All three alliances have a battle in Seattle for Germany and Switzerland with United Airlines low ticket prices for Seattle flights to Munich $407 and Frankfurt $505. American Airlines has Seattle to Zurich at $414. Delta has $433 fares to Zurich.
All three airlines have low fares to all three destinations. Here is a list of lowest fares.
SEA – Munich MUC $402-$407 Jan-Mar 2018; $474-$486 April-May 2018 with Star Alliance airlines.
SEA – Frankfurt FRA $505 Feb 28 – Mar 20 Star Alliance; $517 April-May 2018 with Delta.
SEA – Zurich ZRH $414-$447 April 3 – May 22 American Airlines.
SEA – Zurich ZRH $418-$467 Jan 10 – May 23, 2018 Delta Airlines.
SEA – Zurich ZRH $429-$437 April – May 2018 United Airlines.
United Airlines ticket flying Air Canada
Seattle SEA – Toronto YYZ – Munich MUC – Toronto YYZ – Seattle SEA
$406.16 round trip Sun March 4 – Wed March 14
