$540+ Cheap flights from St. Louis (STL) to Bulgaria
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SOF
Nov 28 — Dec 51
1 adult, Economy
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1. Tell us where you want to go
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Cheapest flights from St. Louis to BulgariaExplore the most affordable flight options available from St. Louis to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.
Explore the most affordable flight options available from St. Louis to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.
This oojo deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:24 pmSTL - SOF
2 stops31h 21mTurkish Airlines
Tue 11/49:40 pmSOF - STL
2 stops26h 09mTurkish Airlines
Deal found 10/29![Turkish Airlines logo]()
$1,272
This Ovago deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/23:50 pmSTL - SOF
1 stop13h 45mLufthansa
Tue 11/46:05 amSOF - STL
2 stops25h 37mLufthansa
Deal found 10/29![Lufthansa logo]()
$1,275
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/23:50 pmSTL - SOF
3 stops21h 10mMultiple Airlines
Tue 11/47:05 pmSOF - STL
2 stops26h 50mMultiple Airlines
Deal found 10/29![Multiple Airlines logo]()
$1,501
Cheap flight deals from St. Louis to Bulgaria
Keep the following information in mind while searching for St. Louis to Bulgaria flight deals. Data was last updated October 29, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $540 (Cheapflightsfares) |
Popular in | June |
Cheapest in | February |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from St. Louis to Bulgaria that are best for you.
Fly from
St. Louis
Fly to
Bulgaria
Route
Depart
Return
Price
St. LouisSofia
STL - SOF
STLSOF
Lambert-St Louis
Fri 1/23
11:22 am-6:20 pm
2 stops22h 58m
Sofia
Sun 2/1
6:10 am-11:59 pm
2 stops25h 49m
$540
St. LouisSofia
STL - SOF
STLSOF
Lambert-St Louis
Thu 2/12
9:55 am-10:45 pm
2 stops28h 50m
Sofia
Sun 2/22
6:10 am-9:00 pm
2 stops22h 50m
$543
St. LouisSofia
STL - SOF
STLSOF
Lambert-St Louis
Fri 1/23
4:05 pm-1:40 pm
2 stops37h 35m
Sofia
Sun 2/1
6:10 am-10:58 pm
3 stops24h 48m
$565
St. LouisSofia
STL - SOF
STLSOF
Lambert-St Louis
Fri 1/23
11:20 am-1:35 pm
3 stops18h 15m
Sofia
Sun 2/1
6:10 am-10:58 pm
3 stops24h 48m
$645
St. LouisSofia
STL - SOF
STLSOF
Lambert-St Louis
Fri 3/27
4:05 pm-10:45 pm
2 stops23h 40m
Sofia
Tue 3/31
6:15 am-2:18 pm
2 stops16h 03m
$645
St. LouisSofia
STL - SOF
STLSOF
Lambert-St Louis
Fri 3/27
4:50 pm-1:35 pm
1 stop13h 45m
Sofia
Tue 3/31
6:40 pm-1:30 pm
1 stop26h 50m
$662
Best time to book a flight from St. Louis to Bulgaria
Have a flexible travel schedule? Discover the best time to fly to Bulgaria from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Bulgaria
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Bulgaria
Get insights into the airlines that provide service to Bulgaria. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bulgaria. Reviews last updated October 29, 2025.
Get a feel of what it's like to fly with United Airlines and Lufthansa from St. Louis to Bulgaria by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Bulgaria
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from St. Louis to Bulgaria
Discover the top 2 airlines that operate flights from St. Louis to Bulgaria. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$669 | Average$958 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$711 | Average$870 | FlexibilityNo cancel fee | On-time69% |