$321 Find Cheap Flights from Boston to Bulgaria - Compare and Save

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Cheap Flights from Boston to Bulgaria

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Sofia
Sofia1 stop$543
Varna
Varna1 stop$756
Sofia
Sofia1 stop$543
Varna
Varna1 stop$756
Booking Insights

Price, demand and travel trends for Boston to Bulgaria flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Boston to Bulgaria cheaper or more expensive than last year?

Fares from Boston to Bulgaria are running about 14% lower than they were around this time last year, averaging $705 round-trip.

What are the cheapest fares from Boston to Bulgaria right now?

The cheapest fares from Boston to Bulgaria on KAYAK in the last week were to Sofia (SOF) from $543 round-trip, and to Varna (VAR) from $756 round-trip.

What’s the cheapest month to fly from Boston to Bulgaria?

November is the cheapest time of year to fly, with average fares of $460. Prices are highest in June, when average flight costs increase to around $1,055.

When is the best time to book flights from Boston to Bulgaria?

Book your flights 20 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 39% compared to booking last-minute (within 2 weeks of departure).

Which airport in Bulgaria is the cheapest to fly to from Boston?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Bulgaria are:

• Sofia (SOF) from $746
• Varna (VAR) from $765
• Bourgas (BOJ) from $902

What’s the cheapest day to fly from Boston to Bulgaria?

Wednesday tends to be the cheapest day to fly from Boston to Bulgaria, while Thursday is the most expensive. Fares run about 32% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Boston to Bulgaria?

Data from the past 12 months shows it's cheapest to fly to Bulgaria during the afternoon with average prices of $707. The morning is the most expensive time to fly, with average prices of $909.

Key details for Boston to Bulgaria flights

Low season

December

Cheapest flight

$321
Beat the crowds with an average 40% drop in travelers.
The most popular month to fly with an average 209% increase in travelers.
One-way flight from Boston to Sofia

Your Boston to Bulgaria flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Boston to Bulgaria?

    Fares from Boston to Bulgaria are around their usual level right now. A round-trip under $512 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • How much should I budget for a flight from Boston to Bulgaria?

    Over the past 12 months, round-trip fares from Boston to Bulgaria have ranged from $512 to $973.

  • What are the main airports serving Bulgaria?

    Bulgaria has 3 airports. The three busiest are Sofia (SOF) (72% of arrivals), Varna (VAR) (16%) and Bourgas (BOJ) (13%).

  • What airlines fly nonstop from Boston to Bulgaria?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Boston to Bulgaria. One-stop options include:

    • Lufthansa
    • Turkish Airlines
    • Austrian Airlines

  • Which cabin classes are available on flights from Boston to Bulgaria?

    On flights from Boston to Bulgaria you can book Economy Class, Premium Economy Class or Business Class.

  • What are some popular landmarks in Bulgaria?

    KAYAK travelers' favorite landmarks in Bulgaria include:

    • Vasil Levski National Stadium
    • National Palace of Culture
    • Central Sofia Market Hall
    • Prince Alexander of Battenberg Square

Your guide to booking Boston to Bulgaria flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 20 weeks before your trip. KAYAK data shows fares in this window are around 39% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for November when flights are typically cheapest and avoid June when prices are at their highest.
  • Flying on Wednesday is usually the cheapest. Flights on Thursday cost about 32% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Sofia (SOF) is the cheapest airport to fly into from Boston. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Sofia, which is the most popular destination in Bulgaria. From there, it's easy to continue on to other popular destinations such as Varna, Bansko and Sunny Beach.

Reviews of the 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.
7.8
KLMOverall score based on 1580 reviews
8.4Crew
7.3Food
7.2Entertainment
7.8Boarding
7.7Comfort
Airline reviews

The flight itself was fine, food was expired and gross, staff were mostly amazing! KLM messed up rebooking for our first two flights that got cancelled and we almost didn’t make it to Amsterdam for an additional two days

4.0 OkayJessica, Sep 2026
Read more KLM reviews

The flight itself was fine, food was expired and gross, staff were mostly amazing! KLM messed up rebooking for our first two flights that got cancelled and we almost didn’t make it to Amsterdam for an additional two days

I think I previously submitted my feedback about flight lead Katherine in a different field by mistake. Please see those comments. Comments for Hyd to AMS are it was good. The flight lead and service met expectations for satisfactory high quality service but the flight lead did not stand out as exceptional as did the leads on the other two flights so I don’t remember anything specific one way or the other besides the fact I was satisfied.

Had to cancel and rebook, KLM connection was cancelled prior to departure, ended up flying to Munich on non-Delta carrier.

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

Pre-boarding seemed tom happen at the same time as Business Class - I thought the idea was to allow people who needed extra time to board without interference from other boarding types, but I guess that's how they do it at LAX.

The good: we liked fast boarding, the departure and arrival on-time. The not-so-good: The crew should learn from their sister-company Swiss with whom we took the flight to the US. Austrian onboard personnel need to smile more and provide a better service. Food was okay, there was the usual issue with “no more chicken” by the time they reach row X 😕. We did not understand why the crew collected trash so randomly and inadequately. We missed the free internet for messaging which was privided by Swiss as well. Hope this feedback helps.

They should be kind to the people Food is always plain pasta bread is from the fridge they don't even warm up Seat is so uncomfortable body hurts

I am very satisfied for choosing that Airlines! It was my first time but the everything went smoothly! Thank you!

This is truly the worst travel experience of my life. The UK ETA program had a technical failure, and I was stuck in limbo for 24 hours, unable to board my flight and unable to navigate anything in my itinerary. I had to rebook an entirely new flight and I’m now out doubled the money. Unconscionable.

OK, would prefer some meat for dinner, not just pasta although was tasty. There was only one dish, no choices

Flight delayed with no explanation. Boarding was confused (proceed to plane, go back to waiting area).

We have travelled on 13 December with Austrian Airlines from Yangon through Bangkok and Vienna to Varna. The first flight operated by Thai Airlines was nice and comfortable. I wouldn’t say the same thing about the next two flights which were operated directly by the Austrian Airlines. During our flight from Bangkok to Vienna:  > The service was very poor – serving of food and drinks was disorganized, late and not combined, the stewards were walking back and forth without doing anything substantial for the passengers. Even the morning breakfast was very late with a cup of coffee almost while landing (after a reminding).  > The food itself was OK-ish but for a 12-hour flight, there were no snacks/bites in between dinner and breakfast as it is with the other airlines.  > The cutlery was wooden, most probably recycling, but very unpleasant to eat with.  > The stewards were not rude but not friendly and/or helpful  > And also, half of the passengers had travel sets, others did not. The flight from Vienna to Varna was another surprise: firstly, the flight was late and secondly, they were serving only water free, even the coffee was paid, so were the snacks, but we had to pay to reserve seats. The whole experience is as if it was a low-cost airline. All in all, I wouldn’t recommend using the services of Austrian Airlines: the ticket prizes are quite the same as of the other carriers flying to this destination and you would have much pleasant time.

They never gave any meal during the flight. We’ve flown for years and then doing this now is ridiculous.

The flight was late. We accommodated other missed flights, and the plane was full of people, without space to store carry-on luggage. They lost our checked luggage for the entire flight and delivered it after two days.

When getting to our seats a blanket, headphones and pillow where there already. The food was very good and plentiful. I liked when they came around w/hot towels to freshen up with. Slippers, socks and an eye mask was a nice surprise. My husband and I have mobility issues and the transporters were absolutely wonderful and helpful w/the wheelchairs at each stop. Getting from one gate to the next they were a blessing.

The taxi drivers are very rude. Didn’t wait. They said you come in 5minutes or I leave. Did not leave any messages on front desk and they left. We have to hire new cabs in turkey.

Everything was good except for the seating arrangements. We could not get seats to be seated together with my wife. We’re unfortunately.

Could have been better. Bag rechecking could have been eliminated. Gate location and direction need to be clearly stated.

I flew Business with my daughter and son. The service, friendliness of the staff and the comfort of the fully flat beds were phenomenal. Would definitely fly Turkish again soon.

Very comfortable in business class. Excellent service. Good food. Smooth trip.

As a first time flyer with Turkish Airlines. My experience was very good due to the factor that there were to many passengers on the my first flight compared to my connecting flight. However, I know that nothing is perfect and all companies are trying to accommodate their passengers to the best way possible. I will always say, a FEW INCHES will go LONG WAY. That's something all airliners should consider, and not only the money aspect!!! A long time commitment is better than one time service! Thank you

My experience with Turkish airlines has been pretty good. I connected from Istanbul to Tirana Albania. One of my luggage’s didn’t come. Very disappointed with that, we had our year old grandson with us! Babiest things were in that bag . Hopefully I get the bag tomorrow or next day !

We were traveling first class. Checkin counter lady and her manager, both were in bad mood and did not treat us well about checking in the handbag. The gate agent took care of it right away. I travel Turkish twice a year in first class. No one has ever refused to check in the hand bag. Not sure, why this agent and her manager refused. Everything else was excellent.

The cabin crew was excellent. They were fully staffed and very helpful. The food on the fight was quite good for surpassing my expectations of “airline food“

Very disappointing that on an international business class flight they would not give me access to the lounge in Boston. They said it was because it was a codeshare flight. International business class should include lounge access regardless of codeshare.

Great, except the canon was so cold. Even the flight attendants put jackets on

The app logs you out right when you are boarding requiring all passwords and reservation number for the flight. Super annoying

The pre-order only approach for fresh food is really challenging

Flight was 2.5 late. Maybe not United’s fault but late none the less. We were late as well on the first leg. WiFi quit working with an hour left.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

It was Swiss. Our kosher meals were literally frozen solid and therefore inedible, and the crew didnt care.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

The flight was delayed, they didn’t even have water for the toilets or for drinks

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Flight was 1.5 hours late to depart so changed flights to Swiss Air.

Entertainment was good. Food was mediocre. Service was mediocre. New plane was smooth

Staff was great. Space in bathrooms was very good. Boarding went smoothly due to aisles. I would like more room in coach. 2 more inches would be helpful. Lost luggage was a big issue; more on the administrative side than flight related, but diminished the flight experience.

Flight was cancelled and I got rebooked with anther airline. Also had booked a direct flight and got a layover.

The seats are designed for 12 years old, but pretty uncomfortable for the average adulte!!

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...

The Lufthansa part was wonderful. The short connection flight was not.

Both flights were late for what appeared to be the airline’s not having the planes ready. Arrived over 6 hours late.

Seats were not the most comfortable and food options weren’t great but overall but everything else was excellent

More options for your flight from Boston to Bulgaria

Complete your trip to Bulgaria with a hotel stay or car rental