Delta Air LinesLIM:DAL 68 Days Inventory is 11.91 as of Mar. 2026, which is 1% above its 10-year median of 11.77. GuruFocus rates LIM:DAL with a GF Score™ of 68/100 and a GF Value™ of $54.77 (Significantly Overvalued). The stock has 10 warning signs investors should review. Among 796 Transportation companies, Delta Air Lines ranks better than 51.38% on this metric.
The historical rank and industry rank for Delta Air Lines's Days Inventory or its related term are showing as below:
LIM:DAL'
s Days Inventory Range Over the Past 10 Years
Min: 10.67 Med: 11.77 Max: 16.86
Current: 11.61
During the past 13 years, Delta Air Lines's highest Days Inventory was 16.86. The lowest was 10.67. And the median was 11.77.
LIM:DAL's Days Inventory is ranked better than 51.38% of 796
companies
in the Transportation industry
Industry Median: 12.455
vs LIM:DAL: 11.61
Delta Air Lines's Days Inventory
declined
from Mar. 2025 (11.97) to Mar. 2026 (11.91).
Inventory Turnover measures how fast the company turns over its inventory within a year.
Delta Air Lines's Inventory Turnover for the
three
months ended in Mar. 2026 was 7.66.
Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Delta Air Lines's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.11.
Delta Air Lines (LIM:DAL) Days Inventory Explanation
Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:
1. Inventory Turnover measures how fast the company turns over its inventory within a year.
Delta Air Lines's Inventory Turnover for the
three
months ended in Mar. 2026 is calculated as
2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Delta Air Lines's Inventory to Revenue for the
three
months ended in Mar. 2026 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Be Aware
A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.
Delta Air Lines Days Inventory Related Terms
Delta Air Lines Days Inventory Historical Data
* Premium members only.
The historical data trend for Delta Air Lines's Days Inventory can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
LIM:DAL vs UAL, LUV, AAL: Days Inventory Comparison
For the Airlines subindustry, Delta Air Lines's Days Inventory, along with its competitors' market caps and Days Inventory data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Delta Air Lines Days Inventory vs Transportation Industry
For the Transportation industry and Industrials sector, Delta Air Lines's Days Inventory distribution charts can be found below:
* The bar in red indicates where Delta Air Lines's Days Inventory falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Delta Air Lines (LIM:DAL) has a Days Inventory of 11.91 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Delta Air Lines and its competitors. This is near median its historical median of 11.77. Over the past decade, Delta Air Lines' Days Inventory has ranged from 10.67 to 16.86. According to the industry distribution chart, Delta Air Lines ranks #387 out of 796 companies in the Transportation industry, placing it in the top 48.6%.
Is Delta Air Lines' Days Inventory too high?
Delta Air Lines' current Days Inventory of 11.91 is near median its 10-year median of 11.77. Over the past 10 years, this metric has ranged from a low of 10.67 to a high of 16.86. The Transportation industry median Days Inventory is 12.46. Delta Air Lines' value of 11.91 is 4.4% below this industry median. Based on the distribution chart, Delta Air Lines ranks #387 out of 796 companies in the Transportation industry, which is above the industry midpoint. Overall, Delta Air Lines has a GF Score™ of 68/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Delta Air Lines' Days Inventory compare to UAL and LUV?
According to the Transportation industry distribution chart, Delta Air Lines ranks #387 out of 796 companies for Days Inventory. This puts Delta Air Lines in the upper half of its industry. The industry median Days Inventory is 12.46. Delta Air Lines' value of 11.91 is 4.4% below this benchmark. Historically, Delta Air Lines' own Days Inventory has ranged from 10.67 to 16.86 over the past decade. While the company's 10-year median is 11.77 vs. the industry median of 12.46, Delta Air Lines has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Days Inventory for a Transportation company?
The median Days Inventory among Transportation companies is 12.46, based on 796 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Delta Air Lines's current Days Inventory of 11.91 is 4.4% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Delta Air Lines and its competitors. For the Transportation industry, the median Days Inventory is 12.46 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Delta Air Lines's current Days Inventory is 11.91, which is near median its own 10-year median of 11.77. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Delta Air Lines stock overvalued right now?
Based on GuruFocus' analysis, Delta Air Lines (LIM:DAL) is currently considered Significantly Overvalued. The stock's GF Value™ is $54.77, compared to a current price of $93.70 — trading 71.1% above its estimated fair value. The current Days Inventory is 11.91, which is near median its 10-year median of 11.77 and 4.4% below the Transportation industry median of 12.46. Delta Air Lines' overall GF Score™ is 68/100 with 10 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For Delta Air Lines (LIM:DAL), the current Days Inventory is 11.91 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Delta Air Lines (LIM:DAL) Overvalued in 2026?
Based on GuruFocus' analysis, Delta Air Lines stock appears to be overvalued.
The current stock price of $93.70 is trading 71.1% above its estimated GF Value™ of $54.77.
GuruFocus considers Delta Air Lines to be Significantly Overvalued.
Key valuation signals for LIM:DAL:
Days Inventory: 11.91 (near median its 10-year median of 11.77)
GF Value™: $54.77 vs. price of $93.70 (71.1% above fair value)
Industry Position: 4.4% below the Transportation median (#387 of 796)
No single metric tells the full story. See the LIM:DAL stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Atlanta-based Delta Air Lines is one of the world's largest airlines, with a network of over 300 destinations in more than 50 countries. Delta operates a hub-and-spoke network, where it gathers and distributes passengers across the globe through its biggest hubs in Atlanta, New York, Salt Lake City, Detroit, Seattle, and Minneapolis-St. Paul. Delta has historically earned most of its international revenue and profits from flying passengers over the Atlantic Ocean.
68GF Score
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