Note If you will be eating away from home, do not light the candles at home unless you will be home for some period of time after dark (in which case you must see the candles burning for at least one minute after dark/tzeit ha'kochavim; otherwise you will have made a bracha l'vatala). This is not the ideal situation, as the ideal is to light where you will eat.
Note You do not need to light candles at all if you are not eating at your own home on the Jewish festival (this applies to men and women, even wives and mothers who normally light at their own home) as long as someone else is lighting candles where you will eat. While the basic halacha is that the hostess lights for everyone, it is a widespread custom for any woman who is--or was--married to light at the hostess's home.