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$477+ Cheap flights from Greenville (GSP) to Portugal

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — LIS
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
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 December 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/13. 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.
Sat 12/209:40 amGSP - LIS
1 stop19h 35mUnited Airlines
Sat 12/2711:55 amLIS - GSP
1 stop12h 21mUnited Airlines
Deal found 12/13$1,121
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Sat 12/209:40 amGSP - LIS
1 stop19h 35mUnited Airlines
Wed 12/3111:55 amLIS - GSP
1 stop31h 20mUnited Airlines
Deal found 12/15$1,527
This Ovago deal was found by Cheapflights users on 12/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2011:55 amGSP - LIS
2 stops20h 25mLufthansa
Wed 12/3110:15 amLIS - GSP
1 stop18h 41mLufthansa
Deal found 12/13$1,693
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Sat 12/209:40 amGSP - OPO
2 stops24h 20mUnited Airlines
Wed 12/316:00 amOPO - GSP
2 stops18h 16mUnited Airlines
Deal found 12/15$2,326

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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$477
(FlightHub)

Popular in

June

Cheapest in

February

Average price

$1,221
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
Highest demand for flights based on searches. 26% potential increase in price ($348 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 15, 2025.
Use the filters below to find and compare flights from Greenville to Portugal that are best for you.

Fly from

Greenville

Fly to

Portugal

Route

Depart

Return

Price

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 2/25

12:05 pm-9:30 am

1 stop16h 25m

Porto

Wed 3/11

6:00 am-9:06 pm

2 stops19h 06m

$477

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Mon 1/12

11:49 am-8:10 am

1 stop15h 21m

Lisbon Humberto Delgado

Thu 1/22

11:20 am-11:48 pm

2 stops41h 28m

$483

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Wed 1/28

10:00 am-9:20 am

2 stops42h 20m

Lisbon Humberto Delgado

Wed 2/4

8:20 am-11:48 pm

2 stops20h 28m

$488

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 2/25

6:30 am-9:30 am

2 stops22h 00m

Porto

Wed 3/11

6:00 am-9:58 pm

2 stops43h 58m

$491

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 1/12

2:55 pm-11:40 am

2 stops15h 45m

Porto

Thu 1/22

6:00 am-7:29 pm

2 stops18h 29m

$491

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Mon 1/12

6:20 am-9:20 am

2 stops22h 00m

Lisbon Humberto Delgado

Thu 1/22

11:20 am-11:48 pm

2 stops41h 28m

$493

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Wed 1/28

11:50 am-8:10 am

1 stop15h 20m

Lisbon Humberto Delgado

Wed 2/4

8:20 am-11:48 pm

2 stops20h 28m

$494

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Mon 1/12

11:00 am-9:05 am

1 stop17h 05m

Lisbon Humberto Delgado

Thu 1/22

10:55 am-8:59 pm

1 stop15h 04m

$504

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Fri 1/16

11:00 am-12:05 pm

2 stops20h 05m

Lisbon Humberto Delgado

Tue 1/20

11:05 am-8:59 pm

1 stop14h 54m

$505

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Fri 1/30

6:35 am-11:40 am

2 stops24h 05m

Porto

Tue 2/3

6:00 am-8:47 pm

2 stops19h 47m

$505

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 17 results
1
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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 $318). Flying from Greenville to Portugal in June is currently the most expensive (average of $733). 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.

What is the cheapest time of day to fly from GSP to PT?

Find hourly flight availability from Greenville to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Greenville to Portugal in the evening. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the afternoon.

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 December 15, 2025.
Read through reviews of airlines operating flights from Greenville to Portugal, such as United Airlines, American Airlines, and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,048 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
British Airways
6.7
Okay
7,575 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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 Lufthansa, United Airlines, and Air Canada fly from Greenville to Portugal in about 16h 25m. The time it takes to get you to your destination can typically vary by up to 5h 35m. 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 $318). Flying from Greenville to Portugal in June is currently the most expensive (average of $733). 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

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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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$535Average$1,064FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$587Average$1,110FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$672Average$954FlexibilityNo cancel feeOn-time69%

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