Is their anyway to get discounts on repeat flights. My Son in law has end stage cancer and I need to fly back and forth for a few weeks during the process is their discounts

Most of the airlines offer what is called " frequent traveler" ask your favorite airline about it, I use to fly with volaris every time I visit Mexico and they offer it, there is like a membership called "v.club" it has a yearly or monthly cost but with a huge discount when booking a flight, it's way worth it if you travel often. Ask your favorite airline company Good luck.

I agree with Gerald

The best bet would be to give your favorite airline a call and ask if they offer anything for frequent flyers

So sorry to hear, call the airline, perhaps some arrangement can be made. Good luck.