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Cheap flights from Greenville to Porto from $372

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Greenville to Porto departing on 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Greenville to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 6:55 am
GSP
-
OPO
18h 55m
1 stop
United Airlines Logo
6:00 am - 7:05 pm
OPO
-
GSP
18h 05m
2 stops
$938United Airlines
Wed, Sep 9 - Thu, Sep 17
United Airlines Logo
7:00 am - 7:00 am
GSP
-
OPO
19h 00m
2 stops
United Airlines Logo
6:00 am - 7:45 pm
OPO
-
GSP
18h 45m
2 stops
$941United Airlines
Wed, Sep 9 - Thu, Sep 17
United Airlines Logo
4:00 pm - 6:55 am
GSP
-
OPO
9h 55m
1 stop
United Airlines Logo
12:35 pm - 7:45 pm
OPO
-
GSP
12h 10m
1 stop
$946United Airlines
Wed, Sep 9 - Thu, Sep 17
United Airlines Logo
7:00 am - 7:00 am
GSP
-
OPO
19h 00m
2 stops
United Airlines Logo
12:35 pm - 11:15 pm
OPO
-
GSP
15h 40m
1 stop
$949United Airlines
Wed, Sep 9 - Thu, Sep 17
Multiple Airlines Logo
10:25 am - 7:00 am
GSP
-
OPO
15h 35m
3 stops
Multiple Airlines Logo
11:50 am - 9:35 am
OPO
-
GSP
26h 45m
2 stops
$960Multiple Airlines
Wed, Sep 9 - Thu, Sep 17
United Airlines Logo
11:25 am - 9:45 am
GSP
-
OPO
17h 20m
1 stop
United Airlines Logo
6:00 am - 2:19 pm
OPO
-
GSP
37h 19m
2 stops
$965United Airlines
Fri, Aug 21 - Fri, Aug 28
United Airlines Logo
7:00 am - 7:00 am
GSP
-
OPO
19h 00m
2 stops
United Airlines Logo
6:00 am - 2:19 pm
OPO
-
GSP
37h 19m
2 stops
$969United Airlines
Fri, Aug 21 - Fri, Aug 28
United Airlines Logo
11:18 am - 9:45 am
GSP
-
OPO
17h 27m
1 stop
United Airlines Logo
11:50 am - 7:45 pm
OPO
-
GSP
36h 55m
2 stops
$996United Airlines
Sun, Aug 2 - Thu, Sep 3
Lufthansa Logo
7:40 pm - 11:25 pm
GSP
-
OPO
22h 45m
2 stops
Lufthansa Logo
6:00 am - 11:03 pm
OPO
-
GSP
22h 03m
2 stops
$1,002Lufthansa
Mon, Aug 3 - Fri, Sep 4
United Airlines Logo
11:18 am - 9:45 am
GSP
-
OPO
17h 27m
1 stop
United Airlines Logo
6:00 am - 7:45 pm
OPO
-
GSP
18h 45m
2 stops
$1,008United Airlines
Mon, Aug 3 - Fri, Sep 4

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Lufthansa flights from Greenville to Porto

Our best Lufthansa deals on Greenville to Porto flight tickets
Lufthansa
Aug 3
GSP7:40 pmGreenville
22h 45m
2 stops
OPO11:25 pmPorto
Sep 4
OPO6:00 amPorto
22h 03m
2 stops
GSP11:03 pmGreenville
$1,002
Lufthansa
Sep 17
GSP3:01 pmGreenville
27h 24m
2 stops
OPO11:25 pmPorto
Sep 28
OPO4:35 pmPorto
35h 24m
2 stops
GSP10:59 pmGreenville
$1,012
Lufthansa
Sep 17
GSP3:01 pmGreenville
27h 24m
2 stops
OPO11:25 pmPorto
Sep 28
OPO6:00 amPorto
21h 59m
2 stops
GSP10:59 pmGreenville
$1,014

Air Canada flights from Greenville to Porto

Our best Air Canada deals on Greenville to Porto flight tickets
Air Canada
Aug 3
GSP5:43 pmGreenville
32h 17m
2 stops
OPO7:00 amPorto
Sep 5
OPO12:10 pmPorto
30h 22m
2 stops
GSP1:32 pmGreenville
$1,065
Air Canada
Sep 9
GSP10:25 amGreenville
15h 35m
3 stops
OPO7:00 amPorto
Sep 17
OPO11:00 amPorto
17h 15m
3 stops
GSP11:15 pmGreenville
$1,245
Air Canada
Sep 9
GSP10:25 amGreenville
15h 35m
3 stops
OPO7:00 amPorto
Sep 17
OPO9:00 amPorto
19h 15m
3 stops
GSP11:15 pmGreenville
$1,342

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 July 10, 2026.
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

Cheapest round-trip

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 9/9

7:00 am-6:55 am

1 stop18h 55m

Porto

Thu 9/17

6:00 am-7:05 pm

2 stops18h 05m

$938

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 9/9

7:00 am-7:00 am

2 stops19h 00m

Porto

Thu 9/17

6:00 am-7:45 pm

2 stops18h 45m

$941
Quickest round-trip

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 9/9

4:00 pm-6:55 am

1 stop9h 55m

Porto

Thu 9/17

12:35 pm-7:45 pm

1 stop12h 10m

$946

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 9/9

7:00 am-7:00 am

2 stops19h 00m

Porto

Thu 9/17

12:35 pm-11:15 pm

1 stop15h 40m

$949

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Wed 9/9

10:25 am-7:00 am

3 stops15h 35m

Porto

Thu 9/17

11:50 am-9:35 am

2 stops26h 45m

$960

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Fri 8/21

11:25 am-9:45 am

1 stop17h 20m

Porto

Fri 8/28

6:00 am-2:19 pm

2 stops37h 19m

$965

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Fri 8/21

7:00 am-7:00 am

2 stops19h 00m

Porto

Fri 8/28

6:00 am-2:19 pm

2 stops37h 19m

$969

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 8/2

11:18 am-9:45 am

1 stop17h 27m

Porto

Thu 9/3

11:50 am-7:45 pm

2 stops36h 55m

$996

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 8/3

7:40 pm-11:25 pm

2 stops22h 45m

Porto

Fri 9/4

6:00 am-11:03 pm

2 stops22h 03m

$1,002

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 8/3

11:18 am-9:45 am

1 stop17h 27m

Porto

Fri 9/4

6:00 am-7:45 pm

2 stops18h 45m

$1,008

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

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

Can stopping save me money on Greenville to Porto flights?

You could potentially save up to 13% on your flight if you consider stops on a Greenville to Porto flight.

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

Fastest flight time

17h 20m

Direct flights

None
The fastest flight from Greenville to Porto takes 17h 20m
There are no direct flights from Greenville to Porto. There are no popular flight routes from Greenville to Porto.
Search flight deals

Frequently asked questions about flying from Greenville to Porto

  • How far is Greenville to Porto by plane?

    The straight-line distance from Greenville to Porto is 3915.7 mi. Typically, this will take 17h 20m 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 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.

Traveling to a place near Porto?

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

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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