Cheap flights from Istanbul to Bonn - Rhein-Sieg

View AU$130 flight on Tue, 20 Jan. 2026Opens in a new window

Popular airlines from Istanbul to Bonn - Rhein-Sieg

  • Pegasus Airlines

    Pegasus Airlines

  • Flyviking

    Flyviking

  • Air France

    Air France

  • Lufthansa

    Lufthansa

  • LOT-Polish Airlines

    LOT-Polish Airlines

  • Turkish Airlines

    Turkish Airlines

  • KLM

    KLM

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Cheap Flights from Istanbul (IST) to Bonn - Rhein-Sieg (CGN)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

AJET
Sat, 12 Jul. - Tue, 15 Jul.
SAW
Istanbul
CGN
Cologne
AU$428 Return, found 17 hours ago
AU$428
Return
found 17 hours ago
Select AJET flight, departing Sat, 12 Jul. from Istanbul to Cologne, returning Tue, 15 Jul., priced at AU$428 found 17 hours ago
AJET
Sat, 12 Jul. - Tue, 15 Jul.
SAW
Istanbul
CGN
Cologne
AU$457 Return, found 17 hours ago
AU$457
Return
found 17 hours ago
Select AJET flight, departing Sat, 12 Jul. from Istanbul to Cologne, returning Tue, 15 Jul., priced at AU$457 found 17 hours ago
Pegasus Airlines
Sat, 12 Jul. - Tue, 15 Jul.
SAW
Istanbul
CGN
Cologne
AU$461 Return, found 17 hours ago
AU$461
Return
found 17 hours ago
Select Pegasus Airlines flight, departing Sat, 12 Jul. from Istanbul to Cologne, returning Tue, 15 Jul., priced at AU$461 found 17 hours ago
AJET
Sat, 12 Jul. - Tue, 15 Jul.
SAW
Istanbul
CGN
Cologne
AU$487 Return, found 17 hours ago
AU$487
Return
found 17 hours ago
Select AJET flight, departing Sat, 12 Jul. from Istanbul to Cologne, returning Tue, 15 Jul., priced at AU$487 found 17 hours ago
Turkish Airlines
Mon, 11 Aug. - Thu, 14 Aug.
IST
Istanbul
CGN
Cologne
AU$524 Return, found 4 days ago
AU$524
Return
found 4 days ago
Select Turkish Airlines flight, departing Mon, 11 Aug. from Istanbul to Cologne, returning Thu, 14 Aug., priced at AU$524 found 4 days ago
Lufthansa
Mon, 11 Aug. - Thu, 14 Aug.
IST
Istanbul
CGN
Cologne
AU$711 Return, found 4 days ago
AU$711
Return
found 4 days ago
Select Lufthansa flight, departing Mon, 11 Aug. from Istanbul to Cologne, returning Thu, 14 Aug., priced at AU$711 found 4 days ago

Find the cheapest month to fly from Istanbul (IST) to Frankfurt (FRA)

December is typically the cheapest month to fly

From AU$161 - AU$428 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.