150+ Star Club
You can also put LL's in your name and have many stored up in gifts waiting to be collected to fly more fights during the map time.Following what @exwhy said
This is easiest to do with the maps gained from the Green Launches, as the flights use Owls.
There are 5 destinations, so 5 maps that are required.
The way that I earn them is as follows;
Fly Owl planes to earn 100/100 landing lamps.
Each flight while the map is active requires 17 fuel to fly, and 34 fuel for an instant return. 51 fuel in total for a single flight. You have 100 flights, so to complete 100 flights in the 3 hours the map is active will require 5,100 fuel. This is the same as 255 F20 barrels, or 102 F50 barrels. F20 can be gifted from your neighbours, but this will go straight into your fuel bar so choose when to accept it wisely.
Once you have enough fuel and resources, activate one map, and fly until you deplete your landing lamp supply. I would expect to get 4-6 collections per 100 flights, 6-8 collections if you use a Golden Dice bonus. (Note that the first time you fly this will likely be less, as you have 0 items collected for each collection, whereas I only need a single item to complete a collection).
Repeat this process for each of the 5 maps, and you will have 4-10 QL bonuses.
This sounds really painful to begin with, but once you have done this a few times and have a few collections already complete, it is a pretty painless way to gain QLs.