My new 11" Macbook air do not have SD card slot, how can I upload photos from my SD card?

I haven't tried it, but a USB flash card reader should do it.

Glenn

I agree with Glenn229.

Four years ago, I purchased this product and am still happy with it:

Kingston 19-in-1 USB 2.0 Flash Memory Card Reader FCR-HS219/1

There may be more current products these days, but that should give you the idea.

I have no financial or any other interest in Kingston. I only use this product as a customer.