eli ... I donīt know how hard it is to get a one way ticket, but they are generally very expensive. You might want to consider an open ended ticket. These are round trip tix but the return date is left open for you to book when you know when you are returning. Generally on open ended tickets you canīt get the cheapest rates or APEX fares. So, you end up paying a little more for the convenience.
When I flew here after our wedding last spring, I looked into a one way ticket and was quoted in the ball park of $700 dollars (on Air France). However, the round trip ticket on Air France was $450 (they were having a spring fare sale). So, I took the round trip ticket and never used the return trip.