To compare the fleet age and evaluate which airline has the newer planes between United Airlines and Delta Air Lines, we first look at the relevant data on United Airlines.

According to multiple sources, United Airlines recently reported an average fleet age of approximately 15.9 to 16.4 years as of March 2025. The airline possesses a fleet of 1,015 aircraft, with plans to retire 21 older planes within the year and further deliveries planned until 2032, starting in January 2026. This indicates a proactive approach to updating their fleet and improving service quality (source: Planespotters.net, Wikipedia, Simple Flying).

Now, it is crucial to compare this with Delta Air Lines. However, additional data about Delta's fleet age was not included in the current search results.

To determine which airline has newer planes and which one might be considered better, we require an assessment of Delta's average fleet age, which could ideally focus on specific metrics such as passenger comfort, service quality, and fleet management practices in conjunction with fleet age.

In conclusion, while United Airlines has a maximum average fleet age of around 16.4 years and is making efforts to update their aircraft, further information regarding Delta's fleet age and key performance indicators is necessary for a fair comparison. Without this data, a definitive answer on which airline is "better" based on newer planes cannot be provided.When comparing the fleets of United Airlines and Delta Air Lines, both carriers maintain a modern selection of aircraft, but there are notable differences in fleet age.

As of March 2025, United Airlines has a fleet size of 1,015 aircraft with an average age of approximately 15.9 years. The airline has planned to retire 21 older aircraft early in 2025 and has additional deliveries scheduled until 2032, indicating a focus on refreshing its fleet source: United Airlines fleet - Wikipedia, source: United Airlines to Retire 21 Aircraft Early In 2025 - Simple Flying.

In contrast, Delta Air Lines has a fleet of 988 aircraft with a slightly younger average fleet age of 14.9 years as of the same timeframe source: Delta Air Lines fleet - Wikipedia. Delta has also been actively updating its fleet, including plans to introduce new aircraft source: Delta Air Lines Fleet Details and History - Planespotters.net.

In conclusion, Delta Airlines operates a fleet with a slightly newer average age compared to United Airlines. If you are considering which airline has the newer planes, Delta takes the lead in this regard. Both airlines have made substantial investments in modernizing their fleets, but Delta's average fleet age being less implies it has the advantage in operating newer aircraft.

Sources

Delta Air Lines Fleet Details and History - Planespotters.netDelta Air Lines fleet - WikipediaOlder than Google: A look at Delta's oldest planes - AeroTimeFleet age Delta Air Lines | Airfleets aviationWhat Is The Oldest Active Aircraft In Delta Air Lines' Fleet?Why It Won't Be Decades Until Delta Air Lines Retires This AircraftDelta Air Lines Fleet - 2025 - Airliners.net

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