Airlines find new ways to charge us for everything! The Airgarewatchdog has just released their 2015 guide to all domestic airlines’ fees (as pertaining to the economy only).
The airlines are listed alphabetically:
http://www.airfarewatchdog.com/blog/22403941/airline-fees-guide/
See for example, United
Booking/Reservation Fees
Same-day change fee: Up to $75 per passenger, depending on MileagePlus status. Other change fees: Free to $1,000 per passenger, based on applicable fare rules. Fare Lock (hold reserved fare and purchase at later time): $6.99 to $14.99. Premier access (dedicated airport check-in lines, exclusive security lanes at select airports, and priority boarding): From $9 to $59 per segment. United agent reservation fee: $25 by phone, $30 at a city ticket office, and $35 at the airport. Economy Plus seating: $9 to $299 per person, per flight; $499 to $1,099 per person for subscription. Unaccompanied minor: $99 to $150 per minor, per direction. Upgrade during booking: Up to $9,999 per person, per flight. Upgrade during check-in: Up to $9,999 per person, per flight.
Baggage Fees
Personal item: Free, First carry-on bag: Free, Checked bags: Checked-bag allowance varies depending on flight origin/destination locations, cabin, status level, military status, and date of purchase; 3 bags up to 70 pounds free for military and dependents on personal travel; 4 bags up to 70 pounds free for military and dependents flying on United Economy on official business; 5 bags up to 70 pounds free for military and dependents flying on United Global First, United Business First, United First, or United Business on official business. Checked-baggage subscription (you and up to 8 passengers on the same reservation can each check up to 2 standard bags per flight for free): From $349 to $999. Baggage delivery (baggage will be delivered from airport to your destination at home, hotel, office, etc.): From $29.95 to $109.95 per order. Excess bag: From $150 to $200 per bag (checked-bag allowance varies; see above). Overweight bag (50 to 70 pounds): $100 to $200. Overweight bag (over 70 pounds): $400. Oversized bag (62 to 115 linear inches): $200. Special items (antlers, bicycles, dry ice, kiteboards, surfboards, vaulting poles, windsurfing sailboards, etc.): From $150 to $200. Carry-on pet fee: $125 per direction of travel.
MileagePlus Frequent-Flyer Fees
Premier Accelerator (purchases count toward Premier qualifying miles balance): Up to 30 cents per mile. Award Accelerator (increased frequent-flyer mileage with more award miles): Up to 3.3 cents per mile. Buy award miles: 3.5 cents per mile. United Club membership: Up to $50 per person for one-time pass; from $400 to $500 per year, plus $50 initiation fee per person for membership; from $650 to $750 per year, plus $50 initiation for membership with spouse. Upgrade award co-pay: Up to $600 per person, per flight.
In-Flight Fees
Wi-Fi Internet access (available on either a per-hour or per-flight basis, depending on the flight): $1 to $12.50 per hour; $3.99 to $29.95 per flight. DIRECTV: Up to $7.99. Alcoholic beverages: From $6.99 to $15.99. In-flight dining: From $3.29 to $9.99. In-flight telephone: $2.99 to $10 access fee, plus an additional $6 to $10 per minute.
Miscellaneous Fees
Lost ticket: $150 per ticket, Trip insurance: $19 to $252.