----

----

| x      | Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934  |
|--------|------------------------------------------------------------------------------------------|
|   | For the quarterly period ended September 30, 2010                                        |
|   | or                                                                                       |
|  ̈ | Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 |
|   | For the transition period from__________ to__________                                    |

| Delaware(State or other jurisdictionof incorporation or organization)                    | 03-0376558(I.R.S. EmployerIdentification No.) |
|------------------------------------------------------------------------------------------|-----------------------------------------------|
|                                                                                     |                                          |
| 1689 Nonconnah Blvd, Suite 111Memphis, Tennessee(Address of principal executive offices) |   38132(Zip Code)                   |

| Yes  ̈ |   | No x |
|------------|--------|------|

| Yes  ̈ |   | No  ̈ |
|------------|--------|-----------|

| Large accelerated filer  ̈ | Accelerated filer  ̈         |
|--------------------------------|----------------------------------|
|                           |                             |
| Non-accelerated filer x        | Smaller reporting company  ̈ |

| Yes  ̈ |   | No x |
|------------|--------|------|

----

----

| 10.79* | Second Amendment, dated August 20, 2010, to the Credit Agreement by and among Pinnacle Airlines, Inc., Colgan Air, Inc., C.I.T. Leasing Corporation, and CIT Bank, dated as of July 30, 2009 |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.80* | Second Amended and Restated Airline Services Agreement dated July 1, 2010, by and among the Registrant, Pinnacle Airlines, Inc., Mesaba Aviation, Inc., and Delta Air Lines, Inc. |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.81* | First Amendment, dated July 1, 2010, to the Delta Connection Agreement by and among Delta Air Lines, Inc., the Registrant, and Pinnacle Airlines, Inc., dated as of April 27, 2007 |
|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.82* | Delta Connection Agreement among Delta Air Lines, Inc., the Registrant, Pinnacle Airlines, Inc., and Mesaba Aviation, Inc. dated and effective as of July 1, 2010 |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.83* | Saab 340 B+ Delta Connection Agreement among Delta Air Lines, Inc., the Registrant, and Mesaba Aviation, Inc. dated and effective as of July 1, 2010 |
|--------|------------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.84* | Stock Purchase Agreement, dated as of July 1, 2010, by and among Delta Air Lines, Inc., the Registrant, Mesaba Aviation, Inc., and Pinnacle Airlines, Inc. |
|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.85* | Promissory Note, dated as of July 1, 2010, issued by the Registrant, Pinnacle Airlines, Inc., and Mesaba Aviation, Inc. to Delta Air Lines, Inc. |
|--------|--------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.86* | Security and Pledge Agreement, dated as of July 1, 2010, by and among the Registrant, Mesaba Aviation, Inc., and Delta Air Lines, Inc. |
|--------|----------------------------------------------------------------------------------------------------------------------------------------|

| * | Filed herewith |
|---|----------------|

----

|                                  |                                       |
|---------------------------------------|--------------------------------------------|
|                                  | PINNACLE AIRLINES CORP.                    |
|                                  |                                       |
|  By:                             |  /s/ Donald J. Breeding               |
|                                  | Donald J. Breeding                         |
|  Date:  April 25, 2011 | President and Chief Executive Officer      |
|                                  |
|                                  |
|                                  |
|  By:                             |  /s/ Peter D. Hunt                    |
|                                  | Peter D. Hunt                              |
|  Date:  April 25, 2011 | Vice President and Chief Financial Officer |
|                                  |                                       |