It’s been an exciting month for American Airlines, as the carrier is celebrating two major milestones. American is celebrating the 40th anniversary of its frequent flyer program — so until May 3, win (free!) instant prizes from Admirals Club memberships and day passes, AAdvantage miles and more.And today — April 15, 2021 — American is celebrating its 95th birthday. To celebrate, you can find fares under $95, and as low as $40 one-way. You’ll need to book by tonight for travel through the end of May.For more TPG news and deals delivered each morning to your inbox, sign up for our daily newsletter.Airline: American AirlinesRoutes: Between DFW/PHL/MIA/LAX/ORD/CLT/PHX/JFK/TPA/FLL/MCO and moreCost: From $40 to $95 one-wayDates: Book by April 15 for travel until the end of MayPay with: The Platinum Card® from American Express (5x on flights booked directly with airlines or American Express Travel), Citi Prestige® Card (5x on airfare), Citi Premier® Card, Chase Sapphire Reserve (3x on airfare), American Express® Gold Card (3x on airfare when booked directly with the airline) or the Chase Sapphire Preferred Card (2x on travel)The information for the Citi Prestige Card has been collected independently by The Points Guy. The card details on this page have not been reviewed or provided by the card issuer.Here are some examples of flights you might find discounted as part of the sale:Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.Dallas (DFW) and Chicago (ORD) for $40 one-way in Main CabinMiami (MIA) and New York (JFK) for $40 one-way in Main CabinLos Angeles (LAX) to Miami (MIA) for $59 one-way in Main CabinChicago (ORD) to Las Vegas (LAS) for $80 one-way in Main CabinHow to bookThere are no tricks or special codes needed to find these fares.Head to Google Flights and plug in your desired departure and destination cities. Filter your search to only show American Airlines flights. Then, use the calendar function to find dates and prices that work for you and then click through to book with the airline directly or an OTA such as Expedia or Priceline.Maximize your purchaseDon’t forget to use a card that earns additional points on airfare purchases, such as The Platinum Card® from American Express (5x on flights booked directly with airlines or American Express Travel), Chase Sapphire Reserve, American Express® Gold Card, Citi Premier® Card, Citi Prestige Card (5x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). Check out this guide for more on maximizing airfare purchases.