
TYO to SELSouth Korea
Seoul
$112
usually $225
−50%
Most monthly lows $190–$228. Cheaper than every other month on record (9).
Display prices in
Flights · TYO → IST
Best fare, round trip
$772
−9%
below its usual $850
you keep $78
Most of this route’s monthly lows fall between $797 and $863. The drop beats 18% of measured fares on the board, over 6 observed months.
Cached fare — the booking search re-prices live before you pay.
TürkiyeIstanbulTwo continents, one skyline of minarets. Turkish Airlines’ mega-hub means constant fare battles.Best windowApr–May · Sep–OctAirportsIstanbul (IST) · Sabiha Gökçen (SAW)Every route into IstanbulFare seasonality
Fares bottom out in December around $645 and peak in April near $962, 49% dearer, across the 6 months we track. The cheapest itinerary we are tracking makes 2 stops and takes about 17 hours outbound, on a 15-night trip — ticketed under Air Premia, which on a connecting fare need not operate every leg. At $772 for 8,943 km each way, that works out to about $43 per 1,000 km flown. That is about the $44 per 1,000 km typical of long-haul fares here. Across the 21 departure cities we track at a similar distance from Istanbul, this fare ranks 18th — 2.0× the $390 we hold from Seoul. That puts it in the cheaper half of the 43 routes of similar length we watch out of Tokyo, where the middle fare is $946. The best time to be in Istanbul: Apr–May · Sep–Oct.
Cheapest day in the next 4 months: 20 Dec, $645
Press a day to compare its fares
The median cached fare across this calendar is 2% lower than when tracking began on 8 Aug — $949 then versus $929 now, across 17 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 $645, on 20 Dec.
October 2026
November 2026
December 2026
January 2027
Cheapest in Dec, around $645
24% below the $850 typical fare
Cheapest round-trip fare found each month, Tokyo to Istanbul, from cached prices.
Route facts
Good to know
Only slightly. The seasonal median is around $850 round-trip and this fare is 9% under it. We do not call a drop notable until 20%, so this is an ordinary price for the route rather than a reason to hurry.
Across 6 months of cached-fare history, Dec comes out cheapest on this route. The best months to actually be in Istanbul are Apr–May · Sep–Oct — when those overlap, that's your window.
We do not publish a number for this, because we cannot measure it yet.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 6 months of cached fares, Dec comes out lowest on this route. Our guide Why flight prices change covers what does move a fare.
The current cheapest fares involve a connection, ticketed under Air Premia. We hold no nonstop fare on this route right now, which does not mean none flies — search your exact dates to see what does.
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 Istanbul?
Lock the flight first — then compare stays for 26 Oct – 10 Nov · 15 nights.
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