United’s Next Decision: What to Do With All Those Boeing 737 Max 10 Seats It Ordered Years Ago
## Introduction: The Lie-Flat Seats That Have Nowhere to Go
In August 2018, Scott Kirby—then United Airlines' president, now its CEO—stood before a room of reporters at an aviation conference in Denver and laid out a bold vision. United would equip its new Boeing 737 Max 10 aircraft with lie‑flat premium seats, transforming the narrow‑body jets into profit machines for lucrative transcontinental routes.
The plane was supposed to start flying in 2020.
Today, in August 2026, those seats are sitting in storage—hundreds of them, gathering dust, because the planes they were built for still haven't been certified. Boeing's largest 737 Max variant is now expected to enter service in summer 2027. And United, which has 167 of the aircraft on firm order, faces an awkward, expensive question: what do you do with a bunch of lie‑flat seats that don't fit on any other airplane?
"We got a bunch of lie-flat seats that we don't know what to do with," Kirby told CNBC earlier this month. "They don't fit on other airplanes".
It's a predicament that perfectly captures the chaos of the post‑Max‑crisis era—and a decision that will shape United's premium strategy for years to come.
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## The 2018 Bet: A Transcontinental Game-Changer
Back in 2018, the 737 Max 10 was supposed to be Boeing's answer to the Airbus A321neo. It was the largest variant in the best‑selling 737 family, promising the range and capacity to challenge Airbus on the most lucrative narrow‑body routes.
United saw an opportunity. The airline planned to deploy the Max 10 on transcontinental flights—New York to Los Angeles, San Francisco to Boston—routes where business travelers pay a premium for comfort and productivity. Lie‑flat seats in a narrow‑body jet were a rarity at the time. United's bet was that it could capture a slice of the premium market traditionally dominated by wide‑body aircraft.
The plan was ambitious. It was also forward‑looking. United ordered those lie‑flat seats in August 2018, well before the Max 10 had even completed its first flight. The seats were custom‑designed for the Max 10's cabin. They were supposed to arrive alongside the planes in 2020.
Then everything fell apart.
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## The Delay: Six Years and Counting
The 737 Max 10's certification has been a saga of delays, redesigns, and regulatory scrutiny. The root cause traces back to the two fatal crashes of 737 Max 8 aircraft in 2018 and 2019, which grounded the entire Max fleet worldwide.
When the Max returned to service, Boeing faced a much tougher regulatory environment. The FAA demanded more rigorous certification processes, including for the Max 7 and Max 10 variants that had yet to be approved. Then came an anti‑icing system redesign that further pushed back the timeline.
By 2024, the delays were measured in years, not months. United had removed the Max 10 from its fleet plans—at least temporarily. By 2026, Boeing had finally completed certification testing for the smallest and largest 737 Max variants. The FAA approved the Max 7 in early August. The Max 10 is expected to follow, with entry into service now targeted for 2027.
But that's six years later than originally planned. And in those six years, a lot changed.
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## The Storage Problem: Seats That Don't Fit
United's lie‑flat seats were designed specifically for the Max 10's cabin dimensions. They can't be installed on Airbus A321neos, or on smaller 737s, or on any other aircraft in United's fleet.
The airline hasn't disclosed exactly how many seats are in storage, but it's safe to assume the number runs into the hundreds—potentially thousands. United ordered enough lie‑flat seats to equip a significant portion of its 167‑plane Max 10 fleet. Those seats are custom hardware, not off‑the‑shelf components. They represent a substantial capital investment that has generated exactly zero revenue.
Kirby put it bluntly: "They don't fit on other airplanes".
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## The Workaround: The A321neo "Coastliner"
While Boeing's delays stretched on, United didn't stand still. The airline pivoted to Airbus, leasing and ordering A321neos as a stopgap.
In 2024, United signed letters of intent for 35 leased A321neos. It later secured another 40 leased aircraft. By 2026, United had taken delivery of 67 A321neos, with more on the way.
But United didn't just use the A321neo as a capacity filler. It used it as a **premium platform**—exactly what the Max 10 was supposed to be.
In early 2026, United outfitted a subfleet of A321neos with 20 newly designed Polaris suites, premium economy options, and other upgraded seating. The airline dubbed this subfleet the **"Coastliner"** and deployed it on transcontinental routes.
The Coastliner is, in effect, the Max 10's replacement—at least for now. It delivers the premium experience United had envisioned for the Boeing jet, but on an Airbus platform that was actually available.
This pivot has created an awkward dynamic. United now has a premium narrow‑body product flying on A321neos. When the Max 10 finally arrives, the airline will have to decide whether to replicate the Coastliner's premium configuration—or do something different.
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## The Decision: What to Do With the Max 10
United hasn't disclosed what layout it will use on the Max 10, or where it will fly the planes. But the options are narrowing.
### Option 1: Proceed With the Original Lie‑Flat Plan
United could install the stored lie‑flat seats on the Max 10 as originally intended. This would create a second premium narrow‑body subfleet, complementing the Coastliner A321neos.
**Pros:** The seats are already paid for. The Max 10 offers similar capacity to the A321neo, so the premium product would be competitive. United could deploy both types on transcontinental routes, increasing flexibility.
**Cons:** The market has changed. United now offers a premium economy section, which it didn't have when it first ordered the Max 10. The cabin configuration would need to accommodate premium economy, basic economy, and lie‑flat seats—a complex puzzle. And maintaining two different premium narrow‑body products (one on Airbus, one on Boeing) adds operational complexity.
### Option 2: Abandon the Lie‑Flat Seats
United could scrap the lie‑flat plan entirely and configure the Max 10 with a more conventional cabin—perhaps a domestic first class seat similar to what it uses on other 737s.
**Pros:** Simpler configuration. Lower cost. The seats could potentially be sold or repurposed.
**Cons:** United would be wasting a significant capital investment. The Max 10 would be less differentiated from other 737s. And United would lose the opportunity to capture premium transcontinental revenue on the Boeing platform.
### Option 3: Hybrid Approach
United could install the lie‑flat seats on a portion of the Max 10 fleet—perhaps for specific routes—while using a more conventional configuration on the rest.
**Pros:** Flexibility. United could test the market before committing fully.
**Cons:** Subfleet complexity. Different configurations require different crew training, maintenance procedures, and scheduling constraints.
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## The Retirement Wave: Making Room for the New
United's decision about the Max 10's interiors is inseparable from its broader fleet strategy. The airline is planning to retire **80 older, less fuel‑efficient aircraft in 2027**—a "step up" from previous years, according to CFO Mike Leskinen.
The retirements are part of United's "barbell approach": newer, fuel‑efficient aircraft serve high‑demand, profitable routes, while older aircraft are "sat down" and only used when necessary during peak times.
"As new aircraft enter the fleet, they will bolster United's 'barbell approach'," FlightGlobal reported. The Max 10, with its superior fuel efficiency and premium seating potential, is expected to operate United's most important routes.
"We want to be very clear that the Max 10 will be superior in every way," chief commercial officer Andrew Nocella said.
The retirement wave will also help United accelerate its cabin refresh program. The airline is retrofitting its fleet with Starlink satellite Wi‑Fi, upgraded seatback entertainment screens, and larger overhead bins.
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## The Competitive Landscape: Why This Decision Matters
United isn't making this decision in a vacuum. The airline industry is in the middle of a **premium seating arms race**.
Airlines are scrambling to add high‑yield premium seats as business travel recovers and passengers show a willingness to pay for comfort. Delta, American, and United are all competing fiercely for premium travelers.
United's Coastliner A321neos already give it a premium narrow‑body product. Delta has its own premium A321neo configurations. American is upgrading its fleet.
The Max 10's arrival gives United another opportunity to differentiate itself. If United can offer lie‑flat seats on the Max 10—a feature that remains rare on narrow‑body jets—it could capture a significant share of the premium transcontinental market.
But if United dilutes the product, or delays the decision too long, it risks falling behind.
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## What This Means for Passengers
For travelers, United's decision will determine what kind of experience they can expect on the Max 10. If United installs the lie‑flat seats, the Max 10 could become the most premium narrow‑body aircraft in the U.S. fleet—offering a level of comfort normally reserved for wide‑body international flights.
If United abandons the lie‑flat plan, the Max 10 will be just another 737—efficient, but unremarkable.
Either way, United's decision will shape the competitive dynamics of transcontinental routes for years to come. And it will determine whether those hundreds of seats in storage ever see the inside of an airplane.
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## Frequently Asked Questions (FAQs)
### 1. How many Boeing 737 Max 10s has United ordered?
United has **167** Boeing 737 Max 10s on firm order, according to its most recent quarterly filing.
### 2. When was the 737 Max 10 originally supposed to enter service?
The Max 10 was originally expected to enter service in **2020**.
### 3. When is the 737 Max 10 now expected to enter service?
United now expects to take delivery of its first Max 10 in **summer 2027**.
### 4. Why has the Max 10 been delayed for so long?
The delays stem from Boeing's need to redesign an anti-icing system, combined with increased regulatory scrutiny following the 737 Max 8 crashes and years of safety and manufacturing crises.
### 5. What are the "lie-flat seats" that United has in storage?
United ordered hundreds of lie‑flat premium seats in 2018, intended for the Max 10's transcontinental routes. The seats have been in storage because the Max 10's certification was delayed.
### 6. Why can't United use those seats on other aircraft?
The lie‑flat seats were custom‑designed for the Max 10's cabin dimensions and **do not fit on other aircraft** in United's fleet.
### 7. What is the "Coastliner" subfleet?
The Coastliner is a subfleet of Airbus A321neo aircraft that United outfitted with premium seating—including 20 Polaris suites and premium economy options—as a replacement for the delayed Max 10.
### 8. What will United do with the Max 10 when it finally arrives?
United hasn't disclosed its final plan. The airline could install the stored lie‑flat seats, abandon the lie‑flat plan entirely, or pursue a hybrid approach. CEO Scott Kirby has said the airline is still deciding.
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## Conclusion: A Decision Years in the Making
Scott Kirby's confession—"We got a bunch of lie-flat seats that we don't know what to do with"—is more than just an admission of logistical awkwardness. It's a reflection of how profoundly the aviation industry has been disrupted over the past six years.
The Max 10 was supposed to be United's transcontinental game‑changer. Instead, it became a symbol of Boeing's struggles and the cascading consequences of the Max crisis. United adapted, pivoting to Airbus and building the Coastliner—a premium narrow‑body product that's already flying.
Now, with the Max 10 finally on the horizon, United faces a choice: stick with the original vision, scrap it, or find a middle ground.
The decision will shape United's premium strategy for the next decade. It will determine whether those hundreds of seats ever leave storage. And it will signal to the industry whether United still believes in the Max 10—or whether the Coastliner has already made it obsolete.
Either way, the answer is long overdue. The seats have been waiting six years. The passengers are waiting too.
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## Disclaimer
*This article is for informational and educational purposes only and does not constitute financial, investment, tax, or legal advice. All views expressed are based on publicly available information as of August 23, 2026. Aircraft orders, delivery schedules, and airline strategies are subject to change. The author does not endorse any specific investment strategies or products. Past performance is not indicative of future results. Before making any financial or investment decisions based on the content of this article, please consult with qualified professionals who can evaluate your specific situation. The author is not affiliated with United Airlines, The Boeing Company, or any other entity mentioned in this article.*
