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Cheap Flights from Belfast International 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.202 € per passenger.Departing Fri, 30 May, returning Sun, 1 Jun.Return flight with Ryanair.Outbound indirect flight with Ryanair, departs from Belfast International on Fri, 30 May, arriving in Kos.Inbound indirect flight with Ryanair, departs from Kos on Sun, 1 Jun, arriving in Belfast International.Price includes taxes and charges.From 202 €, select.
Kos.216 € per passenger.Departing Tue, 3 Jun, returning Sat, 7 Jun.Return flight with Ryanair.Outbound indirect flight with Ryanair, departs from Belfast International on Tue, 3 Jun, arriving in Kos.Inbound indirect flight with Ryanair, departs from Kos on Sat, 7 Jun, arriving in Belfast International.Price includes taxes and charges.From 216 €, select.
Kos.221 € 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 221 €, select.
Kos.229 € per passenger.Departing Tue, 19 Aug, returning Tue, 26 Aug.Return flight with easyJet.Outbound indirect flight with easyJet, departs from Belfast International on Tue, 19 Aug, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Tue, 26 Aug, arriving in Belfast International.Price includes taxes and charges.From 229 €, select.
Kos.232 € per passenger.Departing Sat, 31 May, returning Sat, 7 Jun.Return flight with TUI.Outbound direct flight with TUI departs from Belfast International on Sat, 31 May, arriving in Kos.Inbound direct flight with TUI departs from Kos on Sat, 7 Jun, arriving in Belfast International.Price includes taxes and charges.From 232 €, select.
Kos.242 € per passenger.Departing Thu, 11 Sep, returning Mon, 15 Sep.Return flight with easyJet.Outbound indirect flight with easyJet, departs from Belfast International on Thu, 11 Sep, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Mon, 15 Sep, arriving in Belfast International.Price includes taxes and charges.From 242 €, select.
Kos.256 € per passenger.Departing Sat, 7 Jun, returning Sat, 14 Jun.Return flight with TUI.Outbound direct flight with TUI departs from Belfast International on Sat, 7 Jun, arriving in Kos.Inbound direct flight with TUI departs from Kos on Sat, 14 Jun, arriving in Belfast International.Price includes taxes and charges.From 256 €, select.
Kos.269 € per passenger.Departing Tue, 29 Apr, returning Tue, 6 May.Return flight with Ryanair and easyJet.Outbound indirect flight with Ryanair, departs from Belfast International on Tue, 29 Apr, arriving in Kos.Inbound indirect flight with easyJet, departs from Kos on Tue, 6 May, arriving in Belfast International.Price includes taxes and charges.From 269 €, 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 June.
Apr
Find prices
May
from 221 €
Jun
from 216 €
Jul
from 297 €
Aug
from 229 €
Sep
from 242 €
Oct
from 290 €
Nov
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Dec
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Jan
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Feb
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Mar
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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 found202 €
Cheapest month to flyMay
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 202 €. 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 April 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 April 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 Friday, 30 May 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, Ryanair and TUI offer the cheapest flight tickets to Kos.

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

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Make sure you're at the airport on time to catch your BFS to KGS flight.

  • Heading off during a peak period like public or school holidays? Expect longer queues at check-in and security. To be on the safe side, arrive up to four hours before international flights and two hours before domestic departures.

  • We make it easy to book a flight with a stopover. To see your options for tickets from Belfast International Airport to Kos Airport, deselect 'Direct flights only.' Then, choose a flight offering a stop long enough to visit your chosen city. Top stopovers between BFS and KGS include:

    • Leeds Bradford International Airport

    • Edinburgh Airport

    • Stansted Airport

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

  • The lowest price we've found for a one-way Belfast International Airport to Kos Airport flight is 84 €. A round-trip plane ticket right now is 202 €. Depending on the availability and when you book, these fares may change.

  • It's usually smart to book in advance if you want to find cheap tickets from BFS to KGS. That's because airlines adjust prices based on demand, which tends to increase closer to departure.

  • If you're flexible with your travel dates, use the 'Whole month' search function. It'll give you the cheapest price in every month when looking for a flight from Belfast International Airport to Kos Airport.

  • Never miss a deal on cheap flights from BFS to KGS by creating a Price Alert. You'll get an email or notification through the app when a special offer becomes available.

  • Lock in the perfect flight for you by using the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Belfast International Airport to Kos Airport, use the 'Sort by' tool. You can also filter results by departure and arrival times, airline, and number of stops.

Handy information about Belfast International Airport (BFS)

  • 67.55% of flights that depart Belfast International Airport arrive at their destination on schedule.

  • Belfast International Airport is about 32 kilometres from central Belfast. If you're catching a cab, ride-sharing or driving from the centre, it'll take 30 minutes or so to get there, depending on the traffic.

  • You can expect a journey time of roughly 2 hours on public transport.

  • Get your journey off to a hassle-free start by staying near BFS. Whether you're boarding an early flight from Belfast International Airport to Kos Airport or just don't want to be rushed, these stays are the answer:

Arriving at Kos Airport (KGS)

  • To get the best deal, reserve your ride from Kos Airport about three weeks before you travel.

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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.