May 18, 2026 · Source: The Flight Deal

Seattle to Billund Flights 2024/2025 - Delta from $552

Written by Flavia Voican, Travel Researcher at 360 Business Tour

Independent European travel research. Verified data, updated for 2026

Source: Delta: Seattle – Billund, Denmark. $552 (Basic Economy) / $752 (Regular Economy). Roundtrip, including all Taxes

Delta offers roundtrip Basic Economy flights from Seattle (SEA) to Billund, Denmark (BLL) starting at $552, with Regular Economy fares from $752 as of today, November 16, 2023. These prices include all taxes and fees, and availability may vary based on routing—book quickly for travel in 2024/2025. Advance seat assignment is included with the $752 fare, allowing for a standard-size carry-on.

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