Cheapest Koln to Istanbul round trip flight dates in December

1 - Choose the outbound flight

December

3,047 ₺

MON
TUE
WED
THU
FRI
SAT
SUN
1
3,197
₺
2
3,047
₺
3
3,547
₺
4
3,996
₺
5
3,547
₺
6
3,597
₺
7
3,177
₺
8
3,512
₺
9
3,197
₺
10
4,346
₺
11
5,295
₺
12
4,446
₺
13
4,546
₺
14
5,695
₺
15
4,046
₺
16
6,494
₺
17
5,995
₺
18
9,541
₺
19
10,041
₺
20
8,193
₺
21
7,793
₺
22
7,793
₺
23
11,789
₺
24
7,693
₺
25
8,193
₺
26
7,044
₺
27
5,445
₺
28
4,796
₺
29
5,345
₺
30
3,547
₺
31
3,047
₺

Cheap prices

2 - Choose the return flight

December

2,968 ₺
January

2,968 ₺
February

2,968 ₺

MON
TUE
WED
THU
FRI
SAT
SUN
1
3,047
₺
2
3,517
₺
3
3,117
₺
4
3,167
₺
5
3,161
₺
6
2,968
₺
7
2,968
₺
8
2,968
₺
9
2,968
₺
10
2,968
₺
11
2,968
₺
12
2,968
₺
13
2,968
₺
14
2,968
₺
15
2,968
₺
16
2,968
₺
17
2,968
₺
18
2,968
₺
19
2,968
₺
20
2,968
₺
21
2,968
₺
22
2,968
₺
23
2,968
₺
24
2,968
₺
25
2,968
₺
26
2,968
₺
27
2,968
₺
28
3,515
₺
29
4,930
₺
30
6,653
₺
31
6,653
₺

Cheap prices

🏨 Accommodation

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🚗 Car rental

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İstanbul travel guide

The best Istanbul plan leaves time for a few neighbourhoods instead of trying to finish the whole city. Add ferry journeys and everyday-life pauses between historical visits.

🏛️ Avoid stacking too many sights into one day on the historic peninsula.

⛴️ Treat a ferry ride as a chance to see the city from the water, not just as transport.

☕ Give Kadıköy and Moda their own time for streets, cafés and the waterfront.

💡 Crowds and journeys across the city can be tiring, so group each day around nearby neighbourhoods.

About Koln → Istanbul round trip flights

Use this page to find the cheapest flight dates for round trip flights from Koln to Istanbul. This view focuses on December.

Active filters: Month: December.

Price summary

The price calendar covers 1 month for round trip flights from Koln to Istanbul.

Lowest months: December 2026 (TRY 3,047).

Monthly lowest prices: December 2026: TRY 3,047.

In December 2026, the lowest listed price starts from TRY 3,047.

In December 2026, the lowest date starts from TRY 3,047.

Daily prices are listed for 31 dates.