HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Istanbul

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

OPO — IST
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Porto to Istanbul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Porto to Istanbul are usually found in January or November, booked 52 days in advance, depart on a Sunday or Thursday and return on a Tuesday

Find 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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Kiwi.com
3 stars

Popular in

August

Cheapest in

January

Average price

$378

Good round-trip deal

$769 or less

Good one-way deal

$334 or less
Provider with most accurate pricing for Porto-Istanbul flight deals.
Search Deals
Provider most trusted by Cheapflights users for Porto-Istanbul flights.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Porto to Istanbul.
Search Deals
Price to beat on a one-way flight from Porto to Istanbul.
Search Deals

Compare providers for flights from Porto to Istanbul

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Porto to Istanbul in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Porto-Istanbul Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Istanbul Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-Istanbul Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto-Istanbul Airport flights, Cheapflights users trust Kiwi.com the most. Kiwi.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Porto-Istanbul Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 January 16, 2026.

To ensure you get the cheapest price possible for a flight from Porto to Istanbul Airport, you should look to book at least 52 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, February is the cheapest month in which you can book a flight from Porto to Istanbul Airport (average of $146). Flying from Porto to Istanbul Airport in June is currently the most expensive (average of $384). 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 January 21, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Porto to Istanbul Airport as you normally would.

The best insider tips for Porto to Istanbul Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Porto to Istanbul Airport trip
Our travel experts
Sharad Ranabhat

Sharad Ranabhat

Expert on IndiGo

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

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

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 January 21, 2026.
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
4,200 reviews

Crew

7.8

Food

7.4

Entertainment

7.4

Boarding

7.3

Comfort

7.3

Overall

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Jan 2026

NQZ - IST

First of all, my flight got delayed. When I had a registration in Astana, the girl who was working on a desk was too lazy to fill out my info and that’s why she gave me only 2 tickets instead of 3. While boarding I realized it and had to talk to another worker who was solving this problem. My seat was near emergency door, people in front were reclining their seats, but I couldn’t- that made me have a little space to sit, move, etc. That was really uncomfortable. So the flight itself also took longer and I didn’t have time to reach another gate for next flight, even tho flight attendant said plane will be in time. I had to go to Turkish Airlines main office, most of workers didn’t speak enough good English to explain properly where it is. It also took me like 1,5 hours to solve. I was not satisfied with the flight at all this time.
Turkish Airlines
7.3
Good
4,200 reviews
Turkish Airlines
7.3
Good
4,200 reviews

Crew

7.8

Food

7.4

Entertainment

7.4

Boarding

7.3

Comfort

7.3

Overall

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Jan 2026

NQZ - IST

First of all, my flight got delayed. When I had a registration in Astana, the girl who was working on a desk was too lazy to fill out my info and that’s why she gave me only 2 tickets instead of 3. While boarding I realized it and had to talk to another worker who was solving this problem. My seat was near emergency door, people in front were reclining their seats, but I couldn’t- that made me have a little space to sit, move, etc. That was really uncomfortable. So the flight itself also took longer and I didn’t have time to reach another gate for next flight, even tho flight attendant said plane will be in time. I had to go to Turkish Airlines main office, most of workers didn’t speak enough good English to explain properly where it is. It also took me like 1,5 hours to solve. I was not satisfied with the flight at all this time.

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 6 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 $368. Turkish Airlines is priced at 18% 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: TAP AIR PORTUGAL (76%), IndiGo (75%), Thai Airways (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 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, February is the cheapest month in which you can book a flight from Porto to Istanbul Airport (average of $146). Flying from Porto to Istanbul Airport in June is currently the most expensive (average of $384). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$368Average$450FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.