Seattle to London flights (SEA–LON) | Finnair
Open menu
Home
Home
Skip to main content
Home
United States - EN
US - EN
Open menu
Home
Menu
Book
Manage
Check in
Search
Search
Destinations & offers
Destinations
Finland
Africa
Americas
Asia-Pacific
Europe
Middle East
Flight offers
Business Class flight offers
Route timetables
Travel documents map
Blue Wings stories
Prepare
Baggage
Checked baggage
Carry-on baggage
Sports equipment and other special baggage
Extra baggage fees
Restricted items
Lost, delayed or damaged baggage
Baggage between airlines
Seats
Seats on long-haul flights
Seats on short-haul flights
Upgrade
Travel extras for your trip
Finnair Cancellation Cover
Nordic Kitchen: meals and beverages
Long-haul meals
Business Class menus on long-haul flights
Short-haul meals
Pre-order meals
Special diets and food allergies
Travelling with children
Travelling with pets
Special assistance and health
Travelling with medical conditions
Disability assistance
Wheelchairs and mobility aids
Assistance dogs
Travelling while pregnant
Children travelling alone and young travellers
Travel documents
Travel documents to the USA, UK, Canada and Australia
Travel documents map
Travel & fly
Sustainable travel
Join us in reducing CO2 emissions
Climate targets backed by science
Decreasing consumption
Check-in for Finnair flights
Check-in in advance
Check-in at the airport
Bag Drop
Travelling at Helsinki Airport
Transport to and from the airport
Connecting flights
Security check
Finnair Lounges at Helsinki Airport
Lounges around the world
Finnair travel classes
Finnair ticket types
Finnair Business Class
Finnair Premium Economy
Finnair Economy Class
Upgrade your travel class
Experience our new long-haul cabin
In-flight entertainment and Wi-Fi
In-flight entertainment
Wi-Fi
Flight information
Travel updates
Archived travel information
Timetables
In case of disruption
How to change your flights
Finnair fleet
Shopping with Finnair
Travel extras at the destination
Car rental
Airport transfers
Customer support
Help and contacts
Contact and request forms
Frequently asked questions
Finnair Plus
Welcome to Finnair Plus
A new era for Finnair Plus
Finnair Plus rules
Membership tiers and benefits
Finnair Plus Basic
Finnair Plus Silver
Finnair Plus Gold
Finnair Plus Platinum
Finnair Plus Platinum Lumo
Finnair Plus Lifetime
Finnair Plus Junior
Collect and use Avios
What are Avios and tier points?
Collect Avios and tier points from flights
Collect Avios from partner services
Use Avios on Finnair award flights
Use Avios on award flights with partners
Use Avios on travel class upgrade
Use Avios on Finnair Plus partners
Buy, exchange or transfer Avios
Transfer Avios between Finnair and British Airways
Finnair Plus help and support
Frequently asked questions
Travel class upgrades for members
Claim missing Avios
Forgotten password
Finnair for Business
Finnair for Business
PrioFlex: Our corporate ticket type
Download VAT receipt
Contact us
Join Finnair Corporate Program
Frequently asked questions
General
Admins and travel bookers
Travellers
Home
/
Destinations
/
United Kingdom
/
Flights to London
/
Seattle London
Search and book Seattle to London flights
Your journey starts here
Flights
Award flight
Car rental
Trip type
Round trip
From
Seattle
(SEA)
United States of America.
To
London
(All)
United Kingdom.
Passengers and class
1, All travel classes
Depart
Select date
Return
Select date
Popular routes and flight deals
From Seattle
Flights from cities
Flights from countries
City to city flights
Country to country flights
