$383 Find Cheap Flights from St. Louis to Bulgaria - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Bulgaria departing on 8/10. 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

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Book Cheap St. Louis to Bulgaria Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Bulgaria 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 St. Louis to Bulgaria

Tue, Nov 10 - Thu, Nov 12
United Airlines Logo
8:33 am - 1:15 pm
STL
-
SOF
20h 42m
2 stops
United Airlines Logo
6:25 am - 3:26 pm
SOF
-
STL
41h 01m
2 stops
$776United Airlines
Tue, Nov 10 - Thu, Nov 12
United Airlines Logo
8:40 am - 1:15 pm
STL
-
SOF
20h 35m
2 stops
United Airlines Logo
2:05 pm - 3:26 pm
SOF
-
STL
33h 21m
2 stops
$777United Airlines
Wed, Dec 16 - Fri, Dec 25
United Airlines Logo
6:30 am - 1:15 pm
STL
-
SOF
22h 45m
2 stops
United Airlines Logo
2:05 pm - 11:09 pm
SOF
-
STL
17h 04m
2 stops
$846United Airlines
Wed, Sep 9 - Wed, Sep 16
Lufthansa Logo
12:59 pm - 12:10 pm
STL
-
SOF
15h 11m
2 stops
Lufthansa Logo
6:20 am - 1:25 pm
SOF
-
STL
15h 05m
1 stop
$847Lufthansa
Wed, Sep 9 - Wed, Sep 16
Lufthansa Logo
12:59 pm - 12:10 pm
STL
-
SOF
15h 11m
2 stops
Lufthansa Logo
6:10 am - 3:38 pm
SOF
-
STL
17h 28m
2 stops
$855Lufthansa
Wed, Sep 9 - Wed, Sep 16
Lufthansa Logo
3:30 pm - 6:05 pm
STL
-
SOF
18h 35m
1 stop
Lufthansa Logo
6:10 am - 3:38 pm
SOF
-
STL
17h 28m
2 stops
$865Lufthansa
Wed, Sep 9 - Wed, Sep 16
Lufthansa Logo
3:30 pm - 6:05 pm
STL
-
SOF
18h 35m
1 stop
Lufthansa Logo
6:20 am - 9:31 pm
SOF
-
STL
23h 11m
2 stops
$866Lufthansa
Wed, Sep 9 - Wed, Sep 16
Lufthansa Logo
3:30 pm - 6:05 pm
STL
-
SOF
18h 35m
1 stop
Lufthansa Logo
6:20 am - 1:25 pm
SOF
-
STL
15h 05m
1 stop
$867Lufthansa
Wed, Sep 9 - Wed, Sep 16
Lufthansa Logo
3:30 pm - 6:05 pm
STL
-
SOF
18h 35m
1 stop
Lufthansa Logo
6:20 am - 1:25 pm
SOF
-
STL
15h 05m
1 stop
$869Lufthansa
Wed, Dec 16 - Fri, Dec 25
Multiple Airlines Logo
4:05 pm - 3:15 pm
STL
-
SOF
15h 10m
2 stops
Multiple Airlines Logo
2:05 pm - 11:09 pm
SOF
-
STL
17h 04m
2 stops
$873Multiple Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Bulgaria flights

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

What is the cheapest month to fly from St. Louis to Bulgaria?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Bulgaria, 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 St. Louis to Bulgaria is October, when tickets cost $0 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $957 and $788 respectively.

Find deals

Good to know

Cheapest flight$383
Most popular time to fly with an average 41% increase in price.
Flight from St. Louis to Sofia

FAQs - booking Bulgaria flights

  • How does KAYAK find such low prices on flights from St. Louis to Bulgaria?

    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 St. Louis to Bulgaria.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Bulgaria?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Bulgaria 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 St. Louis to Bulgaria?

    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 St. Louis to Bulgaria 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 St. Louis to Bulgaria?

    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 St. Louis to Bulgaria up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from St. Louis to Bulgaria

Information on your arrival and departure airports

St. Louis (STL)