Rare1 stop · 12h
IST to YULCanada
Montreal
$462
usually $775
−40%
Most monthly lows $690–$798. Cheaper than every other month on record (8).
Flights · IST → OPO
Istanbul to Porto
Best fare, round trip
$208
−27%
below its usual $285
you keep $77
GoodFound
- Depart
- Thu 21 Jan
- Return
- Thu 4 Feb
- Stay
- 14 nights
- Flight
- 1 stop · 6.5h
- Airline
LOT Polish
Most of this route’s monthly lows fall between $233 and $301. The drop beats 72% of measured fares on the board, over 10 observed months.
Cached fare — the booking search re-prices live before you pay.
PortugalPortoGranite, port wine and a river gorge through the middle — cheaper and steeper than Lisbon.Best windowMay–Jun · Sep–OctAirportsFrancisco Sá Carneiro (OPO)Every route into PortoFare seasonality
When this route gets cheap.
Fares bottom out in January around $208 and peak in September near $318, 53% dearer, across the 10 months we track. The cheapest itinerary we are tracking makes one stop and takes about 6.5 hours outbound, on a 14-night trip — ticketed under LOT Polish, which on a connecting fare need not operate every leg. At $208 for 3,127 km each way, that works out to about $33 per 1,000 km flown. That is below the $43 per 1,000 km typical of medium-haul fares here. Across the 4 departure cities we track at a similar distance from Porto, this fare ranks 3rd — 54% above the $135 from Stockholm. For context, the middle fare among the 14 routes of similar length we watch out of Istanbul is $207. The best time to be in Porto: May–Jun · Sep–Oct.
Cheapest day in the next 4 months: 21 Jan '27, $208
Press a day to compare its fares
The median cached fare across this calendar is 6% lower than when tracking began on 8 Aug — $286 then versus $270 now, across 16 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $197, on 18 Nov.
October 2026
1314151617Sunday 18 October: $356, above the usual price. Compare fares from this day.192021Thursday 22 October: $392, above the usual price. Compare fares from this day.Friday 23 October: $402, above the usual price. Compare fares from this day.24Sunday 25 October: $320, around the usual price. Compare fares from this day.26272829Friday 30 October: $318, around the usual price. Compare fares from this day.31
November 2026
Sunday 1 November: $334, around the usual price. Compare fares from this day.Monday 2 November: $239, below the usual price. Compare fares from this day.Tuesday 3 November: $257, around the usual price. Compare fares from this day.Wednesday 4 November: $235, below the usual price. Compare fares from this day.Thursday 5 November: $239, below the usual price. Compare fares from this day.Friday 6 November: $268, around the usual price. Compare fares from this day.7Sunday 8 November: $271, around the usual price. Compare fares from this day.9Tuesday 10 November: $229, below the usual price. Compare fares from this day.1112Friday 13 November: $255, around the usual price. Compare fares from this day.Saturday 14 November: $254, around the usual price. Compare fares from this day.Sunday 15 November: $316, around the usual price. Compare fares from this day.161718Thursday 19 November: $285, around the usual price. Compare fares from this day.Friday 20 November: $294, around the usual price. Compare fares from this day.Saturday 21 November: $243, below the usual price. Compare fares from this day.22Monday 23 November: $235, below the usual price. Compare fares from this day.Tuesday 24 November: $248, below the usual price. Compare fares from this day.Wednesday 25 November: $229, below the usual price. Compare fares from this day.Thursday 26 November: $229, below the usual price. Compare fares from this day.27282930
December 2026
Tuesday 1 December: $229, below the usual price. Compare fares from this day.23456789101112131415161718192021222324Friday 25 December: $311, around the usual price. Compare fares from this day.Saturday 26 December: $294, around the usual price. Compare fares from this day.Sunday 27 December: $329, around the usual price. Compare fares from this day.28293031
January 2027
Friday 1 January: $349, around the usual price. Compare fares from this day.23Monday 4 January: $307, around the usual price. Compare fares from this day.567891011121314151617181920Thursday 21 January: $208, the cheapest day in view. Compare fares from this day.2223242526272829Saturday 30 January: $223, below the usual price. Compare fares from this day.31
CheapestBelow usualUsualAbove usualCached fares · checked 13 Oct 2026 · bands from 120 tracked fares
Cheapest in Jan, around $208
27% below the $285 typical fare
$318Oct, above the usual price. Compare October fares.$229Nov, below the usual price. Compare November fares.$229Dec, below the usual price. Compare December fares.$208Jan ’27, the cheapest month. Compare January fares.$216Feb, below the usual price. Compare February fares.$266Mar, below the usual price. Compare March fares.$301Apr, above the usual price. Compare April fares.$300May, above the usual price. Compare May fares.$285Aug, around the usual price. Compare August fares.$318Sep, above the usual price. Compare September fares.
CheapestBelow usualUsualAbove usualPress a month to compare its fares
Cheapest round-trip fare found each month, Istanbul to Porto, from cached prices.
Route facts
- Airports
- Istanbul (IST) · Sabiha Gökçen (SAW) ↔ Francisco Sá Carneiro (OPO)
- Flight time
- ≈6.5 hours outbound
- Distance
- ≈3,127 km each way
- Typical price
- $285 round-trip (seasonal median)
- Airlines on the board
- LOT Polish
- Itineraries
- Connections on current fares
- Best months to visit
- May–Jun · Sep–Oct
Good to know
IST → OPO, answered.
Is $208 a good price for Istanbul to Porto?
Yes — the seasonal median for this route is around $285 round-trip. At $208 you're 27% below that, which we rate good for this route.
What is the cheapest month to fly from Istanbul to Porto?
Across 10 months of cached-fare history, Jan comes out cheapest on this route. The best months to actually be in Porto are May–Jun · Sep–Oct — when those overlap, that's your window.
How far in advance should I book IST → Porto?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 10 months of cached fares, Jan comes out lowest on this route. Our guide Why flight prices change covers what does move a fare.
Are there nonstop flights from Istanbul to Porto?
The current cheapest fares involve a connection, ticketed under LOT Polish. We hold no nonstop fare on this route right now, which does not mean none flies — search your exact dates to see what does.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on 17 October). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Porto?
Lock the flight first — then compare stays for 21 Jan '27 – 4 Feb '27 · 14 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next IST → OPO drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
Related routes on the board.
GreatNonstop · 1.5h
IST to ATHGreece
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$69
usually $110
−37%
Most monthly lows $94–$121. Cheaper than every other month on record (11).
GreatNonstop · 3.5h
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Most monthly lows $130–$247. Cheaper than every other month on record (7).
ExceptionalNonstop · 3h
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ExceptionalNonstop · 2.5h
LON to OPOUnited Kingdom
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$60
usually $160
−63%
Most monthly lows $118–$181. Cheaper than every other month on record (8).
ExceptionalNonstop · 3h
ROM to OPOItaly
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usually $140
−58%
Most monthly lows $89–$152. Cheaper than every other month on record (7).
