Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors

PASSUR Aerospace, Inc. and Subsidiary

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-217672, 333-208590, 333-172472 and 333-161791, 333-156657) of PASSUR Aerospace, Inc. and Subsidiary of our report dated February 12, 2018, relating to the consolidated financial statements which appears in this Form 10-K.

/s/ BDO USA, LLP

New York, New York

February 12, 2018