Remember the Priceline rules. When bidding, you must remember that once you have authorized Priceline to charge your credit card, your reservation is non-refundable and cannot be changed.
Be flexible with your dates. For the best prices, you should always travel on off-peak days. That means you should avoid holidays and weekends.
Look for more than one airport. Trying different airports nearby can find you a budget flight. It also gives you the option to immediately rebid.
Research airfares on other websites. This will give you an idea of flight prices so that you don't overbid.
Adjust your bid higher, if you have non-negotiable travel dates.
Make riskier lower bids if you are looking for flights weeks in advance.
Bid on one airport at a time. Priceline may show you additional airports, but do not choose these airports as options. This will give you immediate options if your original bid is rejected.