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Portugal

$344+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — LIS
Jun 23 — Jun 301
Tue 6/23
Tue 6/30
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 May 24, 2026.

This United Airlines deal was found by Cheapflights users on 5/19. 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 11/158:45 am
GSP
-
OPO
1 stop19h 45m
United Airlines
Thu 11/196:00 am
OPO
-
GSP
2 stops22h 19m
United Airlines
Deal found 5/19$746
This United Airlines deal was found by Cheapflights users on 5/19. 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 11/158:45 am
GSP
-
LIS
1 stop18h 25m
United Airlines
Thu 11/195:00 am
LIS
-
GSP
2 stops21h 11m
United Airlines
Deal found 5/19$750
This United Airlines deal was found by Cheapflights users on 5/21. 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 11/36:00 am
GSP
-
LIS
2 stops22h 50m
United Airlines
Tue 11/105:00 am
LIS
-
GSP
2 stops21h 11m
United Airlines
Deal found 5/21$753
This FlightHub deal was found by Cheapflights users on 5/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:54 pm
GSP
-
LIS
1 stop14h 21m
Lufthansa
Mon 11/163:50 pm
LIS
-
GSP
2 stops36h 29m
Lufthansa
Deal found 5/22$764
This United Airlines deal was found by Cheapflights users on 5/22. 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 11/98:40 am
GSP
-
LIS
2 stops20h 35m
United Airlines
Mon 11/1612:25 pm
LIS
-
GSP
2 stops39h 54m
United Airlines
Deal found 5/22$775
This Expedia deal was found by Cheapflights users on 5/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:55 am
GSP
-
LIS
1 stop17h 10m
British Airways
Mon 11/1611:05 am
LIS
-
GSP
1 stop14h 49m
British Airways
Deal found 5/22$812
This Lufthansa deal was found by Cheapflights users on 5/19. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/222:54 pm
GSP
-
OPO
2 stops19h 26m
Lufthansa
Fri 11/2712:35 pm
OPO
-
GSP
1 stop15h 44m
Lufthansa
Deal found 5/19$828
This United Airlines deal was found by Cheapflights users on 5/21. 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 10/206:30 am
GSP
-
LIS
1 stop20h 50m
United Airlines
Mon 10/2612:25 pm
LIS
-
GSP
2 stops36h 46m
United Airlines
Deal found 5/21$847
This Air France deal was found by Cheapflights users on 5/19. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:42 pm
GSP
-
OPO
2 stops12h 23m
Multiple Airlines
Fri 11/275:40 am
OPO
-
GSP
2 stops18h 09m
Multiple Airlines
Deal found 5/19$861
This United Airlines deal was found by Cheapflights users on 5/21. 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 10/156:55 pm
GSP
-
LIS
1 stop32h 25m
United Airlines
Thu 10/2211:25 am
LIS
-
GSP
2 stops51h 26m
United Airlines
Deal found 5/21$880
This Delta deal was found by Cheapflights users on 5/21. 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.
Thu 10/156:20 pm
GSP
-
LIS
2 stops19h 25m
Delta
Thu 10/225:00 am
LIS
-
GSP
2 stops18h 49m
Delta
Deal found 5/21$886
This Expedia deal was found by Cheapflights users on 5/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:51 am
GSP
-
LIS
1 stop20h 14m
British Airways
Thu 10/2211:05 am
LIS
-
GSP
1 stop11h 23m
British Airways
Deal found 5/21$888

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 May 24, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$746
(United Airlines)

One-way from

$344
(Expedia)

Popular in

May

Cheapest in

February

Average price

$1,275
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. 15% potential increase in price ($164 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 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

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 11/15

8:45 am-9:30 am

1 stop19h 45m

Porto

Thu 11/19

6:00 am-9:11 pm

2 stops20h 11m

$746

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Sun 11/15

10:21 am-10:15 am

1 stop18h 54m

Lisbon Humberto Delgado

Thu 11/19

5:00 am-9:11 pm

2 stops21h 11m

$750
Quickest round-trip

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Tue 11/3

8:45 am-8:10 am

1 stop18h 25m

Lisbon Humberto Delgado

Tue 11/10

11:55 am-6:50 pm

1 stop11h 55m

$762

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Thu 10/15

6:55 pm-8:20 am

1 stop32h 25m

Lisbon Humberto Delgado

Thu 10/22

11:25 am-9:51 am

2 stops51h 26m

$880

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Tue 9/29

10:23 am-10:30 am

1 stop19h 07m

Lisbon Humberto Delgado

Thu 10/15

12:20 pm-7:04 pm

1 stop11h 44m

$906

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 8/10

1:28 pm-10:30 am

2 stops16h 02m

Porto

Tue 8/18

11:30 am-10:59 pm

2 stops16h 29m

$929

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

6:30 am-7:00 am

2 stops19h 30m

Porto

Tue 7/21

12:15 pm-11:34 pm

2 stops40h 19m

$930

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

6:30 am-7:00 am

2 stops19h 30m

Porto

Tue 7/21

12:15 pm-10:37 am

2 stops27h 22m

$930

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Thu 8/13

8:29 pm-7:10 am

2 stops29h 41m

Porto

Wed 8/19

2:25 pm-11:05 pm

2 stops37h 40m

$941

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Thu 8/13

11:25 am-9:45 am

1 stop17h 20m

Porto

Wed 8/19

2:25 pm-10:53 pm

2 stops37h 28m

$948

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/19

Showing 1-10 of 27 resultsSorted by cheapest first
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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, January is the cheapest month in which you can book a flight from Greenville to Portugal (average of $509). Flying from Greenville to Portugal in July is currently the most expensive (average of $1,258). 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 May 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
9,750 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,750 reviews
United Airlines
7.4
Good
9,750 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
American Airlines
7.1
Good
11,633 reviews
United Airlines
7.4
Good
9,750 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
British Airways
6.7
Okay
7,997 reviews
United Airlines
7.4
Good
9,750 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 KLM fly from Greenville to Portugal in about 16h 02m. The time it takes to get you to your destination can typically vary by up to 3h 43m. The distance between Greenville and Portugal is about 3901 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, January is the cheapest month in which you can book a flight from Greenville to Portugal (average of $509). Flying from Greenville to Portugal in July is currently the most expensive (average of $1,258). 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 May 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$509Average$773FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$535Average$919FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$559Average$959FlexibilityNo cancel feeOn-time69%

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