{
    "code": "45",
    "title": "Transportation by Air",
    "sic_manual": "OSHA SIC Manual",
    "level": "Major group",
    "major_group_code": "",
    "parent_code": "40-49",
    "parent_title": "Transportation & Public Utilities",
    "plain_english_definition": "SIC 45 - Transportation by Air covers establishments whose primary activities fall within transportation by air.\n\nMore specific 3-digit industry groups and 4-digit industries within SIC 45 provide the detailed classification.",
    "summary_plain": "",
    "official_definition": "This major group includes establishments engaged in furnishing domestic and foreign transportation by air and also those operating airports and flying fields and furnishing terminal services.",
    "official_source": "https://www.osha.gov/data/sic-manual/major-group-45",
    "classification_note": "",
    "included_activities": [],
    "excluded_activities": [
        {
            "label": "Establishments primarily engaged in performing services which may incidentally use airplanes (e.g., crop dusting and aerial photography) are classified according to the service per...",
            "code": "",
            "title": "",
            "url": ""
        }
    ],
    "confused_codes": [],
    "official_siblings": [
        {
            "code": "40",
            "title": "Railroad Transportation",
            "url": "https://siccode.com/sic-code/40/railroad-transportation",
            "label": "Major group"
        },
        {
            "code": "41",
            "title": "Local and Suburban Transit and Interurban Highway Passenger Transportation",
            "url": "https://siccode.com/sic-code/41/local-suburban-transit-interurban-highway-passenger-transportation",
            "label": "Major group"
        },
        {
            "code": "42",
            "title": "Motor Freight Transportation and Warehousing",
            "url": "https://siccode.com/sic-code/42/motor-freight-transportation-warehousing",
            "label": "Major group"
        },
        {
            "code": "43",
            "title": "United States Postal Service",
            "url": "https://siccode.com/sic-code/43/united-states-postal-service",
            "label": "Major group"
        },
        {
            "code": "44",
            "title": "Water Transportation",
            "url": "https://siccode.com/sic-code/44/water-transportation",
            "label": "Major group"
        },
        {
            "code": "45",
            "title": "Transportation by Air",
            "url": "https://siccode.com/sic-code/45/transportation-air",
            "label": "Major group"
        },
        {
            "code": "46",
            "title": "Pipelines, except Natural Gas",
            "url": "https://siccode.com/sic-code/46/pipelines",
            "label": "Major group"
        },
        {
            "code": "47",
            "title": "Transportation Services",
            "url": "https://siccode.com/sic-code/47/transportation-services",
            "label": "Major group"
        },
        {
            "code": "48",
            "title": "Communications",
            "url": "https://siccode.com/sic-code/48/communications",
            "label": "Major group"
        },
        {
            "code": "49",
            "title": "Electric, Gas and Sanitary Services",
            "url": "https://siccode.com/sic-code/49/electric-gas-sanitary-services",
            "label": "Major group"
        }
    ],
    "official_children": [
        {
            "code": "451",
            "title": "Air Transportation, Scheduled, and Air Courier",
            "url": "https://siccode.com/sic-code/451/air-transportation-scheduled-air-courier",
            "label": "Industry group"
        },
        {
            "code": "452",
            "title": "Air Transportation, Nonscheduled",
            "url": "https://siccode.com/sic-code/452/air-transportation-nonscheduled",
            "label": "Industry group"
        },
        {
            "code": "458",
            "title": "Airports, Flying Fields, and Airport Terminal",
            "url": "https://siccode.com/sic-code/458/airports-flying-fields-airport-terminal",
            "label": "Industry group"
        }
    ],
    "related_naics_codes": [
        {
            "code": "481",
            "title": "Air Transportation",
            "url": "https://siccode.com/naics-code/481/air-transportation"
        },
        {
            "code": "488",
            "title": "Support Activities for Transportation",
            "url": "https://siccode.com/naics-code/488/support-activities-transportation"
        },
        {
            "code": "492",
            "title": "Couriers and Messengers",
            "url": "https://siccode.com/naics-code/492/couriers-messengers"
        },
        {
            "code": "561",
            "title": "Administrative and Support Services",
            "url": "https://siccode.com/naics-code/561/administrative-support-services"
        },
        {
            "code": "621",
            "title": "Ambulatory Health Care Services",
            "url": "https://siccode.com/naics-code/621/ambulatory-health-care-services"
        },
        {
            "code": "811",
            "title": "Repair and Maintenance",
            "url": "https://siccode.com/naics-code/811/repair-maintenance"
        }
    ],
    "example_companies": [
        {
            "name": "American Airlines Group Inc",
            "url": "https://siccode.com/business/american-airlines-group-inc",
            "city": "Fort Worth",
            "state": "TX",
            "reviewed": false
        },
        {
            "name": "Duncan Aviation Inc",
            "url": "https://siccode.com/business/duncan-aviation-inc",
            "city": "Lincoln",
            "state": "NE",
            "reviewed": false
        },
        {
            "name": "JetBlue Airways Corp",
            "url": "https://siccode.com/business/jetblue-airways-corp",
            "city": "Long Island City",
            "state": "NY",
            "reviewed": false
        },
        {
            "name": "Delta Air Lines Inc",
            "url": "https://siccode.com/business/delta-air-lines-inc",
            "city": "Atlanta",
            "state": "GA",
            "reviewed": false
        },
        {
            "name": "Southwest Airlines Company",
            "url": "https://siccode.com/business/southwest-airlines-company",
            "city": "Dallas",
            "state": "TX",
            "reviewed": false
        },
        {
            "name": "Evergreen International Airlines Inc",
            "url": "https://siccode.com/business/evergreen-international-airlines-inc",
            "city": "McMinnville",
            "state": "OR",
            "reviewed": false
        },
        {
            "name": "Republic Airways Holdings Inc",
            "url": "https://siccode.com/business/republic-airways-holdings-inc",
            "city": "Indianapolis",
            "state": "IN",
            "reviewed": false
        },
        {
            "name": "Lufthansa German Airlines",
            "url": "https://siccode.com/business/lufthansa-german-airlines",
            "city": "East Meadow",
            "state": "NY",
            "reviewed": false
        },
        {
            "name": "PHI Inc",
            "url": "https://siccode.com/business/phi-inc",
            "city": "Lafayette",
            "state": "LA",
            "reviewed": false
        },
        {
            "name": "Air Methods Corp",
            "url": "https://siccode.com/business/air-methods-corp",
            "city": "Englewood",
            "state": "CO",
            "reviewed": false
        },
        {
            "name": "Gulfstream International Group Inc",
            "url": "https://siccode.com/business/gulfstream-international-group-inc",
            "city": "Fort Lauderdale",
            "state": "FL",
            "reviewed": false
        }
    ],
    "company_count": 8056,
    "email_contact_count": 3254,
    "phone_count": 6330,
    "website_count": 7663,
    "database_as_of": "Nov 13, 2026",
    "count_type": "commercial",
    "count_disclaimer": "These are SICCODE.com commercial database counts, not official government establishment totals. Website-Reviewed & Enriched is a separate review of company websites for products, services, markets, and fit.",
    "canonical_url": "https://siccode.com/sic-code/45/transportation-air",
    "json_url": "https://siccode.com/sic-code/45.json",
    "reviewed_by": "Industry Classification Review Team",
    "last_updated": "October 2026"
}