We live in a time where international air travel has become ridiculously cheap relative to domestic travel. I regularly see roundtrip flights between SFO and Singapore/HK for ~$600 and RT flights between US and Europe for ~$400 or so, but expect to pay at least $650 to go between SF<>NY and even $350 just to go between SF and LA sometimes.
Point is, it's never been cheaper to travel internationally. Enjoy it while it's still true.