IST - OPO

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1 adult, Economy, 0 bags

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Everything you should know

Nonstop flights
Every day
You can fly direct with Turkish Airlines. Average duration is 4h 53m
Direct flights
Direct flights
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Direct flights
Direct flights
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Avoid delays
Most punctual • 86% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $394 (round-trip)
Shortest trip • 7h 30m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Istanbul to Porto (IST-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Istanbul to Porto 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 Istanbul to Porto

Multiple Airlines Logo
IST
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OPO
1927 mimulti-stop
Multiple Airlines Logo
OPO
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IST
1927 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Istanbul to Porto flights

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

What’s the cheapest day of the week to fly from Istanbul to Porto?

The average price of all round-trip flights from Istanbul Airport to Porto clicked on KAYAK for each day over the last 12 months.

When flying from Istanbul to Porto, you should consider leaving on a Friday and avoid Mondays if you are looking for the best rates. For your return to Istanbul, you’ll find the best rates on Sundays and the most expensive ones on Mondays.

What is the cheapest month to fly from Istanbul Airport to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Istanbul Airport to Porto, 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 Istanbul Airport to Porto is November, where tickets cost $440 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $839 and $775 respectively.

Can I save money by flying with a layover from Istanbul Airport to Porto?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $559, prices are generally cheapest when you fly direct.

Expert advice

Expert advice for your flight from Istanbul to Porto

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Jenna Scatena

Jenna Scatena

Expert on IST

Journalist and Travel Writer, Jenna Scatena is an award-winning travel writer with a love for sharing stories and exploring new places, especially by Vespa. Though she's from San Francisco, she has spent a significant chunk of her vacation days over the last decade eating her way through Texas and sleeping in hotels around the world—especially in California, the Middle East, and Europe.

Duncan Madden

Duncan Madden

Expert on OPO

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Good to know

Low season

April
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 20% lower on average.

When to book flights from Istanbul to Porto

Are your dates flexible? Find out the best times to travel from Istanbul to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Istanbul to Porto flights

  • Do I need a passport to fly between Istanbul and Porto?

    A passport is required to fly from Istanbul to Porto.

  • Which aircraft models fly most regularly from Istanbul to Porto?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Istanbul to Porto flight route.

  • Which airline alliances offer flights from Istanbul to Porto?

    Star Alliance is the only airline alliance operating flights between Istanbul and Porto.

  • On which days can I fly direct from Istanbul to Porto?

    There are nonstop flights from Istanbul to Porto on a daily basis.

  • How does KAYAK find such low prices on flights from Istanbul to Porto?

    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 Istanbul to Porto.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Istanbul 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 Istanbul to Porto?

    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 to Porto with an airline and back to Istanbul with another airline. Booking your flights between Istanbul and OPO can sometimes prove cheaper using this method.

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

    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 to Porto from Istanbul up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Istanbul to Porto?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Istanbul to Porto.
Find which airlines fly direct from Istanbul Airport to Porto Airport, which days they fly and book direct flights.

Direct departures

Istanbul to Porto

Monday

Turkish Airlines

Turkish Airlines

Tuesday

Turkish Airlines

Turkish Airlines

Wednesday

Turkish Airlines

Turkish Airlines

Thursday

Turkish Airlines

Turkish Airlines

Friday

Turkish Airlines

Turkish Airlines

Saturday

Turkish Airlines

Turkish Airlines

Sunday

Turkish Airlines

Turkish Airlines

See more direct flights

Direct returns

Porto to Istanbul

Monday

Turkish Airlines

Turkish Airlines

Tuesday

Turkish Airlines

Turkish Airlines

Wednesday

Turkish Airlines

Turkish Airlines

Thursday

Turkish Airlines

Turkish Airlines

Friday

Turkish Airlines

Turkish Airlines

Saturday

Turkish Airlines

Turkish Airlines

Sunday

Turkish Airlines

Turkish Airlines

See more direct flights

Reviews of the top airline flying from Istanbul to Porto

 
See real verified KAYAK customer reviews for airlines flying from Istanbul to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Istanbul to Porto? 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
Turkish AirlinesOverall score based on 4457 reviews
7.3Comfort
7.5Entertainment
7.3Boarding
7.8Crew
7.5Food
Airline reviews

We liked the comfort and seats. The crew was not very friendly nor did they check on us to see if we needed anything. Had to ask for water several times

8.0 ExcellentAnonymous, Jul 2026
IST - LAX
Read more Turkish Airlines reviews

We liked the comfort and seats. The crew was not very friendly nor did they check on us to see if we needed anything. Had to ask for water several times

The service is awesome. The food is the best of all the airlines we have flown before. Totally enjoyable flight, which is quite unusual.

Broken seats, smell in cabin, seats that did not recline, trays thats did not stay horizontal

See comments in previous section Houston to Chicago Chicago to Istanbul

The rules regarding business class lounge hotel/room access were very confusing. Between flights we had an 11 hour layover in Istanbul, but were denied a room to rest as our layover was too long?? Keep in mind that we arrived there at 3:30am after a long flight. Even multiple Turkish airlines employees were inconsistent with the rules. We ended up paying a high price at the Yotel in the airport in order to get some rest. Good thing I did, as a medical emergency was declared on the flight from Istanbul to Atlanta and I was apparently the only physician on board. Luckily I was able to stabilize the passenger and the flight wasn't diverted. The crew called an overhead announcement for a medical doctor, but insisted that I show them a copy of my medical license which I did. Very strange in my 35 years as a physician and responding multiple times to inflight medical emergencies over the years. I was very glad the passengers issue was resolved, but an acknowledgement of at least a thank you from the crew would have been appreciated.

I wasn't able to bring my little dog with me, because of the feedback team's extremely slow response. How are they even allowed to operate with this paste??

The sleeper seats, the staff, and the food was truly delicious. I loved the mocktail options.

They gave us some Tiramisu that had no business being as delicious as it was! They were continuously attentive and provided a great environment to welcome us on our trip.

Great service. Seat was a bit small but it was fine. Food was great

This flight was in the air when the national power outage happened on 28 April 2025 in Spain and Portugal. As a result Lisbon airport was closed and the flight was diverted to Porto. There were no phones, internet or ATMs working and the Turkish Airlines ground crew in Porto were trying to find alternative transport to Lisbon (by bus). This did not materialise until late in the evening. The Turkish Airlines ground crew suggested that passengers may find their own way of getting to Lisbon. That in itself is a failure of Turkish Airlines, but understandable as there were no means of communication. The Turkish Airlines ground crew also said that any expenses insured for travel to Lisbon will be refunded by the Airline through their website. Unfortunately, I could find no way to travel back to Lisbon other than to hitch hike with an Uber driver. Because no systems were available and no credit card payment possible I paid the driver 140 Euros in cash with no receipt as systems were down. I arrived at my Lisbon hotel at 23:30 (flight was scheduled to land at 12:30). Upon contacting Turkish Airlines for compensation they are not willing to do anything as I do not have an invoice for my expenses. They do not even consider the 10 hours of delay and inactivity on their part as a reason to provide any sort of curtesy towards me. I find their behaviour appalling.

Everything you need to know for your flight from Istanbul to Porto

Information on your arrival and departure airports