Yes, you can generally retrieve your boarding pass online after your travel has concluded, but it is much easier if you do so within 7 to 30 days of your flight. Most airlines allow you to log in to your account or use the "Manage Booking" feature on their website to download a PDF version or view a digital copy for expense claims and loyalty point verification. However, after a certain period (which varies by airline), the booking is "archived" and disappears from the public-facing portal. If the online option is no longer available, you may need to contact the airline's Customer Service or "Records" department to request a "Proof of Travel" certificate or a duplicate pass, which sometimes carries a small administrative fee. A "pro-tip" for 2026 is to always take a screenshot or save the pass to your digital wallet immediately upon check-in, as having that record can save you significant administrative headaches if you later need to prove your presence on a specific flight for insurance or tax purposes.