United Airlines generally does not offer free "upgrades" to Economy Plus for standard passengers; instead, Economy Plus is treated as a "preferred seating" product that must be purchased. However, if you hold United Premier (Elite) status, you are eligible for complimentary access. Premier Silver members can confirm an Economy Plus seat for themselves at the time of check-in (24 hours before flight), while Premier Gold, Platinum, and 1K members can select an Economy Plus seat at the time of booking for themselves and up to eight companions on the same reservation. For non-status flyers, the only way to get a "free" move into Economy Plus is if the standard Economy cabin is completely full and the gate agent must move passengers forward for weight and balance or seating capacity reasons—though this is rare and unpredictable. In 2026, United also offers "Economy Plus Subscriptions," allowing frequent travelers to pay an annual fee for unlimited access to those extra-legroom seats on all their flights, effectively bypassing the per-flight purchase cost.