HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sofia

$603+ Cheap flights from Houston 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — SOF
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Houston to Sofia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Houston to Sofia

Cheapest flights from Houston to Sofia
Explore the most affordable flight options available from Houston to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/19. 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.
Mon 12/293:55 pmIAH - SOF
2 stops35h 55mAustrian Airlines
Fri 1/96:45 pmSOF - IAH
2 stops30h 05mAustrian Airlines
Deal found 12/19$798
This FlightHub deal was found by Cheapflights users on 12/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/293:55 pmIAH - SOF
2 stops22h 50mMultiple Airlines
Fri 1/96:45 pmSOF - IAH
2 stops30h 05mMultiple Airlines
Deal found 12/20$814
This Ovago deal was found by Cheapflights users on 12/20. 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.
Mon 12/294:30 pmIAH - SOF
1 stop22h 15mLufthansa
Fri 1/92:35 pmSOF - IAH
1 stop35h 40mLufthansa
Deal found 12/20$986
This Cheapflightsfares deal was found by Cheapflights users on 12/20. 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.
Sun 12/214:20 pmIAH - SOF
2 stops36h 55mLufthansa
Sun 1/117:05 pmSOF - IAH
2 stops27h 35mLufthansa
Deal found 12/20$1,149
This FlightHub deal was found by Cheapflights users on 12/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:55 pmIAH - SOF
1 stop19h 50mMultiple Airlines
Thu 1/86:45 pmSOF - IAH
2 stops27h 55mMultiple Airlines
Deal found 12/20$1,270
This FlightHub deal was found by Cheapflights users on 12/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/214:20 pmIAH - SOF
2 stops22h 25mMultiple Airlines
Mon 1/56:45 pmSOF - IAH
2 stops27h 55mMultiple Airlines
Deal found 12/20$1,284
This oojo deal was found by Cheapflights users on 12/20. 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 12/2112:09 pmHOU - SOF
2 stops20h 11mBritish Airways
Sun 1/112:30 pmSOF - HOU
2 stops35h 36mBritish Airways
Deal found 12/20$1,723
This British Airways deal was found by Cheapflights users on 12/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:20 pmHOU - SOF
2 stops36h 00mBritish Airways
Sun 1/112:30 pmSOF - HOU
2 stops33h 42mBritish Airways
Deal found 12/20$1,943
This oojo deal was found by Cheapflights users on 12/20. 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 12/2112:09 pmHOU - SOF
2 stops20h 11mBritish Airways
Mon 1/55:25 pmSOF - HOU
2 stops32h 41mBritish Airways
Deal found 12/20$3,156
This Air France deal was found by Cheapflights users on 12/19. 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.
Fri 12/196:47 pmHOU - SOF
2 stops35h 08mAir France
Sun 1/117:00 amSOF - HOU
2 stops23h 33mAir France
Deal found 12/19$4,195

Find flight deals from Houston to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) 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 December 21, 2025.

Round-trip from

$597
(FlightHub)

Popular in

June

Cheapest in

October

Average price

$1,050
From Houston to Sofia
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($369 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Houston 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 December 21, 2025.
Use the filters below to find and compare flights from Houston to Sofia that are best for you.

Fly from

Houston

Fly to

Sofia

Route

Depart

Return

Price

HoustonSofia

IAH - SOF

IAHSOF

Houston George Bush Intcntl

Thu 2/19

9:05 pm-3:10 pm

1 stop34h 05m

Sofia

Mon 2/23

9:35 am-7:10 pm

1 stop17h 35m

$603

HoustonSofia

IAH - SOF

IAHSOF

Houston George Bush Intcntl

Thu 4/30

9:05 pm-3:00 pm

1 stop33h 55m

Sofia

Tue 10/6

9:05 pm-12:45 pm

1 stop23h 40m

$626

HoustonSofia

HOU - SOF

HOUSOF

Houston Hobby

Tue 2/3

11:09 am-1:55 pm

2 stops18h 46m

Sofia

Tue 2/10

7:00 am-10:33 pm

2 stops23h 33m

$630

HoustonSofia

IAH - SOF

IAHSOF

Houston George Bush Intcntl

Thu 2/19

11:55 am-1:15 pm

2 stops17h 20m

Sofia

Mon 2/23

7:05 pm-2:40 pm

2 stops27h 35m

$681

HoustonSofia

IAH - SOF

IAHSOF

Houston George Bush Intcntl

Thu 2/19

4:50 pm-10:45 pm

1 stop21h 55m

Sofia

Mon 2/23

2:20 pm-6:15 pm

1 stop35h 55m

$688

HoustonSofia

IAH - SOF

IAHSOF

Houston George Bush Intcntl

Thu 2/19

12:10 pm-1:50 pm

2 stops17h 40m

Sofia

Mon 2/23

2:20 pm-9:39 pm

2 stops39h 19m

$706

HoustonSofia

IAH - SOF

IAHSOF

Houston George Bush Intcntl

Thu 4/30

4:30 pm-11:10 pm

1 stop22h 40m

Sofia

Tue 10/6

6:10 am-7:41 pm

2 stops21h 31m

$718

HoustonSofia

HOU - SOF

HOUSOF

Houston Hobby

Tue 1/6

4:55 pm-8:10 pm

2 stops19h 15m

Sofia

Sat 1/17

12:05 pm-10:46 pm

2 stops18h 41m

$1,215

HoustonSofia

HOU - SOF

HOUSOF

Houston Hobby

Fri 1/9

4:55 pm-1:00 pm

2 stops36h 05m

Sofia

Fri 1/16

1:30 pm-12:19 pm

2 stops30h 49m

$1,596

HoustonSofia

HOU - SOF

HOUSOF

Houston Hobby

Thu 4/30

10:05 am-2:00 pm

2 stops19h 55m

Sofia

Tue 10/6

7:00 am-9:43 pm

2 stops22h 43m

$1,864

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Best time to book a flight from Houston to Sofia

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

What is the cheapest month to book a flight from Houston to Sofia?

Currently, October is the cheapest month in which you can book a flight from Houston to Sofia (average of $586). Flying from Houston to Sofia in June is currently the most expensive (average of $1,105). 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.

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

Find hourly flight availability from Houston 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 December 21, 2025.

It’s typically best to fly out from Houston to Sofia at noon. Doing so could potentially save you 37% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip from Houston 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 December 21, 2025.
Get a feel of what it's like to fly with United Airlines, Turkish Airlines, and Lufthansa from Houston to Sofia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,100 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,100 reviews
United Airlines
7.4
Good
9,100 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Turkish Airlines
7.3
Good
4,108 reviews
United Airlines
7.4
Good
9,100 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Lufthansa
6.8
Okay
7,639 reviews
United Airlines
7.4
Good
9,100 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
British Airways
6.7
Okay
7,600 reviews
United Airlines
7.4
Good
9,100 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

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

  • What airport do you fly into for flights to Sofia from Houston?

    If you book a flight to Sofia from Houston, you will be flying to Sofia, which is the city’s only airport. Sofia (SOF) is located 4.2 mi from the center of Sofia. There are 0 flights from Houston to Sofia per day from 4 different airlines.

  • How long is the flight from Houston to Sofia?

    Airlines like Turkish Airlines, Lufthansa, and United Airlines fly from Houston to Sofia in about 17h 20m. The time it takes to get you to your destination can typically vary by up to 16h 45m. The distance from Houston to Sofia is about 6085 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on British Airways is currently your cheapest option to Sofia, with prices starting at $575. Additional round-trip tickets that might be worth considering are offered by Turkish Airlines and Lufthansa, with the lowest prices starting at $598 and $599, respectively. British Airways is currently priced 37% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Houston 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.

  • What is the cheapest month to book a flight from Houston to Sofia?

    Currently, October is the cheapest month in which you can book a flight from Houston to Sofia (average of $586). Flying from Houston to Sofia in June is currently the most expensive (average of $1,105). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Houston to Sofia

Discover the top 4 airlines that operate flights from Houston 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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$575Average$853FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$598Average$769FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$599Average$1,029FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$755Average$1,068FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.