I'm mad at my boyfriend for not picking me up at the airport when I flew over to visit him
Was he supposed to come and pick you up?
If he came to pick me up I might have stayed in Seattle longer together.
I'm sorry that your boyfriend took a long time to pick you up, you should have the right to be mad that he wasted precious time of you two together.
Yeah, I was pretty looking forward to finally spend time with him.
I'm sorry that this happened to you. It is expected that you are reasonable when you get angry with your boyfriend for failing to pick you up. Maybe better communication was needed in sorting out the details.