Washington (IAD) to London (LGW) business class award flights

LGW → IAD

Lowest seen in the last 5 daysPlus fees$355.50Program

Air France-KLM Flying BlueLight fareAirline

Air FranceDepartingFri, Oct 30

Last checked 4d agoChecked 17 Oct 2026, 12:49 UTC

Which program and airline costs you least

Washington to London in business class starts at 60K miles plus $355.50 — Air France through Air France-KLM Flying Blue. Royal Air Maroc through Atmos Rewards charges the least cash — $44.10 — but wants 70K Atmos points.

Every way to book IAD to LGW with miles or points
Airline	Program
Air Francevia CDGlast seen 17 Oct, not re-checked sinceAir France-KLM Flying Blue	Air France-KLM Flying BlueLight fare	Fewest miles60Kplus $355.50	$355.50
Royal Air Marocvia CMNlast seen 9 Oct, not re-checked sinceAtmos Rewards	Atmos Rewards	70K Atmos pointsplus $44.10	Lowest fees$44.10
Turkish Airlinesvia ISTlast seen 9 Oct, not re-checked sinceLifeMiles	LifeMiles	72Kplus $58.00	$58.00
KLMvia AMS, CDGlast seen 17 Oct, not re-checked sinceAir France-KLM Flying Blue	Air France-KLM Flying BlueLight fare	95Kplus $385.30	$385.30
Delta Air Linesvia JFK, CDGlast seen 18 Oct, not re-checked sinceAir France-KLM Flying Blue	Air France-KLM Flying BlueStandard fare	169.5Kplus $360.00	$360.00

Where the space is over the next 60 days

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

IAD to LGW in business class: the facts

Over the next 60 days we hold business class seats from Washington to London on 60 of the 60 departure days, through 3 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 October 18, 2026.

Air France-KLM Flying Blue
Days with space
60 of 60
Lowest
60,000 miles
Typical day
136,000 miles
Cash on top
$355 to $385
Atmos Rewards
Days with space
2 of 60
Lowest
70,000 Atmos points
Typical day
70,000 Atmos points
Cash on top
$44
LifeMiles
Days with space
1 of 60
Lowest
72,000 miles
Typical day
72,000 miles
Cash on top
$58

IAD to LGW business class seats per program over the next 60 days
Program	Days with space	Lowest	Typical day	Cash on top
Air France-KLM Flying Blue	60 of 60	60,000 miles	136,000 miles	$355 to $385
Atmos Rewards	2 of 60	70,000 Atmos points	70,000 Atmos points	$44
LifeMiles	1 of 60	72,000 miles	72,000 miles	$58

Nonstop or with a connection

No nonstop seats in the window. With a connection on Air France, Delta Air Lines, KLM, Royal Air Maroc and Turkish Airlines.

How to book it

Air France-KLM Flying Blue books on airfrance.fr: sign in there, search IAD to LGW in business class on a date with space, and pay in miles with the cash on top (from $355).
Atmos Rewards books on alaskaair.com: sign in there, search IAD to LGW in business class on a date with space, and pay in Atmos points with the cash on top (from $44).
LifeMiles books on lifemiles.com: sign in there, search IAD to LGW in business class on a date with space, and pay in miles with the cash on top (from $58).

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

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Every route we watch from Washington (IAD)

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