Overair

Overair

Electric tiltrotor eVTOL on-demand transportation

Overview

Overair is developing an electric tiltrotor air vehicle for on-demand travel. Its flagship, the Butterfly, seats a pilot plus five passengers (with luggage) and is powered by a fully electric powertrain, producing zero emissions. The aircraft uses tiltrotor technology to take off and land vertically and then transition to forward flight. It features 20+ ft propellers, quad-redundant key systems, and the ability to hover on two of four propellers, delivering high efficiency and safety. The company differentiates itself through its patented, 15-year-developed technology, larger propellers and higher power margins, and a focus on an on-demand, urban-mlying transportation model rather than traditional aviation. Overair aims to provide a safe, quiet, fast, and affordable alternative to existing modes of travel and to transform the on-demand transportation market with zero-emission air mobility.

About Overair

Simplify's Rating
Why Overair is rated
C-
Rated C on Competitive Edge
Rated C on Growth Potential
Rated D+ on Differentiation

Industries

Automotive & Transportation

Aerospace

Company Size

11-50

Company Stage

Early VC

Total Funding

$170M

Headquarters

Santa Ana, California

Founded

2019

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Simplify's Take

What believers are saying

  • Navy SBIR contract validates Individual Blade Control technology differentiation and defense applications.
  • Partnerships with DFW Airport, Arlington, Clay Lacy Aviation establish operational infrastructure pre-certification.
  • 200% excess power margins enable multiple missions per charge and safe adverse weather operations.

What critics are saying

  • Archer Aviation acquired Butterfly patents and critical employees, directly enabling competitor development.
  • FAA certification delayed beyond 2027 due to novel OSTR and IBC technology scrutiny.
  • Sector funding collapse from Lilium bankruptcy threatens cash runway until unproven 2027 certification.

What makes Overair unique

  • Butterfly's oversized rotors twice the size of competitors enable 60% lower hover energy consumption.
  • Quad-redundant architecture allows safe flight on two of four propellers after propeller stall.
  • 55-decibel noise target positions Butterfly as quietest eVTOL for high-density urban routes.

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Funding

Total Funding

$170M

Above

Industry Average

Funded Over

2 Rounds

Early VC funding comparison data is currently unavailable. We're working to provide this information soon!
Early VC Funding Comparison
Coming Soon

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

401(k) Retirement Plan

401(k) Company Match

Unlimited Paid Time Off

Paid Vacation

Paid Sick Leave

Paid Holidays

Employee Stock Purchase Plan

Fertility Treatment Support

Growth & Insights and Company News

Headcount

6 month growth

3%

1 year growth

3%

2 year growth

-16%
AVweb
Aug 8th, 2025
Archer Aviation Expands Defense Program

As part of the announcement, Archer acquired a patent portfolio from Overair, an electric aerial mobility manufacturer, as well as hired multiple critical employees related to the patents.

StreetInsider
Aug 7th, 2025
Archer acquires Overair assets, raises $1.3B

Archer Aviation (NYSE: ACHR) has made two strategic acquisitions to advance its defense aircraft program. It acquired a patent portfolio and employees from Overair, a Karem Aircraft spin-off, and composite manufacturing assets and a 60,000-square-foot facility from Mission Critical Composites. These moves support Archer's partnership with Anduril to develop hybrid, autonomous military aircraft, following a $1.3 billion capital raise. The Pentagon has requested $13.4 billion for autonomous military systems.

Aircraft Rescue & Fire Fighting Working Group (ARFFWG)
Feb 7th, 2024
Houston hopes to have air taxis flying to the airport by 2026

In Arlington, TX, the Dallas Fort Worth International Airport has partnered with aircraft manufacturer Overair to develop the "Butterfly" aircraft.

Aviation Week Network
Jan 24th, 2024
Overair, Clay Lacy Plan AAM Ops From California FBOs

Overair has partnered with Clay Lacy Aviation to introduce advanced air mobility (AAM) services in Southern California, marking the latest in a wave of similar announcements that have seen air taxi startups partner with fixed-base operators (FBO).

Telangana Publications Pvt. Ltd
Jan 19th, 2024
JetSetGo partners with global firms for Advanced Air Mobility solutions

Hyderabad: JetSetGo, a marketplace for private jet and helicopter charters announced strategic partnerships with three global aviation technology leaders, including Electra.aero, Horizon Aircraft and Overair, to bring Advanced Air Mobility (AAM) solutions to India.

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