Layover luggage in Washington IAD

Hi, I have a flight from San Diego to Newark with a layover at Washington IAD (Dulles). In Washington, do I need to collect my luggage or will it be transferred automatically?

Hey, Do you have a single ticket for San Diego / Newark (so with the same airline) or two separate tickets (San Diego / Washington - Washington/Newark)? Because in the first case, your baggage will be checked through, but not in the second.

Hi, Do you have a single ticket San Diego / Newark (so with one airline) or two separate tickets (San Diego / Washington - Washington/Newark)? Because in the first case, your luggage will be checked through, but not in the second.

It’s been a while since I’ve had a connection in the US without arriving from a Canadian airport with pre-clearance, but I think you’ll need to do what we used to do here: collect your luggage, go through customs, re-check your luggage, go through security again, and walk to your gate... See here: https://www.flydulles.com/Customs

You only pick up your luggage when heading to the United States, not the other way around

You only collect your luggage when traveling *to* the United States, not the other way around

Yeah, I totally misread the question.