Route brief · IST → SEL
Istanbul → Seoul
$484
−10% vs typical
seasonal median $540 · difference $56
Dec 31 – Jan 10 '27 · 10 nights
China Southern1 stop
- Usual monthly lows
- $514–$554
- Board rank
- Stronger than 20%
- Route sample
- 11 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefSELSeoulPalaces wedged between skyscrapers, barbecue smoke at midnight, cafés that outnumber people.Best windowApr–May · Sep–OctAirportsIncheon (ICN) · Gimpo (GMP)All routes into SeoulWhen this route gets cheap.
Cached-fare history: across 11 months, Dec is the cheapest for IST → SEL. Best time to be there: Apr–May · Sep–Oct.
Fares bottom out in December around $484 and peak in July near $799 — a $315 spread across the 11 months we track. The cheapest itinerary we are tracking makes one stop and takes about 11.5 hours outbound, on a 10-night trip — ticketed under China Southern, which on a connecting fare need not operate every leg. At $484 for 7,954 km each way, that works out to about $30 per 1,000 km flown. That is well under the $44 that long-haul fares on this board typically run. Of the 23 departure cities we track at a similar distance from Seoul, this is the cheapest right now — though Athens is within a few dollars. That puts it in the cheaper half of the 26 routes of similar length we watch out of Istanbul, where the middle fare is $580.
Cheapest day in the next 3 months: Nov 4 · $494 (29% below median)
Tap any day → live search
The median cached fare across this calendar is 1% lower than when tracking began on Aug 8 — $682 then versus $674 now, across 8 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 $494, on Nov 4.
September 2026
October 2026
Cheapest in Dec · around $484
10% below the $540 typical fare
Cheapest round-trip fare found per month · Istanbul → Seoul · cached-price history
Route facts
- Airports
- Istanbul (IST) · Sabiha Gökçen (SAW) ↔ Incheon (ICN) · Gimpo (GMP)
- Flight time
- ~11.5 hours outbound
- Distance
- ~7,954 km each way
- Typical price
- $540 round-trip (seasonal median)
- Airlines on the board
- China Southern
- Itineraries
- Connections on current fares
- Best months to visit
- Apr–May · Sep–Oct
IST → SEL, answered.
Is $484 a good price for Istanbul to Seoul?
Only slightly. The seasonal median is around $540 round-trip and this fare is 10% under it, about $56. We do not call a drop notable until 20%, so this is an ordinary price for the route rather than a reason to hurry.
What is the cheapest month to fly from Istanbul to Seoul?
Across 11 months of cached-fare history, Dec comes out cheapest on this route. The best months to actually be in Seoul are Apr–May · Sep–Oct — when those overlap, that's your window.
How far in advance should I book IST → Seoul?
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 11 months of cached fares, Dec comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from Istanbul to Seoul?
The current cheapest fares involve a connection, ticketed under China Southern. Nonstop options exist on many dates at higher prices — check the live search for your exact dates.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). 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 Seoul?
Lock the flight first — then compare stays for Dec 31 – Jan 10 '27 · 10 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next IST → SEL drop reaches you as soon as we find it.
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