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$555+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — LIS
Jun 8 — Jun 151
Mon 6/8
Mon 6/15
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 9, 2026.

This United Airlines deal was found by Cheapflights users on 5/3. 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 11/98:45 am
GSP
-
LIS
1 stop18h 25m
United Airlines
Thu 11/125:00 am
LIS
-
GSP
2 stops21h 11m
United Airlines
Deal found 5/3$750
This United Airlines deal was found by Cheapflights users on 5/7. 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 11/82:54 pm
GSP
-
LIS
1 stop14h 21m
United Airlines
Tue 11/1011:55 am
LIS
-
GSP
1 stop11h 55m
United Airlines
Deal found 5/7$762
This Delta deal was found by Cheapflights users on 5/4. 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 9/225:05 pm
GSP
-
OPO
2 stops17h 20m
Delta
Sat 9/266:10 am
OPO
-
GSP
2 stops20h 15m
Delta
Deal found 5/4$913
This Delta deal was found by Cheapflights users on 5/7. 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 7/68:52 am
GSP
-
OPO
2 stops18h 38m
Delta
Tue 7/216:15 am
OPO
-
GSP
2 stops22h 39m
Delta
Deal found 5/7$951
This United Airlines deal was found by Cheapflights users on 5/8. 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 7/67:49 pm
GSP
-
OPO
1 stop29h 26m
United Airlines
Tue 7/2112:35 pm
OPO
-
GSP
1 stop15h 59m
United Airlines
Deal found 5/8$953
This KAYAK deal was found by Cheapflights users on 5/4. 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 9/227:00 am
GSP
-
OPO
1 stop18h 15m
Lufthansa
Sat 9/2612:20 pm
OPO
-
GSP
2 stops16h 09m
Lufthansa
Deal found 5/4$961
This United Airlines deal was found by Cheapflights users on 5/8. 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 7/67:49 pm
GSP
-
OPO
1 stop29h 26m
United Airlines
Mon 7/2012:10 pm
OPO
-
GSP
2 stops40h 24m
United Airlines
Deal found 5/8$968
This Expedia deal was found by Cheapflights users on 5/4. 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.
Tue 9/227:51 am
GSP
-
LIS
1 stop20h 14m
British Airways
Sat 9/266:55 pm
LIS
-
GSP
2 stops31h 53m
British Airways
Deal found 5/4$1,024
This Air France deal was found by Cheapflights users on 5/4. 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.
Tue 9/226:20 pm
GSP
-
LIS
2 stops15h 35m
Air France
Sat 9/265:35 am
LIS
-
GSP
2 stops15h 38m
Air France
Deal found 5/4$1,032
This Delta deal was found by Cheapflights users on 5/5. 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.
Fri 7/316:47 pm
GSP
-
LIS
2 stops15h 08m
Delta
Fri 8/75:35 am
LIS
-
GSP
2 stops17h 40m
Delta
Deal found 5/5$1,036
This United Airlines deal was found by Cheapflights users on 5/4. 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.
Fri 9/187:51 pm
GSP
-
LIS
2 stops31h 29m
United Airlines
Sun 9/271:00 pm
LIS
-
GSP
2 stops53h 35m
United Airlines
Deal found 5/4$1,042
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Fri 7/316:30 am
GSP
-
LIS
2 stops23h 35m
United Airlines
Fri 8/710:25 am
LIS
-
GSP
1 stop17h 48m
United Airlines
Deal found 5/5$1,044

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 9, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$913
(Delta)

One-way from

$555
(Kiwi.com)

Popular in

July

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. 17% potential increase in price ($200 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 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 9, 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

Tue 9/22

5:05 pm-3:25 pm

2 stops17h 20m

Porto

Sat 9/26

6:10 am-9:25 pm

2 stops20h 15m

$913

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

8:52 am-8:30 am

2 stops18h 38m

Porto

Tue 7/21

6:15 am-11:54 pm

2 stops22h 39m

$951

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

7:49 pm-6:15 am

1 stop29h 26m

Porto

Tue 7/21

12:35 pm-11:34 pm

1 stop15h 59m

$953

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

7:49 pm-6:15 am

1 stop29h 26m

Porto

Mon 7/20

12:35 pm-11:34 pm

1 stop15h 59m

$1,023

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Fri 9/18

7:51 pm-8:20 am

2 stops31h 29m

Lisbon Humberto Delgado

Sun 9/27

1:00 pm-1:35 pm

2 stops53h 35m

$1,042

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Fri 7/31

7:49 pm-11:05 am

2 stops34h 16m

Lisbon Humberto Delgado

Mon 8/10

5:05 am-5:04 pm

2 stops40h 59m

$1,055

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Tue 6/9

6:30 am-8:20 am

1 stop20h 50m

Lisbon Humberto Delgado

Thu 6/18

11:25 am-11:29 pm

2 stops41h 04m

$1,104

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Tue 6/9

10:30 am-1:40 pm

2 stops22h 10m

Lisbon Humberto Delgado

Fri 6/19

11:25 am-11:29 pm

2 stops41h 04m

$1,112

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Tue 6/9

8:52 am-8:00 am

2 stops18h 08m

Lisbon Humberto Delgado

Thu 6/18

5:00 am-10:20 pm

2 stops22h 20m

$1,118
Quickest round-trip

GreenvilleLisbon

GSP - LIS

GSPLIS

Greenville

Wed 6/24

7:40 pm-3:35 pm

2 stops14h 55m

Lisbon Humberto Delgado

Fri 7/10

10:25 am-11:34 pm

1 stop18h 09m

$1,147

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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 December is currently the most expensive (average of $1,142). 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 9, 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
9,693 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,693 reviews
United Airlines
7.4
Good
9,693 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
American Airlines
7.1
Good
11,670 reviews
United Airlines
7.4
Good
9,693 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
British Airways
6.7
Okay
7,954 reviews
United Airlines
7.4
Good
9,693 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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 Delta and United Airlines fly from Greenville to Portugal in about 17h 20m. The time it takes to get you to your destination can typically vary by up to 12h 06m. 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 December is currently the most expensive (average of $1,142). 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 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$509Average$1,002FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$535Average$919FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$559Average$1,103FlexibilityNo cancel feeOn-time69%

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