Two passports, two different names, booked a flight

I have a Colombian passport and I booked a roundtrip to Spain a while ago. This week I became an US citizen and changed my name. So my question is, will I have any trouble coming back to the US since:

My two passports have different name
I booked my flight with the Colombian passport thinking that I was gonna return using my green card (would I be able to update my flight details to reflect the new US passport and name change?)

Thank you for your answers.

EDIT: I do not have the green card anymore as stated by the comments. My concern is that the airline will not let me board coming back to the US because my flight ticket was booked under my Colombian name instead of my US name.

Best Answer

Flights are not booked with a passport - but on a name. They cannot be used by someone else (= having a different name).
On your outbound leg, you will need to use either the passport that has the matching name, or the US passport together with documentation of the name change. The gate agent will probably also ask you about your return leg, as they are required to check that you can enter the US again. Although your US passport ensures that, the names don't match, which again requires documentation of the change.
Either leg, you will need this name-change documentation, or convince the gate agent that having two passports with two different names is perfectly legal and fine (that might be easy or not)

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Can I have two passports with two different names?

Thanks... Answer: There is no guarantee that you would have problems using two passport with different names in them but it is quite likely that you will. Passports should be used which have your current legal name in them.

Can I travel on two different passports?

Can You Have Two Passports from Different Countries? Yes, many countries allow their citizens to hold more than one nationality. This means travelers can potentially hold a passport for each country they are a citizen of. Some people are automatically considered dual citizens from birth.

Can you travel with one passport and come back with another?

You can use whichever passport is more convenient for leaving country A, and whichever passport is more convenient for arriving in country B. They do not have to be the same passport. But you must enter and leave a country on the same passport.

Traveling with two passports - I almost got arrested | Jure Sanguinis Italian Dual Citizenship

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