Contact a travel agency as a first point of attack. Find out about discounted first-class tickets or groups of tickets they may have available. Some airline carriers will sell a block of discounted first class seats to a travel agent or can negotiate a better deal for you with the airlines. Travel agencies that specialize in first-class and business-class tickets can also prove helpful.
Book online at a travel website. Enter your location information and mark "First Class" as the cabin you'd like to reserve.
Look for fare types that begin with F or P and you'll know if you've found a first class ticket.
Search out discounted first class-tickets by identifying Y-UP or Q-UP fare codes. For flights to Asia or Europe, look for Z-UP fares. These fares will usually be found on one-way tickets rather than round-trip.
Select the flight time you want and continue to the information page to enter your personal information and credit card information.