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Cheap flights from St. Louis to Bulgaria from $854

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Bulgaria departing on 12/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
1:08 pm - 11:50 am
STL
-
SOF
14h 42m
2 stops
Austrian Airlines Logo
7:55 am - 5:08 pm
SOF
-
STL
17h 13m
2 stops
$854Austrian Airlines
Wed, Dec 16 - Fri, Dec 25
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
$869Lufthansa
Wed, Sep 9 - Wed, Sep 16
Lufthansa Logo
3:30 pm - 6:40 pm
STL
-
SOF
19h 10m
2 stops
Lufthansa Logo
6:20 am - 1:25 pm
SOF
-
STL
15h 05m
1 stop
$879Lufthansa
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
4:40 pm - 6:40 pm
STL
-
SOF
18h 00m
2 stops
United Airlines Logo
6:20 am - 1:25 pm
SOF
-
STL
15h 05m
1 stop
$886United Airlines
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
4:40 pm - 6:40 pm
STL
-
SOF
18h 00m
2 stops
United Airlines Logo
6:20 am - 6:41 pm
SOF
-
STL
20h 21m
2 stops
$890United Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
1:00 pm - 10:55 pm
STL
-
SOF
25h 55m
2 stops
Multiple Airlines Logo
2:10 pm - 3:26 pm
SOF
-
STL
33h 16m
2 stops
$896Multiple Airlines
Wed, Nov 11 - Sat, Nov 28
Multiple Airlines Logo
3:40 pm - 6:10 pm
STL
-
SOF
18h 30m
1 stop
Multiple Airlines Logo
2:10 pm - 3:26 pm
SOF
-
STL
33h 16m
2 stops
$908Multiple Airlines
Wed, Nov 11 - Sat, Nov 28
Air Canada Logo
11:15 am - 1:25 pm
STL
-
SOF
18h 10m
3 stops
Air Canada Logo
6:25 am - 7:23 pm
SOF
-
STL
20h 58m
3 stops
$933Air Canada
Wed, Nov 11 - Sat, Nov 28
Air Canada Logo
9:40 am - 1:25 pm
STL
-
SOF
19h 45m
3 stops
Air Canada Logo
2:10 pm - 10:46 am
SOF
-
STL
28h 36m
3 stops
$1,099Air Canada
Wed, Dec 16 - Fri, Dec 25

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Lufthansa flights from St. Louis to Bulgaria

Our best Lufthansa deals on St. Louis to Bulgaria flight tickets
Lufthansa
Sep 9
STL3:30 pmLambert-St Louis
18h 35m
1 stop
SOF6:05 pmSofia
Sep 16
SOF6:20 amSofia
23h 11m
2 stops
STL9:31 pmLambert-St Louis
$866
Lufthansa
Sep 9
STL3:30 pmLambert-St Louis
18h 35m
1 stop
SOF6:05 pmSofia
Sep 16
SOF6:20 amSofia
15h 05m
1 stop
STL1:25 pmLambert-St Louis
$869
Lufthansa
Sep 9
STL3:30 pmLambert-St Louis
19h 10m
2 stops
SOF6:40 pmSofia
Sep 16
SOF6:20 amSofia
15h 05m
1 stop
STL1:25 pmLambert-St Louis
$879

Air Canada flights from St. Louis to Bulgaria

Our best Air Canada deals on St. Louis to Bulgaria flight tickets
Air Canada
Nov 11
STL11:15 amLambert-St Louis
18h 10m
3 stops
SOF1:25 pmSofia
Nov 28
SOF6:25 amSofia
20h 58m
3 stops
STL7:23 pmLambert-St Louis
$933
Air Canada
Dec 16
STL9:40 amLambert-St Louis
19h 45m
3 stops
SOF1:25 pmSofia
Dec 25
SOF2:10 pmSofia
28h 36m
3 stops
STL10:46 amLambert-St Louis
$1,099
Air Canada
Dec 16
STL9:40 amLambert-St Louis
19h 45m
3 stops
SOF1:25 pmSofia
Dec 25
SOF2:10 pmSofia
28h 36m
3 stops
STL10:46 amLambert-St Louis
$1,104

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Bulgaria that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 31, 2026.
Use the filters below to find and compare flights from St. Louis to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 12/16

1:08 pm-11:50 am

2 stops14h 42m

Sofia

Fri 12/25

7:55 am-5:08 pm

2 stops17h 13m

$854

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 9/9

3:30 pm-6:05 pm

1 stop18h 35m

Sofia

Wed 9/16

6:20 am-9:31 pm

2 stops23h 11m

$866

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 9/9

3:30 pm-6:05 pm

1 stop18h 35m

Sofia

Wed 9/16

6:20 am-1:25 pm

1 stop15h 05m

$869

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 9/9

3:30 pm-6:40 pm

2 stops19h 10m

Sofia

Wed 9/16

6:20 am-1:25 pm

1 stop15h 05m

$879

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 9/9

4:40 pm-6:40 pm

2 stops18h 00m

Sofia

Wed 9/16

6:20 am-1:25 pm

1 stop15h 05m

$886

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 9/9

4:40 pm-6:40 pm

2 stops18h 00m

Sofia

Wed 9/16

6:20 am-6:41 pm

2 stops20h 21m

$890

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 11/11

1:00 pm-10:55 pm

2 stops25h 55m

Sofia

Sat 11/28

2:10 pm-3:26 pm

2 stops33h 16m

$896

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 11/11

3:40 pm-6:10 pm

1 stop18h 30m

Sofia

Sat 11/28

2:10 pm-3:26 pm

2 stops33h 16m

$908

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 11/11

11:15 am-1:25 pm

3 stops18h 10m

Sofia

Sat 11/28

6:25 am-7:23 pm

3 stops20h 58m

$933

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 12/16

9:40 am-1:25 pm

3 stops19h 45m

Sofia

Fri 12/25

2:10 pm-10:46 am

3 stops28h 36m

$1,099

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Bulgaria from

How to get the cheapest flight ticket from St. Louis to Bulgaria

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 Bulgaria?

If you aren’t able to travel to Bulgaria during the month of October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $528.

Cheap St. Louis to Bulgaria flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Bulgaria

Fastest flight time

13h 45m

Direct flights

None
The fastest flight from St. Louis to Bulgaria takes 13h 45m
There are no direct flights from St. Louis to Bulgaria. There are no popular flight routes from St. Louis to Bulgaria.
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Frequently asked questions about flying from St. Louis to Bulgaria

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Bulgaria?

    Prices for flights from Lambert-St Louis Airport to Bulgaria are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Bulgaria?

  • How old do you have to be to fly from Lambert-St Louis Airport to Bulgaria?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Bulgaria.

  • What documentation or ID do you need to fly to Bulgaria?

    The travel and health documents required for your trip to Bulgaria can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bulgaria. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Bulgaria

Compare and see reviews for airlines that fly from St. Louis to Bulgaria with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $559Free CancellationRating
7.4
10,054 reviews
Search United Airlines flights
LufthansaPriceFrom $567Free CancellationRating
6.8
8,167 reviews
Search Lufthansa flights
Air CanadaPriceFrom $1,108Free CancellationRating
7.1
11,414 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Bulgaria?

Finding the right flight to Bulgaria from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Bulgaria quick and easy, saving you time and money.

Can I find flights from St. Louis to Bulgaria with flexible booking policies on momondo?

momondo does allow users to show only those flights to Bulgaria from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Bulgaria?

momondo helps you find the best flight between St. Louis and Bulgaria by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from St. Louis to Bulgaria right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Bulgaria flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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