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Cheap flights from Greenville to Porto from $597

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Greenville to Porto departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Greenville to Porto

Cheap round-trip flights

Delta Logo
7:15 am - 10:30 amGSP-OPO
22h 15m2 stops
Delta Logo
6:35 am - 9:22 pmOPO-GSP
19h 47m2 stops
$597Delta
Find Deal
Mon, Jan 12 - Thu, Jan 22
Multiple Airlines Logo
6:44 pm - 3:30 pmGSP-OPO
15h 46m2 stops
Multiple Airlines Logo
11:15 am - 10:09 amOPO-GSP
26h 54m2 stops
$677Multiple Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
United Airlines Logo
6:05 pm - 9:45 amGSP-OPO
10h 40m1 stop
United Airlines Logo
6:00 am - 8:49 pmOPO-GSP
18h 49m2 stops
$770United Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
Lufthansa Logo
6:05 pm - 9:45 amGSP-OPO
10h 40m1 stop
Lufthansa Logo
12:35 pm - 11:56 pmOPO-GSP
15h 21m1 stop
$1,043Lufthansa
Find Deal
Wed, Oct 22 - Wed, Oct 29
Delta Logo
7:59 pm - 10:25 pmGSP-OPO
21h 26m2 stops
Delta Logo
11:25 am - 10:00 pmOPO-GSP
15h 35m2 stops
$1,509Delta
Find Deal
Sun, Dec 21 - Sun, Dec 28
Delta Logo
7:59 pm - 10:25 pmGSP-OPO
21h 26m2 stops
Delta Logo
11:25 am - 10:00 pmOPO-GSP
15h 35m2 stops
$1,569Delta
Find Deal
Sun, Dec 21 - Sun, Dec 28
Air Canada Logo
1:05 pm - 1:00 pmGSP-OPO
18h 55m3 stops
Air Canada Logo
6:55 am - 11:56 pmOPO-GSP
22h 01m3 stops
$2,711Air Canada
Find Deal
Sun, Dec 21 - Sun, Dec 28

Delta flights from Greenville to Porto

Our best Delta deals on Greenville to Porto flight tickets
Delta
Jan 12
GSP7:15 amGreenville
22h 15m
2 stops
OPO10:30 amPorto
Jan 22
OPO6:35 amPorto
19h 47m
2 stops
GSP9:22 pmGreenville
$597
Find similar
Delta
Dec 21
GSP7:59 pmGreenville
21h 26m
2 stops
OPO10:25 pmPorto
Dec 28
OPO11:25 amPorto
15h 35m
2 stops
GSP10:00 pmGreenville
$1,509
Find similar
Delta
Dec 21
GSP7:59 pmGreenville
21h 26m
2 stops
OPO10:25 pmPorto
Dec 28
OPO11:25 amPorto
15h 35m
2 stops
GSP10:00 pmGreenville
$1,569
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 24, 2025.
Use the filters below to find and compare flights from Greenville to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 1/12

7:15 am-10:30 am

2 stops22h 15m

Porto

Thu 1/22

6:35 am-9:22 pm

2 stops19h 47m

$597

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 10/22

6:44 pm-3:30 pm

2 stops15h 46m

Porto

Wed 10/29

11:15 am-10:09 am

2 stops26h 54m

$677

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 10/22

6:05 pm-9:45 am

1 stop10h 40m

Porto

Wed 10/29

6:00 am-8:49 pm

2 stops18h 49m

$770

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 10/22

6:05 pm-9:45 am

1 stop10h 40m

Porto

Wed 10/29

12:35 pm-11:56 pm

1 stop15h 21m

$1,043

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 12/21

7:59 pm-10:25 pm

2 stops21h 26m

Porto

Sun 12/28

11:25 am-10:00 pm

2 stops15h 35m

$1,509

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 12/21

7:59 pm-10:25 pm

2 stops21h 26m

Porto

Sun 12/28

11:25 am-10:00 pm

2 stops15h 35m

$1,569

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 12/21

1:05 pm-1:00 pm

3 stops18h 55m

Porto

Sun 12/28

6:55 am-11:56 pm

3 stops22h 01m

$2,711

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Greenville to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Tuesday when prices can be found for as low as $658. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,207. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

At noon is the cheapest time of day to fly from Greenville to Porto when you can find flight prices for as low as $658. Flying to Porto at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,184 on average. Flights to Porto from Greenville in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Greenville to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Greenville to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Greenville to Porto (GSP to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Greenville to Porto

Direct flights

None
There are no direct flights from Greenville to Porto. There are no popular flight routes from Greenville to Porto.
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  • How far is Greenville to Porto by plane?

    The straight-line distance from Greenville to Porto is 3915.7 mi. Typically, this will take 10h 40m by plane in normal conditions.

  • When did momondo last update prices for flights from Greenville Airport to Porto Airport?

    Prices for flights from Greenville Airport to Porto Airport were last updated today.

  • How many operators does momondo search for flights from Greenville Airport to Porto Airport?

  • How old do you have to be to fly from Greenville Airport to Porto Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Greenville Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The required travel and health documents for your Porto Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Greenville to Porto?

Best airlines flying from Greenville to Porto

Compare and see reviews for airlines that fly from Greenville to Porto with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $577Free CancellationRating
7.9
7,973 reviews
Search Delta flights
United AirlinesPriceFrom $751Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Aveiro
Coimbra
Braga
Matosinhos
Caminha
Esposende
Lamego
Guimarães
Chaves
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
Pinhao
Santa Maria da Feira
Curia
Penafiel
Mesao Frio
Mira

Why use momondo?

Why should I use momondo to find a flight deal from Greenville to Porto?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Greenville to Porto. momondo saves you time and could save you money on your trip.

Can I find flights from Greenville to Porto with flexible booking policies on momondo?

Yes. All flights to Porto from Greenville on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Greenville to Porto?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Porto from Greenville.

I’m not ready to book a flight from Greenville to Porto right now. Can momondo alert me if prices change?

Price alerts on flights to Porto from Greenville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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