Flight Score: Seoul (ICN) to London (LHR)

Airline experience comparison — ICN → LHR

Experience score = service + baggage + aircraft + nonstop duration. Airlines shown serve Seoul; some may not operate this exact route on every date — the live search shows current flights. Price and departure time are scored only on live searches, where flights receive a full score out of 100.

Airline experience rankings
#	Airline	Typical aircraft	Checked bag	Score breakdown	Score
1	Singapore Airlines	A380	Included	Service 19/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	48
2	Emirates	A380	Included	Service 19/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	48
3	Cathay Pacific	A350	Included	Service 18/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	47
4	Qatar Airways	A350	Included	Service 18/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	47
5	ANA	B787	Included	Service 17/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	46
6	Japan Airlines	B787	Included	Service 17/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	46
7	Korean Air	B787	Included	Service 16/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	45
8	Asiana Airlines	A350	Included	Service 15/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	44
9	Delta Air Lines	A350	Included	Service 15/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	44
10	Air France	B787	Included	Service 15/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	44
11	Turkish Airlines	A350	Included	Service 15/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	44
12	United Airlines	B787	Included	Service 14/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	43
13	Lufthansa	B747-8	Included	Service 14/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	43
14	Thai Airways	A350	Included	Service 14/20 Baggage 10/15 Plane Type 9/10 Duration 10/10	43
15	Air Seoul	A320	Extra fee	Service 10/20 Baggage 5/15 Plane Type 4/10 Duration 10/10	29
16	Jeju Air	B737	Extra fee	Service 9/20 Baggage 5/15 Plane Type 4/10 Duration 10/10	28
17	T'way Airlines	B737	Extra fee	Service 8/20 Baggage 5/15 Plane Type 4/10 Duration 10/10	27
18	Jin Air	B737	Extra fee	Service 8/20 Baggage 5/15 Plane Type 4/10 Duration 10/10	27

Route facts

Distance

8,861 km

Typical nonstop

11h 5m

From

Seoul, South Korea

To

London, United Kingdom

London is pleasant in late spring and early autumn; fares peak in July-August.

Best time to fly

May-June and September is generally the best window for London — see the live search for current fares.

How Flight Score works

Flight Score rates every flight out of 100: price (35), service (20), baggage (15), plane type (10), departure time (10), and duration (10). The rankings above cover the four experience factors that stay consistent for an airline on this route. Search live flights to see full scores including real-time price comparison against the route average.

Frequently asked questions

Which airline ranks best for ICN to LHR flights?

Among airlines serving Seoul, Singapore Airlines leads the experience comparison with 48 points across service, baggage, aircraft, and nonstop duration. Some airlines shown may not operate this exact route on every date — the live search shows current flights.

How far is the flight from Seoul to London?

The route is about 8,861 km with a typical nonstop duration of about 11h 5m.

Does Flight Score show live prices?

No. These pages rank airlines by experience factors only. Use the live search on this page to see current prices, which are scored against the real route average.

How is the Flight Score calculated?

Flights are scored out of 100 across six factors: price (35), service (20), baggage (15), plane type (10), departure time (10), and duration (10). Static pages show the four experience factors; price and timing are scored only in live searches.

When are flights to London most expensive?

July and August, plus the Christmas period, see the highest fares.