HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$1,037+ 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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — OPO
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Greenville to Porto with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,037
(United)

Popular in

August

Cheapest in

November

Average price

$890
Provider with most accurate pricing for Greenville-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Greenville-Porto flights.
Search Deals
From Greenville to Porto
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($266 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 February 20, 2025.

This United deal was found by Cheapflights users on 2/20. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/126:30 amGSP - OPO
2 stops47h 45mUnited Airlines
Sat 4/196:00 amOPO - GSP
2 stops21h 37mUnited Airlines
Deal found 2/20$1,037
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1811:34 amGSP - OPO
2 stops19h 06mAmerican Airlines
Thu 5/298:15 amOPO - GSP
2 stops18h 41mAmerican Airlines
Deal found 2/19$1,278
This Ovago deal was found by Cheapflights users on 2/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/193:42 pmGSP - OPO
2 stops38h 18mScandinavian Airlines
Wed 5/2812:15 pmOPO - GSP
2 stops38h 13mScandinavian Airlines
Deal found 2/19$1,282
This Air France deal was found by Cheapflights users on 2/19. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/187:55 pmGSP - OPO
2 stops15h 50mMultiple Airlines
Fri 5/309:20 amOPO - GSP
2 stops19h 23mMultiple Airlines
Deal found 2/19$1,299
This Delta deal was found by Cheapflights users on 2/19. 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.
Mon 5/193:42 pmGSP - OPO
2 stops21h 13mDelta
Fri 5/306:40 amOPO - GSP
2 stops20h 21mDelta
Deal found 2/19$1,300
This KAYAK deal was found by Cheapflights users on 2/19. 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.
Tue 5/202:50 pmGSP - OPO
2 stops15h 25mLufthansa
Thu 5/296:00 amOPO - GSP
2 stops17h 57mLufthansa
Deal found 2/19$1,593
This KLM deal was found by Cheapflights users on 2/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/176:40 pmGSP - OPO
2 stops15h 50mKLM
Thu 5/296:30 amOPO - GSP
2 stops16h 13mKLM
Deal found 2/19$1,726
This Air Canada deal was found by Cheapflights users on 2/19. 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.
Sat 7/1210:24 amGSP - OPO
3 stops18h 06mAir Canada
Sun 7/2012:15 pmOPO - GSP
3 stops16h 30mAir Canada
Deal found 2/19$2,091

Find flights from Greenville to Porto within your budget

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 February 20, 2025.

Fly from

Greenville

Fly to

Porto

Route

Depart

Return

Price

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sat 4/12

6:30 am-11:15 am

2 stops47h 45m

Porto

Sat 4/19

6:00 am-10:37 pm

2 stops21h 37m

$1,037

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 5/18

11:34 am-11:40 am

2 stops19h 06m

Porto

Thu 5/29

8:15 am-9:56 pm

2 stops18h 41m

$1,278

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 5/19

3:42 pm-11:00 am

2 stops38h 18m

Porto

Wed 5/28

12:15 pm-9:28 pm

2 stops38h 13m

$1,282

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sun 5/18

7:55 pm-4:45 pm

2 stops15h 50m

Porto

Fri 5/30

9:20 am-11:43 pm

2 stops19h 23m

$1,299

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Mon 5/19

3:42 pm-5:55 pm

2 stops21h 13m

Porto

Fri 5/30

6:40 am-10:01 pm

2 stops20h 21m

$1,300

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Tue 5/20

2:50 pm-11:15 am

2 stops15h 25m

Porto

Thu 5/29

6:00 am-6:57 pm

2 stops17h 57m

$1,593

GreenvillePorto

GSP - OPO

GSPOPO

Greenville

Sat 5/17

6:40 pm-3:30 pm

2 stops15h 50m

Porto

Thu 5/29

6:30 am-5:43 pm

2 stops16h 13m

$1,726

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

  • Most accurate provider: When it comes to deals on Greenville-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Greenville-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Greenville-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Greenville-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Greenville-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Travel insights for flights from Greenville to Porto

Get recent, data-driven insights about flights from Greenville to Porto including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Greenville to Porto (average of $523). Flying from Greenville to Porto in June is currently the most expensive (average of $1,092). 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 February 20, 2025.

It’s optimal to fly from Greenville to Porto in the morning. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight at noon.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 February 20, 2025.
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Scandinavian Airlines
7.3
Good
1,325 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    Our cheapest airline available from Greenville to Porto is United Airlines. Our recent data shows that you can find tickets from as low as $1,037 on this airline. Additional options worth looking into are American Airlines and Scandinavian Airlines, starting at $1,278 and $1,282 round-trip. United Airlines is priced at 3% lower than the current average price of a flight leaving 3 months from now.

  • 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, January is the cheapest month in which you can book a flight from Greenville to Porto (average of $523). Flying from Greenville to Porto in June is currently the most expensive (average of $1,092). 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 Greenville?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.