How long is the flight from Greenville to Porto?

There are many flights that can get you from Greenville to Porto in 16h 02m. Fly via United Airlines to get the fastest option. The distance between Greenville and Porto is about 3901 mi.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

What is the cheapest time of day to fly from GSP to OPO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Greenville to Porto as you normally would.

Most accurate provider : When it comes to deals on Greenville-Porto flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Greenville-Porto flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Greenville-Porto flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Greenville-Porto flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Greenville-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$728+ Cheap Flights from Greenville to Porto

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1. Tell us where you want to go

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Cheap flight deals from Greenville to Porto

Cheapest

Best

Last-minute

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 November 8, 2026.

Sat 12/125:34 pm -

2 stops34h 56m

Tue 12/226:00 am -

2 stops32h 28m

Deal found 11/8

$749

Tue 12/156:30 am -

2 stops22h 00m

Wed 12/2312:35 pm -

2 stops25h 53m

Deal found 11/8

$834

Sun 12/207:37 pm -

2 stops32h 53m

Sun 12/276:00 am -

2 stops37h 15m

Deal found 11/5

$1,376

Sun 12/206:00 am -

1 stop22h 30m

Sun 12/2712:35 pm -

1 stop25h 47m

Deal found 11/5

$1,804

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 November 8, 2026.

Mon 2/2212:28 pm -

1 stop16h 02m

Fri 2/266:00 am -

2 stops22h 15m

Deal found 11/6

$728

Mon 2/2212:28 pm -

1 stop16h 02m

Fri 2/266:00 am -

2 stops22h 15m

Deal found 11/7

$728

Sun 2/146:37 am -

2 stops27h 43m

Wed 2/176:00 am -

2 stops22h 15m

Deal found 11/3

$745

Tue 12/156:00 am -

1 stop22h 30m

Wed 12/2312:35 pm -

1 stop25h 42m

Deal found 11/8

$850

Sat 12/1212:15 pm -

1 stop16h 15m

Tue 12/2212:35 pm -

1 stop15h 00m

Deal found 11/8

$887

Sun 12/207:37 pm -

2 stops32h 53m

Sun 12/276:00 am -

2 stops37h 15m

Deal found 11/5

$1,376

Last-minute flights from Greenville to Porto
Discover last-minute flight deals from Greenville to Porto. Data last updated November 8, 2026 and is based on user searches.

Sat 12/125:34 pm -

2 stops34h 56m

Tue 12/226:00 am -

2 stops32h 28m

Deal found 11/8

$749

Tue 12/156:30 am -

2 stops22h 00m

Wed 12/2312:35 pm -

2 stops25h 53m

Deal found 11/8

$834

Sun 12/207:37 pm -

2 stops32h 53m

Sun 12/276:00 am -

2 stops37h 15m

Deal found 11/5

$1,376

Sun 12/206:00 am -

1 stop22h 30m

Sun 12/2712:35 pm -

1 stop25h 47m

Deal found 11/5

$1,804

Find flight deals from Greenville to Porto

Most accurate provider	Ovago 3 stars
Most trusted provider	Ovago 3 stars
Round-trip from	$728 (United)

Provider with most accurate pricing for Greenville-Porto flight deals.

Search Deals

Provider most trusted by Cheapflights users for Greenville-Porto flights.

Search Deals

From Greenville to Porto

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

GreenvillePorto

GSP Greenville - OPO Porto

GSPOPO

Greenville

Mon 2/22

12:28 pm-9:30 am

1 stop16h 02m

Porto

Fri 2/26

6:00 am-11:15 pm

2 stops22h 15m

$728

GreenvillePorto

GSP Greenville - OPO Porto

GSPOPO

Greenville

Mon 2/22

12:28 pm-9:30 am

1 stop16h 02m

Porto

Fri 2/26

6:00 am-11:15 pm

2 stops22h 15m

$728

GreenvillePorto

GSP Greenville - OPO Porto

GSPOPO

Greenville

Sun 2/14

6:37 am-3:20 pm

2 stops27h 43m

Porto

Wed 2/17

6:00 am-11:15 pm

2 stops22h 15m

$745

GreenvillePorto

GSP Greenville - OPO Porto

GSPOPO

Greenville

Tue 12/15

6:00 am-9:30 am

1 stop22h 30m

Porto

Wed 12/23

12:35 pm-9:17 am

1 stop25h 42m

$850

Quickest round-trip

GreenvillePorto

GSP Greenville - OPO Porto

GSPOPO

Greenville

Sat 12/12

12:15 pm-9:30 am

1 stop16h 15m

Porto

Tue 12/22

12:35 pm-10:35 pm

1 stop15h 00m

$887

GreenvillePorto

GSP Greenville - OPO Porto

GSPOPO

Greenville

Sun 12/20

7:37 pm-9:30 am

2 stops32h 53m

Porto

Sun 12/27

6:00 am-2:15 pm

2 stops37h 15m

$1,376

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Sorted by cheapest first

Compare providers for flights from Greenville to Porto

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Greenville to Porto in November.

Provider	Price Accuracy	Trust Score*
Ovago	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Greenville-Porto flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Greenville-Porto flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Greenville-Porto flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Greenville-Porto flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Greenville-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

GSP-OPO

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

How long is the flight from Greenville to Porto?
There are many flights that can get you from Greenville to Porto in 16h 02m. Fly via United Airlines to get the fastest option. The distance between Greenville and Porto is about 3901 mi.
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.

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$728+ 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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Greenville to Porto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Greenville to Porto

Cheapest flights from Greenville to PortoExplore 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 November 8, 2026.

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 November 8, 2026.

Best flights from Greenville to PortoDiscover 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 November 8, 2026.

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 November 8, 2026.

Last-minute flights from Greenville to PortoDiscover last-minute flight deals from Greenville to Porto. Data last updated November 8, 2026 and is based on user searches.

Discover last-minute flight deals from Greenville to Porto. Data last updated November 8, 2026 and is based on user searches.

Find flight deals from Greenville to Porto

Most accurate provider

Most trusted provider

Round-trip from

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Use the filters below to find and compare flights from Greenville to Porto that are best for you.

Compare providers for flights from Greenville to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Greenville to Porto in November.

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.

Related info for your journey

How long is the flight from Greenville to Porto?

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

How can I find direct flights from Greenville to Porto?

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

Traveling to a place near Porto?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Greenville to Porto

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Porto by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Greenville to Porto by cabin class

Find flights from Greenville to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Greenville and Porto flights

Browse other Greenville and Porto flight options. Last updated on November 8, 2026.

Other flights from Greenville

Browse through other flights departing from Greenville. Flights are based on user searches made on Cheapflights and were last updated on November 8, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to Porto

Explore flights to Porto departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 8, 2026.

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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 November 8, 2026.

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 November 8, 2026.

Last-minute flights from Greenville to Porto
Discover last-minute flight deals from Greenville to Porto. Data last updated November 8, 2026 and is based on user searches.