I'll be in San Francisco next month and have a day trip to SEA scheduled in between. At first my intention was to give VX a try. Not only to experience their F-class once (well, the first time) but the fare was also lower or equal to other carriers, especially to my usual choice UA.

But then I had a look at OAK and discovered that AS offers a full fare ticket in F for around 440 USD (r/t). That is considerably cheaper than my next best alternative from SFO, and this clearly adds up to a saving of about 270 USD for the two us us!

And now my question would be if there are any disadvantages involved? Or is this difference only due do the fact that SFO is primarily a business route whereas OAK is targeted as a leisure one? And I assume the service will be different, so an enhanced meal vs. snack basket?

Any input or recommendation is highly appreciated! Thanks!