Cheap flights from Seattle to Bonn - Rhein-Sieg from CA $532

View CA $532 flight on Tue, Aug. 19, 2025Opens in a new window

Popular airlines from Seattle to Bonn - Rhein-Sieg

  • Icelandair

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  • Condor

    Condor

  • Finnair

    Finnair

  • British Airways

    British Airways

  • Air Canada

    Air Canada

  • Alaska Airlines

    Alaska Airlines

  • Lufthansa

    Lufthansa

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Cheap flights from Seattle (SEA) to Bonn - Rhein-Sieg (CGN)

Prices were available within the past 7 days and start at CA $532 for one-way flights and CA $951 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Tue, Aug. 19 - Mon, Aug. 25
SEA
Seattle
CGN
Cologne
CA $951 Roundtrip, found 2 hours ago
CA $951
Roundtrip
found 2 hours ago
Select British Airways flight, departing Tue, Aug. 19 from Seattle to Cologne, returning Mon, Aug. 25, priced at CA $951 found 2 hours ago
American Airlines
Tue, Aug. 19 - Mon, Aug. 25
SEA
Seattle
CGN
Cologne
CA $1,034 Roundtrip, found 2 hours ago
CA $1,034
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Tue, Aug. 19 from Seattle to Cologne, returning Mon, Aug. 25, priced at CA $1,034 found 2 hours ago
Air Canada
Tue, Aug. 19 - Mon, Aug. 25
SEA
Seattle
CGN
Cologne
CA $1,072 Roundtrip, found 2 hours ago
CA $1,072
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Tue, Aug. 19 from Seattle to Cologne, returning Mon, Aug. 25, priced at CA $1,072 found 2 hours ago
British Airways
Tue, Aug. 19 - Mon, Aug. 25
SEA
Seattle
CGN
Cologne
CA $1,082 Roundtrip, found 2 hours ago
CA $1,082
Roundtrip
found 2 hours ago
Select British Airways flight, departing Tue, Aug. 19 from Seattle to Cologne, returning Mon, Aug. 25, priced at CA $1,082 found 2 hours ago
Iberia
Tue, Aug. 19 - Mon, Aug. 25
SEA
Seattle
CGN
Cologne
CA $1,265 Roundtrip, found 2 hours ago
CA $1,265
Roundtrip
found 2 hours ago
Select Iberia flight, departing Tue, Aug. 19 from Seattle to Cologne, returning Mon, Aug. 25, priced at CA $1,265 found 2 hours ago
Alaska Airlines
Tue, Aug. 19 - Mon, Aug. 25
SEA
Seattle
CGN
Cologne
CA $1,315 Roundtrip, found 2 hours ago
CA $1,315
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Tue, Aug. 19 from Seattle to Cologne, returning Mon, Aug. 25, priced at CA $1,315 found 2 hours ago

Find the cheapest month to fly from Seattle (SEA) to Frankfurt (FRA)

February is typically the cheapest month to fly

From CA $631 - CA $1,582 per traveller.

Graph displaying average flight prices per month

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