There are two airlines offering flights to Tenerife. The most direct route isn’t necessarily the cheapest – being flexible is key to finding the lowest airfare rates. For example, try searching by month to see the best time of the week to fly. The cheapest date is currently 04 / Jan / 2022.
You can use the filters on your search to see more flights and find cheaper rates – Tenerife has more than one airport. So if you don't need to fly into Tenerife Sur Reina Sofia Airport, it's worth checking your other options. The 3244 km flight usually takes about 7 hrs 35 mins.
There are about 18 flights to or via Tenerife every week, so you have plenty of options.
If you're planning on going to Tenerife during this time, you could take a look at other airport options. Or you could try to get a last-minute bargain.