Cheap flights from St. Louis (STL) to Sofia (SOF) from $1,356

This is the cheapest one-way flight price, found on 6/7. Prices may vary by date and flight preferences.
STL — SOF
Jun 13 — Jun 201

The best prices from Lambert-St Louis to Sofia are usually found in January or February, booked 57 days in advance, depart on a Tuesday or Sunday and return on a Monday

How to find the cheapest flight from St. Louis (STL) to Sofia (SOF)

All the information you need to plan the best STL to SOF flight in 2023: compare St. Louis to Sofia flight prices with the expected peak season, weather and rainfall in Sofia.

Popular in

September

Cheapest in

January

Average price

$1,187

Round-trip from

$541
High demand for flights, 23% potential price rise
Best time to find cheap flights, 30% potential price drop
Average for round-trip flights in June 2023
From Lambert-St Louis to Sofia

STL - SOF

Price

$541 - $1,263

SOF

Temperature

30.2 - 68 °F

SOF

Rainfall

1.2 - 2.8 inches

Cheap flights from St. Louis to Sofia in June, July 2023

The best prices found for STL to SOF flights for June, July

St. Louis to Sofia 2023 flight deals

Cheap flights to Sofia from St. Louis found for this year

Cheap Lufthansa flights from St. Louis to Sofia

Find flights from St. Louis to Sofia within your budget

Use the slider to find flights from St. Louis to Sofia that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$1,356 - $3,810

Route

Depart

Return

Price

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Fri 7/7

2 stops17h 13m

Sofia

Sun 9/3

2 stops36h 45m

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Fri 7/7

2 stops17h 00m

Sofia

Sun 9/3

1 stop15h 00m

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Fri 7/7

1 stop22h 55m

Sofia

Sun 9/3

1 stop15h 00m

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Fri 7/7

3 stops29h 15m

Sofia

Sun 9/3

2 stops19h 22m

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Thu 6/29

3 stops27h 40m

Sofia

Fri 7/21

2 stops17h 21m

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Fri 7/7

3 stops26h 50m

Sofia

Sun 9/3

3 stops28h 50m

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Thu 6/29

2 stops16h 15m

Sofia

Fri 7/21

2 stops17h 21m

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Fri 6/30

1 stop13h 35m

Sofia

Sun 7/30

1 stop15h 15m

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Thu 6/29

3 stops18h 45m

Sofia

Fri 7/21

3 stops26h 30m

Flights are sorted by cheapest first

Deals found on 6/7

Reviews of airlines servicing Sofia

United Airlines
7.6
Good
1,574 reviews

Crew

8.2

Boarding

7.8

Entertainment

7.1

Food

6.8

Comfort

7.4

Overall

7.6

Reviews

1 / 10

Let’s face it none of the airline experiences these days are anything to write home about. However I bagged a front row seat in coach and had lots of legroom so overall not too bad. Of course my seat mate was much larger than his seat and oozed over occasionally. So just good not great.

United Airlines
7.6
Good
1,574 reviews
United Airlines
7.6
Good
1,574 reviews

Crew

8.2

Boarding

7.8

Entertainment

7.1

Food

6.8

Comfort

7.4

Overall

7.6

Reviews

1 / 10

Let’s face it none of the airline experiences these days are anything to write home about. However I bagged a front row seat in coach and had lots of legroom so overall not too bad. Of course my seat mate was much larger than his seat and oozed over occasionally. So just good not great.

American Airlines
7.3
Good
2,149 reviews
United Airlines
7.6
Good
1,574 reviews

Crew

8.2

Boarding

7.8

Entertainment

7.1

Food

6.8

Comfort

7.4

Overall

7.6

Reviews

1 / 10

Let’s face it none of the airline experiences these days are anything to write home about. However I bagged a front row seat in coach and had lots of legroom so overall not too bad. Of course my seat mate was much larger than his seat and oozed over occasionally. So just good not great.

Lufthansa
6.8
Okay
1,199 reviews
United Airlines
7.6
Good
1,574 reviews

Crew

8.2

Boarding

7.8

Entertainment

7.1

Food

6.8

Comfort

7.4

Overall

7.6

Reviews

1 / 10

Let’s face it none of the airline experiences these days are anything to write home about. However I bagged a front row seat in coach and had lots of legroom so overall not too bad. Of course my seat mate was much larger than his seat and oozed over occasionally. So just good not great.

British Airways
6.6
Okay
558 reviews
United Airlines
7.6
Good
1,574 reviews

Crew

8.2

Boarding

7.8

Entertainment

7.1

Food

6.8

Comfort

7.4

Overall

7.6

Reviews

1 / 10

Let’s face it none of the airline experiences these days are anything to write home about. However I bagged a front row seat in coach and had lots of legroom so overall not too bad. Of course my seat mate was much larger than his seat and oozed over occasionally. So just good not great.

Related info for your journey

Useful info, stats and facts about St. Louis to Sofia flights.

Other flights from St. Louis

Top 3 airlines flying from St. Louis to Sofia

The chart below displays the airlines Cheapflights users traveling from St. Louis to Sofia choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
United AirlinesCheapest$797Average$1,195FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
LufthansaCheapest$806Average$1,386FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Lufthansa flights
Turkish AirlinesCheapest$1,265Average$1,411FlexibilityNo cancel feeOn-time77%COVID-19 safety
Search Turkish Airlines flights
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