Make sure the employer is OK with this situation. If you're two days are consecutive it could work. But, and this is a big but, what happens when there are airline issues and you can't make it in for those two office days? Bad weather, irregular ops, etc. Chances are you will need to fly in the day before and then try and fly back after work the second day. Renting a room could work or even find a close hotel and do a deal with the manager for two nights a week.

I say make sure your employer is good with this because some companies will expect you to be a resident of the state the office is located (if you are required to be in that office). Also you will need to give your home address as Oregon. I know a situation where someone was hired and decided he would do a 2-3 hour one way commute on public transport (train)his 4 days in the office a week. The employer gave him 3 months to relocate as a condition of hire. He decided not to relocate and didn't tell anyone. He got away with it until the winter and the trains started to be delayed and canceled due to weather. He would call off work and finally admitted he was commuting. Employer wasn't happy and made the decision to replace him.

If your employer is good with the situation then go for it. But if you're a direct employee then HR and payroll needs to know.