My wife recently finished 18 months of chemo. I took the RV down to Mexico and she flew down to meet me. We stuck close to Puerto Vallarta where there are several daily flights back home a day. Every 3 weeks she would get on a plane and fly to Vancouver on a Sunday, get chemo on Monday, & hop back on the plane to Mexico on Tuesday. About $500 a time. She must have done this 8 or 9 times over 2 seasons. It was well worth it and it did wonders for her headspace. Only issue was we had to get her on direct flights, we could not risk her landing anywhere in the US, in case there was a medical issue.