Question : Have you considered flying out of an airport besides Bob Hope Airport (BUR)?
Answer : Try looking for flights from Los Angeles International Airport (LAX) as well. Over the next two months, flights from LAX to RIC are being priced 32% cheaper than flights from BUR to RIC. Being only 18 miles away, it's easily accessible for most.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : Wednesday is your lowest-cost day to fly in February. Flexibility is paramount when booking travel plans in order to keep costs down.