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Cheap Flights from Belfast to Kos

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Compare Belfast International to Kos flight deals

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Flight deals from Belfast International to Kos

Looking for a cheap last-minute deal or the best return flight from Belfast International to Kos? Find the lowest prices on one-way and return tickets right here.
Kos.$267 per passenger.Departing Thu, 3 Apr, returning Wed, 9 Apr.Return flight with easyJet.Outbound indirect flight with easyJet, departs from Belfast International on Thu, 3 Apr, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Wed, 9 Apr, arriving in Belfast International.Price includes taxes and charges.From $267, select.
Kos.$272 per passenger.Departing Sun, 27 Apr, returning Sun, 4 May.Return flight with easyJet.Outbound indirect flight with easyJet, departs from Belfast International on Sun, 27 Apr, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Sun, 4 May, arriving in Belfast International.Price includes taxes and charges.From $272, select.
Kos.$483 per passenger.Departing Thu, 1 May, returning Thu, 8 May.Return flight with easyJet.Outbound indirect flight with easyJet, departs from Belfast International on Thu, 1 May, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Thu, 8 May, arriving in Belfast International.Price includes taxes and charges.From $483, select.
Kos.$491 per passenger.Departing Sat, 12 Jul, returning Sat, 19 Jul.Return flight with easyJet.Outbound indirect flight with easyJet, departs from Belfast International on Sat, 12 Jul, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Sat, 19 Jul, arriving in Belfast International.Price includes taxes and charges.From $491, select.
Kos.$495 per passenger.Departing Tue, 2 Sep, returning Tue, 9 Sep.Return flight with easyJet.Outbound indirect flight with easyJet, departs from Belfast International on Tue, 2 Sep, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Tue, 9 Sep, arriving in Belfast International.Price includes taxes and charges.From $495, select.
Kos.$557 per passenger.Departing Thu, 26 Jun, returning Fri, 4 Jul.Return flight with easyJet.Outbound indirect flight with easyJet, departs from Belfast International on Thu, 26 Jun, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Fri, 4 Jul, arriving in Belfast International.Price includes taxes and charges.From $557, select.
Kos.$566 per passenger.Departing Sat, 24 May, returning Sat, 31 May.Return flight with TUI.Outbound direct flight with TUI departs from Belfast International on Sat, 24 May, arriving in Kos.Inbound direct flight with TUI departs from Kos on Sat, 31 May, arriving in Belfast International.Price includes taxes and charges.From $566, select.
Kos.$579 per passenger.Departing Sat, 9 Aug, returning Sat, 23 Aug.Return flight with easyJet.Outbound indirect flight with easyJet, departs from Belfast International on Sat, 9 Aug, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Sat, 23 Aug, arriving in Belfast International.Price includes taxes and charges.From $579, select.

Find the cheapest month to fly from Belfast International to Kos

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Belfast International to Kos flights are currently cheapest in April.
Mar
Find prices
Apr
from $267
May
from $483
Jun
from $579
Jul
from $491
Aug
from $579
Sep
from $495
Oct
from $673
Nov
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Dec
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Jan
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Feb
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Direct flights from Belfast International to Kos

Belfast to Kos: Flight information

The things to know before you go.
Cheapest flight found$268
Cheapest month to flyApril
Average flight time4 hrs, 15 mins
Most popular airlineTUI
Average flights per week1

Finding cheap flights from Belfast International to Kos: Frequently asked questions

The best price we found for a return flight from Belfast International to Kos is $268. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 15 minutes is the average flight time from Belfast International to Kos.
TUI flies direct from Belfast International to Kos.
As of March 2025, there is one flight per week flying from Belfast International to Kos.
The cheapest month to fly from Belfast International to Kos is usually March 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Belfast International Airport to Kos Airport on Thursday, 3 April 2025.
Yes – the average flight time is 4 hours and 15 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Kos but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Kos is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, easyJet and TUI offer the cheapest flight tickets to Kos.

Flying from Belfast International Airport (BFS) to Kos Airport (KGS): what you need to know

  • If you're travelling during a bank holiday or other peak period, give yourself more time. A good general rule is two hours before domestic flights and up to four hours before international departures. Security and check-in lines will be longer.

  • If you want to break up your flight from Belfast International Airport to Kos Airport, think about adding a stopover. Just uncheck 'Direct flights only' to find a destination that appeals to you. Popular stopovers on the BFS - KGS route include:

    • London Gatwick Airport

    • Leeds Bradford International Airport

    • Stansted Airport

How to find the cheapest flights from Belfast International Airport (BFS) to Kos Airport (KGS)

  • The lowest price we've seen for a one-way ticket from Belfast International Airport to Kos Airport is $234. For a return flight on this route, the best price is $267. Depending on the availability when you book, these fares could change.

  • To pick up cheap flight tickets from BFS to KGS, book early. Airlines typically offer lower prices when flights are first released.

  • If you're willing to be flexible with your trip dates, use the 'Whole month' tool. It'll give you the cheapest price across the month when looking for a ticket from Belfast International Airport to Kos Airport.

  • Finding a cheap ticket from BFS to KGS is straightforward with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch when there's a better deal.

  • Take advantage of filters to find the right journey for you. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Belfast International Airport to Kos Airport, use the 'Sort by' tool. You can also filter by airline, arrival and departure times, and number of stops.

Handy information about Belfast International Airport (BFS)

  • Travelling from central Belfast to Belfast International Airport takes about 2 hours and 2 minutes on public transport. If you ride-share, drive or hail a cab, you'll cover the 32 kilometres in 31 minutes or so, depending on traffic.

  • Want a leisurely start to your holiday? Stay near BFS. Whether you're catching an early flight from Belfast International Airport to Kos Airport or just don't like being rushed, these hotels are the answer:

Arriving at Kos Airport (KGS)

  • If you have a late flight from Belfast International Airport to Kos Airport, nothing tops the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these options near KGS:

Getting from Kos Airport (KGS) to central Greece

  • The centre of Greece is around 434 kilometres from Kos Airport. Journey times by cab or car rental will vary based on time of day and traffic conditions, so do some research before your trip.

When to fly to Kos Airport (KGS)

  • August is the most popular month for flights from Belfast International Airport to Kos Airport. To steer clear of the crowds, go to Greece in February.

  • When reserving your flight from Belfast International Airport to Kos Airport, consider the type of weather you like. July is the warmest month in Greece, with the temperature ranging from 22ºC to 33ºC.

  • For cooler conditions, search for a cheap ticket from BFS to KGS in January. Average temperatures are between 2ºC and 13ºC then.

More about Greece

  • Start your Greece trip right by finding a great place to stay. Once you've booked your flight from BFS to KGS, explore our range of hotel options including:

  • Every great journey has to include some sightseeing. Agios Panteleimonas, Κύμα - Kyma - The wave and Τρείς μώλοι / Three piers beach are must-do's during your Greece adventure.

Plan the rest of your trip from Belfast to Kos

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.