Overair
Overair was a Santa Ana, California-based eVTOL aircraft developer and Karem Aircraft spin-off building the Butterfly, a full-electric vertical takeoff and landing prototype aimed at urban air taxi operators, prior to its 2025 asset acquisition by Archer Aviation.
- Company typePrivate
- Founded2019
- HeadquartersSanta Ana, United States
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What Overair does
Overair was a US-based electric vertical takeoff and landing (eVTOL) aircraft developer founded in 2019 as a spin-off from Karem Aircraft and headquartered in Santa Ana, California. The company's core product, the Butterfly prototype, was a full-electric eVTOL designed for urban air mobility applications, intending to serve commercial air taxi operators seeking zero-emission short-haul transportation in congested metropolitan areas. The technology was differentiated within the eVTOL sector by an exclusively all-electric (as opposed to hybrid) propulsion architecture, leveraging rotorcraft heritage from Karem Aircraft, and the firm held a patent portfolio covering its aircraft design and composite manufacturing processes.
Overair operated as a pre-commercial aerospace development company, having raised approximately $170 million cumulatively across a 2019 seed/Series round ($25 million from Hanwha Systems) and a 2022 round ($145 million led by Hanwha Aerospace and Hanwha Systems). Capital was deployed against Butterfly prototype completion (targeted for H2 2023) and pursuit of FAA type certification. The company employed between 51 and 100 personnel across engineering, manufacturing, business development, and mobility operations, led by CEO and co-founder Ben Tigner with Abraham Karem serving as co-founder and Head of Preliminary Design.
Overair never reached commercial production and had no disclosed revenue, pricing model, or customer orderbook. By 2025, Archer Aviation acquired Overair's patent portfolio, composite manufacturing assets, and a number of its employees, after which Overair ceased independent operations and its corporate website became unreachable. The competitive context included roughly 15 major eVTOL industry players (Joby, Archer, Vertical Aerospace, Lilium, Wisk, Embraer Eve, Boeing, Airbus, among others), addressing an addressable market projected to expand from USD 1.4 billion in 2025 to USD 34.6 billion by 2035 at a 37.8% CAGR, driven by urban congestion and decarbonization mandates.
Overair firmographics
Firmographics- Name
- Overair
- Legal name
- Overair
- Website
- https://overair.com
- Company type
- Private
- Founded year
- 2019
- Operating status
- Acquired
- Headcount range
- 51–100 employees
- Short description
- Overair was a Santa Ana, California-based eVTOL aircraft developer and Karem Aircraft spin-off building the Butterfly, a full-electric vertical takeoff and landing prototype aimed at urban air taxi operators, prior to its 2025 asset acquisition by Archer Aviation.
- Ownership category
- akta.pro rank
Overair industry classification
Industry- Product category
- Electric Vertical Takeoff and Landing (eVTOL) Aircraft
- NAICS
- Aircraft Manufacturing (336411), Other Aircraft Parts and Auxiliary Equipment Manufacturing (336413)
- SIC
- Aircraft (3721), Aircraft Parts & Auxiliary Equipment, Nec (3728)
- akta.pro primary industry
- VTOL & Hybrid UAV Platforms (IMABAIAC)
- akta.pro secondary industries
- Electric & Hybrid-Electric Propulsion (eVTOL/Regional) (IMABADAH), Air Taxi & Urban Air Mobility (eVTOL) Operators (TLAFAAAD)
Keywords
Where Overair is headquartered
LocationHeadquarters
- HQ city
- Santa Ana
- HQ country
- United States
- HQ region
- North America
Markets served
Overair business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Supply Chain, Operations, Infrastructure
Overair product offering
Product offeringCore offering
Overair designed, developed and manufactured electric vertical takeoff and landing (eVTOL) aircraft for the urban air mobility market. Its flagship offering, the Butterfly prototype, is a full-electric VTOL aircraft intended to provide quiet, zero-emission, short-haul air transportation for commercial operators in congested metropolitan areas. The aircraft was in development targeting FAA type certification and commercial air taxi deployment.
Product overview
Overair was a company developing electric vertical takeoff and landing (eVTOL) aircraft. The company offered the Butterfly prototype, an electric VTOL aircraft that was in development targeting FAA certification. Note: Overair's patents and employees were subsequently acquired by Archer Aviation (a Karem Aircraft spin-off), indicating the company may no longer operate independently.
Differentiator
Problem solved
Functional benefit
Brands
- Butterfly: Electric vertical takeoff and landing (eVTOL) aircraft prototype developed by Overair.
Products and services
- Butterfly eVTOL Aircraft Full-electric vertical takeoff and landing (eVTOL) aircraft prototype designed for commercial urban air mobility and air taxi operations, intended to provide quiet, zero-emission short-haul passenger transport in metropolitan areas. Targeted at commercial UAM operators, air taxi service providers, and strategic aerospace/defense partners pursuing next-generation electric vertical lift capability.
Companies that use Overair
Customer profileSegments1 record
Ideal customer profiles2 records
Overair technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature1 record
Overair partnerships and signals
Strategic signalScale indicators3 records
Recent moves6 records
Expansion highlights4 records
Overair competitors and assessment
Company assessmentMarket position
Strengths4 records
Competitive moat3 records
Key risks6 records
Key highlights5 records
Customer concentration
Overair social profiles
Digital presenceOverair financial estimates
Financial estimateRevenue estimate
Valuation estimate
Overair leadership team
Management profileNumber of profiles
Profiles7 records
Overair funding detail
Funding detailFunding overview
Funding rounds2 records
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Overair M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Overair
What does Overair do?
Overair designed, developed and manufactured electric vertical takeoff and landing (eVTOL) aircraft for the urban air mobility market. Its flagship offering, the Butterfly prototype, is a full-electric VTOL aircraft intended to provide quiet, zero-emission, short-haul air transportation for commercial operators in congested metropolitan areas. The aircraft was in development targeting FAA type certification and commercial air taxi deployment.
Is Overair a public or private company?
Overair is a private company. It is classified as venture growth investor backed and is currently acquired.
When was Overair founded?
Overair was founded in 2019. It employs 51 to 100 people.
Where is Overair based?
Overair is headquartered in Santa Ana, United States, in the North America region.
Does Overair have an API?
No public API is recorded for Overair.
What industry is Overair in?
Overair's product category is Electric Vertical Takeoff and Landing (eVTOL) Aircraft. Its primary akta.pro industry code is IMABAIAC, VTOL & Hybrid UAV Platforms, with a secondary code of IMABADAH, Electric & Hybrid-Electric Propulsion (eVTOL/Regional). Its NAICS code is 336411 and its SIC code is 3721.