aena.es

Readiness by lane

Green: aena.es. Thin bar: Travel Bookings & Trip Planning peer median.

Priority fixes for aena.es

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Accelerate

   Static files cached for 30 days or more

   Observed: A same-site stylesheet or script was cacheable for 7 days, short of the 30-day benchmark.

   Why it matters: Returning visitors and later page views reuse cached files instead of downloading them again.

   What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.

   49% of Travel Bookings & Trip Planning peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: Browser Caching Guide for Website Owners

2. Priority 2 · Accelerate

   Modern image formats in use

   Observed: The homepage had 21 images and none used WebP or AVIF.

   What to do: Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.

   41% of Travel Bookings & Trip Planning peers do this.

   Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format

3. Priority 3 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 7 external scripts without async or defer.

   What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.

   44% of Travel Bookings & Trip Planning peers do this.

   Guide: Control Third-Party Scripts Before They Control Your Page

4. Priority 4 · Accelerate

   Offscreen images lazy-loaded

   Observed: The homepage had 21 images and none used loading="lazy".

   What to do: Add loading="lazy" to images below the fold. Do not lazy-load the main hero image, because that delays the largest visible element.

   62% of Travel Bookings & Trip Planning peers do this.

   Guide: Lazy Loading Without Broken Pages

What aena.es already does well

Practices fewer than half of Travel Bookings & Trip Planning peers use.

• Nameservers spread across providersNameservers spread across more than one operator.13% of peers
• Content Security Policy presentContent-Security-Policy present.30% of peers
• Referrer-Policy setReferrer-Policy present.32% of peers

What we saw

Homepage checked

https://www.aena.es/

Homepage response

HTTP 200, after 1 redirect

TLS

TLSv1.3, HTTP/2

Certificate

ISTEC, 198-day validity, expiring 2027-02-26

CDN or edge

Akamai

DNS operators

2 self-run or other nameserver domains

HSTS

max-age 365 days, includeSubDomains

DMARC policy

p=reject

Homepage HTML

296 KB, gzip

Images on homepage

21 (svg 4)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

All 31 checks

Select a gap for the method and fix. How each check works

Compare with other Travel Bookings & Trip Planning sites

• budget.com69
• cozycozy.com69
• skyscanner.fr70
• skyscanner.pt70
• xcaret.com70

Travel Bookings & Trip Planning readiness benchmark