Earlier quoted context omitted.
If I say I want to fly on Tuesday, 2/2/2029, with a departure between 8-11am, economy, and ask you to show me options sorted by cost (descending), you should show me exactly those results. You could offer me a flexible search option, as some sites do (+/- x days on flight times, etc.). Great! Now I can request that we search within a date range. Nice! That might be a good feature for some people! Offering a simple qu…
There are so many decisions other than just the dates that you implicitly make (or are made for you when you book your flight). Do you want insurance? Wi-Fi? Extra leg room? Turbo prop aircraft? Jets only? 2-3-2 seating? 3-3 seating? Logically, you should want to control each of these variables while searching for flights. If you are ready to trust a flight aggregator with these choices, some fuzziness in price seems…
I.e. the UI needs to be there to efficiently help the user do what they ask not to try to be smarter than the user. Unless the user asks for fuzzy matches it doesn't make sense to make the response lead with them.