Originally Posted by
Jerseygirl17
You can fly IAD/LAX/IAD/LAX same day for $239.40 ai and get 4576 miles.
If it were me, I would go for it. The LAX option is very easy - and you can even make a real weekend trip out of it if you want to (although I haven't checked whether they have blocked out Fridays and Sundays like AA has a habit of doing on many of the cheapest fares).