106 € Cheap Flights from Porto to Athens International

Compare Porto to Athens International flight deals

Find the cheapest month or even day of the year to fly to Athens International

Book the best Athens International fare with no extra fees

Flight deals from Porto to Athens International

Looking for a cheap last-minute deal or the best return flight from Porto Airport to Athens International Airport? If you want to travel next month, return fares start from 209 €. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Porto to Athens International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Porto to Athens International flights are currently cheapest in October.

Direct flights from Porto to Athens International

Porto to Athens International: Alternative routes

Compare routes from Porto to Athens below. You may find an airport to fly into that's cheaper, faster, or easier than Athens International.

Porto to Athens: Flight information

The things to know before you go.
Cheapest flight found106 €
Cheapest month to flySeptember
Average flight time3 hrs, 45 mins
Most popular airlineAegean Airlines
Average flights per week7

Finding cheap flights from Porto to Athens International: Frequently asked questions

The best price we found for a return flight from Porto to Athens International is 106 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 45 minutes is the average flight time from Porto to Athens International.
Aegean Airlines and Volotea fly direct from Porto to Athens International.
As of July 2026, there are 7 flights per week flying from Porto to Athens International.
The cheapest month to fly from Porto to Athens International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Porto Airport to Athens International Airport on Monday, 28 September 2026.
Yes – the average flight time is 3 hours and 45 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Athens International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Athens is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Wizz Air Malta and Aegean Airlines offer the cheapest flight tickets to Athens International.

Travelling from Porto Airport (OPO) to Athens International Airport (ATH): what you need to know

  • Jump on a direct flight from Porto Airport to Athens International Airport and you'll be travelling for an average of 3 hours 45 minutes.

  • Athens's timezone is UTC+2, which makes Athens two hours ahead of Porto.

  • To ensure you catch your OPO to ATH flight, leave plenty of time for things like check-in and baggage drop. Turning up two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Flying during a peak time like August? Public holidays and other high seasons can lead to longer lines and delays at check-in and security. Play it safe and get there up to four hours ahead of international flights and two hours before domestic departures.

  • Aegean Airlines offers direct flights from Porto Airport to Athens International Airport. Book with this popular carrier, then get ready to check out the sights in Athens — and maybe even more of Greece if you have time.

  • The airline that serves the most passengers on this route is Aegean Airlines.

  • The carrier with the top on-time arrival performance for OPO to ATH flights is Aegean Airlines.

  • If you'd like to break up your flight, just deselect 'Direct flights only' when searching for your ticket from Porto Airport to Athens International Airport. Here are the top stopovers between OPO and ATH:

    • Madrid Airport

    • Geneva Airport

    • Milan Bergamo Airport

Handy information about Porto Airport (OPO)

  • When it comes to the on-time performance of Porto Airport, data shows 75% of flights meet their scheduled arrival time.

  • Porto Airport is around 11 kilometres from central Porto. If you're catching a taxi, ride-sharing or driving from the centre, it'll take you 20 minutes or so to get there, depending on the traffic.

  • The trip on public transport usually takes 30 minutes.

  • Get your journey off to a leisurely start by staying near OPO. Whether you have an early flight from Porto Airport to Athens International Airport or want to avoid feeling rushed, these stays are perfect:

Arriving at Athens International Airport (ATH)

  • Consider booking a hotel close to ATH if you're taking a late Porto Airport to Athens International Airport flight. Check in to one of these accommodation options and avoid the hassle of a long transfer:

  • Get on the fast track to adventure by picking up a Athens International Airport rental car. Grab a set of wheels from Centauro, Green Motion or Surprice and explore beyond Athens's usual tourist stops.

  • To lock in the lowest price, reserve your vehicle from Athens International Airport around three weeks before your trip.

When to fly to Athens International Airport (ATH)

  • August is the busiest month for flights from Porto Airport to Athens International Airport. For a quieter experience, visit Athens in March.

  • Lock in your flight from Porto Airport to Athens International Airport for July if you want to go to Athens during its warmest month. You can expect temperatures of between 22ºC (72ºF) and 37ºC (99ºF).

  • Look for cheap tickets from OPO to ATH in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 4ºC (39ºF) and 14ºC (57ºF) on average.

Explore more of Greece

  • You've seen Athens, now it's time to explore other corners of Greece. Journey about 306 kilometres north to Thessaloniki to check off its top sights. From Church of Agia Sofia to Archaeological Museum of Thessaloniki and Alexander the Great Statue, you've got a jam-packed schedule ahead.

  • If you're interested in discovering another major destination in Greece, head for Larisa, about 209 kilometres north-west of Athens. Larissa Ancient Ruins, Municipal Art Gallery of Larissa and The Church Of St. George are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.