Go through your results for flights to Cape Girardeau in the USA with Netflights. Although United Airlines usually has the best prices, it's best to double check what's available for your travel dates.
If you don’t have set dates for when you want to fly to Cape Girardeau, try searching by month – that way, you can compare airfares throughout the year.
So, if the flights to Cape Girardeau don't work for you, you could always try searching for flights to other airports in the USA.
You can also broaden your search by looking at more than one departure airport. Have a look around – you might be able to save by flying from a different airport or city.