Top carrier choices for Phoenix Sky Harbor International Airport (PHX) to Vienna International Airport (VIE) often involve legacy carriers with one-stop service: Lufthansa (via FRA/MUC), KLM/Air France (via AMS/CDG), British Airways (via LHR), and U.S. carriers (via JFK/EWR/ORD connecting with partners). In July, Lufthansa and KLM typically provide consistent schedules and included checked baggage on standard economy fares, while basic economy or low-cost carriers may charge extras. Compare total travel time, layover city, loyalty program credit, and seat comfort when choosing. Expect July round-trip economy fares to range widely — plan $700–$1,400+ depending on timing and sales. CTA: compare airline options now and pick the best balance of price and amenities for your July trip.