On 9/27, I booked the return portion of a trip TPA to LAS with a connection in DEN. That particular flight is no longer showing up when I search for flights TPA->LAS.

Is there any reason for me to be concerned?

Also, since it doesn’t show up, I can’t check for fare decreases

6/2/19
Flight 5176 11:15am TPA to DEN
Flight 5083 2:45pm DEN to LAS