HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$486+ 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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — OPO
Feb 6 — Feb 131
Fri 2/6
Fri 2/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Greenville to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 January 7, 2026.

Round-trip from

$486
(American Airlines)

One-way from

$264
(Expedia)
From Greenville to Porto
Search Deals
One-way flight from Greenville to Porto
Search Deals

Find 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 January 7, 2026.

This American Airlines deal was found by Cheapflights users on 1/6. 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.
Fri 2/2011:29 amGSP - OPO
2 stops19h 16mAmerican Airlines
Fri 2/278:20 amOPO - GSP
2 stops18h 54mAmerican Airlines
Deal found 1/6$486
This United Airlines deal was found by Cheapflights users on 1/6. 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 2/1910:00 amGSP - OPO
2 stops20h 40mUnited Airlines
Mon 2/236:00 amOPO - GSP
2 stops37h 16mUnited Airlines
Deal found 1/6$507
This KAYAK deal was found by Cheapflights users on 1/6. 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 4/147:42 pmGSP - OPO
2 stops22h 43mLufthansa
Tue 4/286:00 amOPO - GSP
2 stops43h 47mLufthansa
Deal found 1/6$515
This Expedia deal was found by Cheapflights users on 1/6. 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.
Fri 2/202:51 pmGSP - OPO
2 stops18h 54mLufthansa
Fri 2/2712:45 pmOPO - GSP
1 stop16h 14mLufthansa
Deal found 1/6$516
This United Airlines deal was found by Cheapflights users on 1/7. 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.
Tue 4/146:30 amGSP - OPO
2 stops23h 40mUnited Airlines
Sun 4/196:00 amOPO - GSP
2 stops32h 58mUnited Airlines
Deal found 1/7$603
This American Airlines deal was found by Cheapflights users on 1/6. 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 4/141:44 pmGSP - OPO
2 stops12h 56mAmerican Airlines
Sun 4/198:20 amOPO - GSP
2 stops16h 29mAmerican Airlines
Deal found 1/6$689
This KAYAK deal was found by Cheapflights users on 1/6. 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.
Mon 1/125:34 pmGSP - OPO
2 stops38h 16mLufthansa
Thu 1/226:00 amOPO - GSP
2 stops22h 48mLufthansa
Deal found 1/6$692
This United Airlines deal was found by Cheapflights users on 1/7. 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.
Mon 1/122:55 pmGSP - OPO
2 stops19h 00mUnited Airlines
Thu 1/226:00 amOPO - GSP
2 stops19h 47mUnited Airlines
Deal found 1/7$698
This Delta deal was found by Cheapflights users on 1/5. 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.
Thu 4/167:59 pmGSP - OPO
2 stops14h 16mDelta
Sun 4/197:35 amOPO - GSP
2 stops17h 26mDelta
Deal found 1/5$771
This Delta deal was found by Cheapflights users on 1/5. 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.
Tue 4/145:40 pmGSP - OPO
2 stops16h 35mDelta
Sun 4/197:35 amOPO - GSP
2 stops18h 32mDelta
Deal found 1/5$796
This FlightHub deal was found by Cheapflights users on 1/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/91:10 pmGSP - OPO
2 stops36h 40mMultiple Airlines
Tue 6/236:00 amOPO - GSP
2 stops22h 19mMultiple Airlines
Deal found 1/7$801

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 January 7, 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

Thu 2/19

12:05 pm-11:40 am

2 stops18h 35m

Porto

Mon 2/23

6:00 am-3:36 pm

2 stops38h 36m

$507

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

7:42 pm-11:25 pm

2 stops22h 43m

Porto

Tue 4/28

6:00 am-8:47 pm

2 stops43h 47m

$515

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

6:30 am-11:10 am

2 stops23h 40m

Porto

Sun 4/19

6:00 am-9:58 am

2 stops32h 58m

$603

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

1:44 pm-7:40 am

2 stops12h 56m

Porto

Sun 4/19

8:20 am-7:49 pm

2 stops16h 29m

$689

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 4/15

7:00 am-9:45 am

2 stops21h 45m

Porto

Sun 4/19

6:00 am-9:58 am

2 stops32h 58m

$698

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Thu 4/16

7:59 pm-3:15 pm

2 stops14h 16m

Porto

Sun 4/19

7:35 am-8:01 pm

2 stops17h 26m

$771

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

5:40 pm-3:15 pm

2 stops16h 35m

Porto

Sun 4/19

7:35 am-9:07 pm

2 stops18h 32m

$796

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 6/9

1:10 pm-6:50 am

2 stops36h 40m

Porto

Tue 6/23

6:00 am-11:19 pm

2 stops22h 19m

$801

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 4/15

7:42 pm-3:40 pm

2 stops14h 58m

$734

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

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.

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 35m. Fly via Delta, 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.

See more FAQs

Traveling to a place near Porto?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.