I live in Vancouver and have been having the same issue.
I use Shaw.
I went into a custom game and did the tracing command. I wasn't sure what the DNS stuff meant so it's simply my usual game.
Tracing route to 64.7.194.114 over a maximum of 30 hops
1 <1 ms <1 ms <1 ms 192.168.1.1
2 * * * Request timed out.
3 18 ms 15 ms 16 ms rd1bb-ge4-0-0-9.vc.shawcable.net [64.59.153.114]
4 16 ms 16 ms 50 ms rc2bb-tge0-4-1-0.vc.shawcable.net [66.163.69.49]
5 17 ms 11 ms 11 ms rd1bb-ge10-0-0.vc.shawcable.net [66.163.69.182]
6 69 ms 52 ms 53 ms rc4wt-pos15-0-0.wa.shawcable.net [66.163.76.210]
7 44 ms 34 ms 17 ms ae0-101.sea20.ip4.tinet.net [77.67.69.153]
8 52 ms 79 ms 70 ms xe-9-0-0.lax20.ip4.tinet.net [89.149.186.186]
9 45 ms 42 ms 42 ms internap-gw.ip4.tinet.net [77.67.79.58]
10 51 ms 43 ms 42 ms border1.po2-20g-bbnet2.lax010.pnap.net [216.52.255.103]
11 45 ms 49 ms 56 ms 64.7.194.114
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
Whereas my ping is 50 normally it has been 100-150 lately and sometimes returns to normal during a game. Two games out of I'd guess 12 I have experienced a disconnect that makes me reconnect to arrive at the summoner platform.
One of these games I was in a bush luckily, the other was a ranked game that I gave up first blood in because I disconnected in the middle of the lane.
Both times after reconnecting, there are visual bugs that reflect the state of the game when I disconnected: invulnerable minion waves that fight in a state of limbo, Jarvan being struck by an attack sound and visual every second, Ryze permanently ignited etc.
Thanks for your attention so far reapermaster.