Find Cheap Flights to Bulgaria

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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(Round-trip)
Depart: Wed Sep 13 2017 Return: Mon Sep 18 2017 Trip spans 6 days
Turkish Airlines
Turkish Airlines
BOS
SOF
14h 10m
1 stop
SOF
BOS
27h 35m
1 stop
Depart: Tue Aug 1 2017 Return: Thu Sep 7 2017 Trip spans 38 days
Lufthansa
Lufthansa
BOS
SOF
19h 20m
1 stop
SOF
BOS
19h 30m
1 stop
Depart: Tue Aug 29 2017 Return: Sun Sep 17 2017 Trip spans 20 days
Air Serbia
Air Serbia
JFK
SOF
17h 50m
1 stop
SOF
JFK
27h 00m
1 stop
Depart: Wed Jan 3 2018 Return: Fri Jan 19 2018 Trip spans 17 days
Aeroflot
Aeroflot
JFK
SOF
34h 05m
1 stop
SOF
JFK
28h 10m
1 stop
Depart: Mon Dec 25 2017 Return: Wed Jan 10 2018 Trip spans 17 days
Qatar Airways
Qatar Airways
JFK
SOF
24h 50m
1 stop
SOF
JFK
25h 25m
1 stop
Depart: Mon Sep 4 2017 Return: Tue Oct 17 2017 Trip spans 44 days
SWISS
SWISS
EWR
SOF
19h 00m
1 stop
SOF
EWR
23h 00m
1 stop
Depart: Tue Nov 28 2017 Return: Fri Dec 29 2017 Trip spans 32 days
Air Canada
Air Canada
LGA
SOF
21h 10m
2 stops
SOF
LGA
34h 40m
2 stops
Depart: Wed Oct 18 2017 Return: Mon Oct 30 2017 Trip spans 13 days
KLM
KLM
MDW
SOF
15h 45m
2 stops
SOF
MDW
18h 40m
2 stops
Depart: Tue Jan 2 2018 Return: Thu Jan 18 2018 Trip spans 17 days
LOT Polish Airlines
LOT Polish Airlines
EWR
SOF
20h 00m
1 stop
SOF
EWR
22h 00m
1 stop
Depart: Fri Sep 8 2017 Return: Sat Sep 23 2017 Trip spans 16 days
Norwegian
Norwegian
JFK
BOJ
15h 30m
1 stop
BOJ
JFK
27h 50m
1 stop
Depart: Tue Aug 29 2017 Return: Thu Oct 12 2017 Trip spans 45 days
American Airlines
American Airlines
LGA
SOF
15h 40m
2 stops
SOF
LGA
24h 29m
2 stops
Depart: Thu Aug 3 2017 Return: Tue Aug 29 2017 Trip spans 27 days
Alitalia
Alitalia
ORD
SOF
13h 10m
1 stop
SOF
ORD
29h 10m
2 stops
Depart: Sat Sep 16 2017 Return: Sun Oct 1 2017 Trip spans 16 days
British Airways
British Airways
ORD
SOF
20h 15m
1 stop
SOF
ORD
30h 55m
1 stop
Depart: Mon Aug 28 2017 Return: Mon Sep 18 2017 Trip spans 22 days
Delta
Delta
DCA
SOF
37h 13m
2 stops
SOF
DCA
27h 27m
2 stops
Depart: Sun Dec 17 2017 Return: Sat Jan 6 2018 Trip spans 21 days
United
United
SFO
SOF
32h 20m
2 stops
SOF
SFO
24h 11m
2 stops
Depart: Wed Oct 4 2017 Return: Mon Oct 16 2017 Trip spans 13 days
$1033
Select
Austrian Airlines
Austrian Airlines
EWR
VAR
12h 00m
1 stop
VAR
EWR
31h 20m
1 stop
Depart: Mon Oct 23 2017 Return: Thu Nov 2 2017 Trip spans 11 days
Turkish Airlines
Turkish Airlines
BOS
SOF
26h 30m
1 stop
SOF
BOS
28h 35m
1 stop
Depart: Sat Sep 16 2017 Return: Sun Oct 1 2017 Trip spans 16 days
$1265
Select
Air France
Air France
MDW
SOF
15h 15m
2 stops
SOF
MDW
16h 49m
2 stops
Depart: Thu Jul 27 2017 Return: Tue Aug 8 2017 Trip spans 13 days
Lufthansa
Lufthansa
BOS
SOF
19h 15m
1 stop
SOF
BOS
30h 15m
1 stop
Depart: Fri Nov 17 2017 Return: Sat Nov 25 2017 Trip spans 9 days
Turkish Airlines
Turkish Airlines
BOS
SOF
27h 20m
1 stop
SOF
BOS
16h 05m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

San Francisco
$991
New York
only $717
only $622
Chicago
only $749
only $726
Newark
$675
Washington
$766
Boston
$579
Destination

Varna
$1033
Sofia
$579
Burgas
$732