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Portugal

$320+ Cheap flights from Greenville (GSP) 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — LIS
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
1 adult, Economy
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Cheap flight deals from Greenville to Portugal

Cheapest flights from Greenville to Portugal
Explore the most affordable flight options available from Greenville to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.

This United Airlines deal was found by Cheapflights users on 7/24. 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 11/246:30 am
GSP
-
LIS
2 stops20h 40m
United Airlines
Fri 12/411:20 am
LIS
-
GSP
2 stops36h 30m
United Airlines
Deal found 7/24$715
This oojo deal was found by Cheapflights users on 7/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:55 am
GSP
-
LIS
1 stop20h 10m
British Airways
Fri 12/411:05 am
LIS
-
GSP
1 stop14h 43m
British Airways
Deal found 7/24$730
This United Airlines deal was found by Cheapflights users on 7/20. 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 12/610:21 am
GSP
-
LIS
1 stop18h 44m
United Airlines
Wed 12/911:20 am
LIS
-
GSP
2 stops34h 40m
United Airlines
Deal found 7/20$746
This United Airlines deal was found by Cheapflights users on 7/23. 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 12/65:45 pm
GSP
-
OPO
1 stop10h 45m
United Airlines
Wed 12/96:00 am
OPO
-
GSP
2 stops17h 50m
United Airlines
Deal found 7/23$750
This Justfly.com deal was found by Cheapflights users on 7/20. 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.
Sat 10/247:35 pm
GSP
-
OPO
2 stops36h 10m
Lufthansa
Tue 11/176:00 am
OPO
-
GSP
2 stops22h 37m
Lufthansa
Deal found 7/20$757
This oojo deal was found by Cheapflights users on 7/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/610:59 am
GSP
-
LIS
1 stop17h 06m
British Airways
Wed 12/911:05 am
LIS
-
GSP
1 stop11h 51m
British Airways
Deal found 7/22$765
This British Airways deal was found by Cheapflights users on 7/22. 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.
Fri 11/137:55 am
GSP
-
LIS
2 stops23h 10m
British Airways
Mon 11/1610:35 am
LIS
-
GSP
2 stops38h 20m
British Airways
Deal found 7/22$798
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Sat 10/242:51 pm
GSP
-
OPO
2 stops16h 54m
United Airlines
Tue 11/1712:35 pm
OPO
-
GSP
1 stop16h 02m
United Airlines
Deal found 7/20$823
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/1811:25 am
GSP
-
OPO
1 stop13h 50m
United Airlines
Mon 8/246:00 am
OPO
-
GSP
2 stops44h 07m
United Airlines
Deal found 7/20$920
This United deal was found by Cheapflights users on 7/22. 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.
Mon 8/3111:25 am
GSP
-
OPO
1 stop17h 20m
Multiple Airlines
Wed 9/96:00 am
OPO
-
GSP
2 stops18h 45m
Multiple Airlines
Deal found 7/22$933
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 8/3111:25 am
GSP
-
OPO
1 stop14h 30m
United Airlines
Wed 9/98:55 am
OPO
-
GSP
1 stop15h 50m
United Airlines
Deal found 7/22$941
This United Airlines deal was found by Cheapflights users on 7/22. 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 9/94:00 pm
GSP
-
OPO
1 stop9h 55m
United Airlines
Thu 9/176:00 am
OPO
-
GSP
2 stops22h 15m
United Airlines
Deal found 7/22$943

Find flight deals from Greenville to Portugal

Keep the following information in mind while searching for Greenville to Portugal flight deals. Data was last updated July 24, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$714
(United Airlines)

One-way from

$320
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,386
Provider with most accurate pricing for Greenville-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Greenville-Lisbon Humberto Delgado flights.
Search Deals
From Greenville to Portugal
Search Deals
One-way flight from Greenville to Portugal
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($291 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Greenville 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 July 24, 2026.
Use the filters below to find and compare flights from Greenville to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Tue 11/24

6:30 am-8:10 am

2 stops20h 40m

Lisbon Humberto Delgado

Fri 12/4

11:20 am-6:50 pm

2 stops36h 30m

$715

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Sun 12/6

10:21 am-10:05 am

1 stop18h 44m

Lisbon Humberto Delgado

Wed 12/9

11:20 am-5:00 pm

2 stops34h 40m

$746

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 12/6

5:45 pm-9:30 am

1 stop10h 45m

Porto

Wed 12/9

6:00 am-6:50 pm

2 stops17h 50m

$750
Quickest round-trip

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Tue 1/5

6:26 pm-9:05 am

1 stop9h 39m

Lisbon Humberto Delgado

Fri 2/5

6:30 am-7:07 pm

2 stops17h 37m

$754

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Thu 11/12

11:58 am-8:10 am

1 stop15h 12m

Lisbon Humberto Delgado

Mon 11/30

12:25 pm-11:19 pm

2 stops39h 54m

$819

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sat 10/24

2:51 pm-12:45 pm

2 stops16h 54m

Porto

Tue 11/17

12:35 pm-11:37 pm

1 stop16h 02m

$823

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Sat 10/3

7:35 pm-9:20 am

2 stops32h 45m

Lisbon Humberto Delgado

Sun 10/18

5:05 am-9:17 pm

2 stops45h 12m

$848

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 8/18

11:25 am-6:15 am

1 stop13h 50m

Porto

Mon 8/24

6:00 am-9:07 pm

2 stops44h 07m

$920

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 8/31

10:33 am-6:55 am

2 stops15h 22m

Porto

Wed 9/9

6:00 am-7:45 pm

2 stops18h 45m

$933

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 8/31

11:25 am-6:55 am

1 stop14h 30m

Porto

Wed 9/9

8:55 am-7:45 pm

1 stop15h 50m

$941

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Showing 1-10 of 23 resultsSorted by cheapest first
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2
3

Best time to book a flight from Greenville to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Greenville 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 Greenville to Portugal

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

Currently, February is the cheapest month in which you can book a flight from Greenville to Portugal (average of $587). Flying from Greenville to Portugal in December is currently the most expensive (average of $1,986). 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 July 24, 2026.
Read through reviews of airlines operating flights from Greenville to Portugal, such as United Airlines,American Airlines, andBritish Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,034 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
10,034 reviews
United Airlines
7.4
Good
10,034 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
American Airlines
7.1
Good
11,850 reviews
United Airlines
7.4
Good
10,034 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
British Airways
6.7
Okay
8,132 reviews
United Airlines
7.4
Good
10,034 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

Related info for your journey

Find useful and relevant information for your journey from Greenville 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 Greenville to Portugal?

    Greenville (GSP), located 10.4 mi from the city center, is the airport you fly out of when you book flights from Greenville to Portugal.

  • How long is the flight from Greenville to Portugal?

    Airlines like United Airlines and Lufthansa fly from Greenville to Portugal in about 18h 44m. The time it takes to get you to your destination can typically vary by up to 17h 26m. The distance between Greenville and Portugal is about 3937 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Greenville 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 Greenville to Portugal?

    Currently, February is the cheapest month in which you can book a flight from Greenville to Portugal (average of $587). Flying from Greenville to Portugal in December is currently the most expensive (average of $1,986). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Greenville to Portugal

Discover the top 3 airlines that operate flights from Greenville 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 July 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$509Average$1,204FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$510Average$1,167FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$624Average$1,091FlexibilityNo cancel feeOn-time70%

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