Cheap Flights from Porto (OPO) to Istanbul (ISTA)

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Find the cheapest month or even day of the year to fly to Istanbul

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Flight deals from Porto to Istanbul

Looking for a cheap last-minute deal or the best return flight from Porto to Istanbul? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Porto to Istanbul

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

Direct flights from Porto to Istanbul

Alternative Porto to Istanbul routes

Looking for the cheapest, fastest or easiest route from Porto to Istanbul? You could fly into the following airports instead.

Porto to Istanbul: Flight information

The things to know before you go.
Cheapest flight found$246
Cheapest month to flySeptember
Average flight time4 hrs, 41 mins
Most popular airlineTAP Air Portugal
Average flights per week41

Finding cheap flights from Porto to Istanbul: Frequently asked questions

There are 2 airports in Istanbul: Istanbul Sabiha and Istanbul.
The best price we found for a return flight from Porto to Istanbul is $246. 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.
4 hours and 41 minutes is the average flight time from Porto to Istanbul.
TAP Air Portugal, IndiGo and Turkish Airlines fly direct from Porto to Istanbul.
As of August 2025, there are 41 flights per week flying from Porto to Istanbul.
The cheapest month to fly from Porto to Istanbul is usually September.
If you're flying from Porto Airport, the cheapest airport near Istanbul is Istanbul Sabiha – which is 30.3 km away from the centre of Istanbul. We've found flights into this airport from $246.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Porto Airport to Istanbul on Tuesday, 23 September 2025.
Yes – the average flight time is 4 hours and 41 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 Istanbul 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 Istanbul is around 40 days in advance, so don’t leave your flight to the last minute.
In August, the average temperature is usually around 25°C. August is typically the warmest month in Istanbul, when it usually averages around 27°C. You can expect the least rain in August. The coldest month is January, with temperatures averaging 4°C. The rainiest month is December.
Currently, easyJet and Turkish Airlines offer the cheapest flight tickets to Istanbul.

Travelling from Porto Airport (OPO) to Istanbul: what you need to know

  • Expect to be in the air for 5 hours 5 minutes. On average, that's the duration of a direct flight from Porto Airport to Istanbul.

  • Istanbul is three hours ahead of Porto, where Porto Airport is located. Istanbul runs on the UTC+3 timezone.

  • The most popular route is from Porto Airport (OPO) to Istanbul Ataturk Airport (IST). You can select from 14 weekly services between these two airports. If you want to head off as soon as possible, the earliest flight from OPO to IST is the 10:35 Turkish Airlines service. If you'd rather fly out later on, the last departure is at 17:10 with Turkish Airlines.

  • For hassle-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This ensures you have enough time to catch your OPO to Istanbul flight.

  • If you're flying during a bank holiday or another peak period, give yourself extra time. A good general rule is two hours before domestic flights and up to four hours before international departures. Security and check-in lines will be longer.

  • You can book a direct Porto Airport to Istanbul ticket. Start your trip at OPO and arrive at Istanbul Ataturk Airport (IST).

  • Take to the skies with Turkish Airlines. This well-known airline operates direct flights from Porto Airport to Istanbul.

  • A stopover is the ideal opportunity to take a break from travelling and possibly even explore a different city. When searching for flight tickets from OPO to Istanbul, deselect the 'Direct flights only' box to see where you can stop along the way. Here are some popular options to consider:

    • Adolfo Suarez Madrid-Barajas Airport (MAD)

    • Barcelona-El Prat Airport (BCN)

    • Zurich Airport (ZRH)

  • OPO is about 11 kilometres from central Porto. If you're driving, catching a cab or ride-sharing from the centre, it'll take 20 minutes or so to get there, depending on traffic. If you're taking public transport, expect the trip time to be around 50 minutes.

  • Want a leisurely start to your journey? Stay near OPO. Whether you have an early flight from Porto Airport to Istanbul or just don't want to be rushed, these hotels put convenience first:

  • Of all flights departing from Porto Airport, 74.49% arrive as scheduled at their destination.

How to find the cheapest flights from Porto Airport (OPO) to Istanbul

  • The best price we've seen for a one-way Porto Airport to Istanbul flight is $122. The cheapest price for a return flight is $246. Bear in mind fares can change due to availability at the time of booking.

  • To snag cheap flights from OPO to Istanbul, book your journey eight months before your departure.

  • December is the best month for picking up an awesome deal on Porto Airport to Istanbul tickets. If you need to travel at a different time of year, the 'Whole month' tool will give you the lowest prices for every month.

  • Stay on top of deals for cheap flights from OPO to Istanbul by creating a Price Alert. You'll receive an email or push notification on the app when a lower fare pops up.

  • Save money on your flight from Porto Airport to Istanbul with the help of our filters. Choose your ideal times, airlines and number of stops, then sort the results by 'Cheapest' to see the best deals.

Airports in Istanbul

Istanbul Ataturk Airport (IST)

  • Istanbul Ataturk Airport (IST) to the centre of Istanbul takes about 50 minutes to reach by car. The centre is roughly 48 kilometres away.

  • If you're travelling by public transport, expect a journey time of around 1 hour 45 minutes.

  • Book a hotel close to IST if you're coming in on a late flight from Porto Airport to Istanbul. Pick one of these options and make your arrival easier:

  • Grab an Istanbul Ataturk Airport rental car and discover Istanbul and beyond with your own set of wheels. Hit, Avec car rentals and Eren Rent a Car are top outlets you can book with here.

  • Booking your vehicle from Istanbul Ataturk Airport around two weeks in advance of your flight from OPO to Istanbul can help you lock in the lowest rate.

Sabiha Gokcen International Airport (SAW)

  • Sabiha Gokcen International Airport (SAW) is roughly 48 kilometres from the centre of Istanbul. After your flight from Porto Airport to Istanbul, it'll take you around 55 minutes to reach the heart of the city in a cab or ride-share.

  • If you're catching public transport, it'll take around 1 hour 30 minutes.

  • Following your OPO to Istanbul flight, unwind at a hotel near SAW. These are some great accommodation options that'll help you switch to relaxation mode:

  • Essence, Eren Rent a Car and 724 Rent make picking up a Sabiha Gokcen International Airport rental car quick and easy. These reliable suppliers are located in or around the terminal and will have you on your way in a heartbeat.

  • Avoid potential price surges. Booking your ride four weeks before your arrival at SAW will help you save.

Best time to go to Istanbul

  • Visit Istanbul in peak season if you prefer a lively atmosphere, but remember that prices are usually higher. Alternatively, book flights from Porto Airport to Istanbul in the low season when prices are cheaper and it's not as busy.

  • The warmest month in Istanbul is August, with temperatures ranging between 20ºC (68ºF) and 30ºC (86ºF). Lock in your Porto Airport to Istanbul flight ticket then if that's the weather you find most pleasant.

  • January has average temperatures of between 2ºC (36ºF) and 11ºC (52ºF). Search for a cheap ticket from OPO to Istanbul around that time if you like travelling in cooler conditions.

More about Istanbul

  • After booking your flight from Porto Airport to Istanbul, choose a hotel that puts you right where the action is. Make one of these options your base for exploring Istanbul:

  • There are so many things to explore in this city it can be hard to figure out where to start. The Basilica Cistern, Topkapi Palace and Galata Tower are top sights which should be on any well-planned Istanbul itinerary.

Explore more of Türkiye (Turkey)

  • You've seen Istanbul, now it's time to explore other corners of Türkiye (Turkey). Travel about 354 kilometres east to Ankara to check off its top sights. From Museum of Anatolian Civilizations to Kocatepe Mosque (Kocatepe Camii) and Genclik Park, there's plenty to keep you busy.

  • Izmir is another sought-after destination in Türkiye (Turkey) and is around 322 kilometres south-west of Istanbul. No trip is complete without a visit to Kordonboyu, Kadifekale Castle and Alsancak.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.