Cheap flights from Boston to Bonn - Rhein-Sieg

View AU$603 flight on Thu, 13 Nov. 2025Opens in a new window

Popular airlines from Boston to Bonn - Rhein-Sieg

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    American Airlines

  • Emirates

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  • United

    United

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Cheap Flights from Boston (BOS) 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.

United
Thu, 13 Nov. - Thu, 27 Nov.
BOS
Boston
CGN
Cologne
AU$823 Return, found 2 days ago
AU$823
Return
found 2 days ago
Select United flight, departing Thu, 13 Nov. from Boston to Cologne, returning Thu, 27 Nov., priced at AU$823 found 2 days ago
United
Thu, 13 Nov. - Thu, 27 Nov.
BOS
Boston
CGN
Cologne
AU$823 Return, found 2 days ago
AU$823
Return
found 2 days ago
Select United flight, departing Thu, 13 Nov. from Boston to Cologne, returning Thu, 27 Nov., priced at AU$823 found 2 days ago
United
Thu, 13 Nov. - Thu, 27 Nov.
BOS
Boston
CGN
Cologne
AU$852 Return, found 2 days ago
AU$852
Return
found 2 days ago
Select United flight, departing Thu, 13 Nov. from Boston to Cologne, returning Thu, 27 Nov., priced at AU$852 found 2 days ago
Lufthansa
Thu, 13 Nov. - Thu, 27 Nov.
BOS
Boston
CGN
Cologne
AU$852 Return, found 2 days ago
AU$852
Return
found 2 days ago
Select Lufthansa flight, departing Thu, 13 Nov. from Boston to Cologne, returning Thu, 27 Nov., priced at AU$852 found 2 days ago
United
Thu, 13 Nov. - Thu, 27 Nov.
BOS
Boston
CGN
Cologne
AU$853 Return, found 2 days ago
AU$853
Return
found 2 days ago
Select United flight, departing Thu, 13 Nov. from Boston to Cologne, returning Thu, 27 Nov., priced at AU$853 found 2 days ago
Swiss International Air Lines
Thu, 13 Nov. - Thu, 27 Nov.
BOS
Boston
CGN
Cologne
AU$1,556 Return, found 2 days ago
AU$1,556
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Thu, 13 Nov. from Boston to Cologne, returning Thu, 27 Nov., priced at AU$1,556 found 2 days ago
Air Canada
Thu, 13 Nov. - Thu, 27 Nov.
BOS
Boston
CGN
Cologne
AU$2,116 Return, found 2 days ago
AU$2,116
Return
found 2 days ago
Select Air Canada flight, departing Thu, 13 Nov. from Boston to Cologne, returning Thu, 27 Nov., priced at AU$2,116 found 2 days ago

Find the cheapest month to fly from Boston (BOS) to Frankfurt (FRA)

May is typically the cheapest month to fly

From AU$537 - AU$1,077 per traveller.

Graph displaying average flight prices per month

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