If you have a March birthday and book a flight and fly by April 30th, Delta will give you 2,500 extra miles as a "gift." I just successfully registered, so look forward to banking those miles later this month on a trip to Boston. Registration link. Asia Pac registration link.

Full details:

GET READY TO GET AWAY

YOUR BIRTHDAY GIFTS MAKE IT POSSIBLE.

It's time to start the celebration!

Our birthday gifts to you are waiting: You can get 2,500 bonus miles on your next round-trip flight and a $100 e-certificate toward a Delta Vacations^® getaway.

First register, then book your round-trip ticket by March 31, 2011 and complete your travel by April 30, 2011 to receive your 2,500 birthday bonus miles.

Then take a look at all that Delta Vacations offers and start planning your next great getaway. Use your birthday e-certificate to save $100 on a Delta Vacations getaway to over 250 of the most popular destinations. What's more, when you book a Delta Vacations getaway you can earn up to another 7,500 bonus miles, in addition to credited flight miles on that trip.