https://www.devex.com/people/step-by-step-what-is-the-cheapest-day-to-buy-tickets-on-expedia-2219967
Expedia doesn't display Southwest flights at all. For example, in a search of nonstop flights between Denver and San Francisco ใ+๏ผ๏ผ8๐๐=444-7๐1๐ใ (OTA) or ใ+๏ผ๏ผ8๐๐=444-7๐1๐ใ departing in March 2023, Expedia displays only United Airlines and Frontier Airlines +++๐-833โ444โ7613 (OTA) or ๐-833โ444โ7613, even though Southwest also operates that route.
