 pm
LIS
-
SDF
32h 49m
2 stops
$712United Airlines
Tue, Oct 13 - Fri, Nov 13
United Airlines Logo
10:00 am - 10:30 am
SDF
-
LIS
19h 30m
1 stop
United Airlines Logo
5:00 am - 8:14 pm
LIS
-
SDF
20h 14m
2 stops
$715United Airlines
Tue, Oct 13 - Thu, Nov 12
KLM Logo
12:53 pm - 10:45 am
SDF
-
LIS
16h 52m
2 stops
KLM Logo
11:25 am - 12:02 am
LIS
-
SDF
17h 37m
2 stops
$721KLM
Wed, Oct 14 - Thu, Nov 12
Delta Logo
1:59 pm - 10:45 am
SDF
-
LIS
15h 46m
2 stops
Delta Logo
5:30 am - 5:40 pm
LIS
-
SDF
17h 10m
2 stops
$728Delta
Wed, Oct 14 - Sun, Nov 8
Delta Logo
1:59 pm - 10:45 am
SDF
-
LIS
15h 46m
2 stops
Delta Logo
11:15 am - 9:41 pm
LIS
-
SDF
15h 26m
2 stops
$732Delta
Wed, Oct 14 - Sat, Nov 14
Air Canada Logo
6:00 pm - 11:05 am
SDF
-
LIS
36h 05m
2 stops
Air Canada Logo
11:20 am - 10:09 pm
LIS
-
SDF
39h 49m
2 stops
$749Air Canada
Mon, Oct 12 - Wed, Nov 11
American Airlines Logo
9:00 am - 9:05 am
BNA
-
LIS
18h 05m
1 stop
American Airlines Logo
8:25 am - 6:07 pm
LIS
-
BNA
15h 42m
2 stops
$769American Airlines
Wed, Apr 29 - Tue, May 5
Air Canada Logo
10:25 am - 11:00 am
BNA
-
LIS
18h 35m
1 stop
Air Canada Logo
11:25 am - 5:39 pm
LIS
-
BNA
36h 14m
2 stops
$825Air Canada
Mon, Sep 21 - Wed, Sep 30
American Airlines Logo
2:59 pm - 11:45 am
CVG
-
OPO
15h 46m
2 stops
American Airlines Logo
12:25 pm - 12:59 am
OPO
-
CVG
17h 34m
2 stops
$857American Airlines
Tue, Aug 18 - Wed, Sep 2
KLM Logo
3:45 pm - 10:30 am
LEX
-
OPO
13h 45m
2 stops
KLM Logo
5:00 am - 5:10 pm
OPO
-
LEX
17h 10m
2 stops
$1,174KLM
Thu, Sep 10 - Mon, Sep 21

United Airlines flights from Kentucky to Portugal

Our best United Airlines deals on Kentucky to Portugal flight tickets
United Airlines
Oct 13
SDF10:00 amLouisville Intl
19h 30m
1 stop
LIS10:30 amLisbon Humberto Delgado
Nov 13
LIS1:00 pmLisbon Humberto Delgado
32h 49m
2 stops
SDF4:49 pmLouisville Intl
$712
United Airlines
Oct 13
SDF10:00 amLouisville Intl
19h 30m
1 stop
LIS10:30 amLisbon Humberto Delgado
Nov 14
LIS5:00 amLisbon Humberto Delgado
20h 14m
2 stops
SDF8:14 pmLouisville Intl
$715
United Airlines
Oct 13
SDF11:13 amLouisville Intl
17h 07m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 11
LIS5:00 amLisbon Humberto Delgado
20h 14m
2 stops
SDF8:14 pmLouisville Intl
$718

Air Canada flights from Kentucky to Portugal

Our best Air Canada deals on Kentucky to Portugal flight tickets
Air Canada
Oct 12
SDF6:00 pmLouisville Intl
36h 05m
2 stops
LIS11:05 amLisbon Humberto Delgado
Nov 11
LIS11:20 amLisbon Humberto Delgado
39h 49m
2 stops
SDF10:09 pmLouisville Intl
$749
Air Canada
Oct 12
SDF6:00 pmLouisville Intl
36h 05m
2 stops
LIS11:05 amLisbon Humberto Delgado
Nov 13
LIS1:00 pmLisbon Humberto Delgado
35h 09m
2 stops
SDF7:09 pmLouisville Intl
$754
Air Canada
Sep 21
BNA10:25 amNashville Intl
18h 35m
1 stop
LIS11:00 amLisbon Humberto Delgado
Sep 30
LIS11:25 amLisbon Humberto Delgado
36h 14m
2 stops
BNA5:39 pmNashville Intl
$825

momondo Fare Finder

 
Customize your flight search to find flights from Kentucky 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, momondo users made 832,500 searches. Data last updated April 18, 2026.
Use the filters below to find and compare flights from Kentucky to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 10/13

10:00 am-10:30 am

1 stop19h 30m

Lisbon Humberto Delgado

Fri 11/13

1:00 pm-4:49 pm

2 stops32h 49m

$712

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Tue 10/13

10:00 am-10:30 am

1 stop19h 30m

Lisbon Humberto Delgado

Thu 11/12

5:00 am-8:14 pm

2 stops20h 14m

$715

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/14

12:53 pm-10:45 am

2 stops16h 52m

Lisbon Humberto Delgado

Thu 11/12

11:25 am-12:02 am

2 stops17h 37m

$721

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/14

1:59 pm-10:45 am

2 stops15h 46m

Lisbon Humberto Delgado

Sun 11/8

5:30 am-5:40 pm

2 stops17h 10m

$728

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Wed 10/14

1:59 pm-10:45 am

2 stops15h 46m

Lisbon Humberto Delgado

Sat 11/14

11:15 am-9:41 pm

2 stops15h 26m

$732

LouisvilleLisbon

SDF - LIS

SDFLIS

Louisville Intl

Mon 10/12

6:00 pm-11:05 am

2 stops36h 05m

Lisbon Humberto Delgado

Wed 11/11

11:20 am-10:09 pm

2 stops39h 49m

$749

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

Wed 4/29

9:00 am-9:05 am

1 stop18h 05m

Lisbon Humberto Delgado

Tue 5/5

8:25 am-6:07 pm

2 stops15h 42m

$769

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

Mon 9/21

10:25 am-11:00 am

1 stop18h 35m

Lisbon Humberto Delgado

Wed 9/30

11:25 am-5:39 pm

2 stops36h 14m

$825

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Tue 8/18

2:59 pm-11:45 am

2 stops15h 46m

Porto

Wed 9/2

12:25 pm-12:59 am

2 stops17h 34m

$857
Quickest round-trip

LexingtonPorto

LEX - OPO

LEXOPO

Lexington Blue Grass

Thu 9/10

3:45 pm-10:30 am

2 stops13h 45m

Porto

Mon 9/21

5:00 am-5:10 pm

2 stops17h 10m

$1,174

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

How to get the cheapest flight ticket from Kentucky 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?

The cheapest month to fly to Portugal from Kentucky is in December. Flight prices, which tend to average around $650, 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 Kentucky during April instead. Flights to Portugal in April, while not as cheap as those in December, still average around $651.

Can stopping save me money on Kentucky to Portugal flights?

You could potentially save up to 22% on your flight if you consider stops on a Kentucky to Portugal flight.

Cheap Kentucky to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kentucky to Portugal

Fastest flight time

10h 30m

Direct flights

None
The fastest flight from Kentucky to Portugal takes 10h 30m
There are no direct flights from Kentucky to Portugal. There are no popular flight routes from Kentucky to Portugal.
Search flight deals

Frequently asked questions about flying from Kentucky to Portugal

  • When did momondo last update prices for flights from Kentucky to Portugal?

    Prices for flights from Kentucky to Portugal are updated daily.

  • How many operators does momondo search for flights from Kentucky to Portugal?

  • How old do you have to be to fly from Kentucky to Portugal?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kentucky to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The necessary travel and health documents for your Portugal trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Kentucky to Portugal

Compare and see reviews for airlines that fly from Kentucky to Portugal with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $543Free CancellationRating
7.4
9,605 reviews
Search United Airlines flights
American AirlinesPriceFrom $603Free CancellationRating
7.1
11,604 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Kentucky to Portugal?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Kentucky to Portugal. momondo saves you time and could save you money on your trip.

Can I find flights from Kentucky to Portugal with flexible booking policies on momondo?

Yes. All flights to Portugal from Kentucky on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Kentucky to Portugal?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Kentucky to Portugal.

I’m not ready to book a flight from Kentucky to Portugal right now. Can momondo alert me if prices change?

Price alerts on flights to Portugal from Kentucky are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to Portugal

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Popular flights according to clicks in the last 7 days on momondo
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