Speed Tools
Top Sites: Website Speed Leaderboard
World’s top websites ranked by Core Web Vitals performance.
Airline Booking
September 2025
| Rank | Website | LCPLargest Contentful Paint | CLSCumulative Layout Shift | INPInteraction to Next Paint |
|---|---|---|---|---|
🏆- | Frontier Airlines booking.flyfrontier.com | 3.10 sec | 0.05 | 125 ms |
🥈- | British Airways britishairways.com | 3.60 sec | 0.05 | 125 ms |
🥉- | Ryanair ryanair.com | 2.60 sec | 0.10 | 125 ms |
4- | Emirates emirates.com | 2.20 sec | 0.00 | 325 ms |
5⇡ | Lufthansa lufthansa.com | 2.50 sec | 0.15 | 300 ms |
6⇣ | Singapore Airlines singaporeair.com | 4.50 sec | 0.00 | 250 ms |
7- | All Nippon Airways ana.co.jp | 2.40 sec | 0.30 | 225 ms |
8⇡ | EasyJet easyjet.com | 2.20 sec | 0.20 | 325 ms |
9⇡ | KLM klm.com | 3.00 sec | 0.35 | 300 ms |
10- | JetBlue jetblue.com | 4.40 sec | 0.10 | 250 ms |
11⇡ | American Airlines aa.com | 4.90 sec | 0.30 | 175 ms |
12⇡ | Qantas book.qantas.com | 4.40 sec | 0.65 | 150 ms |
13⇡ | Virgin Atlantic virginatlantic.com | 3.80 sec | 0.70 | 200 ms |
14⇡ | Qatar Airways qatarairways.com | 3.30 sec | 0.10 | 625 ms |
15⇡ | Delta Air Lines delta.com | 4.10 sec | 0.65 | 175 ms |
16⇡ | Air France wwws.airfrance.fr | 3.50 sec | 0.40 | 575 ms |
17⇣ | Alaska Airlines alaskaair.com | 5.70 sec | 0.60 | 175 ms |
18⇡ | Spirit Airlines spirit.com | 3.40 sec | 0.90 | 325 ms |
19- | Southwest Airlines southwest.com | 4.70 sec | 0.30 | 275 ms |
20⇡ | Japan Airlines booking.jal.co.jp | 4.30 sec | 0.20 | 425 ms |
21⇣ | Virgin Australia book.virginaustralia.com | 2.40 sec | 0.65 | 625 ms |
22⇣ | United Airlines united.com | 5.80 sec | 0.45 | 600 ms |
23- | Scoot booking.flyscoot.com | 5.90 sec | 0.15 | 425 ms |
24- | Hawaiian Airlines shopping.hawaiianairlines.com | 7.90 sec | 0.85 | 375 ms |
25- | Cathay Pacific book.cathaypacific.com | 13.60 sec | 0.45 | 750 ms |
About Website Speed Leaderboard Project
We ranked the world’s top websites based on Core Web Vitals, the most recognised indicators of great user experience on the web today.
Using real-world data from the Chrome User Experience Report, these monthly leaderboards showcase the fastest websites across industries, highlighting those that deliver exceptional performance.
Your questions answered
What determines a website's leaderboard position?
Websites are ranked best to worst based on their Core Web Vitals performance. Each website receives a score that combines the performance of three key metrics: Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP).
What are Core Web Vitals?
Core Web Vitals (CWV) are a set of metrics used to measure user experience on the web. Each metric measures a different aspect of user experience, focusing on initial content display, visual stability, and responsiveness. For more on CWV, read our guide.
How often are leaderboards updated?
Leaderboards are updated once per month. Monthly data is collected from the Chrome User Experience Report, which is released around the 15th of each month.
What websites are included?
Each leaderboard is a curated list of the world's top websites. Websites are hand-picked based on their global notoriety. Our goal is to provide a diverse range of websites across different segments and industries.
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