You can't transfer airline miles from one airline to another. It's also impossible to combine two different types of miles into one account. However, you can use an airline's miles to book an award seat on another airline within the same alliance.
American Airlines and Delta Air Lines are restoring their interline agreement as of Wednesday, a move that establishes the most basic level of cooperation between the nation's two largest carriers.
You need elite status with another airline to participateThe principal eligibility requirement for a Delta status match is to have elite status in a loyalty program with one of 15 non-SkyTeam carriers. For U.S. domestic airlines, these are: Alaska Airlines Mileage Plan. American Airlines AAdvantage.
When comparing the experience between Delta Air Lines versus American Airlines, American wins in more categories, including the ability to achieve elite status more quickly. Although it doesn't have as many flight routes, Delta makes up for it with its superior in-flight experience and operations.
Flight awards on AmericanFlight awards are available for as low as 7,500 miles each way plus any applicable taxes and carrier-imposed fees. Mileage levels vary by date and flight. During booking, the applicable award level will be displayed based on availability.
You can redeem American Airlines miles for itineraries that include flights operated by Oneworld airlines and other AAdvantage partners. As long as your itinerary includes at least one segment operated by an airline that's not American Airlines, you'll pay set award rates defined by the AAdvantage partner award chart.
The big four US airlines - American Airlines, Southwest Airlines, Delta Airlines and United Airlines - have by far the most capacity, accounting for 74% of US airline seats, a total of just under 73 million between them.
American Airlines is considered to be a safe airline and has excellent mileage redemption options. It offers flights to many destinations worldwide and has a variety of ticket types for travelers of all budgets. Before booking a ticket, be sure to join the AAdvantage loyalty program for added benefits.
There are three major airline alliances: SkyTeam, Star Alliance and Oneworld. Each has different partner airlines. You may have benefitted from an alliance without even realizing it.
Things get a bit more interesting here because it's much easier to earn status with American and its Loyalty Points system than with Delta and its Medallion Qualification Dollars (MQDs). Both airlines use different metrics, but the chart below outlines the different tier qualifications for 2025 elite status.
The Platinum or Centurion Card must be used as the payment method to receive the per-visit rate. Guests must also be traveling on Delta-operated or Delta-marketed flight operated by WestJet (006 ticket number) to access the Club.
Amex Platinum cardmembers get access to Delta-operated Sky Club lounges when flying on a Delta-operated flight or a Delta-marketed flight operated by WestJet. To find eligible lounges, head to Delta's website and select Platinum Card® Members From American Express as your membership type.
But the motivations are clear. For American, working with JetBlue gave it a much-needed boost in New York, where its small presence left the airline unable to compete with the likes of Delta and United. American needed JetBlue more than JetBlue needed American … and JetBlue decided it needs Spirit more.