According to the U.S. Bureau of Labor Statistics, prices for airline fares were 0.19% higher in 2019 versus 2018 (a $0.19 difference in value).

**Between 2018 and 2019:** Airfare experienced an average inflation rate of 0.19% per year.
In other words, airfare costing $100 in the year 2018 would cost $100.19 in 2019 for an equivalent purchase.
Compared to the overall inflation rate of 1.81% during this same period, inflation for airfare was
lower.

Raw Consumer Price Index data from U.S. Bureau of Labor Statistics for *Airline fares*:

Year |
2018 | 2019 |

CPI |
264.909 | 265.401 |

Below are calculations of equivalent buying power for Airfare, over time, for $100 beginning in 2018. Each of the amounts below is equivalent in terms of what it could buy at the time:

Year | USD Value | Inflation Rate |
---|---|---|

2018 | $100.00 | - |

2019 | $100.19 | 0.19%* |

CPI in 2019 / CPI in 2018 * 2018 USD value = 2019 USD value

Then plug in historical CPI values from above. The CPI for Airline fares was 264.909 in the year 2018 and 265.401 in 2019:

265.401 / 264.909 * $100 =

Therefore, according to U.S. Bureau of Labor Statistics, $100 in 2018 has the same "purchasing power" as $100.19 in 2019 (in the CPI category of Airline fares).