T-355 British Airways reward seat booking time calculator

BA releases reward seats 355 days before departure, at midnight UK time (or 1am in summer). Premium cabins can sell out in minutes.

Knowing the exact time to call is critical, find yours:

Availability status

Travel date
Status Already released

Less than 354 days away — seats are already released.

Check ba.com for availability

Booking timeline

Travel date
Seats release
Call BA at
Countdown

Seats appear 354 days before travel — BA counts the release night as day one.

How to book

Executive Club: 0344 493 0787 (UK) or +44 203 250 0145 (international)


  1. Call at the time above, just before seats go live.
  2. Stay on hold until seats appear — don't hang up.
  3. Give your Executive Club number, dates, route, and cabin class.
  4. Why call? The call centre can hold seats for you while you're on the phone - unlike ba.com.

Before you call

  • Business and First can sell out in minutes.
  • Set an alarm — don't rely on staying awake!
  • Keep backup dates ready (+1–2 days) so you call again.
  • Book one-way for flexibility — return space often releases separately.
  • Calling from abroad? Check the UK time first.
  • Partner award space may open at a different date.

The release time is always midnight GMT — that's midnight UK time in winter, or 1am the following day in summer.

Privacy Policy

Last Updated: October 2025

1. Introduction

This Privacy Policy explains how we collect, use, and protect your information when you use the BA T-355 Booking Calculator ("the Service").

2. Information We Collect

Information You Provide: When you use our calculator, you enter travel dates. This information is processed locally in your browser and is not transmitted to our servers or stored permanently.

Automatically Collected Information: We may collect standard web analytics data including IP addresses, browser type, device information, and pages visited through cookies and similar technologies.

We don't collect any other personally identifiable information.

3. How We Use Your Information

We use the information we collect to:

4. Cookies and Tracking

We use cookies and similar tracking technologies for:

You can control cookies through your browser settings. Note that disabling cookies may affect website functionality.

5. Third-Party Services

Google Analytics: We use Google Analytics to understand how visitors use our site. Google Analytics uses cookies to collect anonymous information.

6. Data Storage and Security

Your travel date calculations are processed locally in your browser and are not stored on our servers. We implement reasonable security measures to protect any data we do collect.

7. Your Rights

Depending on your location, you may have rights including:

8. Children's Privacy

Our Service is not intended for children under 13. We do not knowingly collect information from children under 13.

9. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last Updated" date.

10. Contact Us

If you have questions about this Privacy Policy, please contact us at: hello@t355calculator.com

11. International Users

This website is operated from the United Kingdom. If you are accessing from outside the UK, please be aware that your information may be transferred to, stored, and processed in the UK.