Change · by phone · 24/7, every day
Add Seats and Baggage to Your Flight
Add checked bags, pick seats, or buy extra legroom on an existing booking. An agent handles add-ons on any airline and knows when booking beats the airport.
Bag fees are lowest when added at booking or online before the airport, and highest at the counter. Seat fees vary by row and airline; families with young children are generally seated together free on US carriers when asked in advance.
Agents can add bags and seats to bookings on any airline and will flag when a fare upgrade includes the bag for less than the fee.
The cheapest fare is not always the cheapest trip once bags and seats are added: on basic economy, a carry-on and a seat assignment can cost more than the buy-up to standard economy that includes both. An agent runs that math for you, adds bags at the lower booking-time price, and — under newer rules — can usually seat young children next to a parent without a fee.
Calls are answered by licensed travel agents at our partner agency, 24/7. WarBird Flight is independent and not affiliated with any airline.
Who this is for
- Travelers who booked without bags and now need them
- Families who want to sit together
- Anyone who wants extra legroom or an exit row
Have ready when you call
- Confirmation code
- Number and rough weight of bags
- Seat preferences
How it works
- 1
Call with your confirmation code.
- 2
The agent adds bags or seats and quotes the fee.
- 3
You receive the updated itinerary by email.
Airline rules that apply
- Overweight (over 50 lb) and oversize bags carry additional fees on every carrier.
- Basic economy on some airlines restricts seat selection until check-in.
- Exit-row seats have age and ability requirements.
By airline: Delta Air Lines · American Airlines · Southwest Airlines · Alaska Airlines · Hawaiian Airlines · Air Canada · Lufthansa · British Airways
Ready when you are
Call and a licensed agent handles it on the spot. Updated confirmations are emailed as soon as the change is made.
Fees
Airline bag and seat fees are set by the airline and quoted by the agent. Our partner agency may charge a service fee for handling the add-on, disclosed before you approve it. See all fees.
Frequently asked questions
Is it cheaper to add bags at booking?
Yes, on most airlines. Airport fees are the highest tier.
Can my family sit together?
US carriers now guarantee free adjacent seating for children 13 and under with an adult when available; the agent requests it on the booking.
Can I add bags to a booking made elsewhere?
In many cases, yes, if the booking is on a major airline. The agent will check.
Guides that help with this
Airline policiesChecked Bag and Carry-On Rules Compared Across AirlinesHow the major US and international carriers differ on carry-ons, first-bag fees, and who gets bags free.
Booking tipsCarry-On or Checked Bag: How to Decide and Avoid Gate-Check SurprisesWhen carrying on saves time and money, when checking is smarter, and how to keep a full overhead bin from turning your carry-on into a gate-checked bag.
Booking tipsSeat Selection Fees: When You Pay, When You Don't, and Sitting TogetherHow seat fees work on the major US carriers, which fares include a seat, how families get seated together without paying, and when to just pick at check-in.
Airline policiesFlying with Sports Gear and Musical Instruments: Bags, Fees, and the Cabin RuleHow airlines handle golf clubs, skis, bikes, and surfboards, the rule that lets small instruments in the cabin, and how to protect a fragile item in the hold.- Booking tipsFlying With a Car Seat and StrollerWhen a car seat flies free, gate-checking a stroller, which seats are approved for a plane, and how to make the trip through the airport easier.
Related services
Written and maintained by the WarBird Flight editors. WarBird Flight is an independent booking service and is not affiliated with any airline.