$812 Find Cheap Flights from St. Louis to Sofia - Compare and Save

In the last 5 days, the lowest price for a flight from St. Louis to Sofia was $812 for a round-trip ticket.

Yes, you'll most likely have to show a valid passport before boarding the plane in St. Louis and on arrival in Sofia.

We unfortunately don’t have that data for this specific route.

Star Alliance is the only airline alliance operating flights between St. Louis and Sofia.

The two airlines most popular with KAYAK users for flights from St. Louis to Sofia are United Airlines and Air Canada. With an average price for the route of $828 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $1,209 and an overall rating of 7.1.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Sofia.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sofia from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sofia with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and SOF can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sofia from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.