A major fare war from many USA airports to many airports in Austria, Belgium, Germany, Poland, Prague and Budapest. All three major alliances have low fares in mid $300s to mid $400s.
California airports include Los Angeles LAX, San Francisco SFO and San Jose SJC. Ticket prices are similar to all cities on sale and many cities under $450 from these three airports. There are other airports around the USA with similar sales.
Travel dates August through October 2017.
Sample fares from San Francisco SFO seen on Google Flights. Momondo.com and British Airways AARP discount tickets have lower priced tickets than shown below.
Brussels $433 Delta (Sep-May 2018)
Prague PRG $414 Delta, $420 Star Alliance, $464 BA
Google Flights San Francisco to Vienna
Sep 7 – Sep 14
- $429 Finnair
- $451 United/Austrian
- $480 Air France
Momondo.com drops the SFO-VIE fare down to $383 with TravelMerry.com link for a good itinerary too by airports and flight times.