Travel on I-751 Letter

dhlunar

Registered Users (C)
My wife, the immigrant, is flying to Europe tomorrow. This will be her first time outside of the US since we filled the I-751.

I have two questions regarding traveling on a I-751 letter:

1. The travel documents that she has is her passport, expired GC, and the original I-751 letter. Is there anything else that she needs?

2, Most airlines will allow people to check-in online. If she can check-in online and it ask for her GC expiration date does she put down the date on the GC, or does she put down the date on the GC plus one year?
 
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