$465 Cheap Flights from Houston (HOU) to Sofia (SOF)

View $465 flight on Tue, Nov 18, 2025Opens in a new window

Popular airlines from Houston William Hobby Airport (HOU) to Sofia Airport (SOF)

Cheap Flights from Houston to Sofia (HOU-SOF)

Prices were available within the past 7 days and start at $465 for one-way flights and $601 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Wed, Jan 7 - Wed, Jan 14
HOU
Houston
SOF
Sofia
$601 Roundtrip, found 1 day ago
$601
Roundtrip
found 1 day ago
Select KLM flight, departing Wed, Jan 7 from Houston to Sofia, returning Wed, Jan 14, priced at $601 found 1 day ago

Alternative airports near Sofia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sofia Airport SOF. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $653
SOF
Sofia Airport
CheapestClosest
Average driving time to city center11 min
Flights from $653

Frequently asked questions

How much does a flight from William P. Hobby Airport (HOU) to Sofia Airport (SOF) cost?
Lock in a cheap one-way flight from $465 or cheap return flight from $601 from William P. Hobby Airport (HOU) to Sofia Airport (SOF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from William P. Hobby Airport (HOU) to Sofia Airport (SOF)?
The cheapest month to fly from HOU to SOF is January, when there's less demand. Off-peak months are generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from William P. Hobby Airport (HOU) to Sofia Airport (SOF)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from HOU to SOF. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from William P. Hobby Airport (HOU) to Sofia Airport (SOF)?
There are no daily direct flights from William P. Hobby Airport (HOU) to Sofia Airport (SOF). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from HOU to SOF?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can vary depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from William P. Hobby Airport (HOU) to Sofia Airport (SOF)?
To touch down at Sofia Airport (SOF) without delays, choose a flight that leaves William P. Hobby Airport (HOU) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from William P. Hobby Airport (HOU) to Sofia Airport (SOF) last-minute?
Booking your plane ticket from HOU to SOF shortly before your journey is generally more expensive. But if you're flexible with your departure times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a HOU to SOF flight and hotel package?
You can save money by booking a HOU to SOF flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've selected your preferred flights and accommodations, you can add extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from William P. Hobby Airport (HOU) to Sofia Airport (SOF)?
You can usually cancel or reschedule your HOU to SOF flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
William P. Hobby
Destination airport
Sofia
Airlines serving
KLM
Roundtrip price
$601
Distance
6103 mi

Book with confidence

Houston to Sofia Flights

The cheapest times to fly from Houston to Sofia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Sofia are during the month of January. You can find some of the cheapest flights from Houston to Sofia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Sofia

Sunday is one of the best days to book for cheap flights from Houston to Sofia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to Sofia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Sofia in 2025. You can also book with separate airlines for your outbound and return journeys, from $465 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Sofia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Sofia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Houston to Sofia Flights

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*Available to One Key members.