The Essential Guide to Airline Carry-On Rules: What Really Fits in the Cabin
Navigating airline carry-on policies (when traveling to Europe) can feel like deciphering a secret code—especially when rules vary not just by country, but by airline and even fare type. Whether you’re flying with a legacy carrier like Air Canada or British Airways, or navigating the strict policies of budget airlines like Ryanair, understanding exactly what you can bring onboard is crucial to avoiding surprise fees, gate-check frustrations, and travel day stress.
This guide cuts through the confusion with clear, actionable information on cabin baggage allowances for major US, Canadian, and European airlines—plus direct links to official policies—so you can pack smart and board prepared. I’ve also written a guide to travelling with hidden disabilities so you can get airport assistance with luggage and mobility or other issues.
My experience (10+ years of changing airline carry-on rules): I wear items twice, prioritize soft-sided bags that can compress under seats, and I’ve had a hard-sided bag fail under stress (Mexico trip). Use this perspective alongside official rules below.
- The Essential Guide to Airline Carry-On Rules: What Really Fits in the Cabin
Airline Carry-on: Always Check Your Specific Flight!
Rules change often. For convenience, see “Official Sources” at the end for direct baggage policy links.
Most US Airlines (Delta, United, American)
• Personal item: ~18×14×8 in (45×35×20 cm), under-seat
• Overhead: 22×14×9 in (56×36×23 cm)
• Notes: Both usually included on standard fares; Basic Economy may restrict overhead
Air Canada
• Personal item: 17×13×6 in (43×33×16 cm)
• Overhead: 21.5×15.5×9 in (55×40×23 cm)
• Notes: Weight limits may apply; check fare type
British Airways
• Personal item: Small handbag/laptop bag
• Overhead: 22×18×10 in (56×45×25 cm), up to 51 lb (23 kg)
• Notes: Both typically included
Air France
• Personal item: Purse/laptop bag
• Overhead: 21.7×13.8×9.9 in (55×35×25 cm), up to 26 lb (12 kg)
• Notes: Weight limit enforced
Aer Lingus
• Personal item: Small under-seat bag
• Overhead: 22×16×10 in (55×40×25 cm), up to 22 lb (10 kg)
• Notes: Weight limit enforced
Ryanair
• Personal item (free): 40×25×20 cm (15.7×9.8×7.9 in), under-seat only
• Overhead (paid “Priority & 2 Cabin Bags”): 55×40×20 cm
• Notes: Strict sizing; fees higher at airport
About the A4E personal item standard: A4E has supported a move toward a common under-seat personal item guideline of 40×30×15 cm (15.7×11.8×5.9 in) among member airlines. Scope and timelines can vary by carrier, and this does not apply to overhead luggage. Always verify your specific flight and fare.
Overhead Luggage (Carry-On)
Size: Typically 55x40x20cm or larger (varies by airline)
Location: Goes in the overhead bin
Purpose: Your main luggage (clothes, shoes, toiletries)
Important: NOT covered by the A4E guarantee — rules still vary wildly!
Budget Airlines: Often charge extra for this (Ryanair, EasyJet, etc.)
Airline by Airline details
US Airlines (Delta, United, American)
Personal item: Must fit under seat (approx 18x14x8 inches)
Carry-on: Fits in overhead (22x14x9 inches)
Weight: Usually no weight limit (but you must be able to lift it)
Free?: Yes for most main cabin fares
Watch for: Basic Economy may NOT include overhead bag
Air Canada
Personal item: 17x13x6 inches
Carry-on: 21.5×15.5×9 inches
Weight: Up to 22 lb (10 kg)
Free?: Basic fares only get personal item; Standard gets both
British Airways
Personal item: Handbag/laptop bag
Carry-on: 22x18x10 inches, max 51 lb (23 kg)
Free?: Yes, both included
Air France
Personal item: Purse, laptop bag
Carry-on: 21.7×13.8×9.9 inches, max 26 lb (12 kg)
Free?: Yes for all economy fares
Aer Lingus
Personal item: Small bag under seat
Carry-on: 22x16x10 inches, max 22 lb (10 kg)
Free?: Yes for most fares
Ryanair – special rules (most restrictive!)
Ryanair is among the strictest and monetizes overhead baggage.
INCLUDED FOR FREE:
· ONE small personal bag only: 40×25×20 cm (15.7×9.8×7.9 in)
· Must fit under seat in front of you
PAY FOR:
· “Priority & 2 Cabin Bags” option: Adds ONE overhead bag (55×40×20 cm) + your personal bag
· Cost: €6–€30 each way if booked online (can be much more at the airport)
Ryanair Pro Tips:
Book Priority early — it’s cheaper
They WILL measure – at gate with sizing boxes
Airport price: Fees are higher; book online
If it doesn’t fit, you pay — pack to the exact size
Note: Any Europe-wide personal-item guideline does not automatically change Ryanair’s policy. Always verify your flight’s current allowance.
Universal Carryon Rules (All Airlines)
What ALWAYS Fits Free (Personal Item):
· Handbag, purse, laptop bag
· Small backpack (check dimensions)
· Must fit completely under seat
Common Size Limits:
· US/Canada overhead: 22×14×9 in (56×36×23 cm)
· Europe overhead: Often 55×40×20 cm (21.7×15.7×7.9 in)
· Weight: Europe often has limits (8–12 kg); US usually doesn’t
What You CAN’T Bring (Any Airline):
· Liquids over 100 ml (3.4 oz) in one container
· Total liquids over 1 liter (quart-sized bag)
· Sharp objects (knives, scissors > 4 inches)
· Most tools, sports bats, firearms
· Some batteries (check power bank rules)
Medications & Baby Items:
· Exempt from liquid rules but declare at security
· Include formula, baby food, medications
Smart packing tips
Use a soft-sided bag – it can squish into sizing boxes
Wear your bulky items – jacket, boots, sweater
Buy Priority on budget airlines – usually cheaper than checking a bag
Weigh at home – European airlines weigh at check-in
Put heavy items in personal item – they rarely weigh those
Keep essentials in personal item – in case overhead bins are full
Red alert checklist (day before flight)
- Check YOUR booking for YOUR baggage allowance
- Measure your bags with a tape measure
- Weigh your bags (for European flights)
- Print your “Priority” receipt if you bought it (Ryanair)
- Have quart-sized liquids bag ready
- Pack medications in accessible spot
Recommended perfect fit luggage
Note: Always measure the actual bag when it arrives; manufacturer specs can vary.
1. CabinZero Classic 28L Backpack
Dimensions: 40 x 29 x 15 cm (Perfect!)
Why it’s great: Made specifically for airline restrictions, ultra lightweight, water-resistant, multiple compartments and fits a 16” Laptop.
Best for: One-bag travelers who want maximum capacity within limits
Price: starts at around $150.00
Dimensions: 40.6 x 29.2 x 15.2 cm (Very close – within margin of error)
Why it’s great: Affordable, basic, gets the job done but is kind of awkward and doesn’t last long
Best for: Budget-conscious travelers
Price: starts at under $50.00
Dimensions: 40.6 x 29.2 x 14 cm (Excellent fit)
Why it’s great: Premium quality, excellent organization, camera-friendly, fits a 15” laptop
Best for: Photographers and tech enthusiasts
Price: starts at $240.00
Dimensions: 44 x 33 x 19 cm (Can compress to fit when not overpacked)
Why it’s great: Comfortable suspension, compressible, trusted brand, fits most 16” laptops
Best for: Those who want comfort and can pack light enough to compress
Price: starts at around $150.00
Dimensions: 43 x 28 x 20 cm (Slightly flexible material)
Why it’s great: Durable, water-resistant, eco-friendly, fits most 15” laptops
Best for: Outdoor enthusiasts needing durability
Price: starts at around $150.00
6. Travelon Anti-Theft Backpack
Dimensions: 43 x 28 x 16 cm (Close enough when not overstuffed), has padded sleeve for tablet or laptop up to 13″
Why it’s great: Security features, slash-resistant, RFID blocking
Best for: Urban travel and security-conscious travelers
Price: starts at around $63.00
7. Matein Travel Backpack (my personal favourite)
Dimensions: 44 x 30 x 16 cm (Slightly tall but works when not packed full), fits up to a 17” lap top
Why it’s great: Under $50, USB charging port, water-resistant
Best for: Students and budget travelers
Price: starts around $42.00
8. Eastpak Tranverz wheeled Luggage
Dimensions: 9″L x 12.6″W x 20″H RyanAir approved
Why it’s great: Dual Compartments, TSA Lock, Compression Straps & Smooth-Wheeling System
Best for: City travellers as it is lightweight and waterproof
Price: starts around $160.00
Dimensions: 55L x40W x20H cm
Why it’s great: Foldable travel Duffle
Best for: City travellers and weekend trips as it is lightweight and waterproof
Price: starts around $20.00
Final Advice
Budget airlines (Ryanair, EasyJet, Spirit, Frontier) are the strictest — assume you only get a small under-seat bag unless you pay extra.
Traditional airlines are more generous but may charge for Basic Economy fares.
When in doubt:
- Check airline website with your booking code
- If uncertain, pay for the upgrade in advance (cheaper than at airport)
When packing, ask: “Could I survive with just what’s in my personal item?” (Gate agents sometimes force-check overhead bags)
FAQS
• What size is the standard under-seat personal item in Europe?
Many airlines reference ~40×30×15 cm; adoption and enforcement vary. Always verify for your flight.
• Do US airlines have weight limits for carry-ons?
Usually no specific weight limit, but you must be able to lift the bag into the overhead. Some international carriers do weigh.
• Is Basic Economy different?
Often yes. Basic Economy may exclude overhead bags on certain routes or airlines; check your fare conditions.
• Are medications and baby items exempt from liquid rules?
Yes, but declare them at security and pack them for easy inspection.
Official Sources
• Delta, United, American baggage policies
• Air Canada baggage policy
• British Airways baggage policy
• Air France baggage policy
• Aer Lingus baggage policy
• Ryanair baggage policy
• A4E announcement on personal item guideline
Travel Smarter, Not Harder
Carry-on rules are more than just fine print—they’re a fundamental part of modern air travel that can impact your budget, convenience, and overall experience. While traditional airlines generally offer reasonable allowances, budget carriers have turned baggage into a revenue stream, making awareness your best defence. The golden rule remains: always verify your specific allowance using your booking reference before you pack. By understanding these policies, measuring carefully, and planning ahead—especially for strict airlines like Ryanair—you can avoid costly fees, keep your essentials with you, and start your journey on the right foot. Safe travels.