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Cologne to Istanbul in October 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 October 2026, the cheapest return found recently is $175 with Ajet, 23 Oct – 11 Nov, found today.

Return

In October 2026, the cheapest return fare on each of 9 departure dates is usually $175 to $213. 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, 4 are usually cheaper than October 2026.

Cheapest return found recently

$175

23 Oct – 11 Nov · Ajet

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

out nonstop, back nonstop

found today

See prices for these datesCheck today's price

Cheapest we hold, of any age

$165

31 Oct – 5 Nov · Ajet

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

out nonstop, back 1 stop

found 6 days ago

See prices for these datesCheck today's price

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The cheapest dates in October 2026

DatesFromAirlineStopsFound
31 Oct – 5 Nov$165Ajetout nonstop, back 1 stopfound 6 days agoSee prices for these dates
30 Oct – 8 Nov$169Ajetout nonstop, back 1 stopfound 5 days agoSee prices for these dates
23 Oct – 11 Nov$175Ajetout nonstop, back nonstopfound todaySee prices for these dates
29 Oct – 2 Nov$182Pegasus Airlinesout nonstop, back nonstopfound 3 days agoSee prices for these dates
26 Oct – 7 Nov$187Ajetout nonstop, back 1 stopfound 6 days agoSee prices for these dates

Every date we hold

9 departure dates

21 Oct – 14 Nov: $232, found 4 days ago22 Oct – 24 Oct: $277, found 3 days ago23 Oct – 11 Nov: $175, found today24 Oct – 4 Nov: $213, found 4 days ago25 Oct – 14 Nov: $206, found 4 days ago26 Oct – 7 Nov: $187, found 6 days ago29 Oct – 2 Nov: $182, found 3 days ago30 Oct – 8 Nov: $169, found 5 days ago31 Oct – 5 Nov: $165, found 6 days agoOct
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
21 Oct – 14 Nov$232AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back 1 stopfound 4 days agoSee prices for these dates
22 Oct – 24 Oct$277AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound 3 days agoSee prices for these dates
23 Oct – 11 Nov$175AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound todaySee prices for these dates
24 Oct – 4 Nov$213Pegasus AirlinesCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back 1 stopfound 4 days agoSee prices for these dates
25 Oct – 14 Nov$206AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back 1 stopfound 4 days agoSee prices for these dates
26 Oct – 7 Nov$187AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back 1 stopfound 6 days agoSee prices for these dates
29 Oct – 2 Nov$182Pegasus AirlinesCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back nonstopfound 3 days agoSee prices for these dates
30 Oct – 8 Nov$169AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back 1 stopfound 5 days agoSee prices for these dates
31 Oct – 5 Nov$165AjetCologne Bonn Airport (CGN) → Sabiha Gokcen International Airport (SAW)out nonstop, back 1 stopfound 6 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 dates
November 2026From $111Cheapest seen18 departure dates15 Nov – 24 Nov · found 2 days agoSee prices for these datesEvery date in November 2026
December 2026From $12416 departure dates3 Dec – 5 Dec · found 2 days agoSee prices for these datesEvery date in December 2026
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 datesEvery date in March 2027
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 11 hours agoSee prices for these dates

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