Book Cheap Flights from London to Kos from £21

How long is the flight from London to Kos?

The flight time from London to Kos is just under six hours, usually with one connection stop.

What are the most common stopovers?

Athens is the most common stopping point for flights between London and Kos. Aegean and Olympic tend to offer the most connections here.

Is there a time change from London to Kos?

Kos (GMT+2) is two hours ahead of London.

What are the most important things to pack in my suitcase when travelling to Kos?

Kos is synonymous with sunny holidays throughout the year, with mild winters and warm summers. Be sure to pack plenty of sunscreen and seasonally appropriate clothing, with at least a light jacket for cooler evenings. You'll want to bring your swimwear to make the most of the island's fabulous beaches.

Greece's own airlines generally provide the easiest transfers between London and Kos, although there are alternatives depending on when you'd like to fly. No matter what time of year you're going, Opodo always makes it easy to find the cheapest route:

• Aegean Airlines, Greece's flagship carrier.
• Olympic Air, a subsidiary of Aegean offering regional transfer flights.
• British Airways, the UK's national airline.
• Alitalia, Italy's main provider.
• KLM Royal Dutch Airlines, offering connections through Amsterdam.

The simplest way to find cheap flights between London and Kos is to use Opodo's powerful search engine. Just enter your cities and travel dates, and you'll see the cheapest airfares at the top of your screen within seconds. Scroll down for alternative departures, and you can even filter by airlines and other parameters if you wish. It's easy to see last-minute offers, as well as a range of superb airfares with each carrier.

• January sees mild weather in Kos, and is a quieter, cheaper time to visit. This can be ideal for exploring the sights of the island, including Neratzia Castle and other historic highlights.
• August is beautiful and warm in Kos, with temperatures frequently in the 30s°C, great for swimming in the pool or at the beaches.
• September still has gorgeous weather in Kos, slightly cooler and usually quieter than the main summer months.

Most flights terminating in Kos will depart from Heathrow Airport (LHR). There are also flights available from Gatwick Airport (LGW) and London City Airport (LCY).

Useful information about Heathrow Airport

Located about 15 miles west of Central London, Heathrow is served by a wide selection of fast and cost-effective transport options.

How to get to the airport:

• By tube – Piccadilly line westbound from Central London, around 45 minutes. Three stops: Heathrow Terminal 2, Heathrow Terminals 3 & 4, or Heathrow Terminal 5.
• By train – from London Paddington station on the Heathrow Express, 15 to 30 minutes.
• By taxi – at least 40 minutes, preferably longer to be sure you catch your flight.
• By coach – from Victoria Coach Station in as little as 35 minutes, always leave plenty of time for traffic.

Services: open 24/7, unlimited free Wi-Fi, large range of places to eat and shop at each terminal, baby changing facilities, outdoor smoking areas.

Useful information about Gatwick Airport

Gatwick is London's second-busiest airport, with many transport links to choose from.

• By train – Gatwick Express from London Victoria Station, around 30 minutes.
• By coach – around 90 minutes from Victoria Coach Station.
• By taxi – allow approximately two hours for traffic from the centre of London.
• Services: open 24/7, free Wi-Fi for 90 minutes, many shops and eateries, baby changing, outdoor smoking areas.

Useful information about London City Airport

London City Airport is the closest major airport to the heart of London, with quick transport links.

• By Tube – take the DLR from Liverpool Street station in just 30 minutes.
• By taxi – approximately 40 minutes from Central London.

Services: generally open from 6:30am to 10:30pm, free unlimited Wi-Fi, a choice of restaurants and shops, baby changing facilities, outdoor smoking.

Kos International Airport (KGS), the only airport on the island, is where you'll land for your Greek holiday.

Useful information about Kos International Airport

Kos International Airport is centrally located on Kos, near the village of Andimachia about 15 miles west of Kos Port.

How to get to Kos Port from the airport:

• By taxi – about 30 minutes.
• By bus – airport bus services to Kos Port, approximately 40 minutes. It generally runs from 7:55am to 7:50pm daily.

• Neratzia Castle is a remnant of medieval Kos, with great views of the port below.
• Head to the popular Paradise Beach for golden sands and turquoise waters.
• Visit the historic Tree of Hippocrates, a possible descendant of the tree under which the iconic doctor was said to give his lessons.
• Take the family for a day out at Lido Water Park in Iraklidis.
• Marvel at the incredible second-century ruins of the ancient Odeon.