Cheapflights Tip: The best prices from Porto to Istanbul are usually found in February or January, booked 58 days in advance, depart on a Wednesday or Monday and return on a Monday
Cheap flight deals from Porto to Istanbul
Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Istanbul (IST). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 4 November 2025.
Popular in
July
Cheapest in
February
Average price
£311
Good round-trip deal
£557 or less
Good one-way deal
£542 or less
Highest demand for flights based on searches. 9% potential increase in price (£27 potential increase over avg. return price).
Have a flexible travel schedule? Discover the best time to fly to Istanbul from Porto with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Porto to Istanbul Airport
Prices
Airlines
Delays
How far ahead should I book a flight from Porto to Istanbul Airport?
Use this chart to determine the optimal time to book a return flight from Porto to Istanbul. Price data was last updated on 31 October 2025.
To ensure you get the cheapest price possible for a flight from Porto to Istanbul Airport, you should look to book at least 58 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Porto to Istanbul Airport?
Currently, December is the cheapest month in which you can book a flight from Porto to Istanbul Airport (average of £139). Flying from Porto to Istanbul Airport in July is currently the most expensive (average of £296). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from OPO to IST?
Find hourly flight availability from Porto to Istanbul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 November 2025.
When flying from Porto to Istanbul Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Porto to Istanbul Airport
Explore weekly flight availability from Porto to Istanbul. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 4 November 2025.
The most flights from OPO to IST are scheduled on a Tuesday (7 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).
How often are flights from Porto to Istanbul delayed?
About 9% of weekly flights between Porto and Istanbul have experienced delays in the past year, with the average delay time being 140 minutes.
What is the most punctual flight time for Porto to Istanbul flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Porto to Istanbul flights?
Over the past year, Thai Airways have had the lowest number of delays on this route, with just 8% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from Porto to Istanbul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly from for flights from Porto to Istanbul?
Located just 6.8 mi from the city center, Porto is the airport most travelers will use when flying to Istanbul from Porto. Booking flights from Porto (OPO) to Istanbul should be relatively easy as there are 4 daily outbound flights to Istanbul from 0 different airlines.
What are the most reliable airlines from Porto to Istanbul Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Porto to Istanbul Airport on time: Turkish Airlines (83%), IndiGo (75%), TAP AIR PORTUGAL (74%).
Can I find deals for flights from Porto to Istanbul that include hotel bookings?
Yes. In addition to deals on Porto to Istanbul flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Porto to Istanbul?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Istanbul.
Can I find deals for business class flights from Porto to Istanbul?
Yes. Cheapflights offers flight deals from Porto to Istanbul by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Porto to Istanbul Airport?
Currently, December is the cheapest month in which you can book a flight from Porto to Istanbul Airport (average of £139). Flying from Porto to Istanbul Airport in July is currently the most expensive (average of £296). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Istanbul departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 4 November 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Porto to Istanbul?
When you search for this flight from Porto to Istanbul, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Porto to Istanbul?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Istanbul from Porto.
Can Cheapflights find flights from Porto to Istanbul with no change fees?
Yes! Cheapflights helps users easily find flights from Porto to Istanbul with no change fees.
Can Cheapflights notify me if prices for flights from Porto to Istanbul become cheaper?
Yes! Start tracking prices for Porto to Istanbul flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.
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