It’s generally more expensive to depart on a Wednesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
Due to multiple factors, expect to potentially pay more when booking in January. For low rates, September can be a great choice for travel to Detroit. Flights to Detroit from Doha in September are about 4,437﷼ on average during September, but can be found for as low as 257﷼.
It’s typically best to fly out from Doha to Detroit at midday. Doing so could potentially save you 13% on the flight price compared to flying in the morning, which is usually more expensive.