HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$506+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — OPO
ene. 25 — feb. 11
dom. 1/25
dom. 2/1
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

Best flights from Greenville to Porto
Discover carefully curated flight deals from Greenville to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 26, 2025.

This United Airlines deal was found by Cheapflights users on 12/24. 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. 2/44:50 pmGSP - OPO
2 stops40h 55mUnited Airlines
dom. 2/86:00 amOPO - GSP
2 stops42h 29mUnited Airlines
Deal found 12/24$506
This Ovago deal was found by Cheapflights users on 12/24. 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.
mar. 4/1412:07 pmGSP - OPO
1 stop16h 38mLufthansa
dom. 4/196:00 amOPO - GSP
2 stops19h 47mLufthansa
Deal found 12/24$1,036
This United Airlines deal was found by Cheapflights users on 12/25. 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 amGSP - OPO
2 stops24h 10mUnited Airlines
lun. 2/236:00 amOPO - GSP
2 stops38h 36mUnited Airlines
Deal found 12/25$607
This TAP AIR PORTUGAL deal was found by Cheapflights users on 12/24. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 1/1211:49 amGSP - OPO
1 stop19h 01mMultiple Airlines
jue. 1/229:00 amOPO - GSP
2 stops19h 48mMultiple Airlines
Deal found 12/24$1,398
This United Airlines deal was found by Cheapflights users on 12/25. 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.
mar. 4/144:55 pmGSP - OPO
2 stops35h 50mUnited Airlines
dom. 4/196:00 amOPO - GSP
2 stops32h 58mUnited Airlines
Deal found 12/25$692

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 diciembre 26, 2025.

Round-trip from

$506
(United Airlines)
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 diciembre 26, 2025.
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

mié. 2/4

4:50 pm-2:45 pm

2 stops40h 55m

Porto

dom. 2/8

6:00 am-7:29 pm

2 stops42h 29m

$506

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

jue. 2/19

6:30 am-11:40 am

2 stops24h 10m

Porto

lun. 2/23

6:00 am-3:36 pm

2 stops38h 36m

$607

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

mar. 4/14

4:55 pm-9:45 am

2 stops35h 50m

Porto

dom. 4/19

6:00 am-9:58 am

2 stops32h 58m

$692

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

mar. 4/14

12:07 pm-9:45 am

1 stop16h 38m

Porto

dom. 4/19

6:00 am-8:47 pm

2 stops19h 47m

$1,036

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

lun. 1/12

11:49 am-11:50 am

1 stop19h 01m

Porto

jue. 1/22

9:00 am-11:48 pm

2 stops19h 48m

$1,398

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

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 time of day to fly from GSP to OPO?

Find hourly flight availability from Greenville to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 26, 2025.

It’s optimal to fly from Greenville to Porto at noon. By choosing this option you can save up to 44% on the cost of your flight, compared to a flight in the afternoon.

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 16h 38m. 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.

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.