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$367+ Cheap flights from Greenville (GSP) to Porto (OPO)

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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — OPO
feb. 20 — feb. 271
vie. 2/20
vie. 2/27
1 adult, Economy
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Cheap flight deals from Greenville to Porto

Cheapest flights from Greenville to Porto
Explore the most affordable flight options available from Greenville to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2026.

This United Airlines deal was found by Cheapflights users on 1/18. 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.
jue. 2/196:30 am
GSP
-
OPO
2 stops24h 10m
United Airlines
lun. 2/2312:30 pm
OPO
-
GSP
2 stops26h 31m
United Airlines
Deal found 1/18$506
This KAYAK deal was found by Cheapflights users on 1/19. 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.
mar. 4/147:42 pm
GSP
-
OPO
2 stops22h 43m
Lufthansa
mar. 4/286:00 am
OPO
-
GSP
2 stops19h 47m
Lufthansa
Deal found 1/19$514
This United Airlines deal was found by Cheapflights users on 1/19. 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.
vie. 2/66:35 am
GSP
-
OPO
2 stops24h 05m
United Airlines
mar. 2/106:00 am
OPO
-
GSP
2 stops18h 29m
United Airlines
Deal found 1/19$556
This American Airlines deal was found by Cheapflights users on 1/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/141:44 pm
GSP
-
OPO
2 stops12h 56m
American Airlines
dom. 4/198:20 am
OPO
-
GSP
2 stops20h 38m
American Airlines
Deal found 1/19$561
This Ovago deal was found by Cheapflights users on 1/20. 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.
vie. 3/610:50 am
GSP
-
OPO
2 stops24h 10m
Multiple Airlines
vie. 3/138:20 am
OPO
-
GSP
2 stops16h 26m
Multiple Airlines
Deal found 1/20$658
This KAYAK deal was found by Cheapflights users on 1/19. 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.
mar. 4/147:42 pm
GSP
-
OPO
2 stops22h 43m
Lufthansa
dom. 4/1912:35 pm
OPO
-
GSP
1 stop15h 10m
Lufthansa
Deal found 1/19$886
This Air France deal was found by Cheapflights users on 1/20. 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.
lun. 7/67:55 pm
GSP
-
OPO
2 stops14h 30m
Air France
mar. 7/219:20 am
OPO
-
GSP
2 stops15h 57m
Air France
Deal found 1/20$908
This United Airlines deal was found by Cheapflights users on 1/20. 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.
mié. 6/36:46 am
GSP
-
OPO
2 stops19h 04m
United Airlines
vie. 6/126:00 am
OPO
-
GSP
2 stops20h 11m
United Airlines
Deal found 1/20$957

Find flight deals from Greenville to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Greenville (GSP) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2026.

Round-trip from

$506
(United Airlines)

One-way from

$367
(Kiwi.com)
From Greenville to Porto
Search Deals
One-way flight from Greenville to Porto
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Greenville to Porto 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 enero 21, 2026.
Use the filters below to find and compare flights from Greenville to Porto that are best for you.

Fly from

Greenville

Fly to

Porto

Route

Depart

Return

Price

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

jue. 2/19

6:30 am-11:40 am

2 stops24h 10m

Porto

lun. 2/23

12:30 pm-10:01 am

2 stops26h 31m

$506

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

mar. 4/14

6:30 am-11:10 am

2 stops23h 40m

Porto

mar. 4/28

6:00 am-8:47 pm

2 stops19h 47m

$506

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

mar. 4/14

7:42 pm-11:25 pm

2 stops22h 43m

Porto

mar. 4/28

6:00 am-8:47 pm

2 stops19h 47m

$514

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

vie. 2/6

6:35 am-11:40 am

2 stops24h 05m

Porto

mar. 2/10

6:00 am-7:29 pm

2 stops18h 29m

$556

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

mar. 4/14

1:44 pm-7:40 am

2 stops12h 56m

Porto

dom. 4/19

8:20 am-11:58 pm

2 stops20h 38m

$561

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

vie. 3/6

10:50 am-4:00 pm

2 stops24h 10m

Porto

vie. 3/13

8:20 am-8:46 pm

2 stops16h 26m

$658

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

mar. 4/14

7:42 pm-11:25 pm

2 stops22h 43m

Porto

dom. 4/19

12:35 pm-10:45 pm

1 stop15h 10m

$886

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

lun. 7/6

7:55 pm-3:25 pm

2 stops14h 30m

Porto

mar. 7/21

9:20 am-8:17 pm

2 stops15h 57m

$908

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

lun. 2/16

8:18 pm-11:40 am

3 stops58h 22m

$367

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

lun. 2/16

6:30 am-2:55 pm

2 stops27h 25m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 11 results
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Best time to book a flight from Greenville to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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 Porto

What is the cheapest month to book a flight from Greenville to Porto?

Currently, November is the cheapest month in which you can book a flight from Greenville to Porto (average of $555). Flying from Greenville to Porto in June is currently the most expensive (average of $1,082). 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.

Related info for your journey

Find useful and relevant information for your journey from Greenville to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Greenville to Porto?

    There are many flights that can get you from Greenville to Porto in 22h 43m. Fly via United Airlines or Lufthansa to get the fastest option. The distance between Greenville and Porto is about 3901 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Greenville to Porto that include hotel bookings?

    Yes. In addition to deals on Greenville to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Greenville to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Greenville to Porto.

  • Can I find deals for business class flights from Greenville to Porto?

    Yes. Cheapflights offers flight deals from Greenville to Porto 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 Porto?

    Currently, November is the cheapest month in which you can book a flight from Greenville to Porto (average of $555). Flying from Greenville to Porto in June is currently the most expensive (average of $1,082). 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

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

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