Marriott Bonvoy Titanium and Ambassador Elite members can get a complimentary United MileagePlus Premier Silver status by linking their accounts. These are the benefits it comes with:

  1. Complimentary access to Economy Plus at check-in for members plus a companion, when available.
  2. Complimentary Premier upgrade confirmation as early as day of departure, when available.
  3. One complimentary checked bag (up to 70 pounds (32 kg)).
  4. Premier Access priority airport services, where available.
  5. 7 award miles for every dollar you spend on United flights.

Additional Benefits

  • Receive 10% more miles when you convert Marriott Bonvoy Points to MileagePlus miles.
  • Receive 10% more miles when you redeem Marriott Bonvoy Points for exclusive RewardsPlus Travel packages.
  • Convert MileagePlus miles to Marriott Bonvoy points at a 1:1 ratio, the only airline where you can convert miles to Marriott Bonvoy points.

If you are already a Marriott Titanium or Ambassador Elite member, it's probably worth linking your accounts, even if your travel with United isn't that much.