Nonstop flights from Seoul to Istanbul from $752 GMP, ICN → IST, SAW
Gimpo International Airport (GMP), Incheon International Airport (ICN) → Istanbul New Airport (IST), Sabiha Gokcen International Airport (SAW)
The cheapest nonstop return found recently is $752 with Asiana Airlines, 31 Dec – 9 Jan 2027, found 2 days ago.
Nonstop return
The cheapest nonstop return fare on each of 13 departure dates is usually $742 to $876.
Cheapest nonstop return
$752
31 Dec – 9 Jan 2027 · Asiana Airlines
Incheon International Airport (ICN) → Istanbul New Airport (IST)
Leaves 1:55 p.m. · Return leaves 7:55 a.m. · 22 h 10 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Airlines flying it nonstop on the return fares we hold: Korean Air (12 departure dates), Asiana Airlines (8 departure dates), Turkish Airlines (7 departure dates).
On the 17 trips where we hold both on the same dates, nonstop cost a median $246 (49.6%) more than the cheapest fare with stops. Nonstop was cheaper or the same price on 1 of those 17 trips.
Every nonstop date we hold
Nonstop fares on 13 of the 24 departure dates we hold for this route.
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 17 Nov – 28 Nov | $1,263 | Asiana Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 8 days ago | See prices for these dates |
| 24 Nov – 5 Dec | $960 | Asiana Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 8 days ago | See prices for these dates |
| 8 Dec – 11 Jan 2027 | $742 | Asiana Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 17 Dec – 26 Dec | $876 | Turkish Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 23 Dec – 7 Jan 2027 | $785 | Korean Air | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 31 Dec – 9 Jan 2027 | $752 | Asiana Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 1 Jan 2027 – 25 Jan 2027 | $855 | Korean Air | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 8 Jan 2027 – 16 Jan 2027 | $862 | Korean Air | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 14 Jan 2027 – 28 Jan 2027 | $722 | Asiana Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 20 Jan 2027 – 29 Jan 2027 | $740 | Korean Air | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 7 days ago | See prices for these dates |
| 2 Feb 2027 – 8 Feb 2027 | $742 | Asiana Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 14 Feb 2027 – 28 Feb 2027 | $760 | Korean Air | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 7 days ago | See prices for these dates |
| 23 May 2027 – 30 May 2027 | $1,156 | Korean Air | Incheon International Airport (ICN) → Istanbul New Airport (IST) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
Nonstop one-way
The cheapest nonstop one-way fare on each of 4 departure dates is usually $528 to $700.
Cheapest nonstop one-way
$803
23 Nov · Turkish Airlines
Incheon International Airport (ICN) → Istanbul New Airport (IST)
Leaves 10:40 a.m. · 12 h trip
nonstop
found 2 days ago
Airlines flying it nonstop on the one-way fares we hold: Asiana Airlines (2 departure dates), Turkish Airlines (2 departure dates).
On the 4 trips where we hold both on the same dates, nonstop cost a median $288 (94.8%) more than the cheapest fare with stops. Nonstop was cheaper or the same price on 0 of those 4 trips.
Every nonstop date we hold
Nonstop fares on 4 of the 5 departure dates we hold for this route.
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Nov | $803 | Turkish Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | nonstop | found 2 days ago | Open this trip |
| 30 Nov | $666 | Turkish Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | nonstop | found 6 days ago | Open this trip |
| 3 Dec | $511 | Asiana Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | nonstop | found 8 days ago | See prices for these dates |
| 15 Dec | $533 | Asiana Airlines | Incheon International Airport (ICN) → Istanbul New Airport (IST) | nonstop | found 6 days ago | Open this trip |
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