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$541+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — OPO
nov 15 — nov 221
sáb 11/15
sáb 11/22
1 adult, Economy
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Find flight deals from Greenville to Porto

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 outubro 16, 2025.

This KAYAK deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 12/215:36 pmGSP - OPO
2 stops47h 49mLufthansa
dom 12/286:15 amOPO - GSP
2 stops18h 01mLufthansa
Deal found 10/16$1,517
This Delta deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 12/217:59 pmGSP - OPO
2 stops14h 26mDelta
dom 12/285:00 amOPO - GSP
2 stops21h 46mDelta
Deal found 10/15$1,551
This Air Canada deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 12/211:05 pmGSP - OPO
3 stops18h 55mAir Canada
dom 12/286:55 amOPO - GSP
3 stops22h 01mAir Canada
Deal found 10/15$2,255

Cheap flight deals from Greenville to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Greenville (GSP) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated outubro 16, 2025.

Round-trip from

$541
(KLM)
From Greenville to Porto
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated outubro 16, 2025.
Use the filters below to find and compare flights from Greenville to Porto that are best for you.

Fly from

Greenville

Fly to

Porto

Route

Depart

Return

Price

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

seg 1/12

12:00 pm-10:30 am

2 stops17h 30m

Porto

qui 1/22

6:35 am-10:05 pm

2 stops20h 30m

$541

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

seg 1/12

11:49 am-11:40 am

2 stops18h 51m

Porto

qui 1/22

6:00 am-8:47 pm

2 stops19h 47m

$548

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

sex 3/27

10:00 am-9:30 am

2 stops19h 30m

Porto

ter 3/31

6:00 am-9:11 pm

2 stops20h 11m

$865

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

dom 12/21

5:36 pm-10:25 pm

2 stops47h 49m

Porto

dom 12/28

6:15 am-7:16 pm

2 stops18h 01m

$1,517

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

dom 12/21

7:59 pm-3:25 pm

2 stops14h 26m

Porto

dom 12/28

5:00 am-9:46 pm

2 stops21h 46m

$1,551

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

dom 12/21

1:05 pm-1:00 pm

3 stops18h 55m

Porto

dom 12/28

6:55 am-11:56 pm

3 stops22h 01m

$2,255

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

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.
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.

Cheapflights Insights

Everything you need to know about your flight from Greenville to Porto

What is the cheapest month to book a flight from Greenville to Porto?

Currently, November is the cheapest month in which you can book a flight from Greenville to Porto (average of $560). Flying from Greenville to Porto in June is currently the most expensive (average of $1,082). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Greenville to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated outubro 16, 2025.

It’s optimal to fly from Greenville to Porto at noon. By choosing this option you can save up to 44% on the cost of your flight, compared to a flight in the afternoon.

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated outubro 16, 2025.
Read reviews from past customers who have flown Delta and United Airlines from Greenville to Porto. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,984 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
8.0
Very good
7,984 reviews
Delta
8.0
Very good
7,984 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,982 reviews
Delta
8.0
Very good
7,984 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Greenville to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Greenville to Porto?

    There are many flights that can get you from Greenville to Porto in 17h 30m. Fly via KLM, Lufthansa, or United Airlines to get the fastest option. The distance between Greenville and Porto is about 3901 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Greenville to Porto round-trip?

    Our cheapest airline available from Greenville to Porto is Delta. Our recent data shows that you can find tickets from as low as $577 on this airline. An additional option worth looking into is United Airlines, starting at $619.

  • 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.

  • What is the cheapest month to book a flight from Greenville to Porto?

    Currently, November is the cheapest month in which you can book a flight from Greenville to Porto (average of $560). Flying from Greenville to Porto in June is currently the most expensive (average of $1,082). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

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Top 2 airlines flying from Greenville to Porto

Discover the top 2 airlines that operate flights from Greenville to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated outubro 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$577Average$994FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$619Average$1,017FlexibilityNo cancel feeOn-time69%

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