€15 Cheap flights to the United Kingdom

United Kingdom is full of notable places to explore, many with significant historical value to the region and the world. Some of the most popular landmarks in United Kingdom are Hyde Park, Sondheim Theatre, Leicester Square, and Marble Arch, among many more.

Flying into London Heathrow Airport is typically the best way to visit Hyde Park, since it is the closest airport to the area.

Ryanair is the most popular airline offering flights to United Kingdom, with 57% of our users opting to fly with them when travelling to United Kingdom. Other popular options include Aer Lingus and British Airways. There are a total of 3 different airlines flying to United Kingdom.

If you’re unsure where to fly to in United Kingdom, we recommend booking a flight that arrives at the popular London Heathrow airport, which services London and its surrounding areas. In the last 12 months, 28% of momondo travellers booking flights to United Kingdom chose to fly into London Heathrow.

You can expect to spend an average of €389 for a flight to United Kingdom. However, our users found flights to United Kingdom for €16, which is the cheapest price we’ve seen in the past week. €8,320 per ticket tends to be the most expensive a flight to United Kingdom will get, whereas anything for €282 or less is considered a good deal.

The best day to take a flight to United Kingdom is on Friday, followed by Saturday. Friday and Saturday tend to have the lowest flight prices to United Kingdom. If your travel dates are flexible, then try to avoid booking on a Monday, which is known for being the most expensive day of the week to fly to United Kingdom.

If you're headed to United Kingdom, consider flying into London Heathrow airport in London for the best deals, with an average airfare of €16. Alternatively, Edinburgh Turnhouse airport in Edinburgh is a close second for cheapest flights to United Kingdom with an average airfare of €17.

Prices for flights to United Kingdom are refreshed on a daily basis.

The number of operators available for flights to United Kingdom is 6 as of August 2026.

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel to United Kingdom.

The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.