As outlined in a related question, airlines never bother checking the details you’ve entered during online check-in. They’re essentially junk as they’ll be written over anyway when they scan your passport or ID card at the gate. So feel free to enter whatever you want into the field, just make sure to keep your citizenship correct so that you’re not asked to check-in at the gate (usually an issue with low cost airlines).
And yes, you may certainly travel with an ID card anywhere within the EU. Lots of travelers from countries which issue ID cards don’t even have a passport so restricting passengers to using passports would be quite harmful to the airlines revenue.
Wherever it asks for your “passport number”, just put in your ID card number instead.
“Passport number” is a generic term, which really means “travel document number”. So don’t take it too literally.
So no need to complicate this: again, just put your ID card number in the API system.
Credit:stackoverflow.com‘
5 Mar, 2024
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