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Cheap flights from Greenville to Porto from $490

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

Enter your travel dates to find the best prices.
Lufthansa Logo
2:55 pm - 11:40 am
GSP
-
OPO
15h 45m2 stops
Lufthansa Logo
6:00 am - 11:48 pm
OPO
-
GSP
22h 48m2 stops
$490Lufthansa
Mon, Jan 12 - Thu, Jan 22
Delta Logo
5:40 am - 10:30 am
GSP
-
OPO
23h 50m2 stops
Delta Logo
5:00 am - 10:24 pm
OPO
-
GSP
22h 24m2 stops
$492Delta
Sat, Jan 24 - Sat, Jan 31
Lufthansa Logo
10:51 am - 11:40 am
GSP
-
OPO
19h 49m2 stops
Lufthansa Logo
6:00 am - 7:29 pm
OPO
-
GSP
18h 29m2 stops
$505Lufthansa
Fri, Jan 16 - Sat, Jan 31
United Airlines Logo
12:04 pm - 11:40 am
GSP
-
OPO
18h 36m2 stops
United Airlines Logo
6:00 am - 11:48 pm
OPO
-
GSP
22h 48m3 stops
$510United Airlines
Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
12:09 pm - 11:45 am
GSP
-
OPO
18h 36m2 stops
American Airlines Logo
8:20 am - 11:59 pm
OPO
-
GSP
20h 39m2 stops
$710American Airlines
Fri, Jan 16 - Sat, Jan 31
United Airlines Logo
4:55 pm - 9:45 am
GSP
-
OPO
35h 50m2 stops
United Airlines Logo
6:00 am - 4:54 pm
OPO
-
GSP
39h 54m2 stops
$810United Airlines
Tue, Apr 14 - Sun, Apr 19
American Airlines Logo
5:28 am - 7:40 am
GSP
-
OPO
21h 12m2 stops
American Airlines Logo
8:20 am - 9:28 pm
OPO
-
GSP
18h 08m2 stops
$909American Airlines
Tue, Apr 14 - Sun, Apr 19
United Airlines Logo
10:33 am - 9:45 am
GSP
-
OPO
18h 12m2 stops
United Airlines Logo
12:00 pm - 10:09 am
OPO
-
GSP
27h 09m2 stops
$929United Airlines
Tue, Mar 31 - Tue, Apr 7
Lufthansa Logo
12:06 pm - 9:45 am
GSP
-
OPO
16h 39m1 stop
Lufthansa Logo
4:35 pm - 10:44 pm
OPO
-
GSP
35h 09m2 stops
$945Lufthansa
Tue, Mar 31 - Tue, Apr 7
Lufthansa Logo
5:35 pm - 11:25 pm
GSP
-
OPO
24h 50m2 stops
Lufthansa Logo
12:35 pm - 10:44 pm
OPO
-
GSP
15h 09m1 stop
$1,084Lufthansa
Tue, Apr 14 - Sun, Apr 19

United Airlines flights from Greenville to Porto

Our best United Airlines deals on Greenville to Porto flight tickets
United Airlines
Jan 24
GSP12:04 pmGreenville
18h 36m
2 stops
OPO11:40 amPorto
Jan 31
OPO6:00 amPorto
22h 48m
3 stops
GSP11:48 pmGreenville
$510
Find similar
United Airlines
Apr 14
GSP4:55 pmGreenville
35h 50m
2 stops
OPO9:45 amPorto
Apr 19
OPO6:00 amPorto
39h 54m
2 stops
GSP4:54 pmGreenville
$810
Find similar
United Airlines
Mar 31
GSP10:33 amGreenville
18h 12m
2 stops
OPO9:45 amPorto
Apr 7
OPO12:00 pmPorto
27h 09m
2 stops
GSP10:09 amGreenville
$929
Find similar

American Airlines flights from Greenville to Porto

Our best American Airlines deals on Greenville to Porto flight tickets
American Airlines
Jan 16
GSP12:09 pmGreenville
18h 36m
2 stops
OPO11:45 amPorto
Jan 31
OPO8:20 amPorto
20h 39m
2 stops
GSP11:59 pmGreenville
$710
Find similar
American Airlines
Apr 14
GSP5:28 amGreenville
21h 12m
2 stops
OPO7:40 amPorto
Apr 19
OPO8:20 amPorto
18h 08m
2 stops
GSP9:28 pmGreenville
$909
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 December 11, 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

2:55 pm-11:40 am

2 stops15h 45m

Porto

Thu 1/22

6:00 am-11:48 pm

2 stops22h 48m

$490

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sat 1/24

5:40 am-10:30 am

2 stops23h 50m

Porto

Sat 1/31

5:00 am-10:24 pm

2 stops22h 24m

$492

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Fri 1/16

10:51 am-11:40 am

2 stops19h 49m

Porto

Sat 1/31

6:00 am-7:29 pm

2 stops18h 29m

$505

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sat 1/24

12:04 pm-11:40 am

2 stops18h 36m

Porto

Sat 1/31

6:00 am-11:48 pm

3 stops22h 48m

$510

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Fri 1/16

12:09 pm-11:45 am

2 stops18h 36m

Porto

Sat 1/31

8:20 am-11:59 pm

2 stops20h 39m

$710

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

4:55 pm-9:45 am

2 stops35h 50m

Porto

Sun 4/19

6:00 am-4:54 pm

2 stops39h 54m

$810

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

5:28 am-7:40 am

2 stops21h 12m

Porto

Sun 4/19

8:20 am-9:28 pm

2 stops18h 08m

$909

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 3/31

10:33 am-9:45 am

2 stops18h 12m

Porto

Tue 4/7

12:00 pm-10:09 am

2 stops27h 09m

$929

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 3/31

12:06 pm-9:45 am

1 stop16h 39m

Porto

Tue 4/7

4:35 pm-10:44 pm

2 stops35h 09m

$945

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 4/14

5:35 pm-11:25 pm

2 stops24h 50m

Porto

Sun 4/19

12:35 pm-10:44 pm

1 stop15h 09m

$1,084

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 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

Fastest flight time

15h 03m

Direct flights

None
The fastest flight from Greenville to Porto takes 15h 03m
There are no direct flights from Greenville to Porto. There are no popular flight routes from Greenville to Porto.
Search flight deals

  • How far is Greenville to Porto by plane?

    The straight-line distance from Greenville to Porto is 3915.7 mi. Typically, this will take 15h 03m 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
United AirlinesPriceFrom $619Free CancellationRating
7.4
9,095 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
Coimbra
Braga
Aveiro
Matosinhos
Guimarães
Esposende
Lamego
Chaves
Viseu
Espinho
Ponte de Lima
Arcos de Valdevez
Pinhao
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.

An easier way to manage your Porto trip

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