The best time to book a flight to Seoul with Asiana Airlines is 70 days before departure. On average, fares are higher if you book 12 days before departure.
For Economy class flights, the cheapest month to fly this route is April. The most expensive months are July and December.
The most Asiana Airlines flights from LHR to SEL are scheduled on a Monday (1 on average). You will have fewer Asiana Airlines flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
In terms of precipitation, rainfall in Seoul ranges from 27.0 - 253.0 inches per month. July is typically the wettest month, when rainfall can reach 253.0 mm. December is typically the driest time to visit Seoul when rainfall is around 27.0 mm.
If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).
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