Originally Posted by
M60_to_LGA
For flights, Chase hasn't enabled NDC capability, which means that both AA and UA (as of sometime last year) have yanked many of their lower-priced fare options away. But Expedia, which has enabled NDC, has access to those fares.
I assume too that portals (any of them) don’t show fares using the ‘continuous pricing model’ that UA sometimes has on its site. In these cases, as an example, a trip will price a flight with a K fare even though it shows L9 K0, and the price will be somewhere between the filed L and K price - IME, it’s usually closer to the higher bucket than the lower but not sure if that’s universally true.