Think your airline ticket was a good deal?

You may get a good ticket price, but don't forget to factor in the hidden costs, like checked baggage fee's.  Here is a good posting from AirFareWatchDog.com:

Airline	First checked bag	Second checked bag	Additional bags	Overweight bags	Oversized bags
Airtran	$0 $15 ($20 effective Sept 1 2010)	$10 paid online, $20 at airport $25	$50	51-70 lbs (23-32kgs): $29 $39 71 to 99 lbs: $69 $79	62-70 total linear inches: $29 $39; 71-80 inches $69 $79
Alaska	$15; $20	$0 $20	3rd, $20; 4th or more $50 each	51-100 lbs: $50	63-80 inches: $50; 81-115 inches: $75
Allegiant	At flight check in, $35; gate checked bag: $35; purchased online: $14.99-$29.99	At flight check in, $35; gate checked bag: $35; purchased online: $14.99-$29.99	"Subject to additional fees"	"Subject to additional fees"	"Subject to additional fees"
American	$25 ($15 $25 to/from Canada; free for travel to/from US to Caribbean, Europe and India)	$35 ($30 $35 to/from Canada; $30 to/from Caribbean; $50 $60 for travel to/from US and Europe and India)	Bags 3-5: $100; 6th or more: $200 $150	51-70 lbs (23-32kgs): $50 $60; 71-100 lbs: $100 (bags over 70lbs not accepted on some international routes)	63 inches and over: $150 (to/from UK max size is 80 linear inches)
Continental	$23 ($2 more if not paid online)	$32 ($3 more if not paid online) $30 to/from Mexico, South America (exc. Brazil), $50 to/from Europe and India	3 or more bags each: $100 to/from US, Canada, Puerto Rico, US Virgins; $150 to/from Mexico, Caribbean, Central and South America; $200 other routes.	51-70 lbs (23-32kgs): $50 $100 to/from US, Canada and Puerto Rico; $200 other routes; Over 70 lbs not accepted.	63 inches and over: $100 $200
Delta	$23 ($2 more if not paid online)	$32 ($3 more if not paid online) $50 for European travel	For travel within the US and Canada: Third bag: $125; Bags 4 to 10 $200 each; For travel to/from Europe: no charge for first or second; $200 for 3-10 extra bags see Delta additional, overweight and oversized fees	51-70 lbs (23-32kgs): $90 ($150 for travel outside US; bags over 70 lbs not allowed on some international routes)	63-80 total linear inches: $150 $175
Frontier	$0 $15 $20	$25 $30 $20	$50	51-100 lbs: $75	63-80 inches: $75
JetBlue	$0	$20 $30 $35	$75	51-70 lbs: $50; 71-99 lbs: $100	63-80 inches: $75
Spirit	Note: if you change planes, you may be charged for each leg for all these fees. Checked bags: $28 paid online ($38 if paid at airport); $5 international. Carry on bag $30 online, $40-45 at airport; $20 for $9 Club members (one "personal item" free)	$35 online or $45 at airport; $5 more for international	Bags 3-5: $95 at airport; $85 online; $5 for international flights.	41-50 lbs $25; 51-70 lbs $50; 71 to 99 lbs: $100	62-79 inches: $100; 80 inches and over: $150
Southwest	$0	$0	3-9: $50; 10 and more: $110	51 -100 lbs: $50	62-80 inches: $50
United	$25 ($2 discount if paid online)	$35 ($3 discount if paid online); to/from US and Canada or South/Central America $30 (effective Mar 9 2011)	Within and between US, Canada, Puerto Rico, US Virgins: $100 (effective Mar 9, 2011); 5th or more: $250	Within and between US, Canada, Puerto Rico and US Virgins: 51-70 lbs $100 each; 71-99.9 lbs $200 each; other routes: $400	Within and between US, Canada, Puerto Rico and US Virgins: more than 62 linear inches: $100; Other routes: $200
US Airways	$25 at airport, $23 online	$35 at airport, $32 online, $50, online, to Europe ($55 at airport)	Bags 3-9: $125	51-70 lbs (23-32kgs): $70 $90 71 to 99 lbs: $120 $175	62-80 total linear inches: $100 $175
USA 3000	$15 if bought online, $25 otherwise	$25	Extra bags "subject to availability"	Over 50 lbs $25 extra; Over 70 lbs. Not accepted
Virgin America	$25 (up to 70 pounds)	$25 (up to 50 lbs)	Bags 3-10 $25	51-70 lbs $50; 71-100 lbs $100	$50 (63-80 linear inches)