Chicago (ORD) to Dublin (DUB) business class award flights

DUB → ORD

Lowest seen in the last 8 daysPlus fees$25.60Program

Atmos RewardsAirline

Aer LingusDepartingSat, Oct 24

Last checked 7d agoChecked 14 Oct 2026, 09:53 UTC

Which program and airline costs you least

Chicago to Dublin in business class starts at 55K Atmos points plus $25.60 — Aer Lingus through Atmos Rewards. United Airlines through United MileagePlus charges the least cash — $5.60 — but wants 80K miles.

Every way to book ORD to DUB with miles or points
Airline	Program
Aer LingusNonstoplast seen 14 Oct, not re-checked sinceAtmos Rewards	Atmos Rewards	Fewest points55K Atmos pointsplus $25.60	$25.60
American Airlinesvia PHLlast seen 14 Oct, not re-checked sinceAtmos Rewards	Atmos Rewards	55K Atmos pointsplus $25.60	$25.60
British Airwaysvia LHRlast seen 14 Oct, not re-checked sinceAtmos Rewards	Atmos Rewards	55K Atmos pointsplus $1,017.40	$1,017.40
United Airlinesvia YYZlast seen 12 Oct, not re-checked sinceLifeMiles	LifeMiles	72Kplus $9.08	$9.08
Air Canadavia YYZlast seen 12 Oct, not re-checked sinceLifeMiles	LifeMiles	72Kplus $9.08	$9.08
United Airlinesvia EWRlast seen 11 Oct, not re-checked sinceUnited MileagePlus	United MileagePlus	80Kplus $5.60	Lowest fees$5.60
Aer LingusNonstoplast seen 12 Oct, not re-checked sinceUnited MileagePlus	United MileagePlus	93Kplus $5.60	$5.60
Air Canadavia YYZlast seen 12 Oct, not re-checked sinceUnited MileagePlus	United MileagePlus	93Kplus $13.50	$13.50
JetBluevia BOSlast seen 11 Oct, not re-checked sinceUnited MileagePlus	United MileagePlus	125Kplus $5.60	$5.60
Finnairvia HELlast seen 14 Oct, not re-checked sinceAtmos Rewards	Atmos Rewards	320K Atmos pointsplus $33.50	$33.50

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.

ORD to DUB in business class: the facts

Over the next 60 days we hold business class seats from Chicago to Dublin 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 14, 2026.

Atmos Rewards
Days with space
48 of 60
Lowest
55,000 Atmos points
Typical day
250,000 Atmos points
Cash on top
$26 to $1,017
LifeMiles
Days with space
6 of 60
Lowest
72,000 miles
Typical day
72,000 miles
Cash on top
$9 to $58
United MileagePlus
Days with space
60 of 60
Lowest
80,000 miles
Typical day
200,000 miles
Cash on top
$6

ORD to DUB business class seats per program over the next 60 days
Program	Days with space	Lowest	Typical day	Cash on top
Atmos Rewards	48 of 60	55,000 Atmos points	250,000 Atmos points	$26 to $1,017
LifeMiles	6 of 60	72,000 miles	72,000 miles	$9 to $58
United MileagePlus	60 of 60	80,000 miles	200,000 miles	$6

Nonstop or with a connection

Nonstop seats on Aer Lingus and United Airlines. With a connection on Air Canada, American Airlines, British Airways, Finnair and JetBlue.

How to book it

Atmos Rewards books on alaskaair.com: sign in there, search ORD to DUB in business class on a date with space, and pay in Atmos points with the cash on top (from $26).
LifeMiles books on lifemiles.com: sign in there, search ORD to DUB in business class on a date with space, and pay in miles with the cash on top (from $9).
United MileagePlus books on united.com: sign in there, search ORD to DUB in business class on a date with space, and pay in miles with the cash on top (from $6).

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

More routes

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