I am currently booked on Continental and Northwest to fly ATL-IAH-MSP-BIS on July 15, returning BIS-MSP-EWR-ATL on July 19. I will be going to Bismarck with my step-grandma who lives in Rockford, Illinois. So she can get to her departure airport by bus, she is going to fly out of ORD. She just wants me to book her seats when I think the price is good and she will reimburse me. My question is, what would be an decent price and what do you think the best I can get is? July 15 is a Thursday and the 19th is a Monday, so there is a Saturday night stay. The only requirements are that the flight out of ORD leaves 10:00a.m. (preferably a little later) and the flight back into ORD arrives by 8:30p.m. at the very latest. It does not matter what airline, but she does not want to go too out of the way (UA has a $315 fare, but it is through DEN).
I am not asking you all to be my travel agents and look up flights for me, but I just want to know what I should settle for given the above dates and requirements. At the moment, the best fare is $315 on NW and UA. Thank you very much!