Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
SIMMONS ROBERT J
  2. Issuer Name and Ticker or Trading Symbol
SKYWEST INC [SKYW]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Financial Officer
(Last)
(First)
(Middle)
444 S RIVER ROAD
3. Date of Earliest Transaction (Month/Day/Year)
03/06/2018
(Street)

ST. GEORGE, UT 84790
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 03/06/2018   M   24,233 A $ 14.12 91,704 (1) D  
Common Stock 03/06/2018   M   15,106 A $ 14.78 106,810 (1) D  
Common Stock 03/06/2018   S   39,339 D $ 55.9362 (2) 67,471 (1) D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (Right to Buy) $ 14.12 03/06/2018   M     24,233 02/17/2016(3) 04/02/2022 Common Stock 24,233 $ 0 0 D  
Stock Option (Right to Buy) $ 14.78 03/06/2018   M     15,106 02/10/2017(4) 02/10/2023 Common Stock 15,106 $ 0 7,783 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SIMMONS ROBERT J
444 S RIVER ROAD
ST. GEORGE, UT 84790
      Chief Financial Officer  

Signatures

 Robert J. Simmons   03/08/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Includes 42,894 restricted stock units, of which 27,793 vest approximately three years from the date of grant and 15,101 vest upon achievement of performance measurements approximately three years from the date of grant. Each restricted stock unit represents a contingent right to receive one share of common stock.
(2) Represents the weighted average sale price for the entire number of shares sold. The actual sale prices range from $55.80 to $56.15. Detailed information on the exact number of shares sold at each price can be obtained from the issuer upon request.
(3) Stock Options become exercisable in equal annual installments of 33.33% starting on February 17, 2016.
(4) Stock Options become exercisable in equal annual installments of 33.33% starting on February 10, 2017.

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