I’m sure if you have an Uber account you’ve seen this promo already, but you can enter to win a free roundtrip flight anywhere Alaska Airlines flies with a sweepstakes from Uber. All you have to do is live in certain West Coast cities + Honolulu, enter the appropriate promo code, and take rides on Uber during the sweepstakes period, which aligns with Pride Week in the various cities.
The sweepstakes periods and promo codes are (Los Angeles and Portland are already over, but San Francisco is on right now!)