I need your advice, Bees!

My husband is from the other side of the world and earlier this month his father was diagnosed with a very aggressive extensive-stage cancer that is moving quickly. He is currently undergoing chemotherapy so he's extremely sick and weak. We are not sure, but we are hoping he will feel better once chemo is stopped.

We are considering taking an emergency trip next month so his father can meet his 9 month old grandson before he passes. Our baby is very spirited (he's 25+ pounds of mostly muscle, strong as hell, and never, ever stops moving). He is awesome and so much fun but he hates being held, he loves to make noise, and most worrying are the insane screaming tantrums he has when he is overtired or not allowed to move where he wants to. He's kind of a handful and probably not so great on a plane.

We are already struggling with money and the plane tickets would cost around $6,000 (First Class is $24,000! I had to check...) plus we'd have to go a couple of weeks without working. The plane ride is absolutely grueling - 21 hours on a plane in economy, split up into two or three flights depending on which route we take. We would also need to apply for expedited passports (one for the baby and a name change one for myself), but that's not much of an obstacle.

Traveling there as adults is difficult enough, but trying to picture my crazy-active little angel on this trip is making me sick to my stomach. However, we are close to his family despite the distance, and we love them dearly and are absolutely heartbroken by what's happening. I know how important family is and don't want to make a decision I will regret forever, but I want to do what's right for my baby and our family. And to support my husband!

What would you do???