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Cheap flights from Greenville to Porto from $463

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 9/9. 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
0 bags

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Find the cheapest flights from Greenville to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 am - 7:00 am
GSP
-
OPO
19h 30m
2 stops
Multiple Airlines Logo
12:15 pm - 10:37 am
OPO
-
GSP
27h 22m
2 stops
$930Multiple Airlines
Mon, Jul 6 - Tue, Jul 21
United Airlines Logo
7:49 pm - 6:15 am
GSP
-
OPO
29h 26m
1 stop
United Airlines Logo
12:15 pm - 10:37 am
OPO
-
GSP
27h 22m
2 stops
$933United Airlines
Mon, Jul 6 - Tue, Jul 21
Air Canada Logo
7:49 pm - 7:00 am
GSP
-
OPO
54h 11m
2 stops
Air Canada Logo
12:15 pm - 11:34 pm
OPO
-
GSP
40h 19m
2 stops
$936Air Canada
Mon, Jul 6 - Tue, Jul 21
United Airlines Logo
6:30 am - 7:00 am
GSP
-
OPO
19h 30m
2 stops
United Airlines Logo
12:35 pm - 11:34 pm
OPO
-
GSP
15h 59m
1 stop
$950United Airlines
Mon, Jul 6 - Tue, Jul 21
United Airlines Logo
7:49 pm - 6:15 am
GSP
-
OPO
29h 26m
1 stop
United Airlines Logo
9:00 am - 11:34 pm
OPO
-
GSP
19h 34m
1 stop
$953United Airlines
Mon, Jul 6 - Tue, Jul 21
United Airlines Logo
7:49 pm - 7:00 am
GSP
-
OPO
54h 11m
2 stops
United Airlines Logo
9:00 am - 11:34 pm
OPO
-
GSP
19h 34m
1 stop
$956United Airlines
Mon, Jul 6 - Tue, Jul 21
United Airlines Logo
6:30 am - 7:00 am
GSP
-
OPO
19h 30m
2 stops
United Airlines Logo
12:10 pm - 11:34 pm
OPO
-
GSP
40h 24m
2 stops
$965United Airlines
Mon, Jul 6 - Mon, Jul 20
United Airlines Logo
7:49 pm - 6:15 am
GSP
-
OPO
29h 26m
1 stop
United Airlines Logo
12:10 pm - 11:34 pm
OPO
-
GSP
40h 24m
2 stops
$968United Airlines
Mon, Jul 6 - Mon, Jul 20
Lufthansa Logo
6:38 pm - 10:45 pm
GSP
-
OPO
23h 07m
2 stops
Lufthansa Logo
6:20 am - 5:04 pm
OPO
-
GSP
39h 44m
2 stops
$999Lufthansa
Sat, Aug 15 - Tue, Aug 18
United Airlines Logo
7:49 pm - 6:15 am
GSP
-
OPO
29h 26m
1 stop
United Airlines Logo
12:10 pm - 11:34 pm
OPO
-
GSP
40h 24m
2 stops
$1,007United Airlines
Mon, Jul 6 - Mon, Jul 20

United Airlines flights from Greenville to Porto

Our best United Airlines deals on Greenville to Porto flight tickets
United Airlines
Jul 6
GSP7:49 pmGreenville
29h 26m
1 stop
OPO6:15 amPorto
Jul 21
OPO12:15 pmPorto
27h 22m
2 stops
GSP10:37 amGreenville
$933
United Airlines
Jul 6
GSP6:30 amGreenville
19h 30m
2 stops
OPO7:00 amPorto
Jul 21
OPO12:35 pmPorto
15h 59m
1 stop
GSP11:34 pmGreenville
$950
United Airlines
Jul 6
GSP7:49 pmGreenville
29h 26m
1 stop
OPO6:15 amPorto
Jul 21
OPO9:00 amPorto
19h 34m
1 stop
GSP11:34 pmGreenville
$953

Lufthansa flights from Greenville to Porto

Our best Lufthansa deals on Greenville to Porto flight tickets
Lufthansa
Aug 15
GSP6:38 pmGreenville
23h 07m
2 stops
OPO10:45 pmPorto
Aug 18
OPO6:20 amPorto
39h 44m
2 stops
GSP5:04 pmGreenville
$999
Lufthansa
Jul 6
GSP7:49 pmGreenville
29h 26m
1 stop
OPO6:15 amPorto
Jul 21
OPO12:35 pmPorto
15h 59m
1 stop
GSP11:34 pmGreenville
$1,044
Lufthansa
Jul 6
GSP6:30 amGreenville
22h 15m
1 stop
OPO9:45 amPorto
Jul 21
OPO12:35 pmPorto
15h 59m
1 stop
GSP11:34 pmGreenville
$1,130

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 May 17, 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

Mon 7/6

6:30 am-7:00 am

2 stops19h 30m

Porto

Tue 7/21

12:15 pm-10:37 am

2 stops27h 22m

$930

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

7:49 pm-6:15 am

1 stop29h 26m

Porto

Tue 7/21

12:15 pm-10:37 am

2 stops27h 22m

$933

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

7:49 pm-7:00 am

2 stops54h 11m

Porto

Tue 7/21

12:15 pm-11:34 pm

2 stops40h 19m

$936
Quickest round-trip

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

6:30 am-7:00 am

2 stops19h 30m

Porto

Tue 7/21

12:35 pm-11:34 pm

1 stop15h 59m

$950

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

7:49 pm-6:15 am

1 stop29h 26m

Porto

Tue 7/21

9:00 am-11:34 pm

1 stop19h 34m

$953

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

7:49 pm-7:00 am

2 stops54h 11m

Porto

Tue 7/21

9:00 am-11:34 pm

1 stop19h 34m

$956

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

6:30 am-7:00 am

2 stops19h 30m

Porto

Mon 7/20

12:10 pm-11:34 pm

2 stops40h 24m

$965

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

7:49 pm-6:15 am

1 stop29h 26m

Porto

Mon 7/20

12:10 pm-11:34 pm

2 stops40h 24m

$968

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sat 8/15

6:38 pm-10:45 pm

2 stops23h 07m

Porto

Tue 8/18

6:20 am-5:04 pm

2 stops39h 44m

$999

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 7/6

7:49 pm-6:15 am

1 stop29h 26m

Porto

Mon 7/20

12:10 pm-11:34 pm

2 stops40h 24m

$1,007

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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

What is the cheapest airline that flies from Greenville to Porto?

KLM, Lufthansa, and Brussels Airlines are the most popular carriers operating from Greenville to Porto

What airlines fly to Porto?

United Airlines, Iberia and American Airlines are the top three most popular airlines that fly to Porto from Greenville according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 5 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

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

18h 45m

Direct flights

None
The fastest flight from Greenville to Porto takes 18h 45m
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 18h 45m 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
Lamego
Esposende
Chaves
Pinhao
Espinho
Guimarães
Arcos de Valdevez
Viseu
Ponte de Lima
Curia
Penafiel
Mesao Frio
Mira
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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