Changing Flights - "Low" increase in your original fare
 

Humorous moment today. Currently in LA, wondering if I can get back on the earlier flight tomorrow. Go to manage my booking, takes me through the process and on the select flights page, under the additional fare column it says "Low" - which they state..."a small increase in fare compared to your original booking"

So I think that won't be too bad, given what I paid originally.

Click on the link and the "Low" increase is £3030 - which is approx 80% of the original fare! God knows what "High" would have been.