Are there nonstop flights from Luton (LTN) to Seattle (SEA)?

No. The fastest connection is via Reykjavík, about 10h 1m of total flying time.

What is the fastest connection from Luton (LTN) to Seattle (SEA)?

via Reykjavík ≈ 10h 1m, via Dublin ≈ 10h 5m, via Amsterdam ≈ 10h 38m (estimated flying time, excluding layovers).

London Luton Airport (LTN) to Seattle–Tacoma International Airport (SEA)・7,671 km

No nonstop flights. The fastest connection is via Reykjavík (KEF), about 10h 1m of flying time (layover not included).

None.

8 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.