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Cardiff (CWL) to Washington (IAD) business class reward flights

Dates
Travellers and cabin

Who’s flying?

Adults12 and over
1
Cabin
Programmes
Stops
Departure time

00:0024:00

Arrival time

00:0024:00

Flight duration
Any length

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Stops
Departure time

00:0024:00

Arrival time

00:0024:00

Flight duration
Any length
Lowest seen in the last 12 days80,000 milesPlus fees$820.69ProgramAir France-KLM Flying BlueAir France-KLM Flying BlueLight fareAirlineKLMKLMDepartingTue, Nov 10
Last checked 11d agoChecked

Which program and airline costs you least

Cardiff to Washington in business class starts at 80K miles plus $820.69 — KLM through Air France-KLM Flying Blue.

Every way to book CWL to IAD with miles or points
Airline
KLMKLMvia AMS, CDGlast seen 10 Oct, not re-checked sinceAir France-KLM Flying Blue80Kplus $820.69

CWL to IAD in business class: the facts

Over the next 60 days we hold business class seats from Cardiff to Washington on 60 of the 60 departure days, through 1 program. 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 .

Nonstop or with a connection

No nonstop seats in the window. With a connection on KLM.

How to book it

  1. Air France-KLM Flying Blue books on airfrance.fr: sign in there, search CWL to IAD in business class on a date with space, and pay in miles with the cash on top (from $791).

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

Get told the moment a CWL → IAD seat opens.

We re-check that exact seat seconds before the email leaves, so what you open is still there.

Email only. Searching this route stays free for departures in the next 60 days.