What changes

Shoulder-season trips are often 15–35% cheaper than peak-week equivalents for the same destinations.

When this tends to work

• Conditions similar to: European city breaks and US national parks, 2022–2025
• You can measure Total trip cost (lodging + flights) reliably
• The intervention is implemented consistently, not half-measured

When to be careful

• Your audience or product differs materially from the cited context
• Compliance costs or second-order effects outweigh the lift
• Evidence label is estimate—treat wide ranges as planning bands, not promises

Practical takeaway

Use the cited range for prioritization and test design. Verify against your own data before scaling.