68 Y Combinator companies in Aviation and Space, with team size, growth, open roles and funding.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
| Company | Batch | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
Building humanity’s multiplanetary future. | W16 | 2,015 | +6% | +20% | 244 | $1.4B | Series F$20M, Nov 2023 |
Advanced satellites for high orbits. | W16 | 564 | +7% | +20% | 103 | $1.7B | Debt$468M, Sep 2026 |
Seamless mobility to, through, and from space. It starts with 100%… | W21 | 451 | +17% | +33% | 4 | $2.4B | Series E$1B, Sep 2026 |
Economically and environmentally sustainable supersonic travel | W16 | 365 | +10% | +22% | 14 | $732M | Undisclosed round$300M, Dec 2025 |
All-electric seagliders for fast, affordable regional transportation | W21 | 288 | +11% | +15% | 30 | $327M | Debt$120M, Aug 2026 |
Autonomous electric airplanes | S17 | 140 | +6% | +40% | 8 | $88.1M | Series B$40M, Sep 2024 |
Turning space into a transportation layer for Earth | S21 | 131 | +20% | +30% | 3 | $54.3M | Series A$44M, Nov 2024 |
We visually monitor space objects for governments and defense | S21 | 125 | +12% | +21% | 0 | $38.4M | Series B$26.4M, Sep 2026 |
First electric business aircraft designed for hydrogen propulsion | W22 | 91 | −6% | −1% | 0 | $20M | Series A$20M, Oct 2024 |
Heart makes electric airplanes with an all-electric range of 250 miles | W19 | 89 | +14% | +24% | 2 | $151M | Grant$4.1M, Sep 2024 |
Bluetooth to Space | W22 | 88 | +16% | +31% | 2 | $291M | Series C$200M, Sep 2026 |
Full-stack VLEO satellite missions | W21 | 78 | +13% | +20% | 6 | $103M | Series A$35M, Jan 2024 |
Supersonics for the new Jet Age | W24 | 71 | +51% | +137% | 45 | $27.6M | Series B$27.1M, Jul 2026 |
The space infrastructure services company | S18Public | 67 | +14% | +24% | 0 | $237M | Post-IPO equity$25M, Jun 2026 |
Data centers in space | S24 | 66 | +57% | +128% | YC | $444M | Series A$250M, Aug 2026 |
Building and Protecting an Exciting Future | S23 | 62 | 0 | $80M | Series A$80M, Jul 2026 | ||
High-res hyperspectral pictures of Earth from space | W22 | 57 | 0% | +8% | 0 | $20.7M | Debt$2.2M, Mar 2026 |
The lightest electric aircraft motors in the world. | W21 | 57 | +4% | +21% | 0 | $24.6M | Series A$20M, Aug 2024 |
We're building satellites to create a real-time 3D map of the world. | S22 | 55 | +31% | +38% | 9 | $56.6M | Undisclosed round$21M, Jul 2026 |
Vertical takeoff and landing aircraft for major airlines | S21 | 51 | −4% | +11% | 3 | $42.1M | Undisclosed round$173K, Apr 2026 |
Boeing for electric planes | W17 | 50 | +11% | +9% | YC | $4.1M | Grant$3.3M, Aug 2024 |
Orbital logistics: Unleashing space industry, from Earth to asteroids | S21 | 34 | +26% | +3% | YC | $9.5M | Undisclosed round$2.5M, Sep 2025 |
Last-mile delivery for satellites. | S19 | 31 | 0% | +7% | 0 | $150K | YC investment$150K, Jan 2021 |
High Thrust Space Vehicles for Satellite Defense | W25 | 26 | +53% | +117% | 1 | $8.8M | Seed$8.8M, Aug 2025 |
AI systems for aviation | W25 | 22 | +10% | +29% | 0 | $500K | YC investment$500K, Mar 2025 |
Autonomous Stratospheric UAVs | S21 | 21 | +17% | +17% | YC | $450K | Seed$450K, Jan 2023 |
We build advanced satcom user terminals | W20 | 19 | +12% | +36% | 3 | $23.6M | Corporate round$10M, Nov 2025 |
We make the world's most efficient aircraft | S22 | 16 | +7% | 0 | SeedJan 2024 | ||
We make satellites to image everywhere on Earth, every 15 minutes | W21 | 16 | 0% | −6% | 1 | $3.4M | Grant$3.4M, Jan 2026 |
Vertical AI for highly-regulated manufacturing | X25 | 14 | +8% | +56% | 1 | $500K | YC investment$500K, Sep 2025 |
Building persistent, high-performance infrastructure in the sky | W23 | 13 | +18% | 0 | $5M | Seed$4.5M, Jan 2024 | |
Space solar arrays that grow to the size of a football field in orbit | W26 | 12 | 5 | $10.5M | Seed$10M, Jul 2026 | ||
Airplanes anyone can fly | S22 | 12 | +71% | +140% | YC | $4.6M | Undisclosed round$4.6M, Oct 2025 |
The highest-accuracy global weather data from low-cost flat satellites | W21 | 12 | +33% | +50% | 0 | SeedApr 2024 | |
Agent-Driven Engineering | W24 | 11 | +22% | YC | $5.6M | Seed$5.6M, Dec 2025 | |
Constellations as a Service | W24 | 11 | +38% | +83% | 0 | $4M | Seed$3.5M, May 2024 |
Reusable Satellites | W25 | 10 | −41% | −41% | YC | $7.1M | Seed$7.1M, Dec 2025 |
24/7 satellite connectivity in low Earth orbit | F24 | 9 | −10% | 2 | $4.3M | Seed$4.3M, Jul 2025 | |
Unified flight software and hardware for the mission of tomorrow | W24 | 9 | +29% | +29% | 0 | $2M | Pre-seed$2M, Feb 2024 |
The Modular Interceptor Platform | F25 | 8 | YC | $500K | YC investment$500K, Dec 2025 | ||
Emission free hydrogen electric aircraft | W23 | 8 | −58% | −62% | 0 | $2.2M | Grant$161K, Jul 2025 |
Hypersonic space plane that can take-off from any location and weather | S22 | 8 | 0% | −20% | 0 | $1M | Pre-seed$1M, Jul 2022 |
Commercial alternative to the Deep Space Network | X25 | 7 | −12% | +17% | YC | $5.9M | Seed$5.9M, Jul 2025 |
In-Space Refueling | S24 | 6 | 0% | 3 | $6.8M | Seed$6.3M, Jun 2026 | |
Foundation models for 24/7 Earth Observation | W26 | 5 | 0 | Seed (before YC)Dec 2025 | |||
The GD&T Analysis Platform for Engineering Drawings | S25 | 5 | −17% | −17% | 0 | $500K | YC investment$500K, Sep 2025 |
Building lunar landers | W25 | 5 | 0 | SeedMar 2025 | |||
Building low-cost cruise missiles | S24 | 5 | −17% | −17% | 0 | $500K | YC investment$500K, Aug 2024 |
Tesseract builds better thrusters for modern satellites | S17 | 5 | 0% | 0% | 0 | $929K | Equity crowdfunding$929K, Dec 2018 |
Prime Lightworks Inc. manufactures electric propulsion systems for… | S16 | 5 | 0% | 0% | 0 | $1.2M | Equity crowdfunding$24K, Apr 2023 |
Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.
Each company is matched to Crustdata by its website. Crustdata adds team size and its change over 6 and 12 months, open roles from job postings, reported funding, and founders' past employers.
Hiring the most counts distinct roles posted in the last 60 days. Growth needs 10+ people today, shrinking 20+ a year ago, so tiny teams do not top the lists. Rebuilt every week.
The numbers on this page come from three Crustdata API calls. Crustdata tags 5,000+ companies with Y Combinator as an investor; swap the filter for any investor, industry or headcount range and track your own list, with founders' work emails one call away.
# 1. every company with Y Combinator as an investor curl https://api.crustdata.com/company/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "field": "funding.investors", "type": "in", "value": ["Y Combinator"] }, "fields": ["basic_info.name", "headcount.total", "headcount.growth_percent", "funding.total_investment_usd"], "limit": 100 }' # 2. open listings per company, last 60 days (limit 0 = counts only) curl https://api.crustdata.com/job/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "op": "and", "conditions": [ { "field": "company.basic_info.company_id", "type": "in", "value": [...] }, { "field": "metadata.date_added", "type": "=>", "value": "2026-08-24" } ]}, "limit": 0, "aggregations": [{ "type": "group_by", "field": "company.basic_info.company_id", "agg": "count" }] }' # 3. the same company filter as a weekly watch: POST /watch/company/search
68 Y Combinator companies are in Aviation and Space; 62 are active.
21 companies posted roles in the last 60 days, led by Relativity Space (244 roles), Astranis (103 roles) and Astro Mechanica (45 roles). 29 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Airhart Aeronautics (+71%), Starcloud (+57%) and Orbital Operations (+53%).
Largest latest rounds in the last 12 months, after their YC batch: Stoke Space ($1B), Boom ($300M) and Starcloud ($250M).