I have a United flight CDG-RTB-CDG. Now I already used CDG-RTB, and I want to change the date of RTB-CDG, which my fare allows without fee with price difference only.
The problem is that it's a pain to find an alternative flight. For each day that I want to look up prices, I have to enter it manually, then wait for quite a while for results to come up, then click the sort-by-prices button in the list.
Is there another way to search for prices of return flights, maybe getting a table overview?
Easiest is actually to call Unitd and let them do the work. From experience agents can quickly find cheap alternatives. I wish I had their tools available.
What I'm doing right now:
Change dates in the URL with the results. That allows me to quickly change dates, but I still have to wait ages for results and then click the sort-by-price button.
Check one-way flights RTB-CDG on Google Flights. The cheapest ones there may be the ones I should consider as alternative return flights, but I'm not sure about that logic. And of course the flights on Google Flights are cached, so not necessarily accurate.
Update: When I called yesterday, the agent actually told me that she also has to look for flights one-by-one. So that was not much help, although I'm pretty sure that the agent that I called a few weeks ago did have an overview, because she could quickly tell me that the lowest price differences are on April 30 and May 8 at 151€. So, in the end I just used the interface by United, despite it taking several minutes to get each result. Now there was an option even cheaper than 151€ on April 30. I found a flight for 30€ that transits through Frankfurt (may hop off there).