Acceptable forms of ID

[ColoAvs19]

Exactly. The carrier is responsible to verify you have any required documents for entry into any country they fly you to. Passport, visa, etc. The airline is responsible and they get the fine if they fly anybody that doesn't have their required documents. Of course in addition to that, an airline can request whatever they want to at check in. As for going to the gate, even if it's an Intl flight, the nice folks checking your ID should not be looking for any of that.........strictly satisfying the requirement of a government issued photo ID........

[sfgiants13]

I've never tried to show my ID anywhere outside of an airport. I've used it a bunch with no problems except once at a small airport where the TSA agent said my airline ID wasn't valid because it had no expiration date on it. I then tried my airport badge with an expiration because I was curious and she still said no she needs a drivers license. That's the only problem I've ever had.

Straight from the TSA website: Acceptable IDs | Transportation Security Administration

Both airline and airport ID badges are acceptable

[ColoAvs19]

I've never tried to show my ID anywhere outside of an airport. I've used it a bunch with no problems except once at a small airport where the TSA agent said my airline ID wasn't valid because it had no expiration date on it. I then tried my airport badge with an expiration because I was curious and she still said no she needs a drivers license. That's the only problem I've ever had.

Straight from the TSA website: Acceptable IDs | Transportation Security Administration

Both airline and airport ID badges are acceptable

I've had plenty of issues with the fine TSA folks in your corner of the country at SeaTac. Some agents are under the impression that there are local variations to the federal rules. Gotta love it.

Only agency worse than that to work with consistently in many locations is USCBP! My pals!!