Seattle (SEA) to Billund (BLL) flights from USD545

*Modifying this information may result in a different fare

*All amounts are in USD. Taxes and surcharges are included. No booking fee is applicable. Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional baggage fees may apply.

Why book directly on the KLM website?

Explore the benefits of booking through our website.

No hidden costs icon

No hidden costs

Book with confidence. Our rates hide no unpleasant surprises.

24/7 customer service icon

24/7 customer service

Count on direct, personal support whenever you need it, day or night.

Seamless travel icon

Seamless travel

Enjoy a smooth journey with timely updates and automatic rebooking.

Lowest fares between Seattle and Billund

cmp-daily-histogram-bars-legend-min-price-aria-label USD545
cmp-daily-histogram-bars-legend-max-price-aria-label USD947
Displaying fares for October-2026
  • SEA–BLL, 10/06/2026 – 11/03/2026: From USD617
    06

    Tu

    OCT

  • SEA–BLL, 10/07/2026 – 11/04/2026: From USD628
    07

    We

  • SEA–BLL, 10/08/2026 – 11/05/2026: From USD601
    08

    Th

  • SEA–BLL, 10/09/2026 – 11/06/2026: From USD601
    09

    Fr

  • SEA–BLL, 10/10/2026 – 11/07/2026: From USD590
    10

    Sa

  • SEA–BLL, 10/11/2026 – 11/08/2026: From USD590
    11

    Su

  • SEA–BLL, 10/12/2026 – 11/09/2026: From USD617
    12

    Mo

  • SEA–BLL, 10/13/2026 – 11/03/2026: From USD628
    13

    Tu

  • SEA–BLL, 10/14/2026 – 11/11/2026: From USD796
    14

    We

  • SEA–BLL, 10/15/2026 – 11/05/2026: From USD769
    15

    Th

  • SEA–BLL, 10/16/2026 – 11/06/2026: From USD876
    16

    Fr

  • SEA–BLL, 10/17/2026 – 11/14/2026: From USD802
    17

    Sa

  • SEA–BLL, 10/18/2026 – 11/08/2026: From USD601
    18

    Su

  • SEA–BLL, 10/19/2026 – 11/16/2026: From USD610
    19

    Mo

  • SEA–BLL, 10/20/2026 – 11/03/2026: From USD610
    20

    Tu

  • SEA–BLL, 10/21/2026 – 11/18/2026: From USD610
    21

    We

  • SEA–BLL, 10/22/2026 – 11/12/2026: From USD633
    22

    Th

  • SEA–BLL, 10/23/2026 – 11/13/2026: From USD601
    23

    Fr

  • SEA–BLL, 10/24/2026 – 11/07/2026: From USD811
    24

    Sa

  • SEA–BLL, 10/25/2026 – 11/22/2026: From USD802
    25

    Su

  • SEA–BLL, 10/26/2026 – 11/16/2026: From USD599
    26

    Mo

  • SEA–BLL, 10/27/2026 – 11/10/2026: From USD615
    27

    Tu

  • SEA–BLL, 10/28/2026 – 11/04/2026: From USD610
    28

    We

  • SEA–BLL, 10/29/2026 – 11/12/2026: From USD633
    29

    Th

  • SEA–BLL, 10/30/2026 – 11/06/2026: From USD893
    30

    Fr

  • SEA–BLL, 10/31/2026 – 11/03/2026: From USD561
    31

    Sa

  • SEA–BLL, 11/01/2026 – 11/08/2026: From USD947
    01

    Su

    NOV

  • SEA–BLL, 11/02/2026 – 11/05/2026: From USD545
    02

    Mo

  • SEA–BLL, 11/03/2026 – 11/06/2026: From USD545
    03

    Tu

  • SEA–BLL, 11/04/2026 – 11/07/2026: From USD545
    04

    We

  • SEA–BLL, 11/05/2026 – 11/12/2026: From USD545
    05

    Th

  • RangeUSD545-USD947