SOF - BOS

$433 Find Cheap Flights from Sofia to Boston - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$677
Typical prices: $707-$893
Multiple Airlines
Thu 11/1Thu 11/15
SOF - BOS • 3 stops
Cheapest one-way
$433
Typical prices: $430-$760
Multiple Airlines
Sun 10/21
SOF - BOS • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Sofia and Boston. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
22 weeks
in advance
Our data shows that travelers who book at least 22 weeks in advance save around 11% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 12% price drop
November
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Barcelona-El Prat (BCN)
Cheapest • Avg $572 (round-trip)
Vienna Intl (VIE)
Shortest trip • 11h 56m (one-way)
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Insights
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Flight Deals

Cheap Flights from Sofia to Boston (SOF-BOS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sofia to Boston

Sun, Nov 1 - Sun, Nov 15
Multiple Airlines Logo
4:00 pm - 5:50 pmSOF  Sofia-BOS Boston Logan Intl
32h 50m3 stops Belgrade Nikola Tesla Berlin Brandenburg Reykjavik Keflavik Intl
Multiple Airlines Logo
7:50 pm - 11:55 pmBOS  Boston Logan Intl-SOF Sofia
21h 05m2 stops Reykjavik Keflavik Intl Berlin Brandenburg
$677Multiple Airlines
Fri, Oct 9 - Tue, Oct 20
British Airways Logo
2:15 pm - 10:35 pmSOF  Sofia-BOS Boston Logan Intl
15h 20m1 stop London Heathrow
British Airways Logo
9:50 pm - 8:30 pmBOS  Boston Logan Intl-SOF Sofia
15h 40m1 stop London Heathrow
$696British Airways
Fri, Oct 9 - Sat, Oct 17
British Airways Logo
2:15 pm - 10:35 pmSOF  Sofia-BOS Boston Logan Intl
15h 20m1 stop London Heathrow
British Airways Logo
9:50 pm - 8:10 pmBOS  Boston Logan Intl-SOF Sofia
15h 20m1 stop London Heathrow
$699British Airways
Sun, Nov 8 - Mon, Nov 23
Turkish Airlines Logo
9:30 am - 6:05 pmSOF  Sofia-BOS Boston Logan Intl
15h 35m1 stop Istanbul
Turkish Airlines Logo
8:00 pm - 8:50 pmBOS  Boston Logan Intl-SOF Sofia
17h 50m1 stop Istanbul
$727Turkish Airlines
Tue, Nov 24 - Fri, Feb 26
Turkish Airlines Logo
4:00 pm - 6:05 pmSOF  Sofia-BOS Boston Logan Intl
33h 05m1 stop Istanbul
Turkish Airlines Logo
8:00 pm - 3:10 pmBOS  Boston Logan Intl-SOF Sofia
12h 10m1 stop Istanbul
$727Turkish Airlines
Mon, Nov 2 - Mon, Nov 16
Turkish Airlines Logo
4:00 pm - 7:05 pmSOF  Sofia-BOS Boston Logan Intl
34h 05m1 stop Istanbul
Turkish Airlines Logo
8:00 pm - 8:50 pmBOS  Boston Logan Intl-SOF Sofia
17h 50m1 stop Istanbul
$731Turkish Airlines
Tue, Dec 1 - Mon, Mar 1
Lufthansa Logo
6:25 am - 1:45 pmSOF  Sofia-BOS Boston Logan Intl
14h 20m1 stop Frankfurt am Main
Lufthansa Logo
7:35 pm - 10:55 pmBOS  Boston Logan Intl-SOF Sofia
20h 20m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss
$787Lufthansa
Tue, Nov 24 - Fri, Feb 26
Lufthansa Logo
6:25 am - 1:45 pmSOF  Sofia-BOS Boston Logan Intl
14h 20m1 stop Frankfurt am Main
Lufthansa Logo
2:16 pm - 1:15 pmBOS  Boston Logan Intl-SOF Sofia
15h 59m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss
$788Lufthansa
Tue, Oct 13 - Wed, Dec 9
United Airlines Logo
2:10 pm - 8:10 pmSOF  Sofia-BOS Boston Logan Intl
13h 00m1 stop Frankfurt am Main
United Airlines Logo
2:36 pm - 1:15 pmBOS  Boston Logan Intl-SOF Sofia
15h 39m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss
$806United Airlines
Thu, Oct 15 - Mon, Dec 7
United Airlines Logo
2:10 pm - 8:10 pmSOF  Sofia-BOS Boston Logan Intl
13h 00m1 stop Frankfurt am Main
United Airlines Logo
8:40 pm - 10:55 pmBOS  Boston Logan Intl-SOF Sofia
19h 15m1 stop Munich Franz Josef Strauss
$806United Airlines
Booking Insights

Price, demand and travel trends for Sofia to Boston flights

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

What's the cheapest day of the week to fly from Sofia to Boston?

Wednesday is the cheapest day of the week to fly from Sofia to Boston, it is 10% cheaper than the average day. Saturday is the most expensive day with flight prices 21% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • November is the cheapest month to fly from Sofia to Boston at $687 round-trip.
  • May ($961) and February ($852) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 39% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Sofia to Boston the cheapest?

Flights from Sofia to Boston are cheapest 22 weeks before departure. Booking in this window typically costs about 11% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Sofia to Boston flights

Low season

February

Cheapest flight

$433
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Sofia to Boston

When to book flights from Sofia to Boston

Are your dates flexible? Find out the best times to travel from Sofia to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Sofia to Boston flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Sofia to Boston?

    Flights from Sofia to Boston usually depart from Sofia (SOF) and arrive at Boston Logan Intl (BOS).

  • What cabin classes can I book on flights from Sofia to Boston?

    Three cabin classes are available on flights from Sofia to Boston:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Sofia to Boston pass through?

    One-stop flights from Sofia to Boston most commonly connect through:

    • Istanbul (IST) - 39% of one-stop connections
    • Amsterdam Schiphol (AMS) - 19% of one-stop connections
    • Vienna Intl (VIE) - 14% of one-stop connections
    • Frankfurt am Main (FRA) - 14% of one-stop connections

    Istanbul (IST) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Sofia to Boston?

    Yes. Being flexible with your travel dates can save you up to 26% on the Sofia to Boston route. Wednesday is the cheapest departure day at $709 round-trip on average, while Saturday is the most expensive at $953, a difference of $244. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Boston?

    Some of the most popular sights in Boston are Fenway Park, TD Garden and South Station. These are among the most viewed places in Boston on KAYAK.

  • How expensive are last-minute Sofia to Boston flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 1% below the route average of $784. Booking late can sometimes save money on this route, but inventory is limited.

  • How long is a flight from Sofia to Boston?

    A nonstop flight from Sofia to Boston takes 0h 00m, covering 4,521 miles.

  • Do I need a passport to fly from Sofia to Boston?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Sofia to Boston looking right now?

    One-way fares from Sofia to Boston are currently lower than usual. Average one-way flight prices are about $532, which is 13% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Sofia to Boston?

    Flying via Vienna Intl (VIE) gives the shortest average 1-stop total travel time at 11h 56m, compared with 12h 47m via Amsterdam Schiphol (AMS) and 12h 54m via Frankfurt am Main (FRA).

  • What is the time difference between Sofia and Boston?

    Boston is 7 hours behind Sofia (Eastern Time vs Eastern European Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Boston Logan Intl Airport (BOS)?

    Boston Logan Intl Airport (BOS) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
    • Dollar
    • Hertz
    • Budget
    • Thrifty
    • Sixt

  • How much should I expect to pay for a Sofia to Boston flight?

    Round-trip flights from Sofia to Boston range from $707 to $893, with an average of $784 over the past 12 months. Anything below $707 counts as a good deal.

Your guide to booking Sofia to Boston flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Saturday. On this route, Wednesday flights average $709 - about $244 less than Saturday (26% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 22 weeks before you fly. On this route, that window historically saves about 11% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Sofia to Boston trip for November. Fares historically average $687 round-trip in that month - typically $274 less than the most expensive month, which is May (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Boston Logan Intl Airport.
    - Embassy Suites by Hilton Boston at Logan Airport
    - Hilton Garden Inn Boston Logan Airport
    - Hilton Boston Logan Airport

More options for your flight from Sofia to Boston

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

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