$584+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — OPO
Oct 25 — Nov 11
Round-trip
1 adult, Economy
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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
Cheapest
Best
Last-minute
Cheapest flights from Greenville to PortoExplore 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 September 25, 2026.
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 September 25, 2026.
This Delta deal was found by Cheapflights users on 9/23. 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.
Wed 11/47:20 am -
2 stops19h 55m
Wed 11/115:55 am -
2 stops17h 15m
Deal found 9/23![Delta logo]()
$584
This Air France deal was found by Cheapflights users on 9/20. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/511:45 am -
2 stops17h 50m
Thu 11/1210:15 am -
2 stops18h 38m
Deal found 9/20![Multiple Airlines logo]()
$626
This Delta deal was found by Cheapflights users on 9/23. 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.
Tue 12/296:34 pm -
2 stops22h 26m
Tue 1/125:00 am -
2 stops17h 41m
Deal found 9/23![Delta logo]()
$664
This Delta deal was found by Cheapflights users on 9/23. 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.
Sat 11/77:20 am -
2 stops22h 15m
Sat 11/1410:15 am -
2 stops16h 18m
Deal found 9/23![Delta logo]()
$688
This United Airlines deal was found by Cheapflights users on 9/21. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:58 am -
1 stop16h 32m
Wed 11/1112:35 pm -
2 stops25h 55m
Deal found 9/21![United Airlines logo]()
$706
This Delta deal was found by Cheapflights users on 9/24. 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.
Sun 11/87:00 am -
2 stops22h 35m
Sun 11/155:00 am -
2 stops23h 53m
Deal found 9/24![Delta logo]()
$762
This United Airlines deal was found by Cheapflights users on 9/23. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:00 pm -
1 stop12h 45m
Tue 10/2712:35 pm -
2 stops48h 55m
Deal found 9/23![United Airlines logo]()
$770
This Delta deal was found by Cheapflights users on 9/21. 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.
Tue 10/2010:08 am -
2 stops19h 22m
Tue 10/275:00 am -
2 stops19h 21m
Deal found 9/21![Delta logo]()
$772
This Ovago deal was found by Cheapflights users on 9/23. 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.
Tue 12/296:44 pm -
1 stop9h 46m
Tue 1/1212:55 pm -
2 stops34h 55m
Deal found 9/23![Multiple Airlines logo]()
$836
This United deal was found by Cheapflights users on 9/23. 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.
Mon 12/2810:20 am -
1 stop18h 10m
Mon 1/111:45 pm -
2 stops38h 34m
Deal found 9/23![Multiple Airlines logo]()
$844
Best flights from Greenville to PortoDiscover carefully curated flight deals from Greenville to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.
Discover carefully curated flight deals from Greenville to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.
This United Airlines deal was found by Cheapflights users on 9/23. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:40 am -
1 stop22h 50m
Wed 11/1112:35 pm -
2 stops25h 55m
Deal found 9/23![United Airlines logo]()
$711
This Delta deal was found by Cheapflights users on 9/24. 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.
Sun 11/87:00 am -
2 stops22h 35m
Sun 11/155:00 am -
2 stops23h 53m
Deal found 9/24![Delta logo]()
$762
This United deal was found by Cheapflights users on 9/23. 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.
Mon 12/2810:20 am -
1 stop18h 10m
Mon 1/111:45 pm -
2 stops38h 34m
Deal found 9/23![Multiple Airlines logo]()
$844
This Ovago deal was found by Cheapflights users on 9/24. 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.
Sun 11/87:43 pm -
2 stops14h 37m
Sun 11/1512:35 pm -
1 stop16h 12m
Deal found 9/24![Lufthansa logo]()
$932
This United Airlines deal was found by Cheapflights users on 9/20. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1810:29 am -
2 stops24h 01m
Fri 1/226:00 am -
3 stops46h 19m
Deal found 9/20![United Airlines logo]()
$768
This Delta deal was found by Cheapflights users on 9/21. 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.
Tue 10/2010:08 am -
2 stops19h 22m
Tue 10/275:00 am -
2 stops19h 21m
Deal found 9/21![Delta logo]()
$772
This United Airlines deal was found by Cheapflights users on 9/23. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:46 pm -
2 stops32h 14m
Tue 10/2712:35 pm -
2 stops48h 55m
Deal found 9/23![United Airlines logo]()
$773
This United Airlines deal was found by Cheapflights users on 9/24. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:04 pm -
2 stops14h 26m
Fri 12/116:00 am -
3 stops46h 40m
Deal found 9/24![United Airlines logo]()
$1,082
Last-minute flights from Greenville to PortoDiscover last-minute flight deals from Greenville to Porto. Data last updated September 25, 2026 and is based on user searches.
Discover last-minute flight deals from Greenville to Porto. Data last updated September 25, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/23. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:00 pm -
1 stop12h 45m
Tue 10/2712:35 pm -
2 stops48h 55m
Deal found 9/23![United Airlines logo]()
$770
This Delta deal was found by Cheapflights users on 9/21. 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.
Tue 10/2010:08 am -
2 stops19h 22m
Tue 10/275:00 am -
2 stops19h 21m
Deal found 9/21![Delta logo]()
$772
Find 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 September 25, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $584 (Delta) |
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 7,457,451 searches. Data last updated September 25, 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
Cheapest round-trip
GreenvillePorto
GSP Greenville - OPO Porto
GSPOPO
Greenville
Wed 11/4
5:40 am-9:30 am
1 stop22h 50m
Porto
Wed 11/11
12:35 pm-9:30 am
2 stops25h 55m
$711
GreenvillePorto
GSP Greenville - OPO Porto
GSPOPO
Greenville
Sun 11/8
7:00 am-10:35 am
2 stops22h 35m
Porto
Sun 11/15
5:00 am-11:53 pm
2 stops23h 53m
$762
GreenvillePorto
GSP Greenville - OPO Porto
GSPOPO
Greenville
Mon 1/18
10:29 am-3:30 pm
2 stops24h 01m
Porto
Fri 1/22
6:00 am-11:19 pm
3 stops46h 19m
$768
GreenvillePorto
GSP Greenville - OPO Porto
GSPOPO
Greenville
Tue 10/20
10:08 am-10:30 am
2 stops19h 22m
Porto
Tue 10/27
5:00 am-8:21 pm
2 stops19h 21m
$772
GreenvillePorto
GSP Greenville - OPO Porto
GSPOPO
Greenville
Tue 10/20
5:46 pm-7:00 am
2 stops32h 14m
Porto
Tue 10/27
12:35 pm-9:30 am
2 stops48h 55m
$773
GreenvillePorto
GSP Greenville - OPO Porto
GSPOPO
Greenville
Mon 12/28
10:20 am-9:30 am
1 stop18h 10m
Porto
Mon 1/11
1:45 pm-11:19 pm
2 stops38h 34m
$844
Quickest round-trip
GreenvillePorto
GSP Greenville - OPO Porto
GSPOPO
Greenville
Sun 11/8
7:43 pm-3:20 pm
2 stops14h 37m
Porto
Sun 11/15
12:35 pm-11:47 pm
1 stop16h 12m
$932
GreenvillePorto
GSP Greenville - OPO Porto
GSPOPO
Greenville
Mon 12/7
2:04 pm-9:30 am
2 stops14h 26m
Porto
Fri 12/11
6:00 am-11:40 pm
3 stops46h 40m
$1,082
Sorted by cheapest first
Compare providers for flights from Greenville to Porto
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Greenville to Porto in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Greenville-Porto flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Greenville-Porto flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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.
GSP-OPO
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.
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.
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro
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