{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"definitions","count":1,"filters":{"market":"us-airline-domestic-passengers","matched":true,"marketId":"mkt-airlines","slug":"us-airline-domestic-passengers","name":"U.S. domestic airline passengers"},"rows":[{"id":"def-airlines","marketId":"mkt-airlines","productBoundary":"Domestic scheduled airline passenger traffic","geographicBoundary":"United States domestic itineraries","measurementBasis":"Carrier share of domestic scheduled passengers","denominator":"Passengers reported in the BTS domestic market-share table for the 12 months ending February 2026","included":"Named carriers and the published aggregate Other category","excluded":"Individual carriers inside Other are not separately identified","metricFamily":"passenger_shares","definitionStatus":"agency_defined","crossMarketUse":"not_comparable","timeSeriesUse":"snapshot_only","sourceId":"bts-transtats-2026","dataYear":2026,"confidenceLevel":"high","methodologyNote":"Use sourced carrier passenger shares for top-firm and CR4 screens; withhold HHI while Other remains aggregated.","limitations":"The aggregate Other row prevents a complete firm-level distribution and therefore prevents a publishable HHI.","marketSlug":"us-airline-domestic-passengers","marketName":"U.S. domestic airline passengers","marketShortName":"Domestic airlines","sector":"Transportation","geography":"United States","marketNaicsCode":"481111","industryHref":"/industries/481111","crosswalkHref":"/markets/economy?bridgeMarket=us-airline-domestic-passengers&bridgeNaics=481111#market-industry-crosswalk","sourceTitle":"TranStats airline domestic market share March 2025-February 2026","sourcePublisher":"Bureau of Transportation Statistics","sourceUrl":"https://transtats.bts.gov/Homepage.asp","sourceAccessDate":"2026-05-16","sourceProfileHref":"/sources/bts-transtats-2026"}]}