Originally Posted by
stifle
Could be any number of reasons.
- No W class fare defined between your start and end points.
- You don't meet the advance reservation, minimum stay, or maximum stay rules for a W fare
- W fare not available on your return leg (if a roundtrip) and the fare you are using for your return is non-combinable with a W fare, or vice-versa
- You are booking for two or more people and only 1 W fare is offered
- KVS listing is out of date
- KVS listing relates to a different point of sale than that which you are looking to book from
- Married segments
- Starnet blocking
I believe the poster of this particular question was wondering why there is availability below W class, but united.com only gives him/her a W class fare. In this case, there are fares cheaper than W in the market, but the routing rules require travel through IAH or DEN. The cheaper fares are not allowed on the non-stop service.