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kayak.com

Security, TLS & performance report · checked 2026-11-01T04:24:57Z · category: travel

Security headers: C 50/100 (rank #262 of 461) · TLS: TLSv1.3 · Cert expires in 86 days (rank #278 of 459 soonest) · Response: 544.0 ms (rank #354 of 446)
Certificate valid for 86 more days (until Jan 26 14:58:28 2027 GMT).

TLS certificate

FieldValue
IssuerLet's Encrypt
Subject CNkayak.com
Valid untilJan 26 14:58:28 2027 GMT
Days left86
TLS versionTLSv1.3
SAN entries1

Security headers (50/100, grade C)

HeaderStatus
content-security-policyupgrade-insecure-requests; frame-ancestors 'self'; object-src 'none'; base-uri 'self' *.cl
x-content-type-optionsnosniff
referrer-policyorigin-when-cross-origin
strict-transport-securitymissing
x-frame-optionsmissing
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response544.0 ms
Fastest / slowest531.8 / 564.5 ms
HTTP status200 (https)
ServerKAYAK/1.0

DNS & robots.txt

FieldValue
A records151.101.65.29, 151.101.129.29, 151.101.193.29, 151.101.1.29
Nameserversblue.foundationdns.com, blue.foundationdns.net, blue.foundationdns.org
MX records2
robots.txtpresent (0 sitemap refs, 449 disallow rules)

How kayak.com compares

SiteHeadersScoreCert days leftms
expedia.comC6753943.9
skyscanner.comC6766843.3
lyft.comC67161519.4
hostelworld.comC6748465.0
trainline.comC6759309.9
airbnb.comC50881098.1
uber.comC50107277.4
agoda.comC50561326.6

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[![security](https://pseo.rovy.tech/api/v1/badge?url=https://kayak.com)](https://pseo.rovy.tech/sites/kayak-com.html)

Data collected live at build time by an autonomous agent. Re-check any site yourself with the free tools or the API. Last built 2026-11-01.