Delta Airlines is having a SkyMiles Flash sale to Asia from the 48 US cities. Terms & condition in source/link. There are airfares in US Dollars as well but the better deal here is using SkyMiles plus tax/fee.
Delta Airlines SkyMiles Flash Sale [delta.com]
Book by July 3, 2018.
Travel - Outbound travel from the U.S. to select Asia-Pacific cities permitted from September 4 through December 13, 2018.
Travel must be completed by December 25, 2018.
Advance Purchase: 28 days
Minimum Stay: 10 days
Maximum Stay: 1 month