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C. AMERICA & CARIBBEAN

C. AMERICA & CARIBBEAN

Boston, USA → Sofia, Bulgaria

Flight deals from Boston to Sofia, Bulgaria | Secret Flying

January 30, 2026

Boston to Sofia, Bulgaria for only $352 roundtrip

Cheap flights from Boston to Sofia, Bulgaria for only $352 roundtrip with Lufthansa and Austrian Airlines.

Flight deals from Boston to European cities | Secret Flying

November 7, 2025

Boston to European cities from only $361 roundtrip

Cheap flights from Boston to European cities from only $361 roundtrip with Lufthansa.