These are the best and worst-performing airlines in the world.

Aside from variations in cabins and service quality, there’s the major concern of how likely you are to get delayed. Fly on the wrong airline and your odds of a delay are as high as 55%! choose the right one and that number shrinks way down to just 11%.

That’s enough to ruin your vacation or to make it better.

But how do you know which airlines to steer clear of, and which ones to prioritize?

Every year, the aviation insights company FlightStats puts together a list of the international airlines with the best on-time performance records.

Now they have shared their annual findings so we can see the winners and losers.

These are the results:

 

The worst 10 international airlines of 2016:

 

10. Hainan Airlines – 30.3 % of experiencing a delay in the flight time.

9. Korean Air – 31.74 %

8. Air China – 32.73 %

7. Hong Kong Airlines – 33.42 %

6. China Eastern Airlines – 35.8 %

5. Asiana Airlines – 37.46 %

4. Philippine Airlines – 38.33 %

3. Air India – 38.71 %

2. Icelandair – 41.05 %

1. El Al – 56 %

 

And now the best 10 International airlines of 2016:

 

10. Qantas – 15.7 %

9. TAM Linhas Aéreas – 14.93 %

8. Delta Air Lines – 14.83 %

7. Singapore Airlines – 14.55 %

6. ANA – 14.46 %

5. Austrian – 14.26 %

4. Qatar Airways – 13.66 %

3. JAL – 12.2 %

2. Iberia – 11.82 %

1. KLM – only 11.47 % for a flight to be delayed.