If you’re wondering how long to transfer Amex points to Delta, the short answer is that it’s usually instant. American Express Membership Rewards points typically show up in your Delta SkyMiles account within minutes. But the official terms allow longer, a fee applies, and the transfer can’t be reversed. Here’s what to know before you click submit.

How Long to Transfer Amex Points to Delta

In practice, transfers from Membership Rewards to Delta SkyMiles are generally reported as instant, as long as your SkyMiles account is already linked.

The official wording is more cautious. Past Amex offer terms tell cardmembers to allow up to 2 business days for points to arrive in SkyMiles. Some guides cite a 48-hour window.

So plan for instant, but don’t cut it so close that a delay would cost you the seat. Linking your SkyMiles account ahead of time removes one step when you’re ready to book.

The Transfer Rules

• Ratio: 1:1. 1,000 Amex points become 1,000 SkyMiles.
• Minimum: 1,000 points, in 1,000-point increments.
• Name match: The name on your SkyMiles account must match the name on your Amex account.
• No reversals: Once points move to Delta, you can’t move them back to Membership Rewards.

If you have a Delta co-branded Amex card, such as the Delta SkyMiles Reserve, you earn SkyMiles directly. There’s nothing to transfer.

The Excise Tax Offset Fee

Amex charges an excise tax offset fee when you transfer points to a U.S. airline program like Delta. The fee is $0.0006 per point, up to $99 per transfer. Amex says this offsets the federal excise tax it pays on these conversions.

Amex may offer to let you pay the fee with points. Paying with your card is usually the better choice, because using points this way gives them low value.

Find the Award Before You Transfer

Because the transfer is one-way, find the flight first. Confirm the award seat on delta.com, and if you’re flexible, compare it with partner options using a free award search tool such as amex.point.me (available to U.S.-issued Amex cardholders).

Example: You find a Delta award for 45,000 SkyMiles and have 20,000 miles already. Transfer 25,000 Amex points, pay a $15 fee, and you have exactly 45,000 SkyMiles. Transferring your whole balance “just in case” would lock flexible points into one airline.

Delta Amex Card: An Alternative to Transferring

If you fly Delta often, a Delta Amex card earns SkyMiles directly, so there’s nothing to transfer and no excise tax fee. The trade-off: SkyMiles can only be used with Delta and its partners, while Membership Rewards points can go to many airlines and hotels.

The four personal Delta SkyMiles cards from American Express:

If you already have Membership Rewards points, keep transferring them only when you need miles for a specific award. A Delta card makes more sense if you fly Delta regularly and will use the bag and companion benefits.

Bottom Line

Amex-to-Delta transfers are usually instant, but the official terms allow up to two business days. Find your award first, transfer only what you need, and pay the excise fee with your card rather than with points.