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Cologne to Istanbul in December 2026 CGN, QKL, QKU → IST, SAW

Cologne Bonn Airport (CGN), Cologne Hbf Railway Station (QKL), Messe/Deutz Rail Station (QKU) → Istanbul New Airport (IST), Sabiha Gokcen International Airport (SAW)

For departures in December 2026, the cheapest return found recently is $318 with Ryanair, 21 Dec – 8 Jan 2027, found yesterday. The cheapest one-way found recently is $76 with Ajet, 30 Dec, found 2 days ago.

Return

In December 2026, the cheapest return fare on each of 17 departure dates is usually $174 to $312. Across all 61 departure dates we hold on this route, it is usually $132 to $213. Of the 6 months with enough return fares to compare, December 2026 is usually the most expensive.

Cheapest return found recently

$318

21 Dec – 8 Jan 2027 · Ryanair

Cologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)

out 2 stops, back 1 stop

found yesterday

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Cheapest we hold, of any age

$124

3 Dec – 5 Dec · Ajet

Cologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)

out nonstop, back nonstop

found 2 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
3 Dec – 5 Dec$124Ajetout nonstop, back nonstopfound 2 days agoSee prices for these dates
5 Dec – 10 Dec$125Ajetout nonstop, back nonstopfound 4 days agoSee prices for these dates
4 Dec – 9 Dec$134Pegasus Airlinesout nonstop, back nonstopfound 3 days agoSee prices for these dates
6 Dec – 14 Dec$137Pegasus Airlinesout nonstop, back nonstopfound 7 days agoSee prices for these dates
30 Dec – 11 Jan 2027$174Ajetout nonstop, back nonstopfound 5 days agoSee prices for these dates

Every date we hold

17 departure dates

3 Dec – 5 Dec: $124, found 2 days ago4 Dec – 9 Dec: $134, found 3 days ago5 Dec – 10 Dec: $125, found 4 days ago6 Dec – 14 Dec: $137, found 7 days ago10 Dec – 20 Dec: $177, found 2 days ago16 Dec – 5 Jan 2027: $367, found 3 days ago18 Dec – 18 Dec: $335, found yesterday19 Dec – 9 Jan 2027: $330, found 4 days ago20 Dec – 24 Dec: $208, found 2 days ago21 Dec – 8 Jan 2027: $318, found yesterday24 Dec – 24 Dec: $298, found 2 days ago25 Dec – 28 Dec: $272, found 6 days ago26 Dec – 8 Jan 2027: $312, found 5 days ago27 Dec – 15 Jan 2027: $224, found 6 days ago28 Dec – 9 Jan 2027: $293, found 3 days ago30 Dec – 11 Jan 2027: $174, found 5 days ago31 Dec – 7 Jan 2027: $212, found 4 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
3 Dec – 5 Dec$124AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound 2 days agoSee prices for these dates
4 Dec – 9 Dec$134Pegasus AirlinesCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound 3 days agoSee prices for these dates
5 Dec – 10 Dec$125AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound 4 days agoSee prices for these dates
6 Dec – 14 Dec$137Pegasus AirlinesCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound 7 days agoSee prices for these dates
10 Dec – 20 Dec$177AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound 2 days agoSee prices for these dates
16 Dec – 5 Jan 2027$367Pegasus AirlinesCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back 1 stopfound 3 days agoSee prices for these dates
18 Dec – 18 Dec$335SunExpressCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out 1 stop, back nonstopfound yesterdaySee prices for these dates
19 Dec – 9 Jan 2027$330Wizz AirCologne Bonn Airport (CGN) → Istanbul New Airport (IST)out 1 stop, back 2 stopsfound 4 days agoSee prices for these dates
20 Dec – 24 Dec$208RyanairCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out 1 stop, back nonstopfound 2 days agoSee prices for these dates
21 Dec – 8 Jan 2027$318RyanairCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 1 stopfound yesterdaySee prices for these dates
24 Dec – 24 Dec$298Corendon AirlinesCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out 1 stop, back nonstopfound 2 days agoSee prices for these dates
25 Dec – 28 Dec$272AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound 6 days agoSee prices for these dates
26 Dec – 8 Jan 2027$312Air SerbiaCologne Bonn Airport (CGN) → Istanbul New Airport (IST)out 1 stop, back 3 stopsfound 5 days agoSee prices for these dates
27 Dec – 15 Jan 2027$224Pegasus AirlinesCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out 1 stop, back nonstopfound 6 days agoSee prices for these dates
28 Dec – 9 Jan 2027$293AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back 2 stopsfound 3 days agoSee prices for these dates
30 Dec – 11 Jan 2027$174AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound 5 days agoSee prices for these dates
31 Dec – 7 Jan 2027$212AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back 1 stopfound 4 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $111.

October 2026From $1659 departure dates31 Oct – 5 Nov · found 6 days agoSee prices for these datesEvery date in October 2026
November 2026From $111Cheapest seen17 departure dates15 Nov – 24 Nov · found 2 days agoSee prices for these datesEvery date in November 2026
December 2026From $12417 departure dates3 Dec – 5 Dec · found 2 days agoSee prices for these dates
January 2027From $1245 departure dates23 Jan 2027 – 29 Jan 2027 · found 5 days agoSee prices for these dates
February 2027From $1154 departure dates22 Feb 2027 – 26 Feb 2027 · found 6 days agoSee prices for these dates
March 2027From $1882 departure dates7 Mar 2027 – 11 Mar 2027 · found yesterdaySee prices for these dates
April 2027From $1422 departure dates3 Apr 2027 – 10 Apr 2027 · found 2 days agoSee prices for these dates
May 2027From $2591 departure date1 May 2027 – 8 May 2027 · found 4 days agoSee prices for these dates
July 2027From $2301 departure date5 Jul 2027 – 9 Jul 2027 · found 2 days agoSee prices for these dates
September 2027From $1123 departure dates23 Sept 2027 – 13 Oct 2027 · found 6 hours agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 3 departure dates is usually $61 to $70. Across all 28 departure dates we hold on this route, it is usually $63 to $115. Of the 5 months with enough one-way fares to compare, December 2026 is usually the cheapest.

Cheapest one-way found recently

$76

30 Dec · Ajet

Cologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)

nonstop

found 2 days ago

Open this tripCheck today's price

Cheapest we hold, of any age

$58

3 Dec · Ajet

Cologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)

nonstop

found 6 days ago

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
3 Dec$58Ajetnonstopfound 6 days agoOpen this trip
31 Dec$64Ajetnonstopfound 5 days agoOpen this trip
30 Dec$76Ajetnonstopfound 2 days agoOpen this trip

Every date we hold

3 departure dates

3 Dec: $58, found 6 days ago30 Dec: $76, found 2 days ago31 Dec: $64, found 5 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
3 Dec$58AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)nonstopfound 6 days agoOpen this trip
30 Dec$76AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)nonstopfound 2 days agoOpen this trip
31 Dec$64AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)nonstopfound 5 days agoOpen this trip

Which month looks cheapest?

December 2026 is the cheapest month — from $58.

December 2026From $58Cheapest seen3 departure dates3 Dec · found 6 days agoOpen this trip
January 2027From $596 departure dates8 Jan 2027 · found 23 hours agoOpen this trip
February 2027From $604 departure dates15 Feb 2027 · found 5 days agoOpen this trip
March 2027From $586 departure dates1 Mar 2027 · found 14 hours agoOpen this trip
April 2027From $1036 departure dates25 Apr 2027 · found 5 days agoOpen this trip
June 2027From $1032 departure dates14 Jun 2027 · found 4 days agoOpen this trip
August 2027From $591 departure date20 Aug 2027 · found 2 days agoOpen 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