There are a lot of Boeing 787 in the air at any time. You can go to flightradar24.com, click the filter icon at the bottom, add new filter, then aircraft and as ICAO code you just enter B78*
and it will show you only this aircraft type.
The risk for an incident with any 787 at any time in the next few years may be higher that it should be. But the risk for one individual plane on one single flight is absolutely negligible. You’re more in danger on your way to the airport probably.
Off topic, but I think it’s funny how cycling is viewed in different parts of the world. You look at it as a hobby that is naturally done less in the winter. For me it’s just a way to get to work and I still have to work when it’s cold, so obviously I’m still cycling just as much. And this is true for a lot of people, the bike rack at my job is almost as full in the winter as it is in the summer.