Originally Posted by RobOnLI

I'm in SGN right now and heading to DAD today.

You can't board a flight to Vietnam without proving a visa or you have the visa approval letter printed out. You must pay an agency online to get the visa approval letter. In theory you could board the flight to SGN with the visa approval letter, get here and then go through the "transfers" section to get back on the plane to ICN. However, there's likely to be eyes raised at this. I wouldn't recommend it.

I'm flying to DAD today but also decided to stay in Hoi An instead of Da Nang proper. I hear it's beautiful there.

-RM