Can you bring a diaper bag on a plane with Southwest Airlines when traveling with a baby?

 

Bringing a diaper bag on a plane with Southwest Airlines

 

Short answer: Yes — you can bring a diaper bag when traveling with a baby on Southwest Airlines.

Southwest and most U.S. carriers recognize the needs of families traveling with infants. A diaper bag is commonly allowed in addition to the standard carry-on allowance so parents can keep essentials (diapers, wipes, bottles, formula/breast milk, change of clothes) within reach.

• Carry-on allowance: Each ticketed guest normally may bring one carry-on bag and one personal item. When you have an infant, a diaper bag is typically accepted in addition to those items so you can carry baby necessities.
• Security screening: Baby food, breast milk, formula, and juice for infants are allowed through TSA in quantities greater than 3.4 ounces. You should separate these items from other liquids and declare them to the TSA officer at the security checkpoint for inspection.
• Stowage on board: Keep the diaper bag accessible if you need items during the flight. If it won’t fit under the seat, flight attendants can help stow it in an overhead bin. If traveling with a lap infant, have the bag easily reachable because you may need it during boarding, taxi, takeoff, and landing.
• Strollers and car seats: Many families use a stroller or car seat as well. Southwest typically permits strollers and car seats to be checked at the gate or ticket counter without an extra fee, so you can use them through the terminal and have them returned at the jet bridge. If you plan to gate-check, be prepared to attach any provided tag and retrieve the item at the aircraft door upon arrival.
• Packing tips: Pack an easily reachable change of clothes, a small changing pad, enough diapers for delays, sealed bottles or milk, disposable bags for soiled items, and a favorite small toy. Secure any sharp items (nail clippers, etc.) inside checked luggage if possible.
• Final check: Policies can be updated, so if you want absolute certainty for a specific itinerary, contact Southwest or check their official baggage page before travel. Arrive early at the airport to allow extra time for security and boarding with an infant.

Friendly reminder: At security, politely tell the TSA officer you have infant supplies to be screened — they’ll guide you through the process so you can get to your gate smoothly.