Air Canada

Star Alliance $564-$579 SFO to Barcelona Dec-May

Summer 2017 fare deal $466 SkyTeam and Star Alliance Boston to London

Air Canada $477, DL $492, LH $542 Philadelphia to Barcelona or Madrid Dec-May

a screenshot of a flight information

Fare Alert $480-$524 Boston to London all alliances Nov-August 2017

Star Alliance/SkyTeam Portland PDX to London $543-$603 April-May 2017

All alliances LAX/SFO to Dublin $394-$550 Sep-May

Star Alliance $538 BOS/ORD/WAS to Athens, $600s ATL/EWR/LAX/IAH Sep-May 2017

Star Alliance SFO to Dublin $503-$642 Sep-June 15, 2017

Star Alliance $569-$694 BOS/LAX/NYC/ORD/WAS to Dubai Sep-May 2017

United $536 Chicago to Frankfurt Nov 22-Dec 15 only

BoardingArea