Cheap Flights from Kos (KGS) to Belfast (BELF)

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Travellers and cabin class, 1 Adult, Economy

Compare Kos to Belfast flight deals

Find the cheapest month or even day of the year to fly to Belfast

Book the best Belfast fare with no extra fees

Flight deals Cheapest month Find the best route Route info FAQs Tips and advice

Flight deals from Kos to Belfast

Looking for a cheap last-minute deal or the best return flight from Kos Airport to Belfast? If you want to travel next month, return fares start from £122. Find the lowest prices on one-way and return tickets right here.

Belfast.£60 per passenger.Departing Thu, 10 Sep.One-way flight with TUI.Outbound indirect flight with TUI, departs from Kos on Thu, 10 Sep, arriving in Belfast International.Price includes taxes and charges.From £60, select.

Belfast.£63 per passenger.Departing Wed, 7 Oct.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from Kos on Wed, 7 Oct, arriving in Belfast International.Price includes taxes and charges.From £63, select.

Belfast.£95 per passenger.Departing Sat, 22 Aug.One-way flight with easyJet.Outbound indirect flight with easyJet, departs from Kos on Sat, 22 Aug, arriving in Belfast International.Price includes taxes and charges.From £95, select.

Belfast.£133 per passenger.Departing Sat, 15 May.One-way flight with TUI.Outbound direct flight with TUI departs from Kos on Sat, 15 May, arriving in Belfast International.Price includes taxes and charges.From £133, select.

Belfast.£154 per passenger.Departing Sat, 24 Jul.One-way flight with easyJet.Outbound indirect flight with easyJet, departs from Kos on Sat, 24 Jul, arriving in Belfast International.Price includes taxes and charges.From £154, select.

Belfast.£158 per passenger.Departing Sat, 26 Jun.One-way flight with TUI.Outbound direct flight with TUI departs from Kos on Sat, 26 Jun, arriving in Belfast International.Price includes taxes and charges.From £158, select.

Belfast.£164 per passenger.Departing Sat, 19 Sep.One-way flight with TUI.Outbound direct flight with TUI departs from Kos on Sat, 19 Sep, arriving in Belfast International.Price includes taxes and charges.From £164, select.

Belfast.£245 per passenger.Departing Sat, 22 Aug.One-way flight with TUI.Outbound direct flight with TUI departs from Kos on Sat, 22 Aug, arriving in Belfast International.Price includes taxes and charges.From £245, select.

Find the cheapest month to fly from Kos to Belfast

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kos to Belfast flights are currently cheapest in September.

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Direct flights from Kos to Belfast

Alternative Kos to Belfast routes

Looking for the cheapest, fastest or easiest route from Kos to Belfast? You could fly into the following airports instead.

Belfast City

2 miles from central Belfast

Closest

from £77

Search flights

Belfast International

12 miles from central Belfast

Cheapest

from £60

Search flights

Kos to Belfast: Flight information

The things to know before you go.

Cheapest flight found	£60
Cheapest month to fly	September
Average flight time	4 hrs, 45 mins
Most popular airline	TUI
Average flights per week	2

Finding cheap flights from Kos to Belfast: Frequently asked questions

How many airports are there in Belfast?

There are 2 airports in Belfast: Belfast City and Belfast International.

How much are return flights from Kos to Belfast?

The best price we found for a return flight from Kos to Belfast is £122. 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.

How long does it take to fly from Kos to Belfast?

4 hours and 45 minutes is the average flight time from Kos to Belfast.

Which airlines fly direct from Kos to Belfast?

TUI flies direct from Kos to Belfast.

How many flights are there a week from Kos to Belfast?

As of August 2026, there are 2 flights per week flying from Kos to Belfast.

When is the cheapest time to fly from Kos to Belfast?

The cheapest month to fly from Kos to Belfast is usually September.

Which is the cheapest airport to fly into in Belfast?

If you're flying from Kos Airport, the cheapest airport near Belfast is Belfast International – which is 12.2 miles away from the centre of Belfast. We've found flights into this airport from £122.

Which upcoming date is cheapest to fly from Kos Airport to Belfast on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kos Airport to Belfast on Tuesday, 15 September 2026.

Can I get a direct flight from Kos Airport to Belfast?

Yes – the average flight time is 4 hours and 45 minutes.

How can I get the best flight deal from Kos Airport to Belfast?

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 Belfast 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.

When is the best time to book flights to Belfast?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Belfast is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Belfast?

In August, the average temperature is usually around 14°C. August is typically the warmest month in Belfast, when it usually averages around 17°C. You can expect the least rain in May. The coldest month is January, with temperatures averaging 4°C. The rainiest month is October.

Which is the cheapest airline to fly from Kos Airport to Belfast with?

Currently, Ryanair offers the cheapest flight tickets to Belfast.

Travelling from Kos Airport (KGS) to Belfast: what you need to know

To avoid rushing for your KGS to Belfast flight, leave plenty of time for things like check-in and baggage drop. Arriving two hours ahead of international departures and one hour before domestic flights is the general rule.
We make it easy to book plane tickets from KGS to Belfast with a stopover. To see your options, uncheck 'Direct flights only.' Next, choose a flight that has a stop long enough to tour the city of your choice. The most sought-after stopovers include:
- London Heathrow Airport (LHR)
- Amsterdam Airport Schiphol (AMS)
- Frankfurt Airport (FRA)
89.58% of flights departing from Kos Airport reach their destination as planned. Given its reliable on-time performance, delays are unlikely when jetting out of KGS.

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

The lowest price we've seen for a one-way Kos Airport to Belfast flight is £60. The cheapest price for a return flight is £122. Keep in mind fares can change due to availability at the time of booking.
Don't leave everything to the last moment. You're more likely to land cheap flights from KGS to Belfast if you book in advance. Airlines often offer some excellent early bird rates.
The 'Whole month' tool will show you the cheapest tickets from Kos Airport to Belfast across every month. It's a great way to find a bargain if your plans aren't set in stone.
Snapping up a cheap flight from KGS to Belfast is a breeze with Price Alerts. All you need to do is create one of these automatic notifications and we'll notify you when the price has dropped.
Choose your preferred arrival and departure times, number of stops and airlines with our filters. Then, sort the results for your flight from Kos Airport to Belfast by 'Fastest,' 'Best' or 'Cheapest.'

Airports in Belfast

Belfast International Airport (BFS)

Belfast International Airport (BFS) is around 20 miles from central Belfast. If you're catching a cab or a ride-share, the drive will take roughly 30 minutes.
If you're using public transport, expect a journey time of around 2 hours.
If you have a late flight from Kos Airport to Belfast, few things beat the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and resting not long after at one of these accommodation options near BFS:
Grab a Belfast International Airport rental car and explore Belfast and beyond with your own set of wheels. Budget, Drivalia and Dollar are well-known companies to choose from here.
Get the best deal by reserving your ride from Belfast International Airport about three weeks ahead of your flight from KGS to Belfast.

George Best Belfast City Airport (BHD)

After your flight from Kos Airport to Belfast has hit the runway, you can get to the city centre in around 10 minutes by car. Central Belfast is roughly 5 miles from George Best Belfast City Airport (BHD).
If you choose to travel on public transport, you'll reach the centre in 20 minutes or so.
There are some comfortable places to rest your head close to BHD. Settle in and get cosy after your KGS to Belfast flight at any of these perfectly located options:
The fastest way to get to where you're going is with a George Best Belfast City Airport rental car. Grab your wheels from Budget, Sixt or Alamo and get going in the blink of an eye.
Get the pick of the lot. Securing your ride from BHD two weeks ahead of time often means more savings and a greater selection of vehicles.

Best time to go to Belfast

Carefully consider your dates before locking in your flight from Kos Airport to Belfast. The city buzzes in peak season, but hotel rates are generally higher and attractions can be busy. Visit Belfast in the off-season for a quieter vibe.
Lock in a Kos Airport to Belfast plane ticket with a departure in July if you want to experience the city during its warmest month. Expect temperatures to range from 10ºC (50ºF) to 19ºC (66ºF).
Look for cheap tickets from KGS to Belfast in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 1ºC (34ºF) and 8ºC (46ºF) on average.

More about Belfast

Start your Belfast trip off on the right foot by choosing the ideal place to stay. After booking your flight from Kos Airport to Belfast, browse our selection of hotels including:
There are so many things to see and do in this city it can be hard to know where to begin. Crumlin Road Gaol Visitor Attraction and Conference Centre, Titanic Belfast and Botanic Gardens are popular attractions which should be on any good Belfast itinerary.

Explore more of United Kingdom

Belfast has its own special appeal, but there are so many other corners of United Kingdom just waiting to be discovered. Around 220 miles south-east of Belfast, a trip to Birmingham will keep your itinerary packed. Start with popular sights like Cadbury World, The Library of Birmingham and National Sea Life Centre.
Around 260 miles south-east of Belfast, Bristol is another favourite stop in United Kingdom. Start your sightseeing at Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.