Help Reunite Family for Father's Cancer Battle

I don’t want my family to see this so please if you know them don’t share it, but my Farther has recently been diagnosed with colon cancer. He was already not well and treatment is going to be very difficult i have not seen my dad in 6 years since I moved to the USA and the last time I visited England. I am working hard to renew both my passport and my sons as quickly as possible so I can return with him to spend time helping my Dad/Grandad. I have the passport renewals covered but the cost of the flights is ungodly. Unfortunately time is very limited as we all know chemo can have a very negative affect very quickly and as I will also have to take zero paid time as I have just started a new job I am going to have to ask for help which I hate having to do. Our flights will cost around $2000 I am not expecting anywhere near that but any help would be greatly appreciated. I am trying hard to be able and to get home with my son this last time to see my Dad before the end of January or as soon as our passports renewals are back. This is also going to be a surprise for them so again if you know my family please don’t say anything they have enough right now to deal with thankyou in advance for any help.