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$502+ Cheap flights from Greenville (GSP) to Porto (OPO)

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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — OPO
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
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 February 4, 2026.

This FlightHub deal was found by Cheapflights users on 2/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1410:33 am
GSP
-
OPO
2 stops41h 47m
Multiple Airlines
Tue 4/286:00 am
OPO
-
GSP
2 stops21h 45m
Multiple Airlines
Deal found 2/4$502
This KAYAK deal was found by Cheapflights users on 2/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:33 pm
GSP
-
OPO
2 stops29h 17m
Lufthansa
Tue 4/286:00 am
OPO
-
GSP
2 stops21h 45m
Lufthansa
Deal found 2/3$508
This American Airlines deal was found by Cheapflights users on 2/1. 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.
Tue 4/148:03 am
GSP
-
OPO
2 stops18h 37m
American Airlines
Thu 4/238:20 am
OPO
-
GSP
2 stops19h 43m
American Airlines
Deal found 2/1$514
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Thu 3/196:52 am
GSP
-
OPO
2 stops27h 53m
United Airlines
Thu 3/266:00 am
OPO
-
GSP
2 stops41h 28m
United Airlines
Deal found 2/1$611
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 4/148:03 am
GSP
-
OPO
2 stops18h 37m
American Airlines
Sun 4/198:20 am
OPO
-
GSP
2 stops19h 43m
American Airlines
Deal found 2/2$614
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Thu 2/196:30 am
GSP
-
OPO
2 stops24h 10m
United Airlines
Mon 2/2312:30 pm
OPO
-
GSP
2 stops26h 31m
United Airlines
Deal found 2/3$708
This Mytrip deal was found by Cheapflights users on 2/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:33 pm
GSP
-
OPO
2 stops29h 27m
Lufthansa
Thu 4/2312:35 pm
OPO
-
GSP
1 stop15h 10m
Lufthansa
Deal found 2/1$726
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:50 pm
GSP
-
OPO
2 stops15h 20m
Lufthansa
Tue 4/2811:05 am
OPO
-
GSP
2 stops16h 40m
Lufthansa
Deal found 2/3$782
This Gotogate deal was found by Cheapflights users on 2/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:28 pm
GSP
-
OPO
2 stops45h 07m
British Airways
Fri 5/159:10 pm
OPO
-
GSP
2 stops42h 25m
British Airways
Deal found 2/3$807
This Air Canada deal was found by Cheapflights users on 2/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:46 am
GSP
-
OPO
2 stops19h 04m
Air Canada
Sat 9/512:15 pm
OPO
-
GSP
2 stops37h 56m
Air Canada
Deal found 2/3$871

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 February 4, 2026.

Round-trip from

$502
(FlightHub)
From Greenville to Porto
Search Deals

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 February 4, 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

Tue 4/14

10:33 am-9:20 am

2 stops41h 47m

Porto

Tue 4/28

6:00 am-10:45 pm

2 stops21h 45m

$502

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

12:33 pm-10:50 pm

2 stops29h 17m

Porto

Tue 4/28

6:00 am-10:45 pm

2 stops21h 45m

$508

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

8:03 am-7:40 am

2 stops18h 37m

Porto

Thu 4/23

8:20 am-11:03 pm

2 stops19h 43m

$514

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Thu 3/19

6:52 am-2:45 pm

2 stops27h 53m

Porto

Thu 3/26

6:00 am-7:28 pm

2 stops41h 28m

$611

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Thu 2/19

6:30 am-11:40 am

2 stops24h 10m

Porto

Mon 2/23

12:30 pm-10:01 am

2 stops26h 31m

$708

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

12:33 pm-11:00 pm

2 stops29h 27m

Porto

Thu 4/23

12:35 pm-10:45 pm

1 stop15h 10m

$726

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 3/31

2:50 pm-11:10 am

2 stops15h 20m

Porto

Tue 4/28

11:05 am-10:45 pm

2 stops16h 40m

$782

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

12:33 pm-10:50 pm

2 stops29h 17m

Porto

Sun 4/19

12:35 pm-10:45 pm

1 stop15h 10m

$921

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 6/2

1:00 pm-3:25 pm

2 stops21h 25m

Porto

Tue 6/16

6:15 am-10:00 pm

2 stops20h 45m

$938

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 6/28

7:45 am-10:30 am

2 stops21h 45m

Porto

Fri 7/10

9:25 am-10:00 pm

2 stops17h 35m

$938

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 14 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 18h 37m. Fly via Lufthansa, American Airlines, or United Airlines 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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