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Find cheap flights from Boston to Bulgaria from $309

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Bulgaria departing on 7/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 7/5
Fri 7/12

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Best Bulgaria Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Sofia
Sofia1 stop$439
Varna
Varna2 stops$989
Burgas
Burgas2 stops$1,196

Good to know

Low season

January

High season

July

Cheapest flight

$309
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Boston to Sofia

FAQs - booking Bulgaria flights

  • How does KAYAK find such low prices on flights from Boston to Bulgaria?

    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 Boston to Bulgaria.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Bulgaria?

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

  • What is the Hacker Fare option on flights from Boston to Bulgaria?

    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 Bulgaria with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Bulgaria?

    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 Bulgaria from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Bulgaria

  • Morning departure is around 24% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Boston to Bulgaria

Need help choosing which airline to fly with from Boston to Bulgaria? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
SWISSOverall score based on 1934 reviews
7.4Food
7.8Boarding
8.4Crew
7.5Comfort
7.2Entertainment
Airline reviews

I arrived 59 minutes before the flight in Tampa due to Massive traffic jam and the flight was closed and I was told that I’d simply have to “book a new ticket on line myself and the gate agents couldn’t help me”. Even though the flight was delayed over 30 minutes, (leaving one hour and 29 minutes before departure, they refused to assist in any way explaining that it’s automatic and there can be no exceptions. Horrible experience due to poor management at gate. I fly this option 2-3 times a year and have a good experience with the cabin crew etc. But, Tampa agents are not trained or allowed customer service. I once was a gate agent for USAir, I know times have changed, but forcing me to purchase a new ticket and complete indifference and inconvenience. No thanks

2.0 MediocreRob, May 2024TPA - ZRH
Read more about SWISS reviews

I arrived 59 minutes before the flight in Tampa due to Massive traffic jam and the flight was closed and I was told that I’d simply have to “book a new ticket on line myself and the gate agents couldn’t help me”. Even though the flight was delayed over 30 minutes, (leaving one hour and 29 minutes before departure, they refused to assist in any way explaining that it’s automatic and there can be no exceptions. Horrible experience due to poor management at gate. I fly this option 2-3 times a year and have a good experience with the cabin crew etc. But, Tampa agents are not trained or allowed customer service. I once was a gate agent for USAir, I know times have changed, but forcing me to purchase a new ticket and complete indifference and inconvenience. No thanks

Crew members were good. Seats were packed and too tight .

Carry on luggage size for economy passengers significantly smaller than other airlines, so nearly all ecomy passengers had their bags taken and checked.

Had a short layover in Zurich, luggage marked expedite and short layover but still didn’t get luggage when arrived in Split until 3 days later even though husband got his.

On time flight, I requested wheelchair in Zurich , when I arrived they were no where to be found, I had one hour between flights I had to walk with great difficulty.

We had issues with upgrading our seats. The flight itself was fine.

Horrible experience. They "GAME" with seats they decided to play where you can`t select or get seat during check-in without paying and then forcing you to stay long line at the Customer Service at the gate to get a boarding ticket with seat assigned is pathetic. Will never fly with United again!

So terrible. They would not rebook me for a flight until 2 days. I had to spend so much money to get my own flight. They were rude and not helpful.

Overall a good experience, the flight was on time, the crew very attentive and friendly. However the seats are too cramped, there is no space, and as soon as the person in front reclines the seat, it's literally in your face.

Bag lost. Lost bag recovery process is an unsatisfying customer experience. Because 1) bag is still lost but also 2) the process is outdated and form-heavy and 3) in our case also involved a long line.

Overnight flight in the old style Business class, but still very good.

I was in business class, without the business class amenities. Large seat with lots of legroom, but no TV or bed. Food was okay, but I did enjoy the Turkish red wine.

Excellent service and comfort from the moment you check in. Flight crew is hyper focused on making passengers comfortable and at ease. It’s like a flying hotel!

Only chicken as a meat dish through out the flight

Nothing really was great as such. Seen other no name airlines perform better.

Quality of service on board was very inconsistent. FA service primarily seemed robotic and they barely engaged with passengers

I’m unclear why I had to pay extra for assigned seats as Turkish airlines did not honor the seating. We were placed across the aisle from each other on TK 34, and were seated behind one another on TK 694. Because my name was misspelled on e-ticket (Klawiter, instead of Klawitter) I could not log onto website to get the connection gate number in Istanbul. The monitors in the airport were a jumbled mess 1/2 Arabic and 1/2 English.

On line check in needs a lot of improvement. I tried and gave up.

Food not good, flight attendants not the best, not accommodating very ruff

the female flight attendant was racist towards me. I could tell she treated the two other passengers next to me with more softness.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Everything was pretty good except for food. They need to improve on it compared to other airlines.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the premium paid for the first class ticket

Not worth the price of premium class ticket paid, felt more like steerage.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

I flew Delta last week and United Airlines is a poor substitute mechanical problems with the plane and shitty food among other things made my travel experience what’s become to be expected from United no way is it ever worth the money they make us pay

I had a great flight. Everything went smoothly and the flight arrived early.

Well....let's start from the point that I had to stay in airport for 12 hours instead of 2 that was scheduled. Poor company and even worst customer service. Never again....

Poor, we had 1 hour to grab our checked luggage, go through customs, recheck bags and run across terminals to make our United flight. Poorly planned connections.

Check in in Albuquerque was awful. The people were great but they were over loaded. The procedures were terrible. We got through fine but it took 90+ minutes.

Will try to not fly with them again. Delays because of weather but got redirected to an airport where I could not make connection.

Staff didn’t care in business class. Closed the door on my mom while she was on the jetbridge and flight attendant told me she would make it from the connecting flight. They lied. My luggage was damaged on arrival. No success in filing damage claim.

Boston Logan is a crummy airport - signage is terrible or lacking in areas. Boarding seemed to be a free for all and with all the different airlines speaking, you couldn't tell who was supposed to be where and when. Plain and simple, airlines should board from the back of the plane to the front. Also someone was sitting in my seat. By the time that was figured out, I had to place my overhead behind me which made de-planing more difficult. Logan is not Lufthansa's fault so that is not on them, Boarding is on them! Still, overall it was a Good Experience flying with Lufthansa. This is not my first flight with them...

Overall, the flight was comfortable without any serious issues. Transit through Frankfurt airport was a little confusing, but not too difficult if you follow the signs

There was a screaming child behind our seats. This prevented us from getting any sleep during the night.

There was a screaming child just behind our seats. This prevented us from getting any sleep during the night!!

Staff disappeared after dinner service until breakfast, no help with beds, no help running to our gate to catch connection cause flight was late, our luggage didn’t make it, took over 24 hours to get luggage to hotel, no compensation!!

Everything was good except food. I believe there is room for improvement

Awful. Delay, lost vacation time and travel time now more than 24h

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

There was a problem in the luggage because there were not porters

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

they are improving. The crew from Charlotte to Tampa was outstanding. SMILING and trying to be helpful with the customers.

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

Book cheap flights from Boston to Bulgaria

Recent round-trip flight deals

9/2Mon
1 stopAustrian Airlines
17h 50mBOS-SOF
9/16Mon
1 stopAustrian Airlines
28h 45mSOF-BOS
$439
9/2Mon
1 stopAustrian Airlines
11h 30mBOS-SOF
9/16Mon
2 stopsAustrian Airlines
31h 40mSOF-BOS
$499
11/4Mon
1 stopBritish Airways
13h 50mBOS-SOF
11/18Mon
1 stopBritish Airways
27h 35mSOF-BOS
$510
11/4Mon
2 stopsBritish Airways
16h 40mBOS-SOF
11/18Mon
1 stopBritish Airways
26h 25mSOF-BOS
$514
9/17Tue
1 stopTurkish Airlines
34h 05mBOS-SOF
10/3Thu
1 stopTurkish Airlines
35h 10mSOF-BOS
$565
12/1Sun
1 stopLufthansa
14h 10mBOS-SOF
12/15Sun
1 stopLufthansa
19h 25mSOF-BOS
$581
11/1Fri
2 stopsUnited Airlines
22h 05mBOS-SOF
11/15Fri
1 stopUnited Airlines
19h 30mSOF-BOS
$608
10/5Sat
1 stopTurkish Airlines
27h 40mBOS-SOF
10/19Sat
1 stopTurkish Airlines
29h 45mSOF-BOS
$647
7/28Sun
1 stopLufthansa
15h 40mBOS-SOF
8/28Wed
1 stopLufthansa
18h 50mSOF-BOS
$772
7/16Tue
2 stopsUnited Airlines
30h 30mBOS-SOF
8/28Wed
1 stopUnited Airlines
18h 50mSOF-BOS
$778

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Recent one-way flight deals

7/8Mon
3 stops
36h 54mBOS-SOF
$309
7/13Sat
3 stops
43h 40mBOS-SOF
$349
7/8Mon
2 stops
28h 29mBOS-SOF
$379
8/28Wed
2 stopsScandinavian Airlines
21h 55mBOS-SOF
$392
8/28Wed
3 stops
24h 40mBOS-SOF
$406
8/28Wed
1 stopTurkish Airlines
27h 40mBOS-SOF
$411
7/13Sat
2 stops
26h 50mBOS-SOF
$416
7/13Sat
1 stop
30h 35mBOS-SOF
$426
7/13Sat
2 stops
34h 05mBOS-VAR
$463
7/12Fri
1 stopAustrian Airlines
13h 05mBOS-VAR
$755

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Last minute flights from Boston to Bulgaria

Last minute flight, train and bus deals

6/7Fri
multi-stopLufthansa
19h 55mBOS-SOF
6/14Fri
multi-stopLufthansa
18h 50mSOF-BOS
$991
6/7Fri
multi-stopUnited Airlines
15h 40mBOS-SOF
6/14Fri
multi-stopUnited Airlines
19h 43mSOF-BOS
$998
6/7Fri
multi-stopLufthansa
19h 55mBOS-SOF
6/14Fri
multi-stopLufthansa
18h 50mSOF-BOS
$1,011
6/7Fri
multi-stopUnited Airlines
19h 30mBOS-SOF
6/14Fri
multi-stopUnited Airlines
19h 43mSOF-BOS
$1,026
6/7Fri
multi-stopLufthansa
19h 30mBOS-SOF
6/14Fri
multi-stopLufthansa
18h 50mSOF-BOS
$1,039
6/7Fri
multi-stopUnited Airlines
14h 00mBOS-SOF
6/14Fri
multi-stopUnited Airlines
22h 57mSOF-BOS
$1,040
6/7Fri
multi-stopLufthansa
19h 55mBOS-SOF
6/16Sun
multi-stopLufthansa
18h 50mSOF-BOS
$1,041
6/7Fri
multi-stopITA Airways
37h 40mBOS-SOF
6/16Sun
multi-stopITA Airways
26h 40mSOF-BOS
$1,060
6/7Fri
multi-stopUnited Airlines
19h 55mBOS-SOF
6/16Sun
multi-stopUnited Airlines
18h 20mSOF-BOS
$1,070
6/7Fri
multi-stopLufthansa
19h 55mBOS-SOF
6/16Sun
multi-stopLufthansa
18h 50mSOF-BOS
$1,081

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Boston - Bulgaria Flights

Departure:

Boston (BOS)United States

Return flight deals:

Bulgaria - Boston

Cabin classes: