Cheap flights from Boston to Sofia from $253
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Sofia departing on 3/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Boston to Sofia
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
KLM flights from Boston to Sofia
Our best KLM deals on Boston to Sofia flight tickets
United Airlines flights from Boston to Sofia
Our best United Airlines deals on Boston to Sofia flight tickets
See travel insights to Sofia from
How to get the cheapest flight ticket from Boston to Sofia
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Sofia?
The cheapest month to fly to Sofia from Boston is in October. Flight prices, which tend to average around $575, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Sofia from Boston during November instead. Flights to Sofia in November, while not as cheap as those in October, still average around $666.
What is the cheapest day to depart on your flight to Sofia?
According to our data, Tuesday is the cheapest day to fly to Sofia from Boston. The lowest ticket price found for a Tuesday departure recently was $843. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Boston to Sofia on a Friday will generally be more expensive and average around $997. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Sofia?
In the evening is the cheapest time of day to fly from Boston to Sofia when you can find flight prices for as low as $816. Flying to Sofia in the evening is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Sofia, so prices are often more expensive at around $1,022 per ticket.
How far in advance should I book a flight to Sofia?
You are more likely to see cheaper flights to Sofia from Boston when booking 20 weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $856 when searching 20 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Boston for as low as $794 on momondo.
What is the cheapest airline that flies from Boston Logan Intl to Sofia?
SWISS, Air Canada, and ITA Airways are the most popular carriers operating from Boston Logan Intl to Sofia
What airlines fly to Sofia?
Lufthansa, Turkish Airlines and Austrian Airlines are the top three most popular airlines that fly to Sofia from Boston according to our data. Lufthansa is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 8 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.
When to book flights from Boston to Sofia
Cheap Boston to Sofia (BOS to SOF) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Boston to Sofia
How far is Boston Logan Intl to Sofia by plane?
Boston Logan Intl and Sofia are 4519.3 mi apart from one another. In terms of flight time, this usually takes a little over 10h 25m.
When did momondo last update prices for flights from Boston Logan Intl Airport to Sofia Airport?
Prices for flights from Boston Logan Intl Airport to Sofia Airport were last updated today.
How many operators does momondo search for flights from Boston Logan Intl Airport to Sofia Airport?
As of March 2025, there are 8 operators available to choose from for flights from Boston Logan Intl Airport to Sofia Airport.
How old do you have to be to fly from Boston Logan Intl Airport to Sofia Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Sofia Airport.
What documentation or ID do you need to fly to Sofia Airport?
The travel and health documents you'll need for your trip to Sofia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sofia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Boston to Sofia?
Based on momondo bookings for flights between Boston and Sofia, the leading airline is Lufthansa, making up 45% of the total bookings. Other popular airlines include Turkish Airlines with 19%, Austrian Airlines with 10%, and United Airlines with 10%.
Best airlines flying from Boston to Sofia
Compare and see reviews for airlines that fly from Boston to Sofia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $515 | Free Cancellation | Rating 7.3 3,745 reviews | |||
| PriceFrom $550 | Free Cancellation | Rating 6.6 6,712 reviews | |||
| PriceFrom $558 | Free Cancellation | Rating 7.5 1,569 reviews | |||
| PriceFrom $637 | Free Cancellation | Rating 7.4 8,605 reviews | |||
| PriceFrom $658 | Free Cancellation | Rating 7.8 1,318 reviews | |||
| PriceFrom $689 | Free Cancellation | Rating 6.7 6,950 reviews | |||
| PriceFrom $742 | Free Cancellation | Rating 6.7 945 reviews | |||
| PriceFrom $754 | Free Cancellation | Rating 7.5 769 reviews |
Traveling to a place near Sofia?
Book flights to Sofia if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Boston to Sofia?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boston to Sofia. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Boston to Sofia with flexible booking policies on momondo?
Flights from Boston to Sofia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Boston to Sofia?
Once you have performed a search for Boston to Sofia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Boston to Sofia right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Sofia from Boston. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.