Seattle (SEA) to Osaka (KIX) business class award flights

KIX → SEA

Cheapest right nowPlus fees$28.50Program

LifeMilesAirline

Air CanadaDepartingMon, Nov 16

Last checked 17h agoChecked 21 Oct 2026, 15:04 UTC

Which program and airline costs you least

Seattle to Osaka in business class starts at 90K miles plus $28.50 — Air Canada through LifeMiles. Alaska Airlines through Atmos Rewards charges the least cash — $5.60 — but wants 150K Atmos points.

Every way to book SEA to KIX with miles or points
Airline	Program
Air Canadavia YVRLifeMiles	LifeMiles	Fewest miles90Kplus $28.50	$28.50
United Airlinesvia SFO, ICNLifeMiles	LifeMiles	90Kplus $58.00	$58.00
Alaska Airlinesvia HNLAtmos Rewards	Atmos Rewards	150K Atmos pointsplus $5.60	Lowest fees$5.60
Air Francevia CDGAir France-KLM Flying Blue	Air France-KLM Flying BlueLight fare	152.5Kplus $700.20	$700.20
Delta Air Linesvia ICNDelta SkyMiles	Delta SkyMiles	191.6Kplus $13.10	$13.10
Starlux Airlinesvia TPEAtmos Rewards	Atmos Rewards	300K Atmos pointsplus $48.70	$48.70

SEA to KIX in business class: the facts

Over the next 60 days we hold business class seats from Seattle to Osaka 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 October 22, 2026.

LifeMiles
Days with space
15 of 60
Lowest
90,000 miles
Typical day
90,000 miles
Cash on top
$29 to $58
Atmos Rewards
Days with space
59 of 60
Lowest
150,000 Atmos points
Typical day
200,000 Atmos points
Cash on top
$6 to $49
Air France-KLM Flying Blue
Days with space
16 of 60
Lowest
152,500 miles
Typical day
700,000 miles
Cash on top
$700
Delta SkyMiles
Days with space
10 of 60
Lowest
191,600 miles
Typical day
238,100 miles
Cash on top
$13

SEA to KIX business class seats per program over the next 60 days
Program	Days with space	Lowest	Typical day	Cash on top
LifeMiles	15 of 60	90,000 miles	90,000 miles	$29 to $58
Atmos Rewards	59 of 60	150,000 Atmos points	200,000 Atmos points	$6 to $49
Air France-KLM Flying Blue	16 of 60	152,500 miles	700,000 miles	$700
Delta SkyMiles	10 of 60	191,600 miles	238,100 miles	$13

Nonstop or with a connection

No nonstop seats in the window. With a connection on Air Canada, Air France, Alaska Airlines, Delta Air Lines, Starlux Airlines and United Airlines.

How to book it

LifeMiles books on lifemiles.com: sign in there, search SEA to KIX in business class on a date with space, and pay in miles with the cash on top (from $29).
Atmos Rewards books on alaskaair.com: sign in there, search SEA to KIX in business class on a date with space, and pay in Atmos points with the cash on top (from $6).
Air France-KLM Flying Blue books on airfrance.fr: sign in there, search SEA to KIX in business class on a date with space, and pay in miles with the cash on top (from $700).
Delta SkyMiles books on delta.com: sign in there, search SEA to KIX in business class on a date with space, and pay in miles with the cash on top (from $13).

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

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