JefferyT...fog is not uniform...like any weather problem. Flights won't be "equally" screwed up. AS/QX are based in SEA...Delta is not. A friend of mine flew in and out of SEA and PDX on Alaska (Horizon going back) during very foggy days, and he departed on-time and arrived 10 minutes early in both cases. AS pioneered HUDs and other fog fighting technology on their aircraft.
What is unfortunate is that SEA is built right in a valley, and is prime fog "collection" area.
[This message has been edited by West Coast Flyer (edited 12-31-1999).]