Cheap Flights from London to Seoul — $421

The London — Seoul route is served by a wide range of airlines: 12 in total, including Korean Air, Asiana Airlines, Virgin Atlantic, Xiamen Airlines, China Southern Airlines, Wizz Air, Wizz Air, China Eastern Airlines, Shenzhen Airlines, Mokulele Airlines, Air India, and Norwegian Air International. Competition among carriers gives passengers the opportunity to find tickets at attractive fares — with prices starting from $421. Our service helps compare all available offers within seconds and choose the most convenient option. You can filter flights by price, departure time, or baggage rules to make your trip as comfortable as possible. With so many airlines, there’s always a chance to catch special promotions and save.

Heathrow (LHR) is London’s primary international hub and typically handles long-haul and premium carriers, including major network airlines and many transatlantic services. It’s about 15–20 miles west of central London; the Heathrow Express is the fastest transfer to Paddington (roughly 15–25 minutes) while the London Underground’s Piccadilly Line takes around 45–60 minutes — fares can vary from premium express ticket prices down to standard tube fares. Taxis and app-based rideshares usually take 30–60 minutes depending on traffic. Pros: wide range of shops, lounges and nonstop global connections. Cons: can be busy with longer security and transfer times during peak periods. Gatwick (LGW) functions as a major secondary international airport and often serves a mix of full-service and many low-cost carriers, with frequent European and leisure routes. Located about 25–30 miles south of central London, the Gatwick Express to Victoria is typically 30 minutes, while regular trains may take 30–50 minutes; expect a range of ticket prices from budget fares to faster premium options. Coach services are usually cheaper but slower, and car journeys depend heavily on traffic. Pros: compact layout with two terminals and many budget-friendly routes. Cons: fewer nonstop long-haul services than Heathrow and potentially longer public-transfer variability. Stansted (STN) is typically positioned as a budget and short-haul international airport, popular with low-cost carriers serving Europe. It lies roughly 30–40 miles northeast of central London; Stansted Express trains reach Liverpool Street in about 45–50 minutes, with cheaper bus and coach options taking longer. Road travel can take 45–90 minutes depending on traffic. Pros: generally lower fares on point-to-point European routes and a single-terminal layout that simplifies connections. Cons: fewer amenities than larger hubs and longer transfer distances for some central destinations. Luton (LTN) serves mainly low-cost and leisure operators and can be a cost-effective option for short-haul travel to and from London. The airport sits around 30–35 miles northwest of central London; express and shuttle trains plus buses connect to central stations in roughly 35–70 minutes with budget-friendly fares. Driving or taxis may take 40–80 minutes subject to congestion. Pros: typically lower ticket prices and straightforward low-cost carrier services. Cons: shuttle transfers from the station and more limited terminal facilities compared with larger airports. London City (LCY) is a compact, centrally located airport that usually caters to business travelers and short-haul flights, often served by business-focused and regional carriers. It’s just 6–9 miles east of the City of London; the Docklands Light Railway (DLR) links the airport to Canary Wharf and central London in about 15–25 minutes, and taxis are generally quick for short trips. Pros: minimal transfer times to many financial districts and a small, efficient terminal. Cons: limited long-haul options and stricter aircraft size restrictions that can mean fewer low-cost choices.

Seoul is served primarily by two airports with distinct roles. Incheon International (ICN) functions as the city’s main international hub, handling most long-haul and transfer traffic and hosting full-service carriers like Korean Air and Asiana alongside many global airlines; it is generally perceived as mid-to-upper range for convenience due to its extensive facilities. ICN sits about 48 km west of central Seoul, reachable by AREX express (around 45–60 minutes, fare typically mid-range) or airport buses/taxis (60–90 minutes depending on traffic, fares varying). Gimpo Airport (GMP) acts as a nearer domestic and short-haul gateway, favored by budget and legacy carriers on regional routes; it’s roughly 15 km from downtown, usually 20–40 minutes by subway or 30–50 minutes by road. Pros: ICN offers modern amenities and strong transfer connections; cons: longer transfer time to the city. GMP’s advantage is proximity and quicker city access, though it has fewer international options.