here's my flight info.  had to get a more expensive flight ($340 i think) with the monday flight out.

Thu, May 17   	2436  Calgary 3:00 pm     	Seattle/Tacoma 3:30 pm 0   	F28 Coach 
    		2378  Seattle/Tacoma 5:00 pm     Portland 5:50 pm 0   		DH4 Coach 

 
Mon, May 21   	2406  Portland 1:30 pm     	Seattle/Tacoma 2:15 pm 0   	F28 Coach 
    		2439  Seattle/Tacoma 2:57 pm     Calgary 5:20 pm 0   		F28 Coach