If you want a cheap flight from Doncaster to Paris, you've got zero airlines to choose from.
Paris Charles De Gaulle Airport is just one of the airports in Paris. If you're not set on a specific airport, try changing your search from Paris Charles De Gaulle Airport to Paris to see a broader range of flights – they might be cheaper.
During this peak season, hotel and holiday prices often increase too, so it's best to book early. Or you could keep your fingers crossed and hold out for a last-minute deal.