SEA-BWI. Departs at 10:40pm, arrives at 6:48am. 5h8m in the air.
OAK-BWI. Departs at 4:45pm, arrives at 1:00am. 5h15m in the air.
SAN-BWI. Departs at 8:59pm, arrives at 5:00am. 5h1m in the air.
My body dislikes 3-4 hour redeyes much more than the 5 hour variety.