Tuesday Morning Corp (TUES): PAR Capital Hikes Stake to 5.1%

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No.     )*

Tuesday
Morning Corp

(Name of Issuer)

Common stock, par value $0.001

(Title of Class of Securities)

899035505

(CUSIP Number)

Sept 14, 2016

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to
designate the rule pursuant to which this Schedule is filed:

¨ Rule 13d-1(b)

x Rule 13d-1(c)

¨ Rule 13d-1(d)

The information required in the remainder of this cover page shall not be
deemed to be filed for the purpose of Section 18 of the Securities Exchange Act of 1934 (Act) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).

Item 1(a) Name of issuer.

Tuesday Morning Corp

Item 1(b) Address of issuers
principal executive offices.

6250 LBJ Freeway

Dallas,
Texas 75240

Item 2(a) Name of person filing.

PAR Investment Partners, L.P.

PAR Group, L.P.

PAR Capital Management, Inc.

Item 2(b) Address or
principal business office or, if none, residence.

PAR Capital Management, Inc.

One International Place, Suite 2041

Boston, MA 02110

Item 2(c) Citizenship.

State of Delaware

Item 2(d) Title of class of securities.

Common stock, par value $0.001

Item 2(e) CUSIP No.

899035505

Item 3. If this statement is filed
pursuant to §§240.13d1(b) or 240.13d2(b) or (c), check whether the person filing is a:

Not applicable

Item 4. Ownership.

Provide the following
information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a) Amount Beneficially
Owned:

Each reporting person: 2,263,000

(b)
Percent of Class:

Each reporting person: 5.1%

(c) (1) Number of shares as to which PAR Investment Partners, L.P. has:

(i) sole power to vote or to direct the vote 2,263,000

(ii)
shared power to vote or to direct the vote 0

(iii) sole power to dispose or to direct the disposition of 2,263,000

(iv) shared power to dispose or to direct the disposition of 0

(2) Number of shares as to which PAR Group, L.P. has:

(i) sole
power to vote or to direct the vote 2,263,000

(ii) shared power to vote or to direct the vote 0

(iii) sole power to dispose or to direct the disposition of 2,263,000

(iv) shared power to dispose or to direct the disposition of 0

(3) Number of shares as to which PAR Capital Management, Inc. has:

(i) sole power to vote or to direct the vote 2,263,000

(ii)
shared power to vote or to direct the vote 0

(iii) sole power to dispose or to direct the disposition of 2,263,000

(iv) shared power to dispose or to direct the disposition of 0

Item 5. Ownership of 5 Percent or Less of a Class.

Not applicable

Item 6. Ownership of More than 5 Percent
on Behalf of Another Person.

Not applicable

Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control
Person.

The sole general partner of PAR Investment Partners, L.P. is PAR Group, L.P. The sole general partner of PAR Group L.P., is PAR Capital
Management, Inc. Each of PAR Group, L.P. and PAR Capital Management, Inc. may be deemed to be the beneficial owner of all shares held directly by PAR Investment Partners, L.P.

Item 8. Identification and Classification of Members of the Group.

Not applicable

Item 9. Notice of Dissolution of Group.

Not applicable

Exhibits.

Joint filing agreement dated September 23, 2016.

Item 10. Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the
ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a
participant in any transaction having that purpose or effect.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true,
complete and correct.