Anonymous wrote:I asked a similar question a few months ago about upgrading to Premium Plus for $300/ticket for IAD to Tokyo for 6 of us (2 adults, 4 kids), and the consensus was pretty much that it was definitely worth it.
That's a 14 hour flight and probably 15 hours once you consider how long your butt is in the seat. It comes out to a cost of $21/hour per person for the upgrade during the flight.
Absolutely worth it.
It's better to think of upgrades in $ per hour of flight time. The longer the flight, the lower your $/hour will be. I'm willing to spend more $/hour if the flight includes an overnight portion.
My rule of thumb is Premium Plus for $35/hour or less is a very good deal. Lay flat business class for $60/hour or less is a very good deal.
Sometimes they will offer a deal of points + cash to upgrade. For example, a common biz upgrade to Europe will be 30K miles + $300. But if you're willing to pay cash fully, the biz upgrade might be only $375 which is a better deal (30K miles is worth - at the low end - $300 if you assume 1 cent per mile.....so clearly paying $375 upfront is a better deal for the traveler).