Commitments and Contingencies	12 Months Ended
Dec. 31, 2023
Commitments and Contingencies
Commitments and Contingencies	(5) Commitments and Contingencies Self-Insurance The Company self-insures a portion of its potential losses from claims related to workers’ compensation, environmental issues, property damage, medical insurance for employees and general liability. Losses are accrued based on an estimate of the ultimate aggregate liability for claims incurred, using standard industry practices and the Company’s actual experience. The Company uses judgment and estimates in determining the ultimate aggregate liabilities for claims incurred in its workers’ compensation liability. The Company also used assumptions in determining the workers compensation liability such as an estimation of loss payment and loss reporting development patterns. At December 31, 2023 and 2022, the Company’s accrued workers’ compensation liability totaled $20.6 million and $21.6 million, respectively, of which $7.3 million and $8.0 million, respectively, was short-term and included in other current liabilities. Actual results could differ from these estimates. Legal Matters The Company is subject to certain legal actions which it considers routine to its business activities. As of December 31, 2023, management believed, after consultation with legal counsel, that the ultimate outcome of such legal matters was not likely to have a material adverse effect on the Company’s financial position, liquidity or results of operations. Concentration Risk and Significant Customers The Company requires no collateral from its major airline partners or customers, but monitors the financial condition of its major airline partners. Under the majority of the Company’s code-share agreements, the Company receives weekly payments from its major code-share partners that approximate a significant percentage of the compensation earned for such period. Additionally, the Company provides certain customer service functions at multiple airports for various airlines and the Company maintains a credit loss reserve based upon expected collectability of all accounts receivable. For the years ended December 31, 2023, 2022, and 2021, the Company’s contractual relationships with Delta and United combined accounted for approximately 70.9%, 72.5% and 73.5%, respectively of the Company’s total revenues. Employees Under Collective Bargaining Agreements As of December 31, 2023, the Company had approximately 13,000 employees. Although no SkyWest Airlines employees are represented by a national union, the majority of SkyWest Airline employees are covered by a written, stable and binding collective bargaining agreement under the Railway Labor Act, entered into between SkyWest Airlines and long-established labor associations, such as the SkyWest Airlines Pilot Association (“SAPA”). Aircraft Purchase Commitments As of December 31, 2023, the Company had a purchase commitment to purchase five new E175 aircraft in 2024, eight new E175 aircraft in 2025 and eight new E175 aircraft in 2026. Guarantees In 2022, the Company agreed to guarantee $19.8 million of debt for a 14 CFR Part 135 air carrier. The debt is secured by the Part 135 air carrier’s aircraft and engines and has a five-year term. In exchange for providing the guarantee, the Company received 6.5% of the guaranteed amount as consideration, payable in the estimated value of common stock of the Part 135 air carrier. During the year ended December 31, 2023, the Company sold all of its shares of common stock of the Part 135 air carrier and recorded a gain of $0.5 million in “Other income, net” on the Company’s consolidated statements of comprehensive income. The balance of the debt under the guarantee was $17.6 million as of December 31, 2023. In 2023, the Company agreed to guarantee up to $12.0 million of debt for an aviation school. The debt is secured by the school’s aircraft and engines and has a five-year term. In exchange for providing the guarantee, the Company receives 2.0% annually of the guaranteed amount as consideration in cash. The balance of the debt under the guarantee was $4.8 million as of December 31, 2023. The purpose of these guarantees is to help reduce the financing costs of aircraft for the third-parties in an effort to increase the potential number of commercial pilots in the Company’s hiring pipeline. The Company also recorded the estimated credit loss associated with the guarantees based on publicly available historical default rates issued by a third party for companies with similar credit ratings, factoring the collateral and guarantee term.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2023

(5) Commitments and Contingencies

Self-Insurance

The Company self-insures a portion of its potential losses from claims related to workers’ compensation, environmental issues, property damage, medical insurance for employees and general liability. Losses are accrued based on an estimate of the ultimate aggregate liability for claims incurred, using standard industry practices and the Company’s actual experience. The Company uses judgment and estimates in determining the ultimate aggregate liabilities for claims incurred in its workers’ compensation liability. The Company also used assumptions in determining the workers compensation liability such as an estimation of loss payment and loss reporting development patterns. At December 31, 2023 and 2022, the Company’s accrued workers’ compensation liability totaled $20.6 million and $21.6 million, respectively, of which $7.3 million and $8.0 million, respectively, was short-term and included in other current liabilities. Actual results could differ from these estimates.

Legal Matters

The Company is subject to certain legal actions which it considers routine to its business activities. As of December 31, 2023, management believed, after consultation with legal counsel, that the ultimate outcome of such legal matters was not likely to have a material adverse effect on the Company’s financial position, liquidity or results of operations.

Concentration Risk and Significant Customers

The Company requires no collateral from its major airline partners or customers, but monitors the financial condition of its major airline partners. Under the majority of the Company’s code-share agreements, the Company receives weekly payments from its major code-share partners that approximate a significant percentage of the

compensation earned for such period. Additionally, the Company provides certain customer service functions at multiple airports for various airlines and the Company maintains a credit loss reserve based upon expected collectability of all accounts receivable. For the years ended December 31, 2023, 2022, and 2021, the Company’s contractual relationships with Delta and United combined accounted for approximately 70.9%, 72.5% and 73.5%, respectively of the Company’s total revenues.

Employees Under Collective Bargaining Agreements

As of December 31, 2023, the Company had approximately 13,000 employees. Although no SkyWest Airlines employees are represented by a national union, the majority of SkyWest Airline employees are covered by a written, stable and binding collective bargaining agreement under the Railway Labor Act, entered into between SkyWest Airlines and long-established labor associations, such as the SkyWest Airlines Pilot Association (“SAPA”).

Aircraft Purchase Commitments

As of December 31, 2023, the Company had a purchase commitment to purchase five new E175 aircraft in 2024, eight new E175 aircraft in 2025 and eight new E175 aircraft in 2026.

Guarantees

In 2022, the Company agreed to guarantee $19.8 million of debt for a 14 CFR Part 135 air carrier. The debt is secured by the Part 135 air carrier’s aircraft and engines and has a five-year term. In exchange for providing the guarantee, the Company received 6.5% of the guaranteed amount as consideration, payable in the estimated value of common stock of the Part 135 air carrier. During the year ended December 31, 2023, the Company sold all of its shares of common stock of the Part 135 air carrier and recorded a gain of $0.5 million in “Other income, net” on the Company’s consolidated statements of comprehensive income. The balance of the debt under the guarantee was $17.6 million as of December 31, 2023.

In 2023, the Company agreed to guarantee up to $12.0 million of debt for an aviation school. The debt is secured by the school’s aircraft and engines and has a five-year term. In exchange for providing the guarantee, the Company receives 2.0% annually of the guaranteed amount as consideration in cash. The balance of the debt under the guarantee was $4.8 million as of December 31, 2023.

The purpose of these guarantees is to help reduce the financing costs of aircraft for the third-parties in an effort to increase the potential number of commercial pilots in the Company’s hiring pipeline. The Company also recorded the estimated credit loss associated with the guarantees based on publicly available historical default rates issued by a third party for companies with similar credit ratings, factoring the collateral and guarantee term.