$1,043 Cheap Flights from Sofia (SOF) to Kailua-Kona (KOA)

View $1,043 flight on Sat, Dec 13, 2025Opens in a new window

Popular airlines from Sofia Airport (SOF) to Kona Intl. Airport (KOA)

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Cheap Flights from Sofia to Kailua-Kona (SOF-KOA)

Prices were available within the past 7 days and start at $1,043 for one-way flights and $1,419 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,419 Roundtrip, found 22 hours ago
$1,419
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,419 found 22 hours ago
United
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,429 Roundtrip, found 22 hours ago
$1,429
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,429 found 22 hours ago
United
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,459 Roundtrip, found 22 hours ago
$1,459
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,459 found 22 hours ago
Lufthansa
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,483 Roundtrip, found 22 hours ago
$1,483
Roundtrip
found 22 hours ago
Select Lufthansa flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,483 found 22 hours ago
Lufthansa
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,490 Roundtrip, found 22 hours ago
$1,490
Roundtrip
found 22 hours ago
Select Lufthansa flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,490 found 22 hours ago
American Airlines
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,509 Roundtrip, found 22 hours ago
$1,509
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,509 found 22 hours ago
American Airlines
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,514 Roundtrip, found 22 hours ago
$1,514
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,514 found 22 hours ago
Lufthansa
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,523 Roundtrip, found 22 hours ago
$1,523
Roundtrip
found 22 hours ago
Select Lufthansa flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,523 found 22 hours ago
Bulgaria Air
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,614 Roundtrip, found 22 hours ago
$1,614
Roundtrip
found 22 hours ago
Select Bulgaria Air flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,614 found 22 hours ago
Qatar Airways
Sat, Dec 13 - Sat, Dec 27
SOF
Sofia
KOA
Kona Coast
$1,624 Roundtrip, found 22 hours ago
$1,624
Roundtrip
found 22 hours ago
Select Qatar Airways flight, departing Sat, Dec 13 from Sofia to Kona Coast, returning Sat, Dec 27, priced at $1,624 found 22 hours ago
Flights from Sofia (SOF) to Kailua-Kona (KOA)
Origin airport
Sofia
Destination airport
Kona Intl.
Airlines serving
KLM, United
Roundtrip price
$1,418
Distance
8123 mi

Sofia to Kailua-Kona Flights

The cheapest times to fly from Sofia to Kailua-Kona

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 Sofia to Kailua-Kona are during the month of December. You can find some of the cheapest flights from Sofia to Kailua-Kona with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sofia to Kailua-Kona

Sunday is one of the best days to book for cheap flights from Sofia to Kailua-Kona: 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 Sofia to Kailua-Kona

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 Sofia to Kailua-Kona in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,043 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 Sofia to Kailua-Kona 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 Sofia to Kailua-Kona 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 Sofia Airport (SOF) to Kona Intl. Airport (KOA) cost?
Get a cheap one-way flight from $1,043 or cheap return flight from $1,419 from Sofia Airport (SOF) to Kona Intl. Airport (KOA) 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 Sofia Airport (SOF) to Kona Intl. Airport (KOA)?
Planning your trip for December is a great way to save, as it's the cheapest month for flights between SOF and KOA. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Sofia Airport (SOF) to Kona Intl. Airport (KOA)?
To find the cheapest airline that'll fly you from SOF to KOA, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Sofia Airport (SOF) to Kona Intl. Airport (KOA)?
There are no daily direct flights departing from Sofia Airport (SOF) to Kona Intl. Airport (KOA). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from SOF to KOA?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sofia Airport (SOF) to Kona Intl. Airport (KOA)?
Book a flight from Sofia Airport (SOF) to Kona Intl. Airport (KOA) that takes off before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**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 Sofia Airport (SOF) to Kona Intl. Airport (KOA) last-minute?
Last-minute bookings from SOF to KOA are typically more expensive. For the lowest prices, start looking for flights well ahead of time. That being said, if you're flexible with your travel dates, it's possible to score a cheap ticket just before your departure.
Is it cheaper to book a SOF to KOA flight and hotel package?
Compared with arranging hotels and flights separately, booking a SOF to KOA flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place will take the stress out of planning your trip. Simply pick your flights and select from our wide range of stays, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Sofia Airport (SOF) to Kona Intl. Airport (KOA)?
Typically, you're able to cancel or reschedule your SOF to KOA flight. However, additional fees may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you'd like further information, visit our Customer Service portal.

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*Available to One Key members.