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

  • Lufthansa

    Lufthansa

  • LOT-Polish Airlines

    LOT-Polish Airlines

  • Turkish Airlines

    Turkish Airlines

  • Aegean

    Aegean

  • Air France

    Air France

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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
Thu, 18 Dec. - Sat, 17 Jan.
SAW
Istanbul
CGN
Cologne
AU$308 Return, found 6 days ago
AU$308
Return
found 6 days ago
Select AJET flight, departing Thu, 18 Dec. from Istanbul to Cologne, returning Sat, 17 Jan., priced at AU$308 found 6 days ago
AJET
Sun, 30 Nov. - Tue, 9 Dec.
SAW
Istanbul
CGN
Cologne
AU$316 Return, found 6 days ago
AU$316
Return
found 6 days ago
Select AJET flight, departing Sun, 30 Nov. from Istanbul to Cologne, returning Tue, 9 Dec., priced at AU$316 found 6 days ago
Pegasus Airlines
Thu, 18 Dec. - Sat, 17 Jan.
SAW
Istanbul
CGN
Cologne
AU$337 Return, found 6 days ago
AU$337
Return
found 6 days ago
Select Pegasus Airlines flight, departing Thu, 18 Dec. from Istanbul to Cologne, returning Sat, 17 Jan., priced at AU$337 found 6 days ago
Turkish Airlines
Thu, 18 Dec. - Sat, 17 Jan.
IST
Istanbul
CGN
Cologne
AU$345 Return, found 6 days ago
AU$345
Return
found 6 days ago
Select Turkish Airlines flight, departing Thu, 18 Dec. from Istanbul to Cologne, returning Sat, 17 Jan., priced at AU$345 found 6 days ago
Lufthansa
Thu, 18 Dec. - Sat, 17 Jan.
IST
Istanbul
CGN
Cologne
AU$373 Return, found 6 days ago
AU$373
Return
found 6 days ago
Select Lufthansa flight, departing Thu, 18 Dec. from Istanbul to Cologne, returning Sat, 17 Jan., priced at AU$373 found 6 days ago
British Airways
Sun, 30 Nov. - Tue, 9 Dec.
IST
Istanbul
CGN
Cologne
AU$876 Return, found 6 days ago
AU$876
Return
found 6 days ago
Select British Airways flight, departing Sun, 30 Nov. from Istanbul to Cologne, returning Tue, 9 Dec., priced at AU$876 found 6 days ago

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

December is typically the cheapest month to fly

From AU$160 - AU$414 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.