No, you and your husband cannot share a single Delta SkyMiles account. In 2026, Delta’s program rules strictly state that only one person may be enrolled per account and accounts must match the "full legal name" on the traveler's passport. Sharing passwords or login credentials for the purpose of joint mileage accumulation is a violation of the terms of service and can lead to account termination. Unlike airlines like JetBlue or British Airways, which offer "Family Pooling," Delta does not have a free way to combine miles. If you wish to use miles from both accounts for a single trip, your best option is the "Transfer Miles" program, though this is quite expensive, costing $0.01 per mile plus a $30 processing fee. A more cost-effective strategy is for one spouse to book an "Award Ticket" for the other using their own miles, or to utilize the "Miles + Cash" option during checkout. For couples looking to maximize benefits, it is better to maintain separate accounts and use a co-branded American Express card that allows you to "gift" or transfer points from a shared household credit card account into an individual SkyMiles balance.