The current Midwest MasterCard promo code does not offer the 10% discount provided with previous promotions. The current discount is 5%, if the code LG175 is applied to travel booked online at Midwest's website. The ususal terms and conditions apply and travel must be booked by 03/15/08 for travel through 05/22/08; LAX, PHX, SAN, and Florida markets are excluded 03/01/08 - 03/31/08, obviously due to peak travel during Spring Break.

A better promo code is SAVETEN, which provides a 10% discount off base fares of $200 or more.

Hope this helps.