About Carry-On Compliance Checker

Your free, comprehensive tool for checking carry-on luggage compliance with airline size restrictions worldwide.

Our Mission

Traveling should be stress-free, not filled with worries about whether your carry-on bag will be accepted at the gate. We created the Carry-On Compliance Checker to eliminate that uncertainty by providing instant, accurate information about airline baggage policies from around the world.

Why We Built This Tool

After experiencing the frustration of having bags rejected at airline gates due to size restrictions, we realized there was a need for a simple, reliable way to check carry-on compliance before arriving at the airport.

Our tool consolidates baggage policies from over 100 airlines worldwide, making it easy to:

  • Check if your bag meets size requirements for multiple airlines
  • Compare policies across different carriers
  • Get a compatibility score for your luggage
  • Access official airline baggage policy links
  • Plan your travel with confidence

How It Works

📏Measure Your Bag

Enter your bag's dimensions including wheels, handles, and any external pockets. Choose between inches or centimeters.

🔍Instant Analysis

Our system compares your dimensions against our database of 100+ airline policies in real-time.

📊Get Your Score

Receive a compatibility percentage and see exactly which airlines accept your bag size.

🌍Filter by Region

Focus on specific regions or airlines relevant to your travel plans for targeted results.

What’s New

  • Orientation-agnostic comparison: your bag can be rotated in any way. We sort both your bag’s dimensions and the airline’s limits and compare them element-by-element, so L/W/H labels don’t have to match (helps with airlines that publish H × W × L, e.g., Spirit).
  • Linear-dimension airlines respected: when an airline uses a total linear dimension (L+W+H), we accept compliance if your sum is within the limit.
  • Small tolerance: a 0.1" tolerance accounts for rounding/measuring variance near limits.
  • Unit consistency: inputs, presets, results, and SEO now reflect the unit you pick (inches or cm).
  • Strict orientation (per airline): some airlines require exact order matching (no rotation). We respect this with a per-airline strictOrientation flag.
  • Per-airline tolerance: airlines can override the default tolerance via epsOverrideto better reflect their enforcement thresholds.
  • Shareable URLs: your dimensions, unit, and selected airline are encoded in the URL for easy sharing and bookmarking.

How It Works (Under the Hood)

1) Unit normalization

We store airline data in inches. Whatever unit you choose in the form, we normalize to inches for the comparison, then display results back in your chosen unit.

2) Orientation-agnostic fit

We sort your three sides and the airline’s three sides ascending and compare side-by-side with a small tolerance. That means 17.5 × 13 × 7 will be checked against 22 × 18 × 10 in any rotation.

3) Linear-dimension rule

For airlines flagged as using linear dimensions, we check only that L+W+H ≤ airline limit (plus tolerance), which mirrors how those policies are enforced.

4) Tolerance

We apply a 0.1" tolerance to avoid false negatives caused by rounding and small measuring differences.

Note: Airlines may still apply additional rules (handles/wheels included, templates at gates, weight limits). Always verify specifics with your carrier.

Data Freshness

We track when each airline's baggage dimensions were last verified and display this in results where available. Policies can change without notice; please follow the provided official policy links to confirm before you fly.

Accessibility

We’ve improved keyboard navigation and screen reader support with ARIA roles for tabs and tab panels, clear labels and helper text on form fields, and an aria-live region for Fit Score updates.

Additional enhancements like focus states, fieldset/legend groupings, and better color contrast make the app more usable for everyone.

🔗 Deep Linking Demo

Click any link below to see how airline highlighting works:

Air Baltic
21.5" × 15.5" × 9"
Ryanair
22" × 16" × 8"
British Airways
22" × 18" × 10"
American Airlines
22" × 14" × 9"

How it works:

  1. 1. Click any airline link above
  2. 2. Enter bag dimensions in the form
  3. 3. Click "Check Compliance"
  4. 4. The selected airline will be highlighted in the results

URL Format: /?airline=airline-id
Example: /?airline=air-baltic

Our Data Sources

We source our airline baggage policies directly from official airline websites and update our database regularly to ensure accuracy. Our database includes:

Major Carriers

  • • American Airlines, Delta, United
  • • British Airways, Lufthansa, Air France
  • • Emirates, Qatar Airways, Singapore Airlines
  • • And many more...

Budget Airlines

  • • Ryanair, EasyJet, Wizz Air
  • • Spirit Airlines, Frontier, Allegiant
  • • AirAsia, Jetstar, Scoot
  • • And many more...
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Important Disclaimer

While we strive for accuracy, airline policies can change without notice. Always verify current baggage policies with your airline before traveling.

Frequently Asked Questions

Ready to Check Your Carry-On?

Start using our free tool now and travel with confidence knowing your bag will fit!

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