$402 Find Cheap Flights from Sofia to Massachusetts

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sofia to Massachusetts departing on 4/27. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Massachusetts

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Massachusetts.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Massachusetts.
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Flight Deals

Book Cheap Sofia to Massachusetts Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sofia to Massachusetts that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sofia to Massachusetts

Sun, Nov 23 - Mon, Dec 8
Lufthansa Logo
2:00 pm - 6:35 pmSOF-BOS
11h 35m1 stop
Lufthansa Logo
4:20 pm - 1:25 pmBOS-SOF
14h 05m1 stop
$652Lufthansa
Find Deal
Sun, Nov 23 - Mon, Dec 8
Lufthansa Logo
6:10 am - 1:25 pmSOF-BOS
14h 15m1 stop
Lufthansa Logo
2:15 pm - 1:15 pmBOS-SOF
16h 00m2 stops
$656Lufthansa
Find Deal
Sun, Nov 23 - Mon, Dec 8
United Airlines Logo
6:10 am - 2:52 pmSOF-BOS
15h 42m2 stops
United Airlines Logo
7:07 pm - 6:20 pmBOS-SOF
16h 13m2 stops
$660United Airlines
Find Deal
Fri, Dec 19 - Fri, Jan 23
Lufthansa Logo
6:10 am - 1:25 pmSOF-BOS
14h 15m1 stop
Lufthansa Logo
8:40 pm - 6:20 pmBOS-SOF
14h 40m1 stop
$729Lufthansa
Find Deal
Fri, Dec 19 - Fri, Jan 23
Lufthansa Logo
6:10 am - 1:25 pmSOF-BOS
14h 15m1 stop
Lufthansa Logo
2:20 pm - 1:15 pmBOS-SOF
15h 55m2 stops
$733Lufthansa
Find Deal
Fri, Dec 26 - Fri, Jan 2
United Airlines Logo
7:55 am - 2:05 pmSOF-BOS
13h 10m1 stop
United Airlines Logo
5:30 am - 1:35 pmBOS-SOF
25h 05m2 stops
$734United Airlines
Find Deal
Fri, Dec 26 - Fri, Jan 2
United Airlines Logo
7:55 am - 11:54 pmSOF-BOS
22h 59m2 stops
United Airlines Logo
5:30 am - 1:35 pmBOS-SOF
25h 05m2 stops
$740United Airlines
Find Deal
Fri, Dec 19 - Fri, Jan 23
Lufthansa Logo
6:05 am - 1:25 pmSOF-BOS
14h 20m2 stops
Lufthansa Logo
2:20 pm - 1:15 pmBOS-SOF
15h 55m2 stops
$748Lufthansa
Find Deal
Fri, Mar 27 - Tue, Mar 31
KLM Logo
7:00 am - 7:55 pmSOF-BOS
18h 55m1 stop
KLM Logo
6:40 pm - 2:00 pmBOS-SOF
12h 20m1 stop
$752KLM
Find Deal
Fri, Mar 27 - Tue, Mar 31
KLM Logo
7:00 am - 2:20 pmSOF-BOS
13h 20m1 stop
KLM Logo
4:45 pm - 2:00 pmBOS-SOF
14h 15m1 stop
$755KLM
Find Deal
Booking Insights

KAYAK's insights & trends for Sofia to Massachusetts flights

Get data-powered insights and trends into flights from Sofia to Massachusetts to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Sofia to Massachusetts?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sofia to Massachusetts, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sofia to Massachusetts is January, when tickets cost $592 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of round-trip tickets is $803 and $792 respectively.

What’s the cheapest day of the week to fly from Sofia to Massachusetts?

The average price of all round-trip flights from Sofia to Massachusetts clicked on KAYAK for each day over the last 12 months.

When flying from Sofia to Massachusetts, you should consider leaving on a Thursday and avoid Sundays if you are looking for the best rates. For your return to Sofia, you’ll find the best rates on Tuesdays and the most expensive ones on Fridays.

How far in advance should I book a flight from Sofia to Massachusetts?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sofia to Massachusetts, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Sofia to Massachusetts, you should book around 5 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$402
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Sofia to Boston

FAQs - booking Massachusetts flights

  • How does KAYAK find such low prices on flights from Sofia to Massachusetts?

    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 Sofia to Massachusetts.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Sofia to Massachusetts 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 Sofia to Massachusetts?

    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 from Sofia to Massachusetts with an airline and back with another airline.

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

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

  • What is the cheapest time of day to fly to Massachusetts?

    The cheapest time of day to fly to Massachusetts is generally in the evening, when round-trip flights cost $596 on average. Morning departures are around 19% more expensive than evening flights, on average. The most expensive time of day to fly to Massachusetts is generally in the morning, which is peak travel time and where the average cost of a ticket is $709.

Reviews of the top 5 airlines serving from Sofia to Massachusetts

 
See real verified KAYAK customer reviews for airlines flying from Sofia to Massachusetts. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sofia to Massachusetts? 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
KLMOverall score based on 1410 reviews
7.7Comfort
8.4Crew
7.8Boarding
7.3Food
7.1Entertainment
Airline reviews

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

2.0 MediocreElizabeth, Oct 2025CDG - AMS
Read more KLM reviews

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

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.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

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!

The service was great. However the lounge only gets passing grade

I don’t like that an equipment change caused my seat to change from 23A to 44A. The boarding was also delayed. The crew were excellent, however and very attentive. The food was not bad.

Worst airlines either. First leg was delayed because of crew not available. My connection was missed so they booked me automatically the next day! But, impossible to get anyone on site, web site does not let me access my reservation anymore, confirmed by useless agents over the phone. My 2-leg trip with part in business class arriving at 4:10pm ends up in an awful 3-leg arriving at 9pm the next day with no way to even choose the seats and of course at the very end of the plane. I can understand problems arrive but the way Air France handle it is just unacceptable. You are on your own. Apparently getting you to your destination is the only thing they consider their duty. The customer experience and fatigue is none of their concern. And I have a status with them. I will reconsider my priorities when flying with Air France and encourage everyone to do the same.

Our flight crew were terrific. And they handle a difficult passenger with finesse.

3 hour delay but out of their control. App said I get vouchers but when I applied for them, they were nowhere to be found in my account

I don't understand the concept of paying to get your personal luggage onboard and then asked to check it in.... either sell the space or don't, its a hassle to carry those all through the airport just to make a check in at the last minute.

The food was great and the service and attitude was amazing!!

It was a great experience. The only thing I would have changed was that the bathrooms were never cleaned and they got very dirty.

It was an OK flight with below mediocre service by their flight attendants

My experience was good overall, the quality of the food really decreased! There used to be a choice between meat and fish now it’s between chicken and pasta! In the choices of entertainment meditation has been added which is very good. Soft chair workout to improve blood circulation and avoid phlebitis should be added.

The only reason the overall rating wasn't "excellent" was due to problems in claiming luggage. The bags are delivered to the main area (Cinta 35) for domestic passengers, but to a DIFFERENT ROOM for international arrivees. After waiting 30 minutes, someone (who didn't appear to be from Air France or the airport) told us to go to another area. There we found our bags, which appeared to have been awaiting us for a while. We had to go through a bag check before leaving the airport. If we had been alerted to this possibility, or better yet, been to go directly to Cinta 34, we could have eliminated quite a bit of waiting.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Great crew, excellent landing, good food. Over all great experience. Thank you!

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

This flight leg was fantastic - super comfortable and a great selection of things to watch on the TV. Staff were excellent, really above and beyond.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

Excellent food and service on my international flight. Most notable is the food provided by Turkish even for coach passengers is very good.

They can my date of travel and let me standard in Istanbul for three days stop over and only pay for one day in a hotel with only one breakfast for three days.

the flight was cancelled and I was rebooked twice, once 26 hours later, then another 24 hours later. In total the flight was delayed for 40 hours. Never again will I use kayak or Turkish Airlines for my travel.

Worst experience with boarding once we left the wheel chair even traveling business we had to wait with all the crowd for the bus to take us to the plane then climb the stairs with our bags When you pay extra for comfort and convenience and you don’t get any is disappointing

Food is very turkish. No regard for other natinalities taste and preference. The entertainment can be improved- it was the same menu on 10/8/25 and 10/25/25. The boarding is the worst in the airline industry- I suggest you ask your staff to and watch how other airlines do it.

The best airline for international travel in terms of value you get in business class (service/cost)

I liked the overall flight experience. However, Turkish officials could do a better job at guiding non-Turkish speakers to their connecting flight gates in such a huge & vast airport.

Very small and cramped aisles and seats. Food was poor but the fresh hot roll and hummus was good. No cans of soda given but they had small bottles of water. Crew was nice and pleasant and kept bathroom clean.

We couldn’t fly to Chicago on our booked flight. The flight was overbooked.

Small seat space for 13 hours flight, they charged for baggage , very bad quality of food,

Airline food is airline food, but the plane was wonderful and the seating comfort outstanding. One of my best flights in quite a while.

Crew was outstanding, helpful and friendly. Food is deteriorating. The snack at the end of the flight was not good, a greasy moosh of toast cheese snd other unidentifiable ingredients. Coming from Germany a pretzl with butter would have been better. Entertainment had a great selection.

Smooth flight with enough time for connection. Ran out of meal options. In-flight and gate staff were friendly and helpful. Good service overall.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Give yourself over 2+ hours layover because if flight is slighlty delayed and you miss your connection, Lufthansa will do nothing for you

We would have missed our connection from Munich to Boston but we had a van outside the plan that wisked us to our terminal. Much appreciated and we didn’t even realize that Lufthansa had done this until the announcement on disembarkation. Well organized airline! Will definitely fly Lufthansa again!!!

Everything went well. I will fly with Lufthansa again. And use Kayak whenever I book flights

Bought a seat in a flight that got changed out so ended up paying for a seat I would have had if I hadn't paid.

Food was poor quality and the screens for entertainment didn’t work properly

Everything you need to know for your flight from Sofia to Massachusetts

Information on your arrival and departure airports