How do I add frequent flyer to Delta flight?

If you've already booked your trip and you're wondering how to add your SkyMiles number to an existing reservation, note that you can do this after the fact by accessing the “My Trips” tab on Delta's website.



Adding your SkyMiles number to a Delta flight in 2026 is a simple process that can be done at any stage before your flight. If you are currently booking, there is a dedicated field in the "Passenger Information" section. If you have an existing reservation, log in to the Fly Delta app or delta.com, go to "My Trips," select your flight, and click "Add/Edit Frequent Flyer Number." You can also add it during the Check-In process (up to 24 hours before departure) by clicking "Add Passenger Info." If you are already at the airport, a gate agent or a self-service kiosk can manually input the number for you. For those who forget entirely, Delta allows you to request missing credit for up to nine months after the flight, provided you were a SkyMiles member at the time of travel. Interestingly, if you have status with a partner airline like Air France or KLM, you can choose to enter that frequent flyer number instead to earn miles and status credits within their respective "Flying Blue" program while still flying on Delta metal.

People Also Ask

SkyMiles is more than just a frequent flyer program, it is a loyalty program. With SkyMiles partners, get closer to your next adventure by earning miles with the everyday products and services you enjoy. Earn miles on dining out, overnight stays, rideshares, shopping sprees and more with the brands you love.

MORE DETAILS

You can request miles for eligible flights if it's been at least 3 days since you completed travel. We'll reply to the email address in your account.

MORE DETAILS

For the most current information about a financial product, you should always check and confirm accuracy with the offering financial institution. Editorial and user-generated content is not provided, reviewed or endorsed by any company. 35,000 Delta miles are worth an average of $392, according to WalletHub data.

MORE DETAILS

Most airlines, Keyes said, allow travelers to request miles three to 14 days after booking and within 12 months of travel.

MORE DETAILS

In principle, these could vary at the level of each individual flight. In practice, when booking through an airline's website you'll simply be prompted for a single frequent flyer number, with the following effects: It will apply to all flights on the PNR. It will apply for both mileage earning and determining status.

MORE DETAILS

Under the SkyMiles Mileage Expiration policy, miles do not expire. Delta reserves the right to deactivate or close an account under the following circumstances: Fraudulent activity occurs. A Member requests an account closure.

MORE DETAILS

Yes. You can sell your Delta miles with us in exchange for cash. We, at MilesBuyer, ensure that you can sell your accumulated Delta SkyMiles without any hassle and get the money that you need. Give us a call at 1-800-511-0315 and we would guide you through the process.

MORE DETAILS