Extracting flight data from old PDF boarding passes?

Borderly is excellent for this. You can upload multiple PDFs at once and it extracts all the flight details automatically.

I imported 3 years of travel in about 10 minutes using Borderly's PDF uploader. The accuracy is impressive.

It even picks up seat numbers and gate info if they're on the pass. Great for building a complete history.

Once imported, you get all the cool stats like total distance and airlines flown instantly.