$467 Cheap Flights from Baltimore (BWI) to Sofia (SOF)

View $467 flight on Sun, Mar 8, 2026Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Sofia Airport (SOF)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Baltimore to Sofia (BWI-SOF)

Prices were available within the past 7 days and start at $467 for one-way flights and $598 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Tue, Oct 28 - Wed, Nov 5
BWI
Baltimore
SOF
Sofia
$598 Roundtrip, found 1 day ago
$598
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, Oct 28 from Baltimore to Sofia, returning Wed, Nov 5, priced at $598 found 1 day ago
British Airways
Sun, Mar 1 - Sat, Mar 28
BWI
Baltimore
SOF
Sofia
$648 Roundtrip, found 2 days ago
$648
Roundtrip
found 2 days ago
Select British Airways flight, departing Sun, Mar 1 from Baltimore to Sofia, returning Sat, Mar 28, priced at $648 found 2 days ago
British Airways
Sun, Feb 1 - Sat, Feb 28
BWI
Baltimore
SOF
Sofia
$648 Roundtrip, found 5 days ago
$648
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, Feb 1 from Baltimore to Sofia, returning Sat, Feb 28, priced at $648 found 5 days ago
British Airways
Sun, Nov 16 - Mon, Nov 24
BWI
Baltimore
SOF
Sofia
$651 Roundtrip, just found
$651
Roundtrip
just found
Select British Airways flight, departing Sun, Nov 16 from Baltimore to Sofia, returning Mon, Nov 24, priced at $651 just found
United
Sat, Nov 8 - Tue, Nov 18
BWI
Baltimore
SOF
Sofia
$665 Roundtrip, found 5 days ago
$665
Roundtrip
found 5 days ago
Select United flight, departing Sat, Nov 8 from Baltimore to Sofia, returning Tue, Nov 18, priced at $665 found 5 days ago
United
Mon, Jan 12 - Sat, Jan 24
BWI
Baltimore
SOF
Sofia
$666 Roundtrip, found 2 days ago
$666
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 12 from Baltimore to Sofia, returning Sat, Jan 24, priced at $666 found 2 days ago
United
Sat, Nov 8 - Tue, Nov 18
BWI
Baltimore
SOF
Sofia
$669 Roundtrip, found 5 days ago
$669
Roundtrip
found 5 days ago
Select United flight, departing Sat, Nov 8 from Baltimore to Sofia, returning Tue, Nov 18, priced at $669 found 5 days ago
KLM
Fri, Nov 14 - Thu, Nov 27
BWI
Baltimore
SOF
Sofia
$771 Roundtrip, just found
$771
Roundtrip
just found
Select KLM flight, departing Fri, Nov 14 from Baltimore to Sofia, returning Thu, Nov 27, priced at $771 just found
Air France
Mon, Dec 15 - Sun, Dec 21
BWI
Baltimore
SOF
Sofia
$916 Roundtrip, found 1 day ago
$916
Roundtrip
found 1 day ago
Select Air France flight, departing Mon, Dec 15 from Baltimore to Sofia, returning Sun, Dec 21, priced at $916 found 1 day ago
American Airlines
Sat, Sep 13 - Sat, Nov 22
BWI
Baltimore
SOF
Sofia
$1,194 Roundtrip, found 3 days ago
$1,194
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Sep 13 from Baltimore to Sofia, returning Sat, Nov 22, priced at $1,194 found 3 days ago

Alternative airports near Sofia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sofia Airport SOF. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $924
SOF
Sofia Airport
CheapestClosest
Average driving time to city center11 min
Flights from $924
Flights from Baltimore (BWI) to Sofia (SOF)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Sofia
Airlines serving
Air France, American Airlines, British Airways, KLM, United
Roundtrip price
$597
Distance
4892 mi

Baltimore to Sofia Flights

The cheapest times to fly from Baltimore to Sofia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Sofia are during the month of October. You can find some of the cheapest flights from Baltimore to Sofia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Sofia

Sunday is one of the best days to book for cheap flights from Baltimore to Sofia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to Sofia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Sofia in 2025. You can also book with separate airlines for your outbound and return journeys, from $467 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Sofia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Sofia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF) cost?
Snag a cheap one-way flight from $467 or cheap return flight from $598 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF)?
The cheapest month to fly from BWI to SOF is October, when demand is low. Off-peak season is usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest BWI to SOF flight.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF)?
Direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BWI to SOF?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF)?
To avoid possible delays on the Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF) route, fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF) last-minute?
Booking your flight from BWI to SOF right before your journey is usually more expensive. However, if you're flexible with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book a BWI to SOF flight and hotel package?
Booking a BWI to SOF flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our impressive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sofia Airport (SOF)?
Usually, it's possible to cancel or reschedule your BWI to SOF flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.