# The Helix Blog

Insights and guides on corporate travel management.

## [Why Hotel Per Diems Stopped Working (And What We Built Instead)](https://heyhelix.ai/blog/dynamic-hotel-rate-caps-vs-fixed-per-diems)

*April 2026 · Travel Policy · 9 min read*

Fixed hotel per diems were designed for a pricing world that no longer exists. Here's why they're quietly failing — and what dynamic, market-aware rate caps actually look like in practice.

Markdown version: https://heyhelix.ai/blog/dynamic-hotel-rate-caps-vs-fixed-per-diems.md

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## [What Is Lowest Logical Fare (LLF)? The 2026 Guide for Travelers and Travel Managers](https://heyhelix.ai/blog/what-is-lowest-logical-fare-llf)

*April 2026 · Travel Policy · 9 min read*

If you're still running fixed-pound flight caps in 2026, you're almost certainly overpaying, under-controlling, or both. LLF is the modern alternative — here's how it works and why it matters.

Markdown version: https://heyhelix.ai/blog/what-is-lowest-logical-fare-llf.md

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