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Cheap flights from Porto (OPO) to Istanbul (IST)

OPO — IST
Sep 2 — Sep 91
Tue 9/2
Tue 9/9
1 adult, Economy
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Cheapflights Tip: The best prices from Porto to Istanbul are usually found in January or February, booked 58 days in advance, depart on a Wednesday or Sunday and return on a Wednesday

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 August 28, 2025.

Popular in

August

Cheapest in

January

Average price

$522

Good round-trip deal

$805 or less

Good one-way deal

$473 or less
Highest demand for flights based on searches. 12% potential increase in price ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Porto to Istanbul.
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Price to beat on a one-way flight from Porto to Istanbul.
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The best insider tips for Porto to Istanbul Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Porto to Istanbul Airport trip
Airlines
IndiGo

Opt for Super 6E for wider seats and priority boarding, ideal for longer flights.


Use online check-in to secure preferred seats and avoid airport rush, ensuring a smoother experience.

Read more about IndiGoby Sharad Ranabhat
Turkish Airlines

Enjoy 30 inches of legroom and USB charging in Economy for added comfort on international flights.


Business Class offers priority luggage delivery and access to 18 lounges, enhancing your travel experience.

Read more about Turkish Airlinesby Jessica Macdonald
Our travel experts
Sharad Ranabhat

Sharad Ranabhat

Expert on IndiGo

Sharad Ranabhat

Sharad Ranabhat

Sharad, a Nepal-based aviation journalist, is passionate about uncovering the latest in airline news and airport reviews. When he's not diving into the world of aviation, you’ll find him exploring new destinations and sharing stories that connect and inspire.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Turkish Airlines

Jessica Macdonald

Jessica Macdonald

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more

Best time to book a flight from Porto to Istanbul

Have a flexible travel schedule? Discover the best time to fly to Istanbul from Porto with our price prediction graph.
Estimated round-trip 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

How far ahead should I book a flight from Porto to Istanbul Airport?

Use this chart to determine the optimal time to book a round-trip flight from Porto to Istanbul. Price data was last updated on August 22, 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, November is the cheapest month in which you can book a flight from Porto to Istanbul Airport (average of $923). Flying from Porto to Istanbul Airport in June is currently the most expensive (average of $1,359). 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 August 28, 2025.

It’s optimal to fly from Porto to Istanbul Airport in the morning. By choosing this option you can save up to 19% on the cost of your flight, compared to a flight at noon.

Reviews of airlines servicing Istanbul

Get insights into the airlines that provide service to Istanbul. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Istanbul. Reviews last updated August 28, 2025.
See what other customers who have flown with Turkish Airlines from Porto to Istanbul Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.3
Good
3,955 reviews

Food

7.4

Overall

7.3

Boarding

7.3

Crew

7.7

Entertainment

7.4

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.
Turkish Airlines
7.3
Good
3,955 reviews
Turkish Airlines
7.3
Good
3,955 reviews

Food

7.4

Overall

7.3

Boarding

7.3

Crew

7.7

Entertainment

7.4

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.

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?

    Most people fly from Porto (OPO) if they book a flight from Porto to Istanbul. On average, Porto has 3 outbound flights to Istanbul per day from 1 airline. Porto is conveniently located just 6.8 mi from Porto’s city center.

  • What is the cheapest airline to fly from Porto to Istanbul Airport round-trip?

    Cheapflights users have booked flights from Porto to Istanbul Airport round-trip from $228. Turkish Airlines is priced at 48% lower than the current average price of a flight leaving 3 months from now.

  • 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: Thai Airways (61%), Turkish Airlines (60%), TAP AIR PORTUGAL (60%).

  • 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 vacation 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, November is the cheapest month in which you can book a flight from Porto to Istanbul Airport (average of $923). Flying from Porto to Istanbul Airport in June is currently the most expensive (average of $1,359). 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.

See more FAQs

Traveling to a place near Istanbul Airport?

Book flights to Istanbul Airport if you plan to visit one of these locations
Yalova

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Top airline flying from Porto to Istanbul

Discover the top airline that operate flights from Porto to Istanbul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$228Average$404FlexibilityNo cancel feeOn-time77%

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