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London (LHR) to Seattle (SEA) business class reward flights

In business class from London (LHR) to Seattle (SEA), the best value is also the fewest miles: 70,000 Atmos points plus $437 on American Airlines through Atmos Rewards (checked 3 Nov 2026).

SEA → LHR
DateDates
CabinTravellers

Who’s flying?

Adults12 and over
1
Cabin
Best value right now70,000 Atmos pointsPlus fees$437.49ProgramAtmos RewardsAtmos RewardsAirlineAmerican AirlinesAmerican AirlinesDepartingTue, Nov 3
Last checked 1h agoChecked

Which program and airline costs you least

London to Seattle in business class: is 70K Atmos points + $437.49 — American Airlines through Atmos Rewards.

Every way to book LHR to SEA with miles or points
Airline
American AirlinesAmerican AirlinesBest valuevia ORDAtmos Rewards70K Atmos pointsplus $437.49
British AirwaysBritish Airwaysvia YVRAtmos Rewards70K Atmos pointsplus $880.89
Air FranceAir Francevia CDGAir France-KLM Flying Blue103Kplus $787.89
Alaska AirlinesAlaska AirlinesNonstopAtmos Rewards225K Atmos pointsplus $411.89
Delta Air LinesDelta Air LinesNonstopDelta SkyMiles295Kplus $413.19
KLMKLMvia AMSDelta SkyMiles295Kplus $405.34
Seen earlier, not re-checked since
British AirwaysBritish AirwaysNonstoplast seen 27 Oct, not re-checked sinceBritish Airways Club99K AviosFees not quoted, about $886

Where the space is over the next 60 days

November
Tue370KWed470KThu570KFri670KSat770KSun8400KMon970KTue1070KWed1170KThu1270KFri1370KSat1470KSun15485KMon1670KTue1770KWed1870KThu1970KFri2070KSat2170KSun2270KMon2370KTue2470KWed2570KThu2670KFri2770KSat28350KSun29400KMon30400K
December
Tue199KWed270KThu370KFri485KSat570KSun6295KMon785KTue870KWed970KThu1070KFri11295KSat1285KSun13295KMon1470KTue1570KWed16150KThu17298KFri18225KSat19110KSun20225KMon21225KTue22110KWed2370KThu2470KFri2570KSat26110KSun27150KMon28340KTue29110KWed30225KThu31150K
January
Fri1250K

Dashed days are prices last seen more than 3 days ago and not re-checked since.

LHR to SEA in business class: the facts

Over the next 60 days we hold business class seats from London to Seattle on 60 of the 60 departure days, through 4 programs. These figures are counted from the seats stored for those dates, not from a price history; the typical day is the median of each day's cheapest seat. Data updated .

  • Atmos Rewards
    Days with space
    59 of 60
    Lowest
    70,000 Atmos points
    Typical day
    70,000 Atmos points
    Cash on top
    $412 to $886
  • British Airways Club
    Days with space
    21 of 60
    Lowest
    99,000 Avios
    Typical day
    99,000 Avios
    Cash on top
    Not quoted
  • Air France-KLM Flying Blue
    Days with space
    25 of 60
    Lowest
    103,000 miles
    Typical day
    125,500 miles
    Cash on top
    $788
  • Delta SkyMiles
    Days with space
    60 of 60
    Lowest
    295,000 miles
    Typical day
    365,000 miles
    Cash on top
    $405 to $421

Nonstop or with a connection

Nonstop seats on Alaska Airlines, British Airways and Delta Air Lines. With a connection on Air France, American Airlines and KLM.

How to book it

  1. Atmos Rewards books on alaskaair.com: sign in there, search LHR to SEA in business class on a date with space, and pay in Atmos points with the cash on top (from $412).
  2. British Airways Club books on avios.com: sign in there, search LHR to SEA in business class on a date with space, and pay in Avios with the cash on top.
  3. Air France-KLM Flying Blue books on airfrance.fr: sign in there, search LHR to SEA in business class on a date with space, and pay in miles with the cash on top (from $788).
  4. Delta SkyMiles books on delta.com: sign in there, search LHR to SEA in business class on a date with space, and pay in miles with the cash on top (from $405).

MilesZone finds the seat; it does not book it or take payment.

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