Exhibit 5.1

July 26, 2024

SkyWest, Inc.

444 South River Road

St. George, Utah 84790

SkyWest, Inc.

Re: Registration Statement on Form S-8 filed by SkyWest, Inc. (the “Company”) with respect to the SkyWest, Inc. 2019 Long-Term Incentive Plan (the “Plan”)

Ladies and Gentlemen:

We have acted as counsel for SkyWest, Inc., a Utah corporation (the “Company”), in connection with the preparation and filing of the Company’s Registration Statement on Form S-8 (the “Registration Statement”) pursuant to the Securities Act of 1933, as amended (the “Act”), dated on or about the date hereof, relating to the registration of up to an additional 1,298,000 shares of the Company’s common stock, no par value (the “Shares”) that may be issued under the SkyWest, Inc. 2019 Long-Term Incentive Plan (as amended, the “Plan”) pursuant to an amendment to the Plan increasing the number of Shares issuable under the Plan, which amendment was approved by the Company’s Board of Directors at a Board of Directors meeting held on February 6, 2024 and pursuant to written resolutions of the Board of Directors dated July 23, 2024 and by the Company’s shareholders on May 7, 2024.

In reaching the opinions set forth herein, we have examined and are familiar with originals or copies, certified or otherwise identified to our satisfaction, of such documents and records of the Company and such statutes, regulations and other instruments as we deemed necessary or advisable for purposes of this opinion, including (i) the Registration Statement, (ii) certain resolutions adopted by the board of directors of the Company, (iii) the Plan, (iv) the charter documents of the Company and (v) such other certificates, instruments, and documents as we have considered necessary for purposes of this opinion. As to any facts material to our opinions, we have made no independent investigation or verification of such facts and have relied, to the extent that we deem such reliance proper, upon certificates of public officials and officers or other representatives of the Company.

We have assumed (i) the legal capacity of all natural persons, (ii) the genuineness of all signatures, (iii) the authority of all persons signing all documents submitted to us on behalf of the parties to such documents, (iv) the authenticity of all documents submitted to us as originals, (v) the conformity to authentic original documents of all documents submitted to us as copies, (vi) that all information contained in all documents reviewed by us is true, correct and complete, and (vii) that the Shares will be issued in accordance with the terms of the Plan.

Based on the foregoing and subject to the limitations set forth herein, we are of the opinion that when the Shares are issued by the Company and paid for in accordance with the terms of the Plan and the instruments executed pursuant to the Plan, as applicable, the Shares will be validly issued, fully paid and non-assessable.

This opinion is limited in all respects to the (i) the federal laws of the United States and (ii) the Utah Revised Business Corporation Act, as amended (the “URBC”), including all applicable provisions of the Utah Constitution and reported judicial decisions interpreting the URBC, in each case, as such laws exist on the date hereof. We express no opinion as to any other law or any matter other than as expressly set forth above, and no opinion as to any other law or matter may be inferred or implied herefrom. The

opinions expressed herein are rendered as of the date hereof, and we expressly disclaim any obligation to update this letter or advise you of any change in any matter after the date hereof.

We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and the reference to this firm therein. In giving this consent, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Commission.

Very truly yours,

/s/ PARR BROWN GEE & LOVELESS

Parr Brown Gee & Loveless