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Portugal

$321+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — LIS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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 3/26:30 am
GSP
-
OPO
2 stops22h 00m
United Airlines
Fri 3/136:00 am
OPO
-
GSP
2 stops36h 17m
United Airlines
Deal found 1/27$492
This Delta deal was found by Cheapflights users on 1/27. 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 3/27:20 am
GSP
-
OPO
2 stops22h 10m
Delta
Mon 3/1611:15 am
OPO
-
GSP
2 stops36h 22m
Delta
Deal found 1/27$494
This Delta deal was found by Cheapflights users on 1/27. 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.
Sun 3/17:40 pm
GSP
-
OPO
2 stops57h 50m
Delta
Mon 3/1611:15 am
OPO
-
GSP
2 stops27h 44m
Delta
Deal found 1/27$496
This KAYAK deal was found by Cheapflights users on 1/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:05 pm
GSP
-
OPO
2 stops20h 10m
Lufthansa
Fri 3/136:30 am
OPO
-
GSP
2 stops42h 21m
Lufthansa
Deal found 1/27$497
This Delta deal was found by Cheapflights users on 1/27. 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.
Tue 3/311:36 am
GSP
-
OPO
2 stops17h 54m
Delta
Mon 3/165:00 am
OPO
-
GSP
2 stops33h 59m
Delta
Deal found 1/27$500
This United Airlines deal was found by Cheapflights users on 1/27. 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 3/26:30 am
GSP
-
LIS
2 stops20h 40m
United Airlines
Mon 3/1610:15 am
LIS
-
GSP
1 stop17h 44m
United Airlines
Deal found 1/27$501
This Delta deal was found by Cheapflights users on 1/27. 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.
Wed 3/411:36 am
GSP
-
OPO
2 stops17h 54m
Delta
Tue 3/1711:25 am
OPO
-
GSP
2 stops27h 34m
Delta
Deal found 1/27$506
This KAYAK deal was found by Cheapflights users on 1/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:05 pm
GSP
-
OPO
2 stops18h 35m
Lufthansa
Wed 3/186:00 am
OPO
-
GSP
2 stops21h 59m
Lufthansa
Deal found 1/27$508
This oojo deal was found by Cheapflights users on 1/27. 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 4/147:10 am
GSP
-
LIS
2 stops34h 50m
British Airways
Tue 4/217:10 am
LIS
-
GSP
2 stops32h 25m
British Airways
Deal found 1/27$515
This British Airways deal was found by Cheapflights users on 1/27. 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.
Mon 3/26:00 am
GSP
-
LIS
2 stops25h 05m
Multiple Airlines
Mon 3/167:05 am
LIS
-
GSP
2 stops19h 17m
Multiple Airlines
Deal found 1/27$528
This Ovago deal was found by Cheapflights users on 1/26. 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 2/1810:50 am
GSP
-
LIS
1 stop17h 05m
British Airways
Fri 3/611:05 am
LIS
-
GSP
1 stop28h 37m
British Airways
Deal found 1/26$533
This Delta deal was found by Cheapflights users on 1/27. 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.
Sun 4/265:40 am
GSP
-
LIS
2 stops21h 20m
Delta
Wed 5/135:00 am
LIS
-
GSP
2 stops22h 00m
Delta
Deal found 1/27$546

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$492
(United Airlines)

One-way from

$321
(Expedia)

Popular in

June

Cheapest in

February

Average price

$655
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. 26% potential increase in price ($331 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 29, 2026.
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

Mon 3/2

2:51 pm-9:30 am

2 stops13h 39m

Porto

Tue 3/17

6:00 am-10:01 am

2 stops32h 01m

$492

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 3/3

6:30 am-9:30 am

2 stops22h 00m

Porto

Fri 3/13

6:00 am-2:17 pm

2 stops36h 17m

$492

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 3/1

7:40 pm-10:30 am

2 stops57h 50m

Porto

Mon 3/16

11:15 am-10:59 am

2 stops27h 44m

$496

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 3/4

11:36 am-10:30 am

2 stops17h 54m

Porto

Mon 3/16

11:15 am-7:37 pm

2 stops36h 22m

$500

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 3/3

11:36 am-10:30 am

2 stops17h 54m

Porto

Mon 3/16

5:00 am-10:59 am

2 stops33h 59m

$500

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Mon 3/2

2:51 pm-10:15 am

1 stop14h 24m

Lisbon Humberto Delgado

Mon 3/16

10:15 am-11:59 pm

1 stop17h 44m

$501

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Mon 3/2

6:00 am-12:05 pm

2 stops25h 05m

Lisbon Humberto Delgado

Mon 3/16

7:05 am-10:22 pm

2 stops19h 17m

$528

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Wed 2/18

10:50 am-8:55 am

1 stop17h 05m

Lisbon Humberto Delgado

Fri 3/6

11:05 am-10:42 am

1 stop28h 37m

$533

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Tue 4/14

11:00 am-11:00 pm

2 stops31h 00m

Lisbon Humberto Delgado

Tue 4/21

11:05 am-5:44 pm

1 stop11h 39m

$544

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Sun 4/26

5:40 am-8:00 am

2 stops21h 20m

Lisbon Humberto Delgado

Wed 5/13

5:00 am-10:00 pm

2 stops22h 00m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 34 results
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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.

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 January 29, 2026.
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
9,215 reviews

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,206 reviews
United Airlines
7.4
Good
9,215 reviews

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,705 reviews
United Airlines
7.4
Good
9,215 reviews

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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, Delta, and British Airways fly from Greenville to Portugal in about 17h 05m. The time it takes to get you to your destination can typically vary by up to 40h 45m. 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 $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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$535Average$939FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$587Average$1,067FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$672Average$954FlexibilityNo cancel feeOn-time69%

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