Delta Airlines is expanding the number of seats that can be upgraded from economy to premium, but what does Delta seat upgrade mean? And how will it affect you as a customer?

As a frequent traveler, I know how important it is to have a comfortable flight. And while economy seats can be perfectly fine for short trips, longer flights can be a real challenge if you're not in a comfortable seat. That's where seat upgrades come in.

Delta offers several options for upgrading your seat, depending on your destination, fare class, and membership level in their frequent flyer program, Delta SkyMiles. Here's a rundown of the main ways you can upgrade your seat on Delta:

Delta Comfort+: This is an upgraded economy class service that offers more legroom (up to 4 inches), more reclining, and other perks such as priority boarding and a free alcoholic drink. You can purchase Delta Comfort+ seats at the time of booking or later on, either through the Delta website or app, or at the airport. Prices vary depending on the route and availability.

Main Cabin Select: This is a premium economy class service that offers even more legroom (up to 6 inches), more reclining, and other perks such as priority boarding, a free alcoholic drink, and a snack box. Main Cabin Select seats are available on select routes and fare classes, and can be purchased at the time of booking or later on through the Delta website or app. Prices also vary depending on the route and availability.

Delta One: This is Delta's international business class service, offering a lie-flat seat, a private suite, and a variety of dining and entertainment options. Delta One is available on long-haul international flights and can be booked at the time of booking or later on through the Delta website or app. Prices for Delta One vary depending on the route and availability, and can be quite expensive compared to economy or premium economy.

Delta SkyMiles Medallion Upgrades: As a Delta SkyMiles Medallion member (Delta's frequent flyer program), you can use your miles or points to upgrade your seat to a higher class of service. The number of miles or points required for an upgrade depends on the route, fare class, and your Medallion status level (Silver, Gold, Platinum, or Diamond). You can request an upgrade through the Delta website or app, or by calling Delta Reservations.

Delta SkyMiles Upgrade Certificates: As a Delta SkyMiles Medallion member, you can also earn or purchase upgrade certificates that can be used to request an upgrade to a higher class of service. These certificates come in different types (e.g. domestic, international, one-way, round-trip) and have different expiration dates, so it's important to read the fine print before using them. You can request an upgrade using a certificate through the Delta website or app, or by calling Delta Reservations.

In conclusion, Delta offers several options for upgrading your seat, depending on your budget, travel preferences, and loyalty status. Whether you want more legroom, more recline, or a fully private suite, there's a seat upgrade option for you on Delta. Just make sure to plan ahead and book early to increase your chances of getting the seat you want, as availability can be limited.