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Cheap flights from St. Louis (STL) to Sofia (SOF) from $867

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 10/1. 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.
STL — SOF
May 10 — May 171
From?
To?
Fri 5/10
Fri 5/17
1 adult, Economy
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The best prices from Lambert-St Louis to Sofia are usually found in February or November, booked 3 days in advance, depart on a Tuesday or Thursday and return on a Thursday

Cheap flight deals from St. Louis to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 5, 2024.

Popular in

December

Cheapest in

February

Average price

$1,469

Round-trip from

$658
High demand for flights, 27% potential price rise
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Best time to find cheap flights, 38% potential price drop
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Average for round-trip flights in May 2024
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From Lambert-St Louis to Sofia
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What is the cheapest day to fly round-trip from St. Louis to Sofia?

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

The best pricing can be found in the month of February. Prices to Sofia from St. Louis average $1,138. You can even find prices in February for less than $1,138, as users have found deals to Sofia from as low as $669. The month of December appears to be one of the more expensive times to travel to Sofia from St. Louis. Flying in the targeted month can save you up to 36%.

When is the cheapest time to fly from St. Louis to Sofia (STL - SOF)?

When flying from St. Louis to Sofia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 18% versus a flight at noon.

Cheap British Airways flights from St. Louis to Sofia

Explore cheap flight options specifically provided by British Airways for the route between St. Louis and Sofia. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Take a peek at the cheapest British Airways flights we've detected traveling from St. Louis to Sofia. Come back soon if you're not finding the exact deal you're looking for.
Tue 10/16:21 pmSTL - SOF
2 stops42h 09mBritish Airways
Tue 10/159:15 pmSOF - STL
2 stops26h 54mBritish Airways
Deal found 5/4$867
Fri 9/136:21 pmSTL - SOF
2 stops16h 39mBritish Airways
Tue 10/19:15 pmSOF - STL
2 stops27h 59mBritish Airways
Deal found 5/4$897

Cheap Lufthansa flights from St. Louis to Sofia

Explore cheap flight options specifically provided by Lufthansa for the route between St. Louis and Sofia. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
To aid your search, here are some of the cheapest Lufthansa flights we've found from St. Louis to Sofia. Ensure the flight price, dates, time, and airline match your criteria before you book.
Tue 10/15:34 pmSTL - SOF
2 stops17h 11mLufthansa
Tue 10/1512:00 pmSOF - STL
1 stop33h 30mLufthansa
Deal found 5/5$1,000
Fri 9/133:25 pmSTL - SOF
1 stop23h 10mLufthansa
Tue 10/16:00 amSOF - STL
2 stops17h 49mLufthansa
Deal found 5/4$1,001
Tue 10/15:34 pmSTL - SOF
2 stops17h 11mLufthansa
Tue 10/1512:00 pmSOF - STL
1 stop33h 30mLufthansa
Deal found 5/4$1,006
Fri 9/133:25 pmSTL - SOF
1 stop23h 10mLufthansa
Tue 10/16:45 pmSOF - STL
1 stop26h 45mLufthansa
Deal found 5/4$1,044
Tue 7/235:30 pmSTL - SOF
2 stops34h 40mLufthansa
Wed 8/76:30 amSOF - STL
1 stop15h 00mLufthansa
Deal found 5/4$1,493
Sun 6/303:25 pmSTL - SOF
1 stop18h 40mLufthansa
Tue 7/236:45 pmSOF - STL
1 stop26h 45mLufthansa
Deal found 5/3$1,695
Sun 6/163:25 pmSTL - SOF
1 stop13h 55mLufthansa
Tue 7/232:05 pmSOF - STL
1 stop31h 25mLufthansa
Deal found 5/4$2,050

Cheap St. Louis to Sofia flights in May & June 2024

Find cheap flight options from St. Louis to Sofia specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,719,943 searches. Prices were last updated on May 5, 2024.
These are some of the most attractive deals on flights from St. Louis to Sofia in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Sun 6/308:25 amSTL - SOF
2 stops18h 55mMultiple Airlines
Tue 7/236:45 pmSOF - STL
2 stops28h 36mMultiple Airlines
Deal found 5/3$1,097
Sun 6/1611:00 amSTL - SOF
2 stops16h 20mAir Canada
Tue 7/2312:55 pmSOF - STL
2 stops34h 26mAir Canada
Deal found 5/4$1,101
Sun 6/308:05 amSTL - SOF
2 stops19h 15mUnited Airlines
Tue 7/236:30 amSOF - STL
3 stops23h 47mUnited Airlines
Deal found 5/3$1,326
Sun 6/303:25 pmSTL - SOF
1 stop18h 40mMultiple Airlines
Tue 7/236:45 pmSOF - STL
2 stops28h 36mMultiple Airlines
Deal found 5/3$1,408
Sun 6/168:05 amSTL - SOF
2 stops19h 15mUnited Airlines
Tue 7/236:30 amSOF - STL
3 stops23h 47mUnited Airlines
Deal found 5/4$1,496
Sun 6/163:25 pmSTL - SOF
1 stop18h 40mMultiple Airlines
Tue 7/236:30 amSOF - STL
2 stops16h 51mMultiple Airlines
Deal found 5/4$1,591
Sun 6/303:25 pmSTL - SOF
1 stop18h 40mLufthansa
Tue 7/236:45 pmSOF - STL
1 stop26h 45mLufthansa
Deal found 5/3$1,695
Sun 6/163:25 pmSTL - SOF
1 stop13h 55mLufthansa
Tue 7/232:05 pmSOF - STL
1 stop31h 25mLufthansa
Deal found 5/4$2,050

St. Louis to Sofia 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Sofia in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
These are some of the most attractive deals on flights from St. Louis to Sofia in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Tue 10/16:21 pmSTL - SOF
2 stops42h 09mBritish Airways
Tue 10/159:15 pmSOF - STL
2 stops26h 54mBritish Airways
Deal found 5/4$867
Fri 9/136:21 pmSTL - SOF
2 stops16h 39mBritish Airways
Tue 10/19:15 pmSOF - STL
2 stops27h 59mBritish Airways
Deal found 5/4$897
Tue 10/15:34 pmSTL - SOF
2 stops17h 11mLufthansa
Tue 10/1512:00 pmSOF - STL
1 stop33h 30mLufthansa
Deal found 5/5$1,000
Fri 9/133:25 pmSTL - SOF
1 stop23h 10mLufthansa
Tue 10/16:00 amSOF - STL
2 stops17h 49mLufthansa
Deal found 5/4$1,001
Tue 10/15:34 pmSTL - SOF
2 stops17h 11mLufthansa
Tue 10/1512:00 pmSOF - STL
1 stop33h 30mLufthansa
Deal found 5/4$1,006
Fri 9/133:25 pmSTL - SOF
1 stop23h 10mLufthansa
Tue 10/16:45 pmSOF - STL
1 stop26h 45mLufthansa
Deal found 5/4$1,044
Sun 6/308:25 amSTL - SOF
2 stops18h 55mMultiple Airlines
Tue 7/236:45 pmSOF - STL
2 stops28h 36mMultiple Airlines
Deal found 5/3$1,097
Tue 7/2310:10 amSTL - SOF
2 stops17h 30mMultiple Airlines
Wed 8/76:45 pmSOF - STL
2 stops28h 36mMultiple Airlines
Deal found 5/4$1,099
Sun 6/1611:00 amSTL - SOF
2 stops16h 20mAir Canada
Tue 7/2312:55 pmSOF - STL
2 stops34h 26mAir Canada
Deal found 5/4$1,101

Find flights from St. Louis to Sofia within your budget

Customize your flight search to find flights from St. Louis to Sofia 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 2,719,943 searches. Data last updated May 5, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$867 - $1,205

Route

Depart

Return

Price

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Tue 10/1

2 stops42h 09m

Sofia

Tue 10/15

2 stops26h 54m

$867

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Fri 9/13

2 stops16h 39m

Sofia

Tue 10/1

2 stops27h 59m

$897

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Tue 10/1

2 stops17h 11m

Sofia

Tue 10/15

1 stop33h 30m

$1,000

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Fri 9/13

1 stop23h 10m

Sofia

Tue 10/1

2 stops17h 49m

$1,001

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Tue 10/1

2 stops17h 11m

Sofia

Tue 10/15

1 stop33h 30m

$1,006

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Sun 6/30

2 stops18h 55m

Sofia

Tue 7/23

2 stops28h 36m

$1,097

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Tue 7/23

2 stops17h 30m

Sofia

Wed 8/7

2 stops28h 36m

$1,099

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Sun 6/16

2 stops16h 20m

Sofia

Tue 7/23

2 stops34h 26m

$1,101

Lambert-St LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Tue 7/23

2 stops21h 30m

Sofia

Wed 8/7

3 stops23h 47m

$1,205

Flights are sorted by cheapest first

Deals found on 5/4

When is the cheapest time to fly from St. Louis to Sofia?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Sofia. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Sofia flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Sofia by month

Plan your trip from St. Louis to Sofia by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Sofia is currently $0 while a round-trip flight costs $1,030. Price data was last updated on April 28, 2024.

Currently, November is the cheapest month in which you can book a flight from St. Louis to Sofia (average of $658). Flying from St. Louis to Sofia in June is currently the most expensive (average of $1,353). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$661

February

$681

March

$680

April

$781

May

$932

June

$1,353

July

$1,164

August

$948

September

$790

October

$702

November

$658

December

$672

Temperature and rainfall in Sofia by month

Plan your trip to Sofia by taking into account the average temperature and rainfall totals by month.

SOF

Temperature

30.2 - 68 °F

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated May 5, 2024.
Read reviews from past customers who have flown British Airways, Lufthansa and United Airlines from St. Louis to Sofia. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
11,118 reviews
Check prices

Comfort

7.2

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Overall

7.4

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

United Airlines
7.4
Good
11,118 reviews
United Airlines
7.4
Good
11,118 reviews
Check prices

Comfort

7.2

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Overall

7.4

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

Air Canada
7.0
Good
6,913 reviews
United Airlines
7.4
Good
11,118 reviews
Check prices

Comfort

7.2

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Overall

7.4

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

Lufthansa
7.0
Good
7,719 reviews
United Airlines
7.4
Good
11,118 reviews
Check prices

Comfort

7.2

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Overall

7.4

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

British Airways
6.8
Okay
6,874 reviews
United Airlines
7.4
Good
11,118 reviews
Check prices

Comfort

7.2

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Overall

7.4

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from St. Louis to Sofia for under $900 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Sofia for under $900. The cheapest flight booked recently is on British Airways for just $867, but on average you can expect to pay $1,284.

  • What are the cheapest airlines flying from St. Louis to Sofia round-trip?

    British Airways, at $867, was found to be the cheapest airline from St. Louis to Sofia.Alternate airlines to your destination round-trip include Lufthansa and Air Canada. Users have found that British Airways is 23% cheaper than the other options available to this destination.

  • What are the most popular airlines that fly from St. Louis to Sofia?

    British Airways, Lufthansa and United Airlines are the most popular airlines when flying from St. Louis to Sofia.

  • What does STL to SOF mean?

    Great question - STL to SOF just means Lambert-St Louis Airport to Sofia Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from St. Louis to Sofia that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Sofia flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Sofia with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Sofia flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Sofia that include hotel bookings?

    Yes. In addition to deals on St. Louis to Sofia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Sofia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Sofia.

  • Can I find deals for business class flights from St. Louis to Sofia?

    Yes. Cheapflights offers flight deals from St. Louis to Sofia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Sofia that allow pets onboard?

    Many airlines flying from St. Louis to Sofia offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Sofia?

    Yes, you can often find last-minute deals on St. Louis to Sofia flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Sofia flight deals updated?

    The St. Louis to Sofia flight deals you see on this page were last updated on 5/5.

See more FAQs

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Alternative routes for St. Louis to Sofia
See prices for flight routes from nearby airports that may be better suited for you.

Kansas City to Sofia flights

Top 3 airlines flying from St. Louis to Sofia

Discover the top 3 airlines that operate flights from St. Louis to Sofia. 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 2,719,943 searches. Data last updated May 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$694Average$1,164FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest$726Average$1,237FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest$812Average$1,462FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
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Search flights from St. Louis to Sofia by cabin class

Find flights from St. Louis to Sofia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Sofia?

When you search for this flight from St. Louis to Sofia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Sofia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from St. Louis to Sofia for you. Better yet — we are completely free to use.

Can Cheapflights find flights from St. Louis to Sofia with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to Sofia, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from St. Louis to Sofia become cheaper?

Yes! Start tracking prices for St. Louis to Sofia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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