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Cheap Flights from Boston to Sofia, Bulgaria - BOS to SOF

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You must make at least one connection to fly from Boston, MA to Sofia.
United Airlines has 474 connecting flights between Boston, MA and Sofia.

Cheap International Flights from Boston - BOS

Flights
Airline
Lowest Price
Aer Lingus, US Airways, Icelandair, Air Europa, Iberia, Delta, Aeroflot, Tap Portugal, Turkish, Virgin Atlantic, Swiss, KLM, Austrian, Lufthansa, Air France, American, United, Air Canada, British Airways, Finnair, Alitalia, SAS, Brussels
$648
Singapore, KLM, Turkish, Swiss, American, Delta, United, Air Canada, Aeroflot, British Airways, Air France, Alitalia, Austrian, Lufthansa, US Airways
$693
Alitalia, United, Finnair, British Airways, Air Canada, Brussels, Aer Lingus, Lufthansa, Air France, Turkish, Swiss, Air Tahiti Nui, Austrian, KLM, Delta, US Airways, Icelandair, Air Europa, Iberia, Aeroflot, Tap Portugal, American
$705

Cheap International Flights to Sofia - SOF

Flights
Airline
Lowest Price
LOT, KLM, Turkish, Air France, Lufthansa, Iberia, Austrian, Alitalia, United, Air Berlin, Finnair, British Airways, Air Canada, American, Aeroflot
$576
British Airways, Finnair, Austrian, Alitalia, Air Canada, United, American, Air France, Lufthansa, KLM
$721
American, United, Air Berlin, Singapore, Lufthansa, British Airways, Alitalia, Austrian, Egyptair, US Airways, Royal Air Maroc, KLM, Air France, Turkish, Swiss, LOT, Air Canada, Delta, Aeroflot, Royal Jordanian
$507
KLM, Brussels, Finnair, British Airways, US Airways, Alitalia, Royal Air Maroc, Delta, Aeroflot, Turkish, Swiss, LOT, Iberia, Air Europa, Icelandair, Austrian, Air Canada, United, Aer Lingus, Air France, Emirates, Lufthansa, Air Berlin, American
$601
Austrian, KLM, US Airways, Icelandair, Brussels, Olympic, Iberia, Delta, Aeroflot, LOT, Swiss, Turkish, Alitalia, British Airways, Lufthansa, Emirates, Air France, American, United, Air Canada, Egyptair
$603
Lufthansa, Turkish, Swiss, Austrian, United
$695
Lufthansa, Turkish, Swiss, Austrian
$668
Turkish, Alitalia, Swiss, LOT, TAROM, Aeroflot, Delta, Czech, Iberia, Air Europa, US Airways, KLM, Austrian, Brussels, Finnair, British Airways, United, Lufthansa, Air France, Air Berlin, American, Air Canada
$580
Delta, United, Air France, Turkish, British Airways, Alitalia, Austrian, Lufthansa, KLM
$695
British Airways, Lufthansa, Air Berlin, Aeroflot, US Airways, Turkish, Austrian, Alitalia
$644
Air France, Air Canada, Alitalia, Austrian, Swiss, KLM, Turkish, US Airways, Lufthansa, Aeroflot, United, Air Berlin, LOT
$580
Aer Lingus, KLM, US Airways, Royal Air Maroc, Icelandair, Iberia, Aeroflot, LOT, Swiss, Turkish, Brussels, Transaero, Austrian, Lufthansa, Air France, Air Berlin, American, United, Air Canada, Singapore, British Airways, Finnair, Alitalia, Delta, Air Europa, Ethiopian
$524
Icelandair, Finnair, Brussels, Alitalia, Austrian, Avianca, Transaero, KLM, US Airways, Air Canada, Turkish, Swiss, Aeroflot, Delta, Royal Air Maroc, Air Europa, British Airways, LOT, Iberia, Aer Lingus, Lufthansa, Air France, Air Berlin, American, United
$582
Austrian, KLM, Air Berlin, US Airways, Czech, Delta, Aeroflot, LOT, Alitalia, Brussels, Air France, Lufthansa, American, United, Swiss, Air Canada, British Airways, Finnair, Iberia, Turkish
$589
Brussels, Alitalia, Austrian, Transaero, KLM, US Airways, Iberia, Delta, Swiss, LOT, Aeroflot, Finnair, British Airways, Aer Lingus, Emirates, Air Berlin, Lufthansa, Air France, American, United, Air Canada, Turkish
$501
Transaero, KLM, US Airways, Royal Air Maroc, Air Europa, Iberia, Czech, Austrian, Alitalia, Brussels, Finnair, British Airways, Singapore, United, Air Berlin, Air France, Lufthansa, Delta, Aeroflot, LOT, Swiss, Turkish, Virgin Atlantic
$371
US Airways, Royal Air Maroc, Icelandair, Air Europa, Iberia, Delta, Aeroflot, LOT, Swiss, Turkish, KLM, Austrian, Alitalia, Air France, Lufthansa, Aer Lingus, Air Berlin, American, United, Air Canada, British Airways, Finnair, Brussels, Virgin Atlantic
$631
Alitalia, Austrian, KLM, Turkish
$715
US Airways, Royal Air Maroc, Icelandair, Air Europa, Iberia, Delta, Aeroflot, LOT, Swiss, Turkish, KLM, Austrian, Aer Lingus, Lufthansa, Air Canada, Air France, American, United, British Airways, Finnair, Brussels, Alitalia
$586
Air Canada, British Airways, Finnair, Brussels, Alitalia, Austrian, SAS, Swiss, KLM, Jet Airways, US Airways, United, Delta, American, Air France, Lufthansa, Icelandair
$868
Iberia, Transaero, KLM, US Airways, Royal Air Maroc, Turkish, Swiss, Icelandair, Brussels, Alitalia, Air Europa, Aeroflot, Delta, Austrian, Finnair, United, British Airways, Air Canada, American, Air Berlin, Air France, Lufthansa, Aer Lingus
$503
Transaero, Turkish, US Airways, El Al, Swiss, LOT, Royal Jordanian, Aeroflot, Delta, Czech, Iberia, KLM, Lufthansa, Air France, Austrian, Brussels, Alitalia, Finnair, British Airways, Air Canada, United, American, Air Berlin, Ethiopian
$574
Lufthansa, KLM, Swiss, Austrian, Alitalia, Air Canada, Delta, Air France, American, United, US Airways
$730
Brussels, Finnair, British Airways, Austrian, JetBlue, KLM, US Airways, Royal Air Maroc, Icelandair, Air Europa, Iberia, Delta, Aeroflot, LOT, Swiss, Turkish, Air Canada, United, American, Alitalia, Aer Lingus, Emirates, Lufthansa, Air Berlin, Air France
$588
American, United, Delta, Air Canada, Aeroflot, Finnair, Brussels, Alitalia, Austrian, Swiss, KLM, Turkish, US Airways, Air Berlin, Air France, Aer Lingus, British Airways, Emirates, Iberia, Lufthansa
$585
Iberia, Delta, Aeroflot, LOT, Swiss, Turkish, Air France, British Airways, Czech, American, United, Emirates, Lufthansa, Finnair, Brussels, Alitalia, Austrian, KLM, Air Europa, US Airways, Air Canada
$581
Egyptair, Air India, Emirates, Kuwait, British Airways, Finnair, Austrian, Asiana, Lufthansa, Air France, Pakistan, Singapore, Etihad, American, China Airlines, United, All Nippon, Air Berlin, Ethiopian, KLM, Cathay, Air China, Swiss, Turkish, JAL, Virgin Atlantic, Brussels, Gulf Air, Thai, US Airways, Royal Jordanian, Aeroflot, China Southern, China Eastern, Air Canada, Qatar, Uzbekistan, Delta, Malaysia, Saudi Arabian
$718
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Cheap Flights from Boston to Sofia, Bulgaria, from $646 Round trip from BOS to SOF