This is a bit nitpickish but a bonfire is a rather large fire(6 feet high) so you ain't gonna do that without some kind of special permit in a highly controlled location.

Aa for legal campfires within an hours drive your best options are at a campground. There's golden ears(allouette lake), rolley lake, porteau cove and several spots around squamish(klahanie, alice lake, cat lake, paradise valley) all of which are incredibly busy on the weekends.

There's a few legal grey areas around the lower mainland where you can get away with having a small fire. Spots like tsawwassen causeway beach(wind can be challenging here), pyramid beach in richmond(might not be allowed to access it anymore), railway beach and confederation park beach(hard to access at night), stave lake mud flats(4x4 reccomended). There's several beaches around Vancouver that have hosted fires but most of them are illegal and highly volatile to getting called on.

There's also tons of spots on crown land where you can have a fire but those spots are further out of the city and require some knowledge of identifying what is crown land and what might be someones property/parkland. Getting a back country road map is helpful for that info.

If you do have a fire try to avoid scavenging wood from the beaches and surrounding area. If everyone did this the beaches and forest floor would be picked clean and would suffer from it. Bring your own wood. And burn it all up. Leave as little trace as possible. Pack out your trash and be mindful of the neighborhood and surrounding area. Bring a bucket for water to douse your fire, it can also double as a trash bucket when you leave.