One album on constant repeat was Alpinisms, School of Seven Bells's debut LP. Perfect album for that half-asleep, half-awake state I was in for most of the flight. They sound like a cross between Sunny Day in Glasgow and Ladytron -- cool, droning female vocals floating on top of a glimmering backdrop of electropop/rock. Kind of a neo-shoegaze thing going on there, too. Really solid album. Highly recommended.
The other new album I was listening to was Marnie Stern's This Is It & I Am It & You Are It & So Is That & He Is It & She Is It & It Is It & That Is That. Her music sounds like a mix between freak-folk and heavy metal, with a little bit of Hella and Dan Deacon thrown in. Super high energy, funny lyrics, hilarious (and highly technical!) guitar riffs make this album a really fun listen.
These two albums, along with Girl Talk's Feed the Animals and The Fleet Foxes album are my favorites of the year so far.