Hello, I didn't see your specific flight and how to issue tickets, so I don't know the specific information. I can only tell you what I saw.

First, the flight delay of MU571.

I'm not sure whether your ticket is opened on China Eastern Airlines or Delta, and how to open the ticket for the follow-up trip. If it is opened separately, Delta will not be responsible for the delay of China Eastern Airlines. If it is opened together, Delta will automatically transfer you to the next flight.

Secondly, the baggage problem.

all the first stops to enter the United States need to check the luggage again. This has been the case since 911, but recently it has been said that it has become a spot check. You must be prepared, and the transfer time is better to be longer.

Third, the problem of baggage payment.

China Eastern Airlines checks 2 pieces of luggage for free. This is no problem. If you open the baggage together with China Eastern Airlines, it is free. However, if you open it separately, you need to pay the baggage fee at the Delta Air Lines counter when you check in. The price of luggage you inquired about in the United States is correct. Generally, luggage is not included in the domestic section of the United States, unless it is opened with the international section, there may be free luggage.

Fourthly, your flight of China Eastern Airlines does not have unlimited network coverage. Recently, it seems that Air China wants to get it, but it has entertainment system and charging.

I specialize in international air tickets and hope I can help you adopt it.