The definition of an active cigarette smoker in this study was calculated using the smoking index (SI) as the number of packs smoked daily multiplied by the number of years of smoking

There are four different pricing bands, and heres the pricing as of April 1, 2026: For domestic flights (only within England, Scotland, Wales, and Northern Ireland), the APD is 8 (~$11) in economy, and 16 (~$21) in a premium cabin For international flights of up to 2,000 miles (short haul), the APD is 15 (~$20) in economy, and 32 (~$42) in a premium cabin For international flights of 2,001 to 5,500 miles (long haul), the APD is 102 (~$135) in economy, and 244 (~$322) in a premium cabin For international flights of more than 5,500 miles (ultra long haul), the APD is 106 (~$140) in economy, and 253 (~$334) in a premium cabin Now, there are some further details to be aware of: For these purposes, a premium cabin would include anything other than economy, so it includes premium economy, business class, and first class If you upgrade your seat the higher UK APD applies, which is why many airlines will request a co-pay when upgrading a flight out of the UK (to account for this cost) The distance isnt measured between your origin and destination, but rather between London and the capital city of the country youre traveling to The distance isnt measured by the distance of your nonstop flight from the UK, but rather by your final destination on your itinerary (assuming continuous travel with no stopovers of more than 24 hours)

DTL (Direct-to-Lung) vs MTL (Mouth-to-Lung): What's the difference
Nicogel is like a breath of fresh air for smokers and non-smokers suffering from second-hand cigarette smoke
Will cleaning remove cigarette smoke smell