Here we list, airline by airline, fees for ticket changes (non refundable fares); booking fares in person or by phone, kids flying solo, bringing a pet into the cabin, and booking fares other than online. As you can see, Southwest has the lowest and fewest fees, followed by other low cost carriers such as Airtran and Spirit. Note that most of these fees, unless otherwise noted, are for domestic flights; fees for international services may be higher.

• Non-refundable ticket change fee: $150
• Same day change fee:$50
• Reservation by phone fee: $15
• Unaccompanied minor fee: $50

• Carry on bag: Free
• First checked bag: $25
• Second checked bag: $35
• Additional bags fee: $75 each
• Overweight bags: $75
• Oversize bags: $75 (waived for business class, active duly military, and elite frequent flyers)
• In-cabin pet fee: $75

• "Last minute" ticketing: $0
• In phone/in person ticketing: $15
• Date/itinerary change: One free allowed, additional $150
• Redeposit Miles: $150
• Same day change fee: $25

• Seat Selection Fee:  $10-$30
• Priority Boarding Fee:  $10
• Name Change Fee: Not offered
• Other Fees: additional $75 each way for bikes, surf boards and other sporting equipment over 50 pounds

• Non-refundable ticket change fee: $125 Fee for changes made less than 60 days prior to ticketed flight departure. $0 for changes made 60 days in advance.
• Same day change fee: $25
• Reservation by phone fee: $15
• Unaccompanied minor fee: $25 – $50

• Carry on bag: Free
• First checked bag fee: $20 ($25 effective Oct. 30, 2013)
• Second checked bag fee:$20 ($25 effective Oct. 30, 2013)
• Additional bags fee: $50 ($75 effective Oct. 30, 2013)
• Overweight bags: $50 for 51-100lbs
• Oversize bags: $50-$75
• Gate check: $25
• (1^st/2^nd bag fees waived for elite frequent flyers, flying within Alaska, active military)
• In-cabin pet fee: $100

• "Last minute" ticketing: $0
• In phone/in person ticketing: $15 (for Alaska flights); $25 (for partner flights)
• Date/itinerary change: $75 if made online; $100 if made via phone agent
• Redeposit Miles: $75 if made online; $100 if made via phone agent
• Same day change fee: $25 (only if same award seat is available within six hours of flight)

• Seat Selection Fee: None.
• Priority Boarding Fee: not offered.
• Name Change Fee: not offered.
• Other Fees: Paid upgrades 24 or fewer hours before flight: $25-$200 per flight; Left on board item return fee, $20.

• Non-refundable ticket change fee: $50 per segment ($75 per segment effective Oct 30, 2013; waived if you buy "TripFlex")
• Reservation by phone fee: $15
• Unaccompanied minor fee: service not offered

• Carry on bag: $10 to $75 depending on when and where purchased and route flown
• Checked bag fee: $15 to $75 depending on when and where purchased and route flown
• Overweight bags: $50 for 41-70 pounds; $75 for 71-100 pounds
• Oversize bags: $75 if overall dimensions over 80 linear inches.
• In-cabin pet fee: $100

• Does not have a frequent flyer program

• Seat Selection Fee: Up to $75
• Priority Boarding Fee: $5
• Name Change Fee: $50
• Other Fees: Waive cancellation/change fees: $11.50 (TripFlex)

• Non-refundable ticket change fee: $200
• Same day change fee: $75
• Reservation by phone fee: $20
• Unaccompanied minor fee: $150

• Carry on bag: Free
• First checked bag fee: $25  (free to most international destinations)
• Second checked bag fee:$35
• Additional bags fee: $150 each
• Overweight bags: $100 for 51-70 lbs; $200 for 71-100 lbs
• Oversize bags: $200
• In-cabin pet fee: $125-$175

• "Last minute" ticketing: 20 days or less incurs $75 charge
• In phone/in person ticketing: $25 by phone/$35 in person
• Date/itinerary change: $150 (MileSAAver Award tickets for which the only confirmed change is to the date and/or time will not incur the change fee)
• Redeposit Miles: $150 (all additional award tickets returning to same account at same time are $25 each)
• Same day change fee: $75 (free if award seats are available in the same category)

• Seat Selection Fee: Free, unless you choose "Preferred Seats: $4-$99 per flight; "Main Cabin Extra" seats $8-$159 per flight.
• Priority Boarding Fee: Group 1 boarding $9
• Name Change Fee: Not offered.

• Non-refundable ticket change fee: $200 (up to $450 on some international fares)
• Same day change fee: $50
• Reservation by phone or ticket office fee: $25-$35
• Unaccompanied minor fee: $100

• Carry on bag: Free
• First checked bag fee: $25 ($0 to international destinations except Canada and Caribbean)
• Second checked bag fee:$35 ($40-$100 for some international destinations)
• Additional bags fee: $125 for third bag; $200 each for bags 4-10
• Overweight bags: $90 for 51-70lbs; $175 for 71-100lbs
• Oversize bags: $175-$300 (These fees may be higher or lower for some international destinations and are waived for some elite level frequent flyers, active military, American Express SkyMiles Cardmembers, etc).
• In-cabin pet fee: $125

• "Last minute" ticketing: $0
• In phone/in person ticketing: $25
• Date/itinerary change: $150 (warning! no changes/cancelations are permitted within 72 hours of departure; all miles forfeited)
• Redeposit Miles: $150 (no changes/cancelations are permitted within 72 hours of departure)
• Same day change fee: $50
• Seat Selection Fee: $9-$59 for "preferred seats" per segment.

• Priority Boarding Fee: $10 per flight.
• Name Change Fee: Not offered.
• Other Fees: $9-$180 per segment for "Economy Comfort" seating.

• Non-refundable ticket change fee: $50-$100
• Reservation by phone fee: None
• Unaccompanied minor fee: $100 on "Basic" fares, $50 otherwise; free for frequent flyer minors with "status"

• Carry on bag: Free on all fare types except "Basic" fares if fare purchased at FlyFrontier.com or by phone from Frontier directly; $25 for "Basic" fares; up to $100 if paid for at departure gate.
• First checked bag: $20 – $25
• Second checked bag: $30
• (Above fees are waived on certain fare classes and for frequent flyer members with status)
• Additional bags fee: $75 each
• Overweight bags: $75
• Oversize bags: $75
• In-cabin pet fee: $75 – $125

• "Last minute" ticketing: $0
• In phone/in person ticketing: $0
• Date/itinerary change: $75 (if changes are made within 7 days before departure, otherwise free)
• Redeposit Miles: $75
• Same day change fee: $25-50 depending on ticket type

• Seat Selection Fee: $5 to $100 per segment; free on higher fare classes.
• Priority Boarding Fee: included in above.
• Name Change Fee: Free on some fares, $50-$100 on lower fare classes.

• Non-refundable ticket change fee: $75-$150 depending of cost of ticket. Changes made 60 days of more prior to departure cost $75 no matter the fare. (If reservation not cancelled or changed prior to departure, entire fare is forfeited).
• Same day change fee:$50. Standing by for one flight prior is free.
• Reservation by phone fee: $20
• Unaccompanied minor fee: $100

• Carry on bag: Free
• First checked bag: Free
• Second checked bag: $40
• Additional bags fee: $75 each
• Overweight bags: $50 for 51-70lbs; $100 for 71-99lbs
• Oversize bags: $75
• Pet flight fee: $100

• "Last minute" ticketing: $0
• In phone/in person ticketing: $20
• Date/itinerary change: $50-$100
• Redeposit Miles: $50-$100
• Same day change fee: $50

• Seat Selection Fee: "Even More Space" seats with extra legroom: $10-$90 per flight.
• Priority Boarding Fee: Included in above.
• Name Change Fee: Not offered.

Hawaiian

Ticketing Fees

• Non-refundable ticket change fee: $30-$200
• Reservation by phone fee: $15-$35
• Unaccompanied minor fee: $35-$100

• Carry on bag: Free  (but officially a 25-pound weight limit)
• First checked bag: $17-$25 (free to some international destinations)
• Second checked bag: $17-$35 (free to some international destinations)
• Additional bags fee: $25 inter-island, $100 otherwise. (May be higher to some international destinations).
• Overweight bags: $25-$200
• Oversize bags: $25-$100 (higher for some international destinations)
• In-cabin pet fee: $35-$225

• "Last minute" ticketing: $0
• In phone/in person ticketing: $15-$35
• Date/itinerary change: $30-$50
• Redeposit Miles: $30-$150

• Seat Selection Fee: "Preferred Seats" $35-$75 per flight.
• Priority Boarding Fee: not offered.
• Name Change Fee: Free for Coach Plus fares

Ticketing Fees

• Non-refundable ticket change fee: $115-$125
• Same day change fee: $25 to stand by for earlier flight.
• Reservation by phone fee:$10
• Unaccompanied minor fee: $100

• Carry on bag: $25-$50 ($100 if you pay at the gate, applies to all bag fees)
• First checked bag: $20-$45
• Second checked bag: $30-$55
• Additional bags fee: $75-$100 each
• Overweight bags: $25 for 41-50lbs; $50 for 51-70lbs; $100 for 71-99lbs.
• Oversize bags: $100-$150
• In-cabin pet fee: $100

• "Last minute" ticketing: up to $100
• In phone/in person ticketing: $25
• Date/itinerary change: $110 (not permitted within 24 hours of departure; Refunds are allowed for reservations made 7 days or more prior to your departure, provided that you make the refund request within 24 hours of your initial reservation.)
• Redeposit Miles: $ 110 (not permitted within 24 hours of departure)
• Same day change fee: $25 (only for an earlier flight)

• Seat Selection Fee: $1 to $50
• Name Change Fee: Not offered.
• Other Fees: $75 for bikes; $10 for airport agents to print boarding pass.

• Non-refundable ticket change fee: Free
• Same day change fee: None but any fare difference will apply
• Reservation by phone fee: Free
• Unaccompanied minor fee: $50

• Carry on bag: Free
• First checked bag: Free
• Second checked bag: Free
• Additional bags fee: $50 each for 3-9 bags; $110 each for more
• Overweight bags: $75
• Oversize bags: $75
• In-cabin pet fee: $75

• "Last minute" ticketing: $0
• In phone/in person ticketing: $0
• Date/itinerary change: $0 (but any fare difference will apply)
• Redeposit Miles: $ 0
• Same day change fee: Depends on type of award and possible point difference

• Seat Selection Fee: None
• Priority Boarding Fee: Early Bird check-in $12.50; "Upgraded boarding" $40
• Name Change Fee: Not offered.

• Non-refundable ticket change fee: $200
• Same day change fee: $75
• Reservation by phone fee: $25
• Unaccompanied minor fee:$150

• Carry on bag: Free
• First checked bag fee: $25
• Second checked bag fee:$35
• Additional bags fee: $100 each (up to $200 on some international routes)
• Overweight bags: $100 51-70lbs; $200 71-100lbs (up to $400 on some international routes)
• Oversize bags: $100 (up to $200 on some international routes)
• In-cabin pet fee: $125-$250

• "Last minute" ticketing: $75 if booked within 21 days of departure (Free to $50 for frequent flyer members with status)
• In phone/in person ticketing: $25
• Date/itinerary change: $75 if made 21 or more days prior to travel; $100 if made less than 21 days (lower or no fees for frequent flyer members with status)
• Redeposit Miles: $200 (free to $125 for frequent flyer members with status)
• Same day change fee: $75

• Seat Selection Fee: None, unless you choose an extra-legroom seat.
• Name Change Fee: Not available
• Other Fees: "Premier access" fee (priority check-in, TSA lines, and boarding) $9 and up per flight.

• Non-refundable ticket change fee: $200 (up to $450 on some international fares)
• Same day change fee:$75-$150 depending on destination to move to an earlier flight within 6 hours of your original time
• Reservation by phone fee: $25
• Unaccompanied minor fee:$100

• Carry on bag: Free (but a 40-pound weight limit)
• First checked bag: $25 (free for some international flights)
• Second checked bag: $35 ($100 for trans-Atlantic, free for trans-Pacific and Brazil)
• Additional bags fee: $125 for the third; $200 for fourth-ninth bags
• Overweight bags: $90 for 51-70 lbs; $175 for 71-100lbs.
• Oversize bags: $175
• In-cabin pet fee: $125

• "Last minute" ticketing: $75 if ticketed 21 days or less
• In phone/in person ticketing: $30 for domestic travel/$40 for international travel+
• $25-50 award processing fee
• Date/itinerary change: $150
• Redeposit Miles: $150
• Same day change fee: $75

• Seat Selection Fee: None unless you choose a "Choice Seat" (see below)
• Priority Boarding Fee: from $10 per flight
• Name Change Fee: Not offered.
• Other Fees: "Choice Seats" $5-$99 each way depending on flight; "GoFirst" Upgrades $50-$250 per flight (within 24 hours of departure).

• Non-refundable ticket change fee: $100
• Same day change fee: $25-$50
• Reservation by phone fee: $20
• Unaccompanied minor fee:$75-$125

• Carry on bag: Free
• First checked bag: $25
• Second checked bag: $25
• Additional bags fee: $25 each
• Overweight bags: $50 for 51-70lbs; $100 for 71-100lbs
• Oversize bags: $50
• In-cabin pet fee: $100

• "Last minute" ticketing: $0
• In phone/in person ticketing: $20
• Date/itinerary change: $100
• Redeposit Miles: $100
• Same day change fee: $25-$50

• Seat Selection Fee: None.
• Priority Boarding Fee: $30
• Name Change Fee: Not offered
• Other Fees: Last minute (6-24 hours before flight) upgrades $39 to $399 each way.