For Delta Airlines: Delta Airlines allows 2 check-in bags, baggage must be weigh 50 lbs, (23 kg), or less and its combined length, width, and height must measure 62 inches (158 linear cm) or less,  If your bag exceeds these weight or size or in quantity.,you have to pay extra charges.

You may also carry on one bag and one small personal item at no charge.

You will incur separate fees for exceeding our size, weight, and quantity limitations. For example, if an extra piece of baggage exceeds the weight and size limits, it will be subject to three fees: one for the extra bag, one for exceeding the weight limit, and one for going over the size restriction. Fees are charged for each additional bag, each way.

Charges of Additional, Overweight, & Oversize Baggage

• Travel within the United States (including the U.S. Virgin Islands & Puerto Rico) Any Bag 3: 125 USD, Bags 4-10: 200 USD each.

• Travel to/from/within Asia On or after July 1, 2011 Bags 3-10: 200 USD/CAD/EUR* each.

• When you notify  that your bags are delayed, you will receive a file reference number by Airline. Please keep this number, as you will need to refer back to it while when initiating claims or inquiring about your property. You may be eligible for a bag fee rebate if your first or second paid checked bag(s) have been delayed for more than 12 hours after being reported to a baggage service agent/office. You may also track the status of your checked luggage using our online tracking form.

Expense Reimbursement

• Delta Airlines requires that receipts be presented for all reasonable expense reimbursements incurred due to the delay of a passenger's bag. Reasonable expenses generally are $50 for the first 24hrs and $25 per day for the next 4 days the bag is delayed.

General Conditions of Baggage  Acceptance

• All baggage is subject to search.
• Airlines reserve the right to refuse bags that have a size, weight, or any condition that poses a safety or annoyance risk to other passengers and/or crew or baggage that is unsuitable for transportation on the aircraft.
• Specific baggage check-in rules vary by airport and must be met accordingly.
• Baggage on Delta flights can be checked at Delta’s airport curbside check-in, at any Delta airport kiosk or online via your computer or mobile phone.
• Please make sure your name is somewhere on your baggage.
• Baggage will only be checked to the destination on your ticket.

United Kingdom security regulations permit only one carry-on item for customers traveling from:

• London-Heathrow
• London-Gatwick
• Manchester
• Edinburgh