As you can see, Flying Blue requires 5,000 more miles to fly Delta than Korean Air SkyPass, but it has the same redemption rate for award flights on Alaska Airlines. (upgradedpoints.com)
Southwest states that many flights will remain at the same redemption rate. (valuepenguin.com)
Citi, Chase and American Express all allow you to redeem reward points for cruises, usually at the same redemption rate as for airline travel. (creditcards.com)