$408 Find Cheap Flights from Greenville to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Greenville to Portugal departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Greenville to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$501
Porto
Porto2 stops$492
Lisbon
Lisbon1 stop$501
Porto
Porto2 stops$492

Book Cheap Greenville to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Greenville to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Greenville to Portugal

Mon, Mar 2 - Fri, Mar 13
United Airlines Logo
6:30 am - 9:30 am
GSP
-
OPO
22h 00m
2 stops
United Airlines Logo
6:00 am - 2:17 pm
OPO
-
GSP
36h 17m
2 stops
$492United Airlines
Mon, Mar 2 - Mon, Mar 16
Delta Logo
7:20 am - 10:30 am
GSP
-
OPO
22h 10m
2 stops
Delta Logo
11:15 am - 7:37 pm
OPO
-
GSP
36h 22m
2 stops
$494Delta
Sun, Mar 1 - Mon, Mar 16
Delta Logo
7:40 pm - 10:30 am
GSP
-
OPO
57h 50m
2 stops
Delta Logo
11:15 am - 10:59 am
OPO
-
GSP
27h 44m
2 stops
$496Delta
Wed, Mar 4 - Fri, Mar 13
Lufthansa Logo
12:05 pm - 1:15 pm
GSP
-
OPO
20h 10m
2 stops
Lufthansa Logo
6:30 am - 8:51 pm
OPO
-
GSP
42h 21m
2 stops
$497Lufthansa
Tue, Mar 3 - Mon, Mar 16
Delta Logo
11:36 am - 10:30 am
GSP
-
OPO
17h 54m
2 stops
Delta Logo
5:00 am - 10:59 am
OPO
-
GSP
33h 59m
2 stops
$500Delta
Tue, Apr 14 - Tue, Apr 21
Lufthansa Logo
7:42 pm - 10:45 pm
GSP
-
LIS
22h 03m
2 stops
Lufthansa Logo
5:05 am - 8:47 pm
LIS
-
GSP
20h 42m
2 stops
$503Lufthansa
Tue, Apr 14 - Tue, Apr 21
British Airways Logo
7:10 am - 11:00 pm
GSP
-
LIS
34h 50m
2 stops
British Airways Logo
7:10 am - 10:35 am
LIS
-
GSP
32h 25m
2 stops
$515British Airways
Mon, Mar 2 - Mon, Mar 16
Multiple Airlines Logo
6:00 am - 12:05 pm
GSP
-
LIS
25h 05m
2 stops
Multiple Airlines Logo
7:05 am - 10:22 pm
LIS
-
GSP
19h 17m
2 stops
$528Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
British Airways Logo
6:28 pm - 9:05 am
GSP
-
LIS
9h 37m
1 stop
British Airways Logo
11:05 am - 10:35 am
LIS
-
GSP
28h 30m
1 stop
$530British Airways
Tue, Apr 14 - Sun, Apr 19
American Airlines Logo
8:13 am - 7:40 am
GSP
-
OPO
18h 27m
2 stops
American Airlines Logo
8:20 am - 11:58 pm
OPO
-
GSP
20h 38m
2 stops
$561American Airlines
Booking Insights

KAYAK's insights & trends for Greenville to Portugal flights

Get data-powered insights and trends into flights from Greenville to Portugal to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Greenville to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Greenville to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Greenville to Portugal is February, when tickets cost $587 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,318 and $1,258 respectively.

Good to know

Low seasonFebruary
Cheapest flight$408
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Greenville to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Greenville to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Greenville to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Greenville to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Greenville to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Greenville to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Greenville to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Greenville to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Greenville to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Greenville to Portugal

 
Need help choosing which airline to fly with from Greenville to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9210 reviews
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
7.3Comfort
Airline reviews

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

8.0 ExcellentAnonymous, Jan 2026
ORD - TPA
Read more United Airlines reviews

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

The plane was experiencing problems with the HVAC system, it was very cold in the front of the plane and very hot in the back.

My flight to London from Philadelphia was cancelled due to weather.

The attendants were kind and helpful. A sugar-free drink would have been very welcome.

Pilot navigated severe weather/snow storm with skill. Described his intentions clearly

one crew said "he" didn't serve double alcohol drinks for travelers in exit rows. crew on prior flight did. Is this a AA rule, and the prior crew was being nice? Also, I think we deserve more than a 25% refund for losing first class seats when rescheduling a flight due to weather

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Getting the boarding passes between the BA and AA apps was very clunky.

The airline was not clear about a new departure time so we got to the airport early anyway. The flight left early which was great because of weather. The check in process was very easy and staff were friendly and helpful. The crew was great and our flight was very good.

Awful it always is unfortunately is the only way to fly direct to london

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

Plane was extremely delayed, but not all of it was BA fault (some was). Worst part was lack of room - this had as much space as an Allegiant flight. I thought transatlantic usually gave you an extra inch or two, but not this one. Entertainment system sporadically worked and didn’t have great options. Overhead bins are old and tiny, not as good as aunties new planes.

Boarding was poor. All groups called immediately one after the other resulting in a long queue in the jetty/jet bridge. Seats were very hard and and did not recline on a 4.5 hour flight. No food was available. Plane was cold. There was no entertainment.

The cramped seats are cruel and unusual punishment and may violate the Geneva code.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

Everything you need to know for your flight from Greenville to Portugal

Information on your arrival and departure airports