Independent bag planning

Airline baggage fees,
clear before you fly.

Baggage fees depend on more than weight. Check the airline, fare, route, date, bag number and payment stage in one place.

Start a baggage check for your flight

These trip details stay in this browser tab until you open the calculator. Enter each bag’s weight and outside dimensions there. Open the calculator directly.

The difference between a fee and a quote

A fee table helps you plan. But your ticket date, fare, airline, and any free-bag benefit can change what you pay. We’ll show a dollar amount only when those details match the airline’s published rule.

What you’ll find here

Browse 92 airline brands. We have checked detailed rules for 50; the others link you to an official place to start. A directory listing doesn’t tell you whether an airline flies your route today, so check your booking before you buy a bag.

Checked bag rules at a glance

A size or weight limit won’t tell you the full price. The same 45 lb bag is ordinary under some 50 lb policies and overweight under Frontier’s 40 lb standard.

QuestionWhat the airline saysNext check
American standard checked bag50 lb and 62 linear in for the published standard U.S. bagTicket date, Basic vs Main Cabin, online eligibility and any waiver
Southwest mainland checked bag50 lb and 62 linear in standard thresholdFare, April 2026 ticket boundary, Choice Extra or other benefit
Frontier standard checked bag40 lb and 62 linear in standard thresholdCheck your bag price; two published heavy-bag fees disagree

40 lb vs 50 lb guide · 23 kg vs 32 kg guide

Carry-on and personal item are different

An overhead suitcase and an underseat backpack use different size boxes. A bag that fits the box can still be excluded by a fare or require gate handling on a small aircraft.

CarrierOverhead carry-onUnderseat personal item
American22 × 14 × 9 in18 × 14 × 8 in
Delta22 × 14 × 9 in; 45 linear inUnderseat fit; no universal box confirmed here
JetBlue22 × 14 × 9 in17 × 13 × 8 in
Southwest24 × 16 × 10 inUnderseat fit

Where a lower bag cost can come from

Policy changes to check first

Before you leave for the airport

  1. Find the ticket’s operating airline and exact fare.
  2. Check the date the ticket was issued or changed.
  3. Count bags per traveler and per direction.
  4. Measure all three outside sides and weigh each bag.
  5. Check a separate excess or special-item rule if applicable.
  6. Confirm the purchase cutoff, bag-drop time and final price in the airline checkout.

How Bagwise checks policies · Browse official source links

Three questions travelers ask first

Does 50 lb equal 23 kg?

Not exactly. Fifty pounds is about 22.68 kg; 23 kg is about 50.71 lb. Use the airline’s original limit near a boundary.

Is a free checked bag free when it is overweight?

Not necessarily. A fare or card may cover the standard piece while excess weight or size follows a separate rule.

Can I use the same bag fee for a round trip?

Only when both directions have the same operator, fare, ticket-date rule, bag and purchase conditions. Otherwise check each leg.

Read all baggage questions