Which airports can I use when flying from St. Louis to Sofia?

Flights from St. Louis to Sofia usually depart from Lambert-St Louis (STL) and arrive at Sofia (SOF).

What cabin classes can I book on flights from St. Louis to Sofia?

Only Economy Class is available on flights from St. Louis to Sofia.

Which airports do connecting flights from St. Louis to Sofia pass through?

Most connecting flights from St. Louis to Sofia pass through Frankfurt am Main (FRA), which handles 100% of one-stop traffic on this route.

Can I save money by using flexible dates for flights from St. Louis to Sofia?

Yes. Flexible dates can save you up to 34% on flights from St. Louis to Sofia. Saturday is the cheapest departure day at $811 round-trip on average, while Tuesday is the most expensive at $1,213, a difference of $402. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

What popular places can I visit in Sofia?

Some of the most popular sights in Sofia are Vasil Levski National Stadium, National Palace of Culture and Central Sofia Market Hall. These are among the most viewed places in Sofia on KAYAK.

How long is a flight from St. Louis to Sofia?

A nonstop flight from St. Louis to Sofia takes 00m, covering 5,444 miles.

Do I need a passport to fly from St. Louis to Sofia?

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.

Have flight prices from St. Louis to Sofia changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $924 to $2,644. That means the highest observed fare was about 3x higher than the lowest one.

What is the time difference between St. Louis and Sofia?

Sofia is 7 hours ahead of St. Louis (Eastern European Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Sofia Airport (SOF)?

Sofia Airport (SOF) hosts 5 major car rental companies, with daily rates averaging $21 for economy cars. Top options include: • MEXRENTACAR • NU Car • Top Rent a Car - Bulgaria • Priceless • Easyrent

How much should I expect to pay for a St. Louis to Sofia flight?

Round-trip flights from St. Louis to Sofia range from $792 to $1,101, with an average of $879 over the past 12 months. Anything below $792 counts as a good deal.

How much is a round-trip flight from St. Louis to Sofia?

Round-trip flights from St. Louis to Sofia typically range from $792 to $1,101. The lowest price found in the past 5 days was $924, on United Airlines.

What’s the cheapest month to fly from St. Louis to Sofia?

•January is the cheapest month to fly from St. Louis to Sofia at $528 round-trip. •December ($1,264) and June ($1,232) are the most expensive months. •The price difference between flying in the cheapest and most expensive months is 139% on average. This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Which airline is the cheapest to fly from St. Louis to Sofia?

United Airlines ($924) and Lufthansa ($1,301) are the cheapest airlines to fly round-trip from St. Louis to Sofia according to KAYAK data over the last 5 days.

What is the cheapest layover airport when flying from St. Louis to Sofia?

Flights via Frankfurt am Main (FRA) offer the most affordable fares, with an average round-trip price of $926. Based on KAYAK data over the past 3 months.

When flying from St. Louis to Sofia which airport offers the shortest layover?

Frankfurt am Main (FRA) had the shortest average connection time for St. Louis to Sofia layovers at 9h 27m over the past 3 months.

$924 CHEAP FLIGHTS from St. Louis to Sofia (STL - SOF)

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$924

Typical prices: $792-$1,101

United Airlines

Mon 12/10Mon 12/17

STL - SOF • 2 stops

Nonstop flights

Not available

There are currently no direct flights between St. Louis and Sofia. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

January

Cheapest • 40% price drop

May

Most popular

Good to know

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Sofia!

Flight Deals

Cheap Flights from St. Louis to Sofia (STL-SOF)

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

Round-trip

One-way

Recent round-trip flight deals from St. Louis to Sofia

Thu, Dec 10 - Thu, Dec 17

8:40 am - 10:55 pmSTL Lambert-St Louis-SOF Sofia

30h 15m2 stops Denver Intl Munich Franz Josef Strauss

2:10 pm - 3:26 pmSOF Sofia-STL Lambert-St Louis

33h 16m2 stops Frankfurt am Main Toronto Pearson Intl

$924United Airlines

Thu, Dec 10 - Thu, Dec 17

8:40 am - 10:55 pmSTL Lambert-St Louis-SOF Sofia

30h 15m2 stops Denver Intl Munich Franz Josef Strauss

2:10 pm - 1:45 pmSOF Sofia-STL Lambert-St Louis

31h 35m1 stop Frankfurt am Main

$1,036United Airlines

Mon, Dec 28 - Tue, Jan 5

9:35 am - 1:15 pmSTL Lambert-St Louis-SOF Sofia

19h 40m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

12:35 pm - 5:13 pmSOF Sofia-STL Lambert-St Louis

36h 38m2 stops Vienna Intl Chicago O'Hare Intl

$1,059Multiple Airlines

Mon, Jan 11 - Thu, Jan 14

8:30 am - 1:15 pmSTL Lambert-St Louis-SOF Sofia

20h 45m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

6:25 am - 10:30 pmSOF Sofia-STL Lambert-St Louis

24h 05m2 stops Frankfurt am Main Houston George Bush Intcntl

$1,093United Airlines

Thu, Dec 10 - Thu, Dec 17

9:40 am - 1:25 pmSTL Lambert-St Louis-SOF Sofia

19h 45m3 stops Chicago O'Hare Intl Toronto Pearson Intl Frankfurt am Main

6:00 am - 3:26 pmSOF Sofia-STL Lambert-St Louis

41h 26m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$1,160Multiple Airlines

Wed, Dec 16 - Fri, Dec 25

1:18 pm - 6:00 pmSTL Lambert-St Louis-SOF Sofia

20h 42m2 stops Chicago O'Hare Intl Vienna Intl

2:10 pm - 11:38 pmSOF Sofia-STL Lambert-St Louis

17h 28m2 stops Frankfurt am Main Chicago O'Hare Intl

$1,201Multiple Airlines

Wed, Dec 16 - Fri, Dec 25

11:00 am - 10:55 pmSTL Lambert-St Louis-SOF Sofia

27h 55m2 stops Newark Munich Franz Josef Strauss

2:10 pm - 11:38 pmSOF Sofia-STL Lambert-St Louis

17h 28m2 stops Frankfurt am Main Chicago O'Hare Intl

$1,301Lufthansa

Thu, Dec 10 - Thu, Dec 17

9:40 am - 1:25 pmSTL Lambert-St Louis-SOF Sofia

19h 45m3 stops Chicago O'Hare Intl Toronto Pearson Intl Frankfurt am Main

6:25 am - 7:02 pmSOF Sofia-STL Lambert-St Louis

20h 37m3 stops Frankfurt am Main Toronto Pearson Intl Chicago O'Hare Intl

$1,303Air Canada

Wed, Dec 16 - Fri, Dec 25

6:55 pm - 6:20 pmSTL Lambert-St Louis-SOF Sofia

15h 25m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

2:10 pm - 11:38 pmSOF Sofia-STL Lambert-St Louis

17h 28m2 stops Frankfurt am Main Chicago O'Hare Intl

$1,380Lufthansa

Wed, Dec 16 - Fri, Dec 25

10:50 am - 1:25 pmSTL Lambert-St Louis-SOF Sofia

18h 35m3 stops Chicago O'Hare Intl Toronto Pearson Intl Frankfurt am Main

2:10 pm - 12:26 pmSOF Sofia-STL Lambert-St Louis

30h 16m3 stops Frankfurt am Main Toronto Pearson Intl Chicago O'Hare Intl

$1,411Air Canada

Booking Insights

Price, demand and travel trends for St. Louis to Sofia flights

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

Prices

Airlines

Layovers

How much is a round-trip flight from St. Louis to Sofia? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Sofia departing in december.
What’s the cheapest month to fly from St. Louis to Sofia? KAYAK internal proprietary data takes all prices for each month over the last 12 months for round-trip flights from St. Louis to Sofia, removes the top 0.1% to account for outliers and then takes the median of all values for each month.: •January is the cheapest month to fly from St. Louis to Sofia at $528 round-trip.
•December ($1,264) and June ($1,232) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 139% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Low season	February
High season	May
Cheapest flight	$924

Beat the crowds with an average 81% drop in travelers.

The most popular month to fly with an average 101% increase in travelers.

Round-trip flight from St. Louis to Sofia

When to book flights from St. Louis to Sofia

Are your dates flexible? Find out the best times to travel from St. Louis to Sofia based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from St. Louis to Sofia?
Only Economy Class is available on flights from St. Louis to Sofia.
How long is a flight from St. Louis to Sofia?
A nonstop flight from St. Louis to Sofia takes 00m, covering 5,444 miles.
Do I need a passport to fly from St. Louis to Sofia?
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 much should I expect to pay for a St. Louis to Sofia flight?
Round-trip flights from St. Louis to Sofia range from $792 to $1,101, with an average of $879 over the past 12 months. Anything below $792 counts as a good deal.
Have flight prices from St. Louis to Sofia changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $924 to $2,644. That means the highest observed fare was about 3x higher than the lowest one.
What car rental options are available at Sofia Airport (SOF)?
Sofia Airport (SOF) hosts 5 major car rental companies, with daily rates averaging $21 for economy cars. Top options include:

• MEXRENTACAR
• NU Car
• Top Rent a Car - Bulgaria
• Priceless
• Easyrent
Which airports can I use when flying from St. Louis to Sofia?
Flights from St. Louis to Sofia usually depart from Lambert-St Louis (STL) and arrive at Sofia (SOF).
Which airports do connecting flights from St. Louis to Sofia pass through?
Most connecting flights from St. Louis to Sofia pass through Frankfurt am Main (FRA), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from St. Louis to Sofia?
Yes. Flexible dates can save you up to 34% on flights from St. Louis to Sofia. Saturday is the cheapest departure day at $811 round-trip on average, while Tuesday is the most expensive at $1,213, a difference of $402.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
What is the time difference between St. Louis and Sofia?
Sofia is 7 hours ahead of St. Louis (Eastern European Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Sofia?
Some of the most popular sights in Sofia are Vasil Levski National Stadium, National Palace of Culture and Central Sofia Market Hall. These are among the most viewed places in Sofia on KAYAK.

If your dates are flexible, aim for a Saturday departure and avoid flying on Tuesday. On this route, Saturday flights average $811, about $402 less than Tuesday fares (33% savings) based on the last 12 months.
If you can choose when to travel, plan your St. Louis to Sofia trip for January. Fares historically average $528 round-trip in that month - typically $736 less than the most expensive month, which is December (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Sofia Airport.

• Hotel Premier Airport Sofia
• ibis Sofia Airport
• Hotel Consul

More options for your flight from St. Louis to Sofia

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Origins

Other destinations

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

Car rentals in Sofia

Hotels in Sofia

Vacations in Sofia

STL - SOF

$924 Find Cheap Flights from St. Louis to Sofia - Compare and Save

Everything you should know

Cheap Flights from St. Louis to Sofia (STL-SOF)

Recent round-trip flight deals from St. Louis to Sofia

Recent one-way flight deals from St. Louis to Sofia

Price, demand and travel trends for St. Louis to Sofia flights

How much is a round-trip flight from St. Louis to Sofia?

What’s the cheapest month to fly from St. Louis to Sofia?

Which airline is the cheapest to fly from St. Louis to Sofia?

What is the cheapest layover airport when flying from St. Louis to Sofia?

When flying from St. Louis to Sofia which airport offers the shortest layover?

Key details for St. Louis to Sofia flights

Low season

High season

Cheapest flight

When to book flights from St. Louis to Sofia

Your St. Louis to Sofia flight questions, answered

Your guide to booking St. Louis to Sofia flights

More options for your flight from St. Louis to Sofia

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

Information on your arrival and departure airports

Cabin class types available on flights from St. Louis to Sofia

Find direct flights to and from St. Louis and Sofia

Flights from domestic origins to Sofia

Flights to other popular destinations