$356 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, Buckingham Palace, Wembley Stadium, and Piccadilly Circus, among many more.

When visiting Hyde Park in London, the closest airport is London Heathrow Airport.

Of the 25 airlines that fly to United Kingdom, British Airways, United Airlines and Delta happen to be the most favored based on our user data. British Airways is the most popular among the three airlines, with 47% of users choosing them for their travels to United Kingdom.

According to our data, 32% of momondo users who traveled to United Kingdom in the last year flew into London Heathrow (located in London), making it the most popular airport to fly to. There may be other airports in United Kingdom, but the majority of our users take flights to London Heathrow in order to visit London and it’s surrounding areas.

The cheapest flight to United Kingdom recently found on momondo was $99. If you’re unable to find a flight deal this cheap, keep in mind that anything less than $1,572 is considered a good price for flights to United Kingdom. $1,836 is the average cost to fly to United Kingdom, while $33,098 is the most expensive.

The best day of the week to fly to United Kingdom is Wednesday due to prices being at their lowest. Flying out on a Tuesday should be a backup plan since this day tends to be less expensive as well. Saturday, on the other hand, is the most expensive day to fly to United Kingdom.

When traveling to United Kingdom, London Heathrow airport in London offers the cheapest overall flights with an average airfare of $99, while the second most affordable option is Glasgow Intl airport with an average airfare of $308 for Glasgow.

Prices for flights to United Kingdom are updated daily.

As of December 2025, there are 100 operators available to choose from for flights to United Kingdom.

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to United Kingdom.

The travel and health documents you'll need for your trip to United Kingdom may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United Kingdom. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.