United will potentially buy up to 100 small electric planes in new soft order
United Airlines and regional carrier Mesa Airlines said on Tuesday that each will buy up to 100 electric aircraft from Swedish startup Heart Aerospace.
The agreement — which is not a firm order — came as part of an investment by United's venture capital subsidiary, United Airlines Ventures (UAV), in the Swedish planemaker. Breakthrough Energy Ventures, the alternative energy-focused VC fund founded by Bill Gates, also invested in Heart as part of the deal announced Tuesday.
Whether the orders for Heart's 19-seat ES-19 aircraft are ever actually delivered is far from certain. United said that the aircraft must "meet United's safety, business and operating requirements" before any sale is finalized, and added that Mesa had implemented similar terms.
The ES-19 has a potential range of 250 miles, which, along with the small size, limits the potential ways that a larger airline or regional carrier like Mesa could use the planes. Mesa operates flights for United and American Airlines under the United Express and American Eagle brands, respectively.
Heart is targeting an ambitious 2026 debut for the plane, although it is not clear whether that target can be reached given stringent certification requirements for the new aircraft type.
"We recognize that customers want even more ownership of their own carbon emissions footprint" Michael Leskinen, a vice president at United who heads the UAV subsidiary, said in a press release. "We're proud to partner with Mesa Air Group to bring electric aircraft to our customers earlier than any other US airliner."
More: United Airlines announces deal with Boom Supersonic for faster-than-sound commercial flights
The deal was the latest of several similar announcements from United, which has made several high-profile investments in aviation startups, mostly skewing towards companies investing in alternative forms of fuel. In February, the airline announced a partnership with eVTOL startup Archer Aviation — the company unveiled its flying taxi design last month — and in June, United said it had invested in Boom Supersonic, which aims to design a cost-effective supersonic passenger jet that uses so-called sustainable aviation fuels (SAFs).
Rival airlines American and Virgin Atlantic have also announced investments in eVTOL startups, though it's unclear exactly what timeline might prove realistic for bringing such products to market.
TPG featured card
at American Express's secure site
Terms & restrictions apply. See rates & fees.
| 3X | Earn 3X Miles on Delta purchases. |
| 1X | Earn 1X Miles on all other eligible purchases. |
Pros
- Delta SkyClub access when flying Delta
- Annual companion ticket for travel on Delta (upon renewal)
- Ability to earn MQDs through spending
- Various statement credits for eligible purchases
Cons
- Steep annual fee of $650
- Other Delta cobranded cards offer superior earning categories
- Earn 100,000 Bonus Miles after you spend $6,000 or more in purchases with your new Card within the first 6 months of Card Membership and an additional 25,000 bonus miles after you make an additional $3,000 in purchases on the Card within your first 6 months, starting from the date that your account is opened. Offer Ends 04/01/2026.
- Delta SkyMiles® Reserve American Express Card Members receive 15 Visits per Medallion® Year to the Delta Sky Club® when flying Delta and can unlock an unlimited number of Visits after spending $75,000 in purchases on your Card in a calendar year. Plus, you’ll receive four One-Time Guest Passes each Medallion Year so you can share the experience with family and friends when traveling Delta together.
- Enjoy complimentary access to The Centurion® Lounge in the U.S. and select international locations (as set forth on the Centurion Lounge Website), Sidecar by The Centurion® Lounge in the U.S. (see the Centurion Lounge Website for more information on Sidecar by The Centurion® Lounge availability), and Escape Lounges when flying on a Delta flight booked with the Delta SkyMiles® Reserve American Express Card. § To access Sidecar by The Centurion® Lounge, Card Members must arrive within 90 minutes of their departing flight (including layovers). To access The Centurion® Lounge, Card Members must arrive within 3 hours of their departing flight. Effective July 8, 2026, during a layover, Card Members must arrive within 5 hours of the connecting flight.
- Receive $2,500 Medallion® Qualification Dollars with MQD Headstart each Medallion Qualification Year and earn $1 MQD for each $10 in purchases on your Delta SkyMiles® Reserve American Express Card with MQD Boost to get closer to Status next Medallion Year.
- Enjoy a Companion Certificate on a Delta First, Delta Comfort, or Delta Main round-trip flight to select destinations each year after renewal of your Card. The Companion Certificate requires payment of government-imposed taxes and fees of between $22 and $250 (for itineraries with up to four flight segments). Baggage charges and other restrictions apply. Delta Basic experiences are not eligible for this benefit.
- $240 Resy Credit: When you use your Delta SkyMiles® Reserve American Express Card for eligible purchases with U.S. Resy restaurants, you can earn up to $20 each month in statement credits. Enrollment required.
- $120 Rideshare Credit: Earn up to $10 back in statement credits each month after you use your Delta SkyMiles® Reserve American Express Card to pay for U.S. rideshare purchases with select providers. Enrollment required.
- Delta SkyMiles® Reserve American Express Card Members get 15% off when using miles to book Award Travel on Delta flights through delta.com and the Fly Delta app. Discount not applicable to partner-operated flights or to taxes and fees.
- With your Delta SkyMiles® Reserve American Express Card, receive upgrade priority over others with the same Medallion tier, product and fare experience purchased, and Million Miler milestone when you fly with Delta.
- Earn 3X Miles on Delta purchases and earn 1X Miles on all other eligible purchases.
- No Foreign Transaction Fees. Enjoy international travel without additional fees on purchases made abroad.
- $650 Annual Fee.
- Apply with confidence. Know if you're approved for a Card with no impact to your credit score. If you're approved and you choose to accept this Card, your credit score may be impacted.
- Terms Apply.
- See Rates & Fees


