Portugal

$357+ Cheap flights from Greenville (GSP) to Portugal

GSP — LIS
Dec 15 — Dec 221
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Cheap flight deals from Greenville to Portugal

Cheapest flights from Greenville to Portugal

Sun 12/612:15 pm -
1 stop16h 15m
Tue 12/156:00 am -
2 stops19h 59m
Deal found 11/11$781
Fri 11/2711:58 am -
1 stop16h 32m
Fri 12/46:00 am -
3 stops46h 40m
Deal found 11/13$836
Wed 12/3011:06 am -
2 stops15h 34m
Wed 1/68:20 am -
2 stops19h 04m
Deal found 11/15$872
Sat 11/145:37 pm -
2 stops40h 43m
Sat 11/211:45 pm -
2 stops58h 16m
Deal found 11/12$880
Fri 11/2711:58 am -
1 stop16h 32m
Fri 12/412:35 pm -
1 stop16h 05m
Deal found 11/13$898
Wed 12/306:44 pm -
1 stop9h 46m
Wed 1/66:00 am -
2 stops37h 22m
Deal found 11/15$1,066
Sat 12/2610:59 am -
2 stops30h 31m
Sat 1/26:30 am -
2 stops23h 29m
Deal found 11/11$1,563
Sat 12/267:37 pm -
2 stops31h 33m
Sat 1/210:15 am -
2 stops28h 53m
Deal found 11/10$1,797
Sat 12/266:44 pm -
1 stop32h 26m
Sat 1/210:15 am -
1 stop12h 54m
Deal found 11/14$2,318

Find flight deals from Greenville to Portugal

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$749
(United Airlines)

One-way from

$357
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$1,890
Provider with most accurate pricing for Greenville-Lisbon Humberto Delgado flight deals.
Provider most trusted by Cheapflights users for Greenville-Lisbon Humberto Delgado flights.
From Greenville to Portugal
One-way flight from Greenville to Portugal
Highest demand for flights based on searches. 27% potential increase in price ($474 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($61 potential savings vs. average RT price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

 
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 Greenville - LIS Lisbon Humberto Delgado

GSPLIS

Greenville

Sat 2/27

7:45 pm-8:10 am

2 stops31h 25m

Lisbon Humberto Delgado

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$357

GreenvilleLisbon

GSP Greenville - LIS Lisbon Humberto Delgado

GSPLIS

Greenville

Fri 12/25

8:00 am-8:50 am

1 stop19h 50m

Lisbon Humberto Delgado

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$521
Quickest round-trip

GreenvilleLisbon

GSP Greenville - LIS Lisbon Humberto Delgado

GSPLIS

Greenville

Thu 12/24

7:37 pm-10:20 am

1 stop9h 43m

Lisbon Humberto Delgado

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$530

GreenvilleLisbon

GSP Greenville - LIS Lisbon Humberto Delgado

GSPLIS

Greenville

Sun 2/14

6:37 am-8:10 am

2 stops20h 33m

Lisbon Humberto Delgado

Thu 2/18

8:55 am-11:15 pm

2 stops43h 20m

$760

GreenvilleLisbon

GSP Greenville - LIS Lisbon Humberto Delgado

GSPLIS

Greenville

Tue 1/5

2:57 pm-6:55 am

2 stops34h 58m

Lisbon Humberto Delgado

Fri 2/5

10:15 am-11:34 pm

1 stop18h 19m

$773

GreenvillePorto

GSP Greenville - OPO Porto

GSPOPO

Greenville

Sun 2/28

12:28 pm-9:30 am

1 stop16h 02m

Porto

Sun 3/7

6:00 am-11:54 pm

2 stops22h 54m

$778

GreenvillePorto

GSP Greenville - OPO Porto

GSPOPO

Greenville

Sun 12/6

12:15 pm-9:30 am

1 stop16h 15m

Porto

Tue 12/15

6:00 am-8:59 pm

2 stops19h 59m

$781

GreenvillePorto

GSP Greenville - OPO Porto

GSPOPO

Greenville

Sun 2/28

8:05 am-10:35 am

2 stops21h 30m

Porto

Sun 3/7

5:00 am-8:14 pm

2 stops20h 14m

$782

GreenvilleLisbon

GSP Greenville - LIS Lisbon Humberto Delgado

GSPLIS

Greenville

Sun 1/24

12:35 pm-8:10 am

1 stop14h 35m

Lisbon Humberto Delgado

Sun 1/31

10:40 am-11:34 pm

2 stops41h 54m

$794

GreenvilleLisbon

GSP Greenville - LIS Lisbon Humberto Delgado

GSPLIS

Greenville

Sun 1/24

3:53 pm-9:05 am

1 stop12h 12m

Lisbon Humberto Delgado

Sun 1/31

11:05 am-8:46 pm

1 stop14h 41m

$805

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 18 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

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 $726). Flying from Greenville to Portugal in December is currently the most expensive (average of $1,930). 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

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.

Food

6.7

Overall

7.3

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Asha,Sep 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.

Food

6.7

Overall

7.3

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Asha,Sep 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.

Food

6.7

Overall

7.3

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Asha,Sep 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.

Food

6.7

Overall

7.3

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Asha,Sep 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.

Related info for your journey

  • 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, Delta, and KLM fly from Greenville to Portugal in about 20h 33m. The time it takes to get you to your destination can typically vary by up to 16h 55m. 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 $726). Flying from Greenville to Portugal in December is currently the most expensive (average of $1,930). 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

Top 3 airlines flying from Greenville to Portugal

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$510Average$1,043FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$624Average$1,091FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$681Average$1,504FlexibilityNo cancel feeOn-time71%

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