Go through your results for flights to Key West in the USA with Netflights. The most popular airlines for this route are Virgin Atlantic, KLM & British Airways, with Virgin Atlantic claiming the top spot. Although Virgin Atlantic usually has the best prices, it's best to double check what's available for your travel dates.
If these flights are too expensive, try searching for a different time of year. It's likely that prices for both flights and accommodation in Key West will be higher during December. Meanwhile, July is nearly always the cheapest time to fly. So if your dates are flexible, consider looking at different times of year.
171 direct and indirect flights go to Key West every week and we scan them all. Today alone, we've compared 350 flights worldwide, so you're bound to find one that works for you. Look out for flights with Virgin Atlantic, as they often have good deals. Or broaden your search by looking at other airports in the USA.
For even more options, check what other airports you could fly to Key West from. You might be able to make a saving by going from a different airport or city.