Cheap flights from Porto to Istanbul from $105

In general, January is the cheapest month to fly from Porto to Istanbul. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $410. If you aren’t able to travel to Istanbul during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $422.

The cheapest day to depart from Porto to Istanbul is on a Sunday when prices can be found for as low as $850. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Istanbul on Monday is $1,079.

Our most recent data shows that the best time of day to fly to Istanbul is in the morning. Flights from Porto to Istanbul during this time can be as low as $895. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,048 on average. Flights to Istanbul from Porto in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Porto to Istanbul for the best Porto - Istanbul flight prices

You are more likely to see cheaper flights to Istanbul from Porto when booking weeks ahead of your departure date. In general, you can expect to find flights to Istanbul for around $475 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Istanbul from Porto for as low as $359 on momondo.

There are 2 cabin classes available to choose from on Porto to Istanbul flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 10% of flights between Porto and Istanbul have experienced a delay on any given week. The average delay length over the past 12 months has been 117 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, Turkish Airlines have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

As of November 2026, there are 3 flights per day flying from Porto to Istanbul. The most common time of day flights depart is 10:00AM, with 50% of flights taking off at noon.

27 flights are operational weekly from Porto to Istanbul as of November 2026. The most popular departure day for this route is Sat, with 30% of flights per week taking off on this day.