$175 Cheap Flights from Sofia (SOF) to Reykjavik (KEF)

View $175 flight on Thu, Feb 19, 2026Opens in a new window

Popular airlines from Sofia Airport (SOF) to Reykjavik–Keflavik Intl. Airport (KEF)

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Cheap Flights from Sofia to Reykjavik (SOF-KEF)

Prices were available within the past 7 days and start at $175 for one-way flights and $275 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Sat, Jun 13 - Thu, Jun 18
SOF
Sofia
KEF
Reykjavik
$275 Roundtrip, found 2 hours ago
$275
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Sat, Jun 13 from Sofia to Reykjavik, returning Thu, Jun 18, priced at $275 found 2 hours ago
Lufthansa
Sat, Jun 13 - Thu, Jun 18
SOF
Sofia
KEF
Reykjavik
$293 Roundtrip, found 2 hours ago
$293
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Sat, Jun 13 from Sofia to Reykjavik, returning Thu, Jun 18, priced at $293 found 2 hours ago
Lufthansa
Sat, Jun 13 - Thu, Jun 18
SOF
Sofia
KEF
Reykjavik
$309 Roundtrip, found 2 hours ago
$309
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Sat, Jun 13 from Sofia to Reykjavik, returning Thu, Jun 18, priced at $309 found 2 hours ago
LOT-Polish Airlines
Sat, Dec 13 - Thu, Dec 25
SOF
Sofia
KEF
Reykjavik
$310 Roundtrip, found 3 days ago
$310
Roundtrip
found 3 days ago
Select LOT-Polish Airlines flight, departing Sat, Dec 13 from Sofia to Reykjavik, returning Thu, Dec 25, priced at $310 found 3 days ago
Lufthansa
Sat, Jun 13 - Thu, Jun 18
SOF
Sofia
KEF
Reykjavik
$310 Roundtrip, found 2 hours ago
$310
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Sat, Jun 13 from Sofia to Reykjavik, returning Thu, Jun 18, priced at $310 found 2 hours ago
Lufthansa
Fri, Nov 28 - Sat, Dec 6
SOF
Sofia
KEF
Reykjavik
$313 Roundtrip, found 2 days ago
$313
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Fri, Nov 28 from Sofia to Reykjavik, returning Sat, Dec 6, priced at $313 found 2 days ago
Lufthansa
Sat, Jun 13 - Thu, Jun 18
SOF
Sofia
KEF
Reykjavik
$327 Roundtrip, found 2 hours ago
$327
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Sat, Jun 13 from Sofia to Reykjavik, returning Thu, Jun 18, priced at $327 found 2 hours ago
Austrian Airlines
Fri, May 15 - Tue, May 19
SOF
Sofia
KEF
Reykjavik
$346 Roundtrip, found 5 days ago
$346
Roundtrip
found 5 days ago
Select Austrian Airlines flight, departing Fri, May 15 from Sofia to Reykjavik, returning Tue, May 19, priced at $346 found 5 days ago
British Airways
Mon, Dec 1 - Sat, Dec 6
SOF
Sofia
KEF
Reykjavik
$393 Roundtrip, found 3 days ago
$393
Roundtrip
found 3 days ago
Select British Airways flight, departing Mon, Dec 1 from Sofia to Reykjavik, returning Sat, Dec 6, priced at $393 found 3 days ago
Swiss International Air Lines
Wed, Jul 1 - Sun, Jul 5
SOF
Sofia
KEF
Reykjavik
$635 Roundtrip, found 1 day ago
$635
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Wed, Jul 1 from Sofia to Reykjavik, returning Sun, Jul 5, priced at $635 found 1 day ago

Alternative airports near Reykjavik

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

Select flight to Keflavik Intl. KEF. Cheapest option available. Average driving time to city center is 45 minutes. Flights from $710
KEF
Keflavik Intl.
Cheapest
Average driving time to city center45 min
Flights from $710

Frequently asked questions

How much does a flight from Sofia Airport (SOF) to Keflavik Intl. Airport (KEF) cost?
Lock in a cheap one-way flight from $175 or cheap return flight from $275 from Sofia Airport (SOF) to Keflavik Intl. Airport (KEF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Sofia Airport (SOF) to Keflavik Intl. Airport (KEF)?
The cheapest month to fly from SOF to KEF is June, when demand is low. Off-peak season is generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Sofia Airport (SOF) to Keflavik Intl. Airport (KEF)?
To find the cheapest airline that'll fly you from SOF to KEF, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Sofia Airport (SOF) to Keflavik Intl. Airport (KEF)?
Nonstop flights from Sofia Airport (SOF) to Keflavik Intl. Airport (KEF) 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 dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SOF to KEF?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary based 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 Sofia Airport (SOF) to Keflavik Intl. Airport (KEF)?
To avoid possible delays on the Sofia Airport (SOF) to Keflavik Intl. Airport (KEF) route, travel before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**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 Keflavik Intl. Airport (KEF) last-minute?
Booking your plane ticket from SOF to KEF just before your trip is generally more expensive. However, if there's some wiggle room with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a SOF to KEF flight and hotel package?
You'll generally save money by securing a SOF to KEF 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 chosen your preferred accommodations and flights, you can add extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Sofia Airport (SOF) to Keflavik Intl. Airport (KEF)?
In most cases, you can cancel or reschedule your SOF to KEF flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you need further details, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Sofia
Destination airport
Keflavik Intl.
Airlines serving
Austrian Airlines, British Airways, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$274
Distance
2319 mi

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Sofia to Reykjavik Flights

The cheapest times to fly from Sofia to Reykjavik

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

 

The best time to book a flight from Sofia to Reykjavik

Sunday is one of the best days to book for cheap flights from Sofia to Reykjavik: 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 Reykjavik

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 Reykjavik in 2025. You can also book with separate airlines for your outbound and return journeys, from $175 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 Reykjavik 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 Reykjavik 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.

 

Sofia to Reykjavik Flights

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