London to Seoul is a long-haul route with a real choice: fly non-stop from Heathrow in around 11½ to 12½ hours, or save money on a one-stop itinerary through Europe, the Gulf or a Chinese hub. This guide covers who actually flies the route, what a fair return fare looks like in pounds, and when to book for the best price.
Route: London (LHR) → Seoul Incheon (ICN)
Distance: approximately 8,880 km (5,520 miles)
Non-stop flight time: about 11h 30m eastbound, a little longer coming back
Direct flights: Yes — Korean Air, Asiana Airlines and Virgin Atlantic fly non-stop from Heathrow. (British Airways does not currently fly this route non-stop.) One-stop options are usually cheaper.
Fares from London to Seoul (GBP)
Seoul is a year-round destination, but fares swing with the seasons. The cherry-blossom weeks in early April, the autumn colours in October, the summer school holidays and the Christmas peak are the priciest; the coldest winter weeks (outside Lunar New Year) are the cheapest. The figures below are typical economy return fares in pounds — the lowest are usually one-stop itineraries, with the non-stops sitting toward the higher end.
| Month | Demand | What to expect |
|---|---|---|
| January | — | low-medium |
| February | — | medium (Lunar New Year) |
| March | — | medium-high |
| April | — | high (cherry blossom) |
| May | — | medium |
| June | — | medium |
| July | — | high (summer holidays) |
| August | — | high (summer holidays) |
| September | — | medium |
| October | — | high (autumn colours) |
| November | — | medium |
| December | — | very high (holidays) |
Checked against every return fare on sale as we write, a strong one-stop fare lands around £440–£490 — and that band is the market, not a deal: the connecting median is £446 and the floor £436, almost all of it Chinese carriers out of Gatwick. So a fare in the mid-440s is the going rate and under about £440 is as good as it gets. The non-stop is a different tier: the only direct fares we could price were Virgin Atlantic at a flat £865 from Heathrow, roughly double the connection.
Airlines on this route
Non-stop (about 11½ hours):
- Korean Air — non-stop Heathrow → Incheon; the Korean flag carrier, modern 787 and A350 cabins.
- Asiana Airlines — non-stop from Heathrow; well-rated service (Asiana is in the process of integrating into Korean Air).
- Virgin Atlantic — non-stop from Heathrow, a daily service launched in 2026, handy for Flying Club members.
One-stop (usually the cheapest, about 15–20 hours total):
- Finnair via Helsinki — historically one of the shortest connections between Europe and northeast Asia.
- Turkish Airlines via Istanbul and Lufthansa via Frankfurt or Munich — frequent, full-service one-stops.
- Chinese carriers such as Air China (via Beijing) and China Eastern (via Shanghai) — typically the lowest headline fares.
- Emirates via Dubai and Qatar Airways via Doha — a longer routing, but often good value with strong economy cabins.
Because the one-stop carriers compete hard, they usually undercut the non-stops by £50–£150. If time matters more than money, book a non-stop from Heathrow; if price is the priority, a single stop is the sweet spot.
When to book & how to save
- Book 2–4 months ahead for the best balance of price and choice; long-haul fares to Seoul rarely get cheaper in the last few weeks.
- Avoid the peaks if you can: early April (cherry blossom), the summer holidays and Christmas/New Year are the busiest and most expensive.
- Travel in late winter (January–February) for the lowest fares, steering clear of the Lunar New Year week when Korean demand spikes.
- Check checked-bag rules: the non-stops and Gulf carriers usually include a generous 30 kg or two pieces, but the cheapest “light” long-haul fares may not — compare the all-in price.
- Consider premium economy on this route — on a 12-hour flight the step up is often better value than a marginally cheaper connection.
Arriving in Seoul
All non-stop flights land at Incheon International (ICN), about 50 km west of central Seoul and regularly rated one of the world’s best airports. The fastest way in is the AREX Airport Railroad: the all-stop train reaches central Seoul in around 60 minutes for a couple of pounds, while the direct express to Seoul Station takes about 45 minutes. Airport limousine buses and a metered taxi (roughly £40–£60 to the centre) are the other options. A handful of regional flights use the older Gimpo (GMP) airport, much closer to the city.
Frequently asked questions
How long is the flight from London to Seoul?
Non-stop flights take about 11 hours 30 minutes eastbound (London to Seoul) and a little longer coming back against the winds, up to around 12½ hours. One-stop itineraries through Helsinki, Istanbul or a Chinese hub typically take 15 to 20 hours in total.
Are there direct flights from London to Seoul?
Yes. Korean Air, Asiana Airlines and Virgin Atlantic fly non-stop from London Heathrow to Seoul Incheon. British Airways does not currently operate this route non-stop. If you’d rather save money, one-stop flights with Finnair, Turkish Airlines or a Chinese carrier are usually cheaper.
How much does it cost to fly from London to Seoul?
A typical connecting economy return runs about £440–£460, median £446, with the connections spanning £436–£801. The non-stop fares we could price were £865. The April, summer and December peaks push everything toward the top.
What is the cheapest month to fly from London to Seoul?
January and February are usually the cheapest — just avoid the Lunar New Year week. In the dates we could price, connecting returns started at £436 and the non-stop was £865. Steer clear of early April (cherry blossom), the summer holidays and Christmas, which are the busiest and most expensive.
Which airlines fly from London to Seoul?
Non-stop: Korean Air, Asiana Airlines and Virgin Atlantic from Heathrow — in our fare data the only directs were Virgin Atlantic’s, at £865. One-stop, cheapest first and almost all from Gatwick: China Southern (£436–£458), Air China (£444–£458, behind three-quarters of the cheap fares), then LOT (£701–£735) and Lufthansa (£801). Finnair via Helsinki and Turkish Airlines via Istanbul also sell the route but did not appear among the cheapest fares when we checked. The Chinese carriers really do offer the lowest fares — check transit-visa rules for your passport before booking one.
Which airport do I fly into in Seoul?
You arrive at Incheon International (ICN), Seoul’s main international gateway, about 50 km west of the city. Some regional and domestic flights use the closer Gimpo (GMP) airport instead, so check your ticket if you have an onward connection.
How far in advance should I book London to Seoul flights?
Aim to book 2 to 4 months ahead. Long-haul fares to Seoul tend to rise as departure approaches, especially around the April cherry-blossom season, the summer holidays and the Christmas peak, so early booking almost always wins.
Is it cheaper to fly on weekdays?
Often, yes — midweek departures (Tuesday to Thursday) are usually a little cheaper than Friday–Sunday, and flying out and back on weekdays can save £40–£100 on a long-haul return. Being flexible by a day or two is one of the easiest ways to cut the fare.
Fare guidance based on aifly.one deal tracking and current airline schedules; last reviewed July 2026. Indicative economy returns — always check the live fare before booking.
