With news that JetBlue is expected to announce its next major airline partnership in the coming months, speculation over which airline that will be — and what it will mean for frequent flyers — is swirling.

JetBlue Airways is getting ready to announce a partnership with another U.S. airline with a larger network in the coming weeks, the carrier’s president said Tuesday.

The partnership with United is envisioned as quite different from the NEA, the sources said. While the alliance is expected to focus on providing greater connectivity to customers and allowing them to earn and burn frequent-flier miles,