Quarterly Domestic Air Fares from the U.S. Department of Transportation

The Department of Transportation provides average domestic air fare data by quarter. The dataset is updated quarterly and includes information on air carriers and fare trends. It is sourced from the Aviation Facts Figures program.

Use Cases

• Analyze airfare trends over time using the quarterly average fare data.
• Compare average domestic fares across different air carriers.
• Model seasonal fluctuations in domestic air travel costs using quarterly data points.

Strengths

• Data is provided by the authoritative U.S. Department of Transportation.
• The dataset is updated quarterly, offering recent information.
• Covers domestic air travel within the United States.

Limitations

• The specific number of data rows and columns is unknown, limiting assessment of scale.
• Data granularity is limited to quarterly averages, not individual ticket or route-level detail.
• The 'other-license-specified' license requires careful review for usage terms.

Provenance

Source

U.S. Department of Transportation

Collection Method

Aggregated from domestic air carrier reporting.

Time Range

Quarterly data, specific date range unknown.

Freshness

Updated quarterly, with a last recorded update in February 2026.

Geography

Domestic air travel within the United States.