What Size Bag

Family, cruise and train

Strollers, car seats and kids' bags on planes, and luggage rules for cruises and trains.

Stroller on a planePick your airline for its stroller and car seat rule: free to check, where to hand it over, and any size limit. Car seat on a planeThe FAA label a car seat needs on a plane, labels for seats made outside the US, seat widths by airline, booster seats and the CARES harness. Car seat travel bagsWhere each airline takes a car seat, free, and the airlines that won't cover damage to one checked without a padded case. Baby bag allowanceWhether a lap infant's diaper bag is extra or counts toward yours, airline by airline, plus checked bags for infants. Cruise luggage rulesHow many bags Carnival, Norwegian and Disney allow, Carnival's 50 pound and 16 x 24 inch limits, coolers, and what to keep with you. What you can't bring on a cruiseItem by item on Carnival, Norwegian and Disney: irons, steamers, power strips, surge protectors, hair tools, candles, fans, drones and alcohol. Amtrak luggage rulesAmtrak's carry-on and checked bag limits: 2 carry-ons of 50 lbs. and 28 x 22 x 14 inches, a personal item, and 2 free checked bags.

Family, cruise and train rules at a glance

The main rule on each family page, as of October 2026
RuleAnswer
StrollerFree on 14 of 15 airlines checked here
US-made car seat on boardLabel says “certified for use in motor vehicles and aircraft”
CARES harness22 to 44 lb, up to 40 inches tall
Car seat bag, Sun CountryNot liable for damage without 5 mm padding or a hard case
Diaper bag, American Airlines1 per child, on top of carry-on and personal item
Carnival bags1 per person (3 to 5 days), 2 (6 days or longer)
Norwegian bagsUp to 2 pieces per person, 50 pounds a piece
Disney bagsNo more than 2 bags per person
Clothes ironProhibited on Carnival, Norwegian and Disney
Surge protector, DisneyProhibited
Amtrak carry-on2 bags up to 50 lb, plus 1 personal item
Amtrak checked bags2 free, up to 50 lb and 75 linear inches

JetBlue doesn’t count a stroller toward your bag allowance. Airlines, cruise lines and Amtrak change these rules, so check with yours before you go.

Where we get our information from

Every answer is the FAA’s, the airline’s, the cruise line’s or Amtrak’s own rule. Checked against published data from American Airlines, JetBlue, Frontier, Breeze Airways and WestJet (plus 15 more).

See all 29 sources
  • FAA, Kids' Corner: flying with children, child restraint systems and CARES (last updated August 18, 2026)
  • American Airlines, Traveling with children (checked October 2026)
  • American Airlines, Carry-on bags and size limits (checked October 2026)
  • Delta, Children & Infant Items (checked October 2026)
  • Southwest, Lap Child Policy (checked October 2026)
  • Alaska Airlines, Traveling with strollers and car seats (checked October 2026)
  • Hawaiian Airlines, Traveling with strollers and car seats (checked October 2026)
  • JetBlue, Traveling with Kids (checked October 2026)
  • JetBlue, Traveling with lap infants (checked October 2026)
  • Frontier, Will I be charged a fee for bringing a stroller? (checked October 2026)
  • Frontier, Can I bring a car seat onboard? (checked October 2026)
  • Allegiant, Traveling with children (checked October 2026)
  • Sun Country Airlines, Contract of Carriage (updated October 15, 2025)
  • Breeze Airways, Contract of Carriage (updated March 20, 2025)
  • Breeze Airways, Travel Tips (checked October 2026)
  • Air Canada, Children and Travel: strollers and child restraint devices (checked October 2026)
  • WestJet, Travelling with an infant (checked October 2026)
  • WestJet, Car seats and restraint systems (checked October 2026)
  • British Airways, Car seats, pushchairs and children's bags (checked October 2026)
  • easyJet, Flying with children (checked October 2026)
  • Ryanair, What baby equipment can I bring on board? (checked October 2026)
  • Ryanair, If I am travelling with a baby, what is my bag allowance? (checked October 2026)
  • Carnival, Help: prohibited items, exemptions and luggage (checked October 2026)
  • Norwegian Cruise Line, What can't I bring onboard? (checked October 2026)
  • Norwegian Cruise Line, How many suitcases can I bring? (checked October 2026)
  • Disney Cruise Line, Prohibited and Restricted Items (checked October 2026)
  • Disney Cruise Line, Terms and Conditions for Residents of the United States (checked October 2026)
  • Amtrak, Carry-On Baggage Policy (checked October 2026)
  • Amtrak, Checked Baggage (checked October 2026)

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General guidance from airline, TSA and FAA rules, checked on the date shown. Rules change, and the airline and security officers decide on the day: check your airline before you fly.