Search for affordable fares to United Kingdom, then select “No change fee” directly under the “Flexible change policies” filter. It really is that simple. We know that things can change and flexibility is essential, so book with confidence with Expedia.

Decide on your travel dates and then take off towards United Kingdom with one of these airlines:

• British Airways - 1,354 flights to or near United Kingdom each month, including 1,219 flights to Heathrow Airport (LHR) per month.
• American Airlines - 790 flights to or near United Kingdom each month, including 790 flights to Heathrow Airport (LHR) per month.
• Virgin Atlantic - 716 flights to or near United Kingdom each month, including 624 flights to Heathrow Airport (LHR) per month.

In the last seven days, ₩689,300 was the lowest price for a flight to United Kingdom. For even bigger savings, book in advance and be flexible with your travel dates. Search for your trip to United Kingdom, then check out prices for similar time frames by clicking on the “flexible dates” link above.

One-way trips departing from Seoul (ICN) sold for as low as ₩309,000 in the last seven days. During this period, the price of a return airfare to United Kingdom varied between ₩689,300 and ₩689,300. If you spot a good deal, book quickly — these prices don’t hang around.

Fly to United Kingdom and you’ll have a few top airports to pick from. Below are three of the region’s busiest:

• Heathrow Airport (LHR) - 3,690 flights per month.
• Gatwick Airport (LGW) - 308 flights per month.
• Manchester Airport (MAN) - 173 flights per month.

If you’re not set on what day you travel to United Kingdom, fly out early on in the week. The cheapest day to take off is generally Tuesday, followed by Monday. Saturday is typically the costliest day, with lots of vacationers choosing to fly on the weekend.

In the last seven days, airfares to United Kingdom ranged between ₩689,300 and ₩689,300. The early bird catches the worm, so secure a good deal today.

If you’re eager to check out United Kingdom’s most populated city when it’s buzzing with activity, head to London sometime during March, May and September. Like most locations in the Northern Hemisphere, summer here begins June 20, with average temperatures ranging between 55ºF and 70ºF.

To grab a bargain flight to United Kingdom, try to book sometime in February when the prices are at their cheapest. When’s the most expensive time? In the United States, it’s December.