Eckford's Rules of North American Air Travel

1. Never connect through ORD. 
• If you must violate this rule, allow at least 4 hours for your connection.
• Add an additional 2 hours if you have to clear customs.
2. If you're flying to a final destination that is less than a three hour drive from a major northeastern hub (e.g. IAD, EWR), forget trying to connect and just drive from the hub. 
• Unless the driving route passes through a notorious traffic area.
3. Never fly codeshare. If an airline offers you a codeshare flight, make the booking directly with the codeshare airline.
• Avoid affiliate airlines (United Express, American Eagle) and fly on the mainline if possible.

I broke all three of these rules on a recent trip. Result: 14-hour overnight delay.