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Sofia

$538+ Cheap flights from Austin (AUS) to Sofia (SOF)

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SOF
nov. 22 — nov. 291
sáb. 11/22
sáb. 11/29
1 adult, Economy
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Find flight deals from Austin to Sofia

Cheapest flights from Austin to Sofia
Explore the most affordable flight options available from Austin to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 23, 2025.

This Expedia deal was found by Cheapflights users on 10/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/61:47 pmAUS - SOF
2 stops15h 13mMultiple Airlines
sáb. 12/1312:05 pmSOF - AUS
2 stops28h 23mMultiple Airlines
Deal found 10/22$538
This Air France deal was found by Cheapflights users on 10/22. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/66:05 pmAUS - SOF
1 stop36h 00mKLM
sáb. 12/137:00 amSOF - AUS
2 stops22h 35mKLM
Deal found 10/22$539
This Cheapflightsfares deal was found by Cheapflights users on 10/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/134:10 pmAUS - SOF
1 stop13h 40mLufthansa
jue. 11/206:00 amSOF - AUS
1 stop16h 15mLufthansa
Deal found 10/22$727
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/131:00 pmAUS - SOF
3 stops25h 45mUnited Airlines
jue. 11/206:00 amSOF - AUS
1 stop16h 15mUnited Airlines
Deal found 10/22$732
This Air Canada deal was found by Cheapflights users on 10/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/131:05 pmAUS - SOF
2 stops25h 40mMultiple Airlines
jue. 11/202:35 pmSOF - AUS
3 stops28h 32mMultiple Airlines
Deal found 10/22$751
This Air Canada deal was found by Cheapflights users on 10/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/131:05 pmAUS - SOF
3 stops45h 10mAir Canada
jue. 11/206:00 amSOF - AUS
3 stops24h 59mAir Canada
Deal found 10/22$864

Cheap flight deals from Austin to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) 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 octubre 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$538
(Expedia)

Popular in

June

Cheapest in

August

Average price

$942
Provider with most accurate pricing for Austin Bergstrom-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Austin Bergstrom-Sofia flights.
Search Deals
From Austin Bergstrom to Sofia
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($317 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin 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 2,558,603 searches. Data last updated octubre 23, 2025.
Use the filters below to find and compare flights from Austin to Sofia that are best for you.

Fly from

Austin

Fly to

Sofia

Route

Depart

Return

Price

AustinSofia

AUS - SOF

AUSSOF

Austin Bergstrom

sáb. 12/6

1:47 pm-1:00 pm

2 stops15h 13m

Sofia

sáb. 12/13

12:05 pm-8:28 am

2 stops28h 23m

$538

AustinSofia

AUS - SOF

AUSSOF

Austin Bergstrom

sáb. 12/6

6:05 pm-2:05 pm

1 stop36h 00m

Sofia

sáb. 12/13

7:00 am-9:35 pm

2 stops22h 35m

$539

AustinSofia

AUS - SOF

AUSSOF

Austin Bergstrom

vie. 3/27

1:00 pm-6:20 pm

2 stops22h 20m

Sofia

mar. 3/31

6:15 am-10:29 pm

2 stops24h 14m

$644

AustinSofia

AUS - SOF

AUSSOF

Austin Bergstrom

jue. 11/13

4:10 pm-1:50 pm

1 stop13h 40m

Sofia

jue. 11/20

6:00 am-2:15 pm

1 stop16h 15m

$727

AustinSofia

AUS - SOF

AUSSOF

Austin Bergstrom

jue. 11/13

1:00 pm-10:45 pm

3 stops25h 45m

Sofia

jue. 11/20

6:00 am-2:15 pm

1 stop16h 15m

$732

AustinSofia

AUS - SOF

AUSSOF

Austin Bergstrom

jue. 11/13

1:05 pm-10:45 pm

2 stops25h 40m

Sofia

jue. 11/20

2:35 pm-11:07 am

3 stops28h 32m

$751

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Compare providers for flights from Austin to Sofia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Austin to Sofia in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
GurufarePrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Austin-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Austin-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Austin-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Austin-Sofia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Austin-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Austin to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Austin 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 Austin to Sofia

What is the cheapest time of day to fly from AUS to SOF?

Find hourly flight availability from Austin to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 23, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 18% on flights from Austin to Sofia by exploring options for tickets in the evening.

How much does it cost to fly round-trip from Austin to Sofia?

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 octubre 23, 2025.
Peruse reviews from past customers who have flown with United Airlines and Lufthansa from Austin to Sofia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,995 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,995 reviews
United Airlines
7.4
Good
8,995 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
Lufthansa
6.8
Okay
7,518 reviews
United Airlines
7.4
Good
8,995 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

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

  • How long is the flight from Austin to Sofia?

    There are many flights that can get you from Austin to Sofia in 22h 20m. Fly via KLM or Lufthansa to get the fastest option. Airlines will cover a distance of 6162 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Austin to Sofia round-trip?

    Lufthansa, at $639, was found to be the cheapest airline from Austin to Sofia. An alternate airline flying to your destination would be United Airlines. Lufthansa is priced at 38% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Austin to Sofia that include hotel bookings?

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

  • How can I find direct flights from Austin to Sofia?

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

  • Can I find deals for business class flights from Austin to Sofia?

    Yes. Cheapflights offers flight deals from Austin 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.

See more FAQs

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Alternative routes for Austin to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Austin to Sofia

Discover the top 2 airlines that operate flights from Austin 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 2,558,603 searches. Data last updated octubre 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$639Average$968FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$927Average$1,087FlexibilityNo cancel feeOn-time69%

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