Flights to Bonn - Rhein-Sieg from Seattle - ￥59,743

View ￥59,743 flight on Sun, Sep 21, 2025Opens in a new window

Popular airlines from Seattle to Bonn - Rhein-Sieg

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

Prices were available within the past 7 days and start at ￥59,743 for one-way flights and ￥122,390 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Aug 11 - Sat, Aug 16
SEA
Seattle
CGN
Cologne
￥122,390 Roundtrip, found 5 days ago
￥122,390
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Aug 11 from Seattle to Cologne, returning Sat, Aug 16, priced at ￥122,390 found 5 days ago
American Airlines
Mon, Aug 11 - Sat, Aug 16
SEA
Seattle
CGN
Cologne
￥123,020 Roundtrip, found 5 days ago
￥123,020
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Aug 11 from Seattle to Cologne, returning Sat, Aug 16, priced at ￥123,020 found 5 days ago
British Airways
Mon, Aug 11 - Sat, Aug 16
SEA
Seattle
CGN
Cologne
￥149,040 Roundtrip, found 5 days ago
￥149,040
Roundtrip
found 5 days ago
Select British Airways flight, departing Mon, Aug 11 from Seattle to Cologne, returning Sat, Aug 16, priced at ￥149,040 found 5 days ago
Finnair
Mon, Aug 11 - Sat, Aug 16
SEA
Seattle
CGN
Cologne
￥152,570 Roundtrip, found 5 days ago
￥152,570
Roundtrip
found 5 days ago
Select Finnair flight, departing Mon, Aug 11 from Seattle to Cologne, returning Sat, Aug 16, priced at ￥152,570 found 5 days ago
Iberia
Mon, Aug 11 - Sat, Aug 16
SEA
Seattle
CGN
Cologne
￥153,840 Roundtrip, found 5 days ago
￥153,840
Roundtrip
found 5 days ago
Select Iberia flight, departing Mon, Aug 11 from Seattle to Cologne, returning Sat, Aug 16, priced at ￥153,840 found 5 days ago
Turkish Airlines
Mon, Aug 11 - Sat, Aug 16
SEA
Seattle
CGN
Cologne
￥223,700 Roundtrip, found 5 days ago
￥223,700
Roundtrip
found 5 days ago
Select Turkish Airlines flight, departing Mon, Aug 11 from Seattle to Cologne, returning Sat, Aug 16, priced at ￥223,700 found 5 days ago

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

February is typically the cheapest month to fly

From ￥68,491 - ￥171,728 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.