All members may upgrade any flight using miles.

Upgrades within North America:

Preferred (Elite) members receive unlimited upgrades on every flight except for Transatlantic flights. Based on the Preferred Level, free upgrades clear at 7 days, 3 days, and 1 day prior to flight. Preferred members traveling in full fare (Y, B, or U) may upgrade any time in advance. All Preferred members may also request an upgrade for one companion travelling on the same flight.

Transatlantic Upgrades:

Top tier (Chairman's Preferred) Elite members receive two one-way transatlantic upgrades for their own use, plus two additional one-way upgrades valid for a companion. The upgrades are only valid for tickets purchased in Y, B, M, H, K, Q, and V classes of service. Tickets purchased in Y or B class may be upgraded any time in advance. Tickets purchased in M, H, K, Q, and V may be upgraded no earlier than 7 days prior to departure.