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Portugal

$463+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — LIS
Jun 14 — Jun 211
Sun 6/14
Sun 6/21
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 15, 2026.

This United Airlines deal was found by Cheapflights users on 5/15. 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 11/38:45 am
GSP
-
LIS
1 stop18h 25m
United Airlines
Tue 11/105:00 am
LIS
-
GSP
2 stops21h 11m
United Airlines
Deal found 5/15$750
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:21 am
GSP
-
LIS
1 stop18h 54m
United Airlines
Tue 11/1010:15 am
LIS
-
GSP
1 stop18h 04m
United Airlines
Deal found 5/12$763
This Air Canada deal was found by Cheapflights users on 5/14. 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 12/141:10 pm
GSP
-
LIS
2 stops16h 50m
Air Canada
Thu 12/241:00 pm
LIS
-
GSP
2 stops37h 11m
Air Canada
Deal found 5/14$832
This United Airlines deal was found by Cheapflights users on 5/14. 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 12/148:45 am
GSP
-
LIS
1 stop18h 25m
United Airlines
Thu 12/2411:55 am
LIS
-
GSP
1 stop11h 55m
United Airlines
Deal found 5/14$839
This Delta deal was found by Cheapflights users on 5/14. 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 12/142:25 pm
GSP
-
LIS
2 stops13h 35m
Delta
Tue 12/2211:15 am
LIS
-
GSP
2 stops27h 10m
Delta
Deal found 5/14$843
This United Airlines deal was found by Cheapflights users on 5/14. 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 12/148:45 am
GSP
-
LIS
1 stop18h 25m
United Airlines
Wed 12/2311:55 am
LIS
-
GSP
1 stop31h 15m
United Airlines
Deal found 5/14$844
This United Airlines deal was found by Cheapflights users on 5/14. 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 12/156:00 am
GSP
-
LIS
2 stops24h 00m
United Airlines
Wed 12/2310:15 am
LIS
-
GSP
1 stop27h 29m
United Airlines
Deal found 5/14$852
This Ovago deal was found by Cheapflights users on 5/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1610:59 am
GSP
-
LIS
1 stop17h 06m
British Airways
Thu 12/2411:05 am
LIS
-
GSP
1 stop11h 46m
British Airways
Deal found 5/14$877
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:30 am
GSP
-
OPO
2 stops19h 30m
United Airlines
Tue 7/2112:15 pm
OPO
-
GSP
2 stops40h 19m
United Airlines
Deal found 5/11$930
This Air Canada deal was found by Cheapflights users on 5/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:49 pm
GSP
-
OPO
2 stops54h 11m
Air Canada
Tue 7/2112:15 pm
OPO
-
GSP
2 stops40h 19m
Air Canada
Deal found 5/12$936
This United Airlines deal was found by Cheapflights users on 5/13. 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 7/66:30 am
GSP
-
OPO
2 stops19h 30m
United Airlines
Mon 7/2012:10 pm
OPO
-
GSP
2 stops40h 24m
United Airlines
Deal found 5/13$965
This Rumbo deal was found by Cheapflights users on 5/12. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:38 pm
GSP
-
OPO
2 stops23h 07m
Lufthansa
Tue 8/186:20 am
OPO
-
GSP
2 stops39h 44m
Lufthansa
Deal found 5/12$999

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 15, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$750
(United Airlines)

One-way from

$463
(Delta)

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 15, 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
Quickest round-trip

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Sun 11/8

10:21 am-10:15 am

1 stop18h 54m

Lisbon Humberto Delgado

Tue 11/10

10:15 am-5:19 pm

1 stop12h 04m

$763

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

7:49 pm-6:15 am

1 stop29h 26m

Porto

Tue 7/21

12:15 pm-10:37 am

2 stops27h 22m

$933

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

6:30 am-7:00 am

2 stops19h 30m

Porto

Mon 7/20

12:10 pm-11:34 pm

2 stops40h 24m

$965

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Wed 9/16

5:45 am-8:00 am

2 stops21h 15m

Lisbon Humberto Delgado

Sat 9/26

10:00 am-11:38 pm

2 stops18h 38m

$1,020

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Thu 9/17

10:14 am-8:00 am

2 stops16h 46m

Lisbon Humberto Delgado

Sat 9/26

10:00 am-11:38 pm

2 stops18h 38m

$1,039

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Tue 6/9

7:49 pm-8:20 am

1 stop31h 31m

Lisbon Humberto Delgado

Thu 6/18

11:25 am-11:34 pm

2 stops41h 09m

$1,111

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Thu 9/17

7:00 am-8:20 am

1 stop20h 20m

Lisbon Humberto Delgado

Sat 9/26

10:25 am-11:29 pm

1 stop18h 04m

$1,115
Cheapest one-way

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Thu 9/17

7:00 am-8:20 am

1 stop20h 20m

$482

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Thu 9/17

7:45 am-8:00 am

2 stops19h 15m

$482

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/14

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 May is currently the most expensive (average of $1,204). 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 15, 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
9,727 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

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
9,727 reviews
United Airlines
7.4
Good
9,727 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

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
11,662 reviews
United Airlines
7.4
Good
9,727 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

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
7,982 reviews
United Airlines
7.4
Good
9,727 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

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 Air Canada fly from Greenville to Portugal in about 18h 54m. The time it takes to get you to your destination can typically vary by up to 36m. 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, 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 May is currently the most expensive (average of $1,204). 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 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$509Average$1,002FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$535Average$939FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$559Average$959FlexibilityNo cancel feeOn-time69%

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