$514 Cheap Flights from Houston (IAH) to Sofia (SOF)

View $514 flight on Wed, Jul 30, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Sofia Airport (SOF)

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Cheap Flights from Houston to Sofia (IAH-SOF)

Prices were available within the past 7 days and start at $514 for one-way flights and $601 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Nov 9 - Wed, Nov 19
IAH
Houston
SOF
Sofia
$601 Roundtrip, found 3 days ago
$601
Roundtrip
found 3 days ago
Select United flight, departing Sun, Nov 9 from Houston to Sofia, returning Wed, Nov 19, priced at $601 found 3 days ago
United
Mon, Apr 13 - Fri, Apr 24
IAH
Houston
SOF
Sofia
$603 Roundtrip, found 2 days ago
$603
Roundtrip
found 2 days ago
Select United flight, departing Mon, Apr 13 from Houston to Sofia, returning Fri, Apr 24, priced at $603 found 2 days ago
United
Mon, Nov 10 - Fri, Nov 21
IAH
Houston
SOF
Sofia
$605 Roundtrip, found 3 days ago
$605
Roundtrip
found 3 days ago
Select United flight, departing Mon, Nov 10 from Houston to Sofia, returning Fri, Nov 21, priced at $605 found 3 days ago
Air Canada
Sun, Apr 26 - Wed, May 13
IAH
Houston
SOF
Sofia
$606 Roundtrip, found 12 hours ago
$606
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sun, Apr 26 from Houston to Sofia, returning Wed, May 13, priced at $606 found 12 hours ago
United
Sun, Apr 26 - Wed, May 13
IAH
Houston
SOF
Sofia
$607 Roundtrip, found 12 hours ago
$607
Roundtrip
found 12 hours ago
Select United flight, departing Sun, Apr 26 from Houston to Sofia, returning Wed, May 13, priced at $607 found 12 hours ago
Air Canada
Sun, Apr 26 - Wed, May 13
IAH
Houston
SOF
Sofia
$608 Roundtrip, found 12 hours ago
$608
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sun, Apr 26 from Houston to Sofia, returning Wed, May 13, priced at $608 found 12 hours ago
United
Wed, Nov 12 - Fri, Nov 21
IAH
Houston
SOF
Sofia
$610 Roundtrip, found 3 days ago
$610
Roundtrip
found 3 days ago
Select United flight, departing Wed, Nov 12 from Houston to Sofia, returning Fri, Nov 21, priced at $610 found 3 days ago
British Airways
Mon, Aug 18 - Wed, Nov 26
IAH
Houston
SOF
Sofia
$615 Roundtrip, found 6 days ago
$615
Roundtrip
found 6 days ago
Select British Airways flight, departing Mon, Aug 18 from Houston to Sofia, returning Wed, Nov 26, priced at $615 found 6 days ago
Lufthansa
Sun, Apr 26 - Wed, May 13
IAH
Houston
SOF
Sofia
$645 Roundtrip, found 12 hours ago
$645
Roundtrip
found 12 hours ago
Select Lufthansa flight, departing Sun, Apr 26 from Houston to Sofia, returning Wed, May 13, priced at $645 found 12 hours ago
American Airlines
Sun, Jan 11 - Sun, Jan 18
IAH
Houston
SOF
Sofia
$662 Roundtrip, found 3 days ago
$662
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Jan 11 from Houston to Sofia, returning Sun, Jan 18, priced at $662 found 3 days ago
Flights from Houston (IAH) to Sofia (SOF)
Origin airport
George Bush Intercontinental
Destination airport
Sofia
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Emirates, KLM, Lufthansa, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$601
Distance
6088 mi

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 November. 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 $514 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.

 

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Sofia Airport (SOF) cost?
Discover the latest flight deals from IAH to SOF by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAH to SOF?
The cheapest flights from IAH to SOF are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAH to SOF?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAH to SOF. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from George Bush Intercontinental Airport (IAH) to Sofia Airport (SOF)?
Nonstop flights from George Bush Intercontinental Airport (IAH) to Sofia Airport (SOF) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAH to SOF?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Sofia Airport (SOF)?
To touch down at Sofia Airport (SOF) on time, book a flight that takes off from George Bush Intercontinental Airport (IAH) 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 George Bush Intercontinental Airport (IAH) to Sofia Airport (SOF) last-minute?
Last-minute bookings from IAH to SOF are usually more expensive. To lock in the best rates, start looking for flights well in advance. That said, if you're flexible with your travel plans, you may find a cheap fare right before your journey.
Is it cheaper to book an IAH to SOF flight and hotel package?
Securing an IAH to SOF flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our wide range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Sofia Airport (SOF)?
It's usually possible to reschedule or cancel your IAH to SOF flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.