QR Codes for Boarding Passes and Travel Itineraries: How They Actually Work
A boarding pass QR code (technically often a 2D barcode using the IATA Bar Coded Boarding Pass standard, which is closely related to but not always identical to a standard QR code) encodes your flight, seat, and ticketing details in a structured format that airport scanners read to verify your booking — it's generated by the airline's own system, not something a general QR generator produces. Separately, travelers can use ordinary QR codes for their own trip planning, like sharing an itinerary or linking to hotel check-in details.
What's actually encoded in an airline boarding pass code
Boarding pass codes follow an industry standard (IATA Resolution 792) that packs in your name, flight number, seat assignment, ticket and booking reference, and sometimes frequent flyer information — all in a compact structured format airport and airline systems can read instantly at security and the gate. This is fundamentally different from a typical QR code linking to a webpage; it's closer in spirit to how a QR code login works, in that the value comes from a backend system validating the encoded data against a live booking record, not from the pattern itself carrying meaning independently.
Can you make your own version of this?
Not the airline-verified version — that requires integration with the airline's own reservation and check-in systems, which a general QR generator has no access to. What you can do with a standard QR code generator is build travel-related codes that support your own trip, distinct from the actual boarding pass:
| What travelers commonly QR-code themselves | What it links to |
|---|---|
| A shared trip itinerary | A document or app (TripIt, a shared Google Doc) with flight times, hotel info, and activity plans |
| Hotel or rental check-in instructions | A page with door codes, Wi-Fi details, and house rules for a vacation rental |
| A packing list or trip checklist | A shared note or checklist app |
| Emergency contact / travel insurance info | A page with policy numbers and emergency contact details, useful for a travel companion or family member back home |
A note on losing or damaging a physical boarding pass
Since the boarding pass code itself is issued by the airline, losing a printed copy isn't the same problem a lost personal QR code would be — most airlines let you re-access your boarding pass through their app or website using your booking reference, regenerating a fresh code rather than needing the original paper. The mobile wallet version (Apple Wallet or Google Wallet) sidesteps this issue entirely by keeping the pass on your phone rather than relying on a paper printout.
Quick answers
Can I generate my own boarding pass QR code using a tool like QRSen? No — a boarding pass code requires the airline's backend to issue and validate it against your actual booking; a general-purpose QR generator can't replicate that live verification.
Is a boarding pass code the same technology as a regular QR code? It's closely related — many airlines use a genuine QR code format, though some still use a different 2D barcode standard (PDF417 is common) under the same IATA specification. Visually, both can look similar to a general QR code but follow the airline-specific data structure.
What's a practical use of a personal QR code for a trip I'm planning? Sharing a link to a group itinerary document, a shared photo album for the trip, or house/check-in details for a vacation rental — anything you control and want easy for travel companions to access via a quick scan rather than a forwarded link.
Does scanning someone else's boarding pass reveal their personal information? Yes, to a meaningful degree — boarding pass codes can contain a name, booking reference, and frequent flyer number, which is why security experts generally advise not posting photos of boarding passes publicly or discarding them without shredding.