What is the cheapest airport shuttle from NE Portland to PDX?|120858

I live in NE Portland and am only 5 or 10 (max) miles from PDX. I have a 6 AM flight so too early for the bus/max and I don_t want to drive. Any tips on the cheapest way to get there, like flat rate shuttle? I can cab it for about $20 but that seems like a lot when I can hear the roar of jet engines over my head at my house. Any tips most appreciated!

Check the schedule below. MAX begins running at around 03:30. At the Rose Quarter either the 4:13am or 4:43am lines would get you to the airport by 5:11. That_s probably early enough.