$105 Cheap Flights from Athens (ATH) to Porto (OPO)

View $105 flight on Sat, Oct 11, 2025Opens in a new window

Popular airlines from Athens Intl. Airport (ATH) to Porto Airport (OPO)

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Find available prices by choosing your travel dates.

Cheap Flights from Athens to Porto (ATH-OPO)

Prices were available within the past 7 days and start at $105 for one-way flights and $189 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aegean
Tue, Oct 21 - Thu, Oct 23
ATH
Athens
OPO
Porto
$189 Roundtrip, found 4 days ago
$189
Roundtrip
found 4 days ago
Select Aegean flight, departing Tue, Oct 21 from Athens to Porto, returning Thu, Oct 23, priced at $189 found 4 days ago
Aegean
Tue, Oct 21 - Thu, Oct 23
ATH
Athens
OPO
Porto
$232 Roundtrip, found 4 days ago
$232
Roundtrip
found 4 days ago
Select Aegean flight, departing Tue, Oct 21 from Athens to Porto, returning Thu, Oct 23, priced at $232 found 4 days ago
Swiss International Air Lines
Tue, Jun 10 - Sat, Jun 14
ATH
Athens
OPO
Porto
$248 Roundtrip, found 3 days ago
$248
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Tue, Jun 10 from Athens to Porto, returning Sat, Jun 14, priced at $248 found 3 days ago
Austrian Airlines
Wed, Jun 25 - Sun, Jun 29
ATH
Athens
OPO
Porto
$250 Roundtrip, found 2 days ago
$250
Roundtrip
found 2 days ago
Select Austrian Airlines flight, departing Wed, Jun 25 from Athens to Porto, returning Sun, Jun 29, priced at $250 found 2 days ago
Air Serbia
Thu, Aug 21 - Thu, Sep 4
ATH
Athens
OPO
Porto
$252 Roundtrip, found 3 days ago
$252
Roundtrip
found 3 days ago
Select Air Serbia flight, departing Thu, Aug 21 from Athens to Porto, returning Thu, Sep 4, priced at $252 found 3 days ago
Lufthansa
Tue, Jun 17 - Mon, Jun 30
ATH
Athens
OPO
Porto
$255 Roundtrip, found 10 hours ago
$255
Roundtrip
found 10 hours ago
Select Lufthansa flight, departing Tue, Jun 17 from Athens to Porto, returning Mon, Jun 30, priced at $255 found 10 hours ago
Austrian Airlines
Sat, May 10 - Tue, May 13
ATH
Athens
OPO
Porto
$266 Roundtrip, found 1 day ago
$266
Roundtrip
found 1 day ago
Select Austrian Airlines flight, departing Sat, May 10 from Athens to Porto, returning Tue, May 13, priced at $266 found 1 day ago
Lufthansa
Wed, Jun 25 - Sun, Jun 29
ATH
Athens
OPO
Porto
$267 Roundtrip, found 2 days ago
$267
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Wed, Jun 25 from Athens to Porto, returning Sun, Jun 29, priced at $267 found 2 days ago
Air Europa
Tue, Jun 17 - Mon, Jun 30
ATH
Athens
OPO
Porto
$339 Roundtrip, found 10 hours ago
$339
Roundtrip
found 10 hours ago
Select Air Europa flight, departing Tue, Jun 17 from Athens to Porto, returning Mon, Jun 30, priced at $339 found 10 hours ago
Volotea
Tue, Oct 21 - Thu, Oct 23
ATH
Athens
OPO
Porto
$356 Roundtrip, found 4 days ago
$356
Roundtrip
found 4 days ago
Select Volotea flight, departing Tue, Oct 21 from Athens to Porto, returning Thu, Oct 23, priced at $356 found 4 days ago
Flights from Athens (ATH) to Porto (OPO)
Origin airport
Eleftherios Venizelos
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
Aegean, Air Europa, Air France, Air Serbia, Austrian Airlines, Brussels Airlines, Iberia, KLM, Lufthansa, Norwegian Air Shuttle, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, Volotea, Vueling Airlines
Roundtrip price
$189
Distance
1741 mi

Athens to Porto Flights

The cheapest times to fly from Athens to Porto

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Athens to Porto are during the month of October. You can find some of the cheapest flights from Athens to Porto with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Athens to Porto

Sunday is one of the best days to book for cheap flights from Athens to Porto: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Athens to Porto

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Athens to Porto in 2025. You can also book with separate airlines for your outbound and return journeys, from $105 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Athens to Porto flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Athens to Porto airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Eleftherios Venizelos Airport (ATH) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Snag cheap return flights starting at $403 from Eleftherios Venizelos Airport (ATH) to Dr. Francisco de Sa Carneiro Airport (OPO). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Aegean flight leaving ATH on May 15 2025 and touching down at OPO. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from ATH to OPO?
The cheapest flights from ATH to OPO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ATH to OPO?
Journey from ATH to OPO with Aegean. This airline currently has the lowest one-way fare on this route, starting from $161. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from ATH on May 20 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Eleftherios Venizelos Airport (ATH) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Nonstop flights from Eleftherios Venizelos Airport (ATH) to Dr. Francisco de Sa Carneiro Airport (OPO) aren’t available daily, so you’ll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and pick either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from ATH to OPO?
You’ll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Eleftherios Venizelos Airport (ATH) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Book a flight from Eleftherios Venizelos Airport (ATH) to Dr. Francisco de Sa Carneiro Airport (OPO) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Eleftherios Venizelos Airport (ATH) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Waiting until just before your trip to book your flight from ATH to OPO generally means paying more. Although you may find some last-minute offers, they aren’t always guaranteed. Keep your travel schedule open to maximize your chances of getting a bargain.
Is it cheaper to book an ATH to OPO flight and hotel package?
Securing an ATH to OPO flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our wide range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Eleftherios Venizelos Airport (ATH) to Dr. Francisco de Sa Carneiro Airport (OPO)?
In most cases, you can modify or cancel your ATH to OPO flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Check your itinerary for the airline’s fees and guidelines on flight changes, or if you’d like more information, head to our Customer Service portal.

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*Available to One Key members.