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Cheap flights from Istanbul to Seoul from $640 IST, SAW → GMP, ICN

Istanbul New Airport (IST), Sabiha Gokcen International Airport (SAW) → Gimpo International Airport (GMP), Incheon International Airport (ICN)

The cheapest return found recently is $640 with China Eastern, 2 Dec – 22 Dec, found 2 days ago.

Cheapest return found recently
$640, 2 Dec to 22 Dec
Usual return price
$596 to $680
Cheapest month to fly
December 2026, return fares from $513 found in the last 7 days
Airlines with nonstop flights
Korean Air, Turkish Airlines, Asiana Airlines

Return

The cheapest return fare on each of 32 departure dates is usually $596 to $680.

Cheapest return found recently

$640

2 Dec – 22 Dec · China Eastern

Istanbul New Airport (IST) → Incheon International Airport (ICN)

Leaves 10:00 p.m. · Return leaves 1:00 p.m. · 31 h 25 min of travel, both ways together

out 1 stop, back 1 stop · via Ashgabat Airport (ASB), Xianyang International Airport (XIY) · overnight connection

found 2 days ago

See prices for these datesCheck today's price

Cheapest nonstop return

$865

2 Dec – 21 Dec · Korean Air

Istanbul New Airport (IST) → Incheon International Airport (ICN)

Leaves 9:55 p.m. · Return leaves 2:05 a.m. · 22 h 10 min of travel, both ways together

out nonstop, back nonstop

found 2 days ago

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Found recently, and the cheapest we hold

Cheapest found recently $640 2 Dec – 22 Decfound 2 days agoSee prices for these dates

Cheapest we hold, of any age $513 3 Dec – 14 Decfound 5 days agoSee prices for these dates

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $462 to $576.

At $640, the cheapest return found recently is above that range.

Those were the prices on those days, not today's.

Is this a good return price?

Compared with the cheapest return fare on each of 32 departure dates from 23 Nov to 1 Aug 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.

Could nearby dates be cheaper?

We hold no other 20-night return fares leaving within 3 days of 2 Dec to compare.

Every date we hold

497 fares on 32 departure dates

23 Nov – 18 Dec: $661, found 6 days ago1 Dec – 30 Jan 2027: $649, found 4 days ago2 Dec – 21 Dec: $556, found 8 days ago3 Dec – 14 Dec: $513, found 5 days ago10 Dec – 31 Dec: $576, found 3 days ago24 Jan 2027 – 5 Feb 2027: $654, found 8 days ago1 Feb 2027 – 24 Feb 2027: $585, found 5 days ago3 Feb 2027 – 14 Feb 2027: $615, found 3 days ago8 Feb 2027 – 25 Feb 2027: $596, found 5 days ago22 Feb 2027 – 11 Mar 2027: $594, found 3 days ago23 Feb 2027 – 2 Mar 2027: $648, found 7 days ago24 Feb 2027 – 10 Mar 2027: $596, found 5 days ago2 Mar 2027 – 20 Mar 2027: $647, found 4 days ago7 Mar 2027 – 17 Mar 2027: $639, found 7 days ago15 Mar 2027 – 25 Mar 2027: $596, found 7 days ago21 Mar 2027 – 3 Apr 2027: $804, found 7 days ago22 Mar 2027 – 29 Mar 2027: $639, found 5 days ago24 Mar 2027 – 31 Mar 2027: $666, found 7 days ago5 Apr 2027 – 8 Apr 2027: $658, found 4 days ago5 May 2027 – 14 May 2027: $624, found 6 days ago15 May 2027 – 20 May 2027: $720, found 6 days ago30 May 2027 – 20 Jun 2027: $724, found 5 days ago1 Jun 2027 – 29 Jun 2027: $656, found 2 days ago3 Jun 2027 – 25 Jun 2027: $588, found 4 days ago20 Jun 2027 – 20 Jul 2027: $606, found 8 days ago30 Jun 2027 – 8 Jul 2027: $640, found 4 days ago1 Jul 2027 – 15 Aug 2027: $735, found 6 days ago2 Jul 2027 – 18 Jul 2027: $648, found 4 days ago26 Jul 2027 – 4 Aug 2027: $735, found 5 days ago27 Jul 2027 – 5 Aug 2027: $735, found 5 days ago31 Jul 2027 – 6 Aug 2027: $768, found 4 days ago1 Aug 2027 – 2 Sept 2027: $820, found 6 days agoDecFebMarMayJunJulAug
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
23 Nov – 18 Dec$661Turkmenistan AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
1 Dec – 30 Jan 2027$649Qatar AirwaysIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
2 Dec – 21 Dec$556China EasternIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 8 days agoSee prices for these dates
3 Dec – 14 Dec$513China Southern AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
10 Dec – 31 Dec$576Qatar AirwaysIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
24 Jan 2027 – 5 Feb 2027$654Qatar AirwaysIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 8 days agoSee prices for these dates
1 Feb 2027 – 24 Feb 2027$585Turkmenistan AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
3 Feb 2027 – 14 Feb 2027$615Qatar AirwaysIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
8 Feb 2027 – 25 Feb 2027$596Turkmenistan AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
22 Feb 2027 – 11 Mar 2027$594Turkmenistan AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
23 Feb 2027 – 2 Mar 2027$648China Southern AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
24 Feb 2027 – 10 Mar 2027$596Turkmenistan AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
2 Mar 2027 – 20 Mar 2027$647Qatar AirwaysIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
7 Mar 2027 – 17 Mar 2027$639MIAT Mongolian AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
15 Mar 2027 – 25 Mar 2027$596Turkmenistan AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
21 Mar 2027 – 3 Apr 2027$804Qanot SharqIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
22 Mar 2027 – 29 Mar 2027$639Turkmenistan AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
24 Mar 2027 – 31 Mar 2027$666Turkmenistan AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
5 Apr 2027 – 8 Apr 2027$658China Southern AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
5 May 2027 – 14 May 2027$624Qatar AirwaysSabiha Gokcen International Airport (SAW) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
15 May 2027 – 20 May 2027$720Turkish AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 2 stops, back 2 stopsfound 6 days agoSee prices for these dates
30 May 2027 – 20 Jun 2027$724China Southern AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
1 Jun 2027 – 29 Jun 2027$656China Southern AirlinesIstanbul New Airport (IST) → Gimpo International Airport (GMP)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
3 Jun 2027 – 25 Jun 2027$588China Southern AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
20 Jun 2027 – 20 Jul 2027$606Qatar AirwaysIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 8 days agoSee prices for these dates
30 Jun 2027 – 8 Jul 2027$640China Southern AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
1 Jul 2027 – 15 Aug 2027$735China Southern AirlinesIstanbul New Airport (IST) → Gimpo International Airport (GMP)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
2 Jul 2027 – 18 Jul 2027$648Qatar AirwaysIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
26 Jul 2027 – 4 Aug 2027$735China Southern AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
27 Jul 2027 – 5 Aug 2027$735China Southern AirlinesIstanbul New Airport (IST) → Gimpo International Airport (GMP)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
31 Jul 2027 – 6 Aug 2027$768China Southern AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
1 Aug 2027 – 2 Sept 2027$820China Southern AirlinesIstanbul New Airport (IST) → Incheon International Airport (ICN)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $513.

November 2026From $6611 departure date23 Nov – 18 Dec · found 6 days agoSee prices for these dates
December 2026From $513Cheapest seen4 departure dates3 Dec – 14 Dec · found 5 days agoSee prices for these dates
January 2027From $6541 departure date24 Jan 2027 – 5 Feb 2027 · found 8 days agoSee prices for these dates
February 2027From $5856 departure dates1 Feb 2027 – 24 Feb 2027 · found 5 days agoSee prices for these dates
March 2027From $5966 departure dates15 Mar 2027 – 25 Mar 2027 · found 7 days agoSee prices for these dates
April 2027From $6581 departure date5 Apr 2027 – 8 Apr 2027 · found 4 days agoSee prices for these dates
May 2027From $6243 departure dates5 May 2027 – 14 May 2027 · found 6 days agoSee prices for these dates
June 2027From $5884 departure dates3 Jun 2027 – 25 Jun 2027 · found 4 days agoSee prices for these dates
July 2027From $6485 departure dates2 Jul 2027 – 18 Jul 2027 · found 4 days agoSee prices for these dates
August 2027From $8201 departure date1 Aug 2027 – 2 Sept 2027 · found 6 days agoSee prices for these dates

Premium cabin fares from Istanbul to Seoul

Return

Business

The lowest business fare we have seen is $2,237, across 6 departure dates.

18 Nov – 29 Nov · IST → ICN · MIAT Mongolian Airlines

out 1 stop, back 1 stop · via ASB, UBN · overnight connection · 8 h connection

found 6 days ago

That business fare is 4.4 times the economy fare of $513.

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One-way

Business

The lowest business fare we have seen is $1,089, across 6 departure dates.

24 Nov · IST → ICN · Turkmenistan Airlines

1 stop · via ASB

found 3 days ago

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How far ahead were prices cheapest for Istanbul to Seoul?

Return

Fares 30 to 59 days before departure were typically 27% lower than 7 to 13 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

See these ranges as a table
Typical price in each booking range — round trip, per traveler in Economy.
Booked ahead byTypical fareCheapest dayAbove the cheapestDays of prices
7–13 days$682$596+36%12
14–29 days$620$468+24%34
30–59 days$501$462Cheapest seen37
60–89 days$505$462+1%48
90–179 days$562$468+12%49
180+ days$549$530+10%49

Live price for these dates

The cheapest return found recently is for 2 Dec – 22 Dec. A live search on this page shows what those dates cost now, for one adult in economy.

Questions about this trip

How much is a return flight from Istanbul to Seoul?

The cheapest return found recently is $640 with China Eastern, 2 Dec to 22 Dec, found 2 days ago. The cheapest return we hold, of any age, is $513 with China Southern Airlines, 3 Dec to 14 Dec, found 5 days ago. The cheapest return fare on each of 32 departure dates is usually $596 to $680.

What is the cheapest month to fly from Istanbul to Seoul?

December 2026 is the cheapest month for a return, from $513, 3 Dec to 14 Dec, found 5 days ago.

How far ahead should I book a flight from Istanbul to Seoul?

In 49 days of prices between 24 Sept and 11 Nov, return fares 30 to 59 days before departure were typically 27% lower than 7 to 13 days before departure.

Is there a direct flight from Istanbul to Seoul?

Yes, the cheapest nonstop return found recently is $865 with Korean Air, 2 Dec to 21 Dec, found 2 days ago.

Which airlines have the cheapest flights from Istanbul to Seoul?

Between 23 Nov and 1 Aug 2027, China Southern Airlines has the cheapest return on 12 of the 32 departure dates we hold, Turkmenistan Airlines on 8 and Qatar Airways on 8.

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work