American Airlines has a small business program. It’s designed for companies that aren’t going to have corporate-level agreements with an airline that come with discounts or rebates. Instead they offer points redeemable for travel and services from the airline.

The good news is that even some of the smallest businesses can join and can ‘double dip’. The traveler earns frequent flyer miles as usual, and the company earns points in the separate Business ExtrAA program on top. Other airlines have similar programs like Delta (Sky Bonus) and United (Perks Plus).

I’ve used American’s program for my company to gift complimentary gold elite status, American Airlines Admirals Club members, and most often to redeem for confirmed one-segment domestic upgrades known as BXP1 certificates (which are now electronic and can be redeemed online).

Enroll at BusinessExtrAA.com using promo code 21MAR650 by March 31 and then travel within 90 days of enrollment and you earn enough points in the Business ExtrAA program for a confirmed domestic upgrade.

In addition to earning travel awards, earn 650 Business Extra points (enough for a one-way upgrades1) when you enroll by March 31, 2021 with code 21MAR650 and fly within 90 days.

• When you book at AA.com there’s a place to enter your Business ExtrAA number in the reservation. (Mine is saved to my profile so populates automatically.)

• Or you can call to add it, or even add it post-travel.

What you earn is 650 Business ExtrAA points, enough for a BXP1 upgrade award for one flight segment. This isn’t as generous as the unprecedented 2000 point offer last April when almost nobody in the country was flying, but it’s still quite nice.

(HT: Philip G.)