How long is the flight from Sofia to Kos?

A quick flight from Sofia to Kos can take about 6h 40m. Aegean Airlines provides one of the quickest options available for as low as £273. The distance from Sofia to Kos is about 451 mi.

In terms of precipitation, rainfall in Kos ranges from 2.0 - 169.0 inches per month. January is typically the wettest month, when rainfall can reach 169.0 mm. July is typically the driest time to visit Kos when rainfall is around 2.0 mm.

If weather is an important factor for your trip to Kos, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 10.0 C).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sofia to Kos as you normally would.

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

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

How can I find direct flights from Sofia to Kos?

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

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

Yes. Cheapflights offers flight deals from Sofia to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£67+ Cheap Flights from Sofia to Kos

Cheap flight deals from Sofia to Kos

Enter your travel dates to find the best prices.

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Cheapest flights from Sofia to Kos
Explore the most affordable flight options available from Sofia to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 September 2026.

Wed 7/1010:55 -

1 stop6h 40m

Sun 11/1006:00 -

1 stop14h 30m

Deal found 21/9£273

Find flight deals from Sofia to Kos

Round-trip from	£273
One-way from	£67

Aegean Airlines
7/10-11/10
2 total stops
21h 10m total
Sofia to Kos

Search Deals

Aegean Airlines
17/10-31/12
1 total stop
13h 40m total
Sofia to Kos

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SofiaKos

SOF Sofia - KGS Kos

SOFKGS

Sofia

Tue 20/10

10:55-17:35

1 stop6h 40m

Kos

Wed 31/12

00:00-00:00

Nonstop0h 00m

£135

SofiaKos

SOF Sofia - KGS Kos

SOFKGS

Sofia

Sun 18/10

21:20-07:45

2 stops10h 25m

Kos

Wed 31/12

00:00-00:00

Nonstop0h 00m

£167

SofiaKos

SOF Sofia - KGS Kos

SOFKGS

Sofia

Sat 17/10

10:55-07:45

2 stops44h 50m

Kos

Wed 31/12

00:00-00:00

Nonstop0h 00m

£167

SofiaKos

SOF Sofia - KGS Kos

SOFKGS

Sofia

Wed 7/10

10:55-17:35

1 stop6h 40m

Kos

Sun 11/10

06:00-20:30

1 stop14h 30m

£273

Flights are sorted by cheapest return flights first.

Deals found on 20/9

Sorted by cheapest first

Best time to book a flight from Sofia to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Sofia with our price prediction graph.

SOF-KGS

Estimated return 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.

Related info for your journey

How long is the flight from Sofia to Kos?
A quick flight from Sofia to Kos can take about 6h 40m. Aegean Airlines provides one of the quickest options available for as low as £273. The distance from Sofia to Kos is about 451 mi.
Can I find deals for flights from Sofia to Kos that include hotel bookings?
Yes. In addition to deals on Sofia to Kos flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Sofia to Kos?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sofia to Kos.
Can I find deals for business class flights from Sofia to Kos?
Yes. Cheapflights offers flight deals from Sofia to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Why should you use Cheapflights to find cheap flight tickets from Sofia to Kos?

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Can Cheapflights find flights from Sofia to Kos with no change fees?

Need flexible booking options for your flight to Kos from Sofia? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Sofia to Kos become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Kos from Sofia today and book when prices fit your budget.

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Cheap flights from Sofia to Kos from £67

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Sofia to Kos

Cheapest flights from Sofia to KosExplore the most affordable flight options available from Sofia to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 September 2026.

Explore the most affordable flight options available from Sofia to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 September 2026.

Best flights from Sofia to KosDiscover carefully curated flight deals from Sofia to Kos that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 September 2026.

Discover carefully curated flight deals from Sofia to Kos that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 September 2026.

Last-minute flights from Sofia to KosDiscover last-minute flight deals from Sofia to Kos. Data last updated 23 September 2026 and is based on user searches.

Discover last-minute flight deals from Sofia to Kos. Data last updated 23 September 2026 and is based on user searches.

One-way flights from Sofia to KosSearch for one-way flight options from Sofia to Kos. Find affordable one-way fares based on user searches. Data last updated 23 September 2026.

Search for one-way flight options from Sofia to Kos. Find affordable one-way fares based on user searches. Data last updated 23 September 2026.

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Best time to book a flight from Sofia to Kos

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Related info for your journey

How long is the flight from Sofia to Kos?

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

How can I find direct flights from Sofia to Kos?

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

Travelling to a place near Kos?

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Alternative routes for Sofia to Kos

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Complete your trip

Complete your trip to Kos by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to South Aegean

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Other flights to Kos

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Sofia and Kos flights

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Can Cheapflights notify me if prices for flights from Sofia to Kos become cheaper?

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Cheapest flights from Sofia to Kos
Explore the most affordable flight options available from Sofia to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 September 2026.

Best flights from Sofia to Kos
Discover carefully curated flight deals from Sofia to Kos that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 September 2026.

Last-minute flights from Sofia to Kos
Discover last-minute flight deals from Sofia to Kos. Data last updated 23 September 2026 and is based on user searches.

One-way flights from Sofia to Kos
Search for one-way flight options from Sofia to Kos. Find affordable one-way fares based on user searches. Data last updated 23 September 2026.