Finding cheap flights to South Korea is often easier when the search covers more than one arrival point and a range of dates. Seoul may offer the widest choice of itineraries, while Busan or Cheongju could work well if the final destination is closer to either city. Comparing the total journey is important, as a lower fare can lose its value if it involves a long connection or costly onward travel.

Prices can reflect demand around Korean public holidays such as Chuseok, as well as popular periods for spring blossom and autumn foliage. Travelling just outside these busy dates may open up more competitive fares, although flexibility is more useful than assuming one particular month or booking day will always be cheapest. Midweek departures, different trip lengths and nearby return dates are all worth including in a search.

London airports can provide a broader range of flight combinations, but checking departures from regional UK airports may uncover a worthwhile alternative once rail travel, parking and transfers are included. It is also sensible to compare direct and connecting options, baggage allowances and the airport used on the return journey, particularly when choosing between Seoul, Busan and Cheongju.

Comparing flights to South Korea from the UK involves more than looking at the headline fare. Consider the complete journey from your nearest UK airport, including the ease and cost of reaching the departure airport, the number of connections, the time between flights and whether baggage is checked through. A regional departure may be convenient, while a London departure could offer a wider choice of itineraries; the best option depends on the overall journey rather than the first fare displayed.

Seoul is the most straightforward choice for travellers whose plans centre on the capital, with extensive onward rail and road connections. Check which Seoul-area airport your itinerary uses, as the transfer into the city and the onward journey can differ. Busan is worth comparing when it is your final base in the southeast, since arriving closer to your destination may be preferable to travelling onwards from Seoul. Cheongju can be useful for plans in central South Korea, although you should check the available onward transport and allow for an additional transfer if your accommodation is elsewhere.

When comparing routes, look beyond flight time: airport changes during a connection, overnight waits, separate-ticket transfers and the timing of the final arrival can all affect convenience. A slightly longer itinerary may be preferable if it uses one booking and arrives at the airport best suited to your chosen destination.