Yes, you may certainly apply! Many families will agree to hire a nanny who lives at a distance. For example, the nanny may live in Oklahoma, and the family may be in Boston. It is customary for the family to advance the nanny's transportation expense, with the understanding that the nanny will reimburse the family out of the first several paychecks (usually about $50 - 100 per week). This may not be airfare, as more economical transportation may be available such as bus or train.

Many families will offer to reimburse these transportation expenses to the nanny after she has worked for the full year agreed to. This is a form of bonus to the nanny. If the nanny leaves before the year is out, it is generally at her expense. All issues regarding the transportation expenses should be clearly spelled out in the work agreement, so there is never a "he said...you said" kind of exchange.

If you are considering taking a job overseas, you should consider obtaining an 'open return' or 'open-ended round-trip ticket'. Open-ended means that you are not required to specify the date of your return flight at the time of purchase. Because of this convenience, open-ended tickets are usually more expensive than regular round-trip tickets. Open-ended tickets generally require travel to be completed within one year. Each airline will have its own conditions and restrictions that apply. This type of ticket insures that you can get home if you want to.

Creative Commons Source: http://www.4nannies.com/info/NANNYFAQ.cfm