Yesterday in the airport I heard a song on what I think was an EDM pandora station. It was a high pitched woman’s voice singing repetitive lyrics (very hard to discern) with lots of long vowel sounds. Does this sound familiar to anyone?
That's a tough one, @aebs. Here are some that come to mind based on your description:
You & Me (Flume Remix) (feat. Eliza Doolittle) by Disclosure
This may be a stretch but I thought of this song too:
Midnight City by M83
Sunlight by Lane 8
Clair De Lune (feat. Christine Hoberg) by Flight Facilities
Say My Name (feat. Zyra) by ODESZA
Could you share more details? Was the song upbeat or slower? Deep house? Lots of bass or more electronic sounds?