Poll: My parents are coming to see me ____ the spring.
- Votes: 272
- Comments: 2
- Added: November 2010
- Polls: 1,171
- Votes: 691,569
- Comments: 4,861
"on" would mean they were perched on a springy object. "at" is wrong because Spring is a period not a specific time.
My parents are coming to see me in the spring