How do I get the cheapest flight from the Virginia area to Guyana from Jan. 8th to June 25th (not flexible)

How do I get the cheapest flight from the Virginia area to Guyana from Jan. 8th to June 25th (not flexible)?
I believe the best airport in the US around Virginia is JFK, and I was able to find a price for $680. Is there a better price than that?
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Richmond, VA (RIC) to Georgetown, Guyana (GEO) flight Cost $1,125.20 6:30 pm Depart Richmond (RIC) Arrive Georgetown,Guyana (GEO) 8:05 pm Sun 8-Jan Duration: 23hr 35mn Delta Delta 6059 operated by FREEDOM AIRLINES INC6059 / Delta 6069 operated by FREEDOM AIRLINES INC6069 BWIA International BWIA International 431 Connect in Orlando (MCO), Miami (MIA) Total stops: 3 5:45 am Depart Georgetown,Guyana (GEO) Arrive Richmond (RIC) 9:51 pm Sun 25-Jun Duration: 18hr 6mn BWIA International 432 Delta Delta Delta 6112 operated by FREEDOM AIRLINES INC6112 / Delta 6093 operated by FREEDOM AIRLINES INC6093 Connect in Miami (MIA), Orlando (MCO) Total stops: 3 That's the cheapest..