BLL - SEA

$600 Find Cheap Flights from Billund to Seattle - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$600
Typical prices: $606-$937
British Airways
Sun 12/2Thu 12/6
BLL - SEA • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Billund and Seattle. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
12 weeks
in advance
Our data shows that travelers who book at least 12 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
When to travel
December
Cheapest • 25% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Reykjavik Keflavik Intl (KEF)
Cheapest • Avg $505 (round-trip)
Kastrup Copenhagen (CPH)
Shortest trip • 13h 23m (one-way)
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Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Billund to Seattle (BLL-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Billund to Seattle

Wed, Dec 2 - Sun, Dec 6
British Airways Logo
9:00 pm - 11:25 amBLL  Billund-SEA Seattle/Tacoma Intl
23h 25m1 stop London Heathrow
British Airways Logo
6:45 pm - 8:05 pmSEA  Seattle/Tacoma Intl-BLL Billund
16h 20m1 stop London Heathrow
$600British Airways
Wed, Dec 2 - Sun, Dec 6
British Airways Logo
9:00 pm - 11:25 amBLL  Billund-SEA Seattle/Tacoma Intl
23h 25m1 stop London Heathrow
British Airways Logo
6:14 am - 8:05 pmSEA  Seattle/Tacoma Intl-BLL Billund
28h 51m2 stops Chicago O'Hare Intl London Heathrow
$601British Airways
Wed, Dec 2 - Sun, Dec 6
British Airways Logo
1:05 pm - 12:32 amBLL  Billund-SEA Seattle/Tacoma Intl
20h 27m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
6:14 am - 11:20 amSEA  Seattle/Tacoma Intl-BLL Billund
20h 06m2 stops Chicago O'Hare Intl London Heathrow
$606British Airways
Wed, Dec 2 - Sun, Dec 6
British Airways Logo
1:05 pm - 12:32 amBLL  Billund-SEA Seattle/Tacoma Intl
20h 27m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
6:14 am - 11:20 amSEA  Seattle/Tacoma Intl-BLL Billund
20h 06m2 stops Chicago O'Hare Intl London Heathrow
$607British Airways
Thu, Sep 24 - Mon, Sep 28
Delta Logo
6:00 am - 11:47 amBLL  Billund-SEA Seattle/Tacoma Intl
14h 47m1 stop Amsterdam Schiphol
Delta Logo
7:15 am - 11:20 amSEA  Seattle/Tacoma Intl-BLL Billund
19h 05m2 stops Chicago O'Hare Intl Paris Charles de Gaulle
$630Delta
Thu, Sep 24 - Mon, Sep 28
Delta Logo
6:00 am - 4:30 pmBLL  Billund-SEA Seattle/Tacoma Intl
19h 30m2 stops Amsterdam Schiphol San Francisco
Delta Logo
7:15 am - 11:20 amSEA  Seattle/Tacoma Intl-BLL Billund
19h 05m2 stops Chicago O'Hare Intl Paris Charles de Gaulle
$638Delta
Wed, Sep 23 - Wed, Sep 30
United Airlines Logo
6:00 am - 11:55 amBLL  Billund-SEA Seattle/Tacoma Intl
14h 55m1 stop Frankfurt am Main
United Airlines Logo
7:00 am - 5:50 pmSEA  Seattle/Tacoma Intl-BLL Billund
25h 50m2 stops Chicago O'Hare Intl Frankfurt am Main
$733United Airlines
Wed, Dec 2 - Sun, Dec 6
United Airlines Logo
6:35 am - 11:13 pmBLL  Billund-SEA Seattle/Tacoma Intl
25h 38m2 stops Frankfurt am Main San Francisco
United Airlines Logo
6:15 am - 6:20 pmSEA  Seattle/Tacoma Intl-BLL Billund
27h 05m3 stops Los Angeles Las Vegas Harry Reid Intl Frankfurt am Main
$739United Airlines
Wed, Dec 2 - Sun, Dec 6
United Airlines Logo
6:35 am - 9:59 amBLL  Billund-SEA Seattle/Tacoma Intl
36h 24m2 stops Frankfurt am Main Denver Intl
United Airlines Logo
12:46 pm - 9:50 amSEA  Seattle/Tacoma Intl-BLL Billund
36h 04m3 stops Denver Intl Chicago O'Hare Intl Frankfurt am Main
$740United Airlines
Tue, Sep 8 - Sat, Sep 12
Lufthansa Logo
6:05 am - 11:55 amBLL  Billund-SEA Seattle/Tacoma Intl
14h 50m1 stop Frankfurt am Main
Lufthansa Logo
6:50 pm - 11:35 pmSEA  Seattle/Tacoma Intl-BLL Billund
19h 45m2 stops Munich Franz Josef Strauss Frankfurt am Main
$767Lufthansa
Booking Insights

Price, demand and travel trends for Billund to Seattle flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Billund to Seattle with more confidence.

How much is a round-trip flight from Billund to Seattle?

Round-trip flights from Billund to Seattle start at $600. Prices are below average for this route right now, with typical round-trip fares ranging from $606 to $937. The lowest price found in the past 5 days was $600 on British Airways.

What's the cheapest day of the week to fly from Billund to Seattle?

Monday is the cheapest day of the week to fly from Billund to Seattle, it is 27% cheaper than the average day. Sunday is the most expensive day with flight prices 13% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Billund to Seattle?

  • December is the cheapest month to fly from Billund to Seattle at $575 round-trip.
  • July ($945) and March ($863) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 64% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Billund to Seattle the cheapest?

Flights from Billund to Seattle are cheapest 12 weeks before departure. Booking in this window typically costs about 41% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Billund to Seattle flights

Low season

February

Cheapest flight

$600
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Billund to Seattle

When to book flights from Billund to Seattle

Are your dates flexible? Find out the best times to travel from Billund to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Billund to Seattle flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Billund to Seattle?

    Flights from Billund to Seattle usually depart from Billund (BLL) and arrive at Seattle/Tacoma Intl (SEA).

  • What cabin classes can I book on flights from Billund to Seattle?

    Two cabin classes are available on flights from Billund to Seattle:

    • Economy Class
    • Business Class

  • Which airports do connecting flights from Billund to Seattle pass through?

    One-stop flights from Billund to Seattle most commonly connect through:

    • Amsterdam Schiphol (AMS) - 39% of one-stop connections
    • Frankfurt am Main (FRA) - 36% of one-stop connections
    • Paris Charles de Gaulle (CDG) - 11% of one-stop connections
    • London Heathrow (LHR) - 9% of one-stop connections

    Amsterdam Schiphol (AMS) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Billund to Seattle?

    Yes. Being flexible with your travel dates can save you up to 36% on the Billund to Seattle route. Monday is the cheapest departure day at $559 round-trip on average, while Sunday is the most expensive at $869, a difference of $310. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pike Place Market, Pier 66 and Lumen Field. These are among the most viewed places in Seattle on KAYAK.

  • How expensive are last-minute Billund to Seattle flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 30% above the route average of $763. Book 12 weeks before departure for the lowest fares.

  • How long is a flight from Billund to Seattle?

    A nonstop flight from Billund to Seattle takes 0h 00m, covering 4,771 miles.

  • Do I need a passport to fly from Billund to Seattle?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much time can I save by choosing a different layover airport from Billund to Seattle?

    Flying via Reykjavik Keflavik Intl (KEF) gives the shortest average 1-stop total travel time at 12h 19m, compared with 13h 23m via Kastrup Copenhagen (CPH) and 13h 49m via Paris Charles de Gaulle (CDG).

  • What is the time difference between Billund and Seattle?

    Seattle is 9 hours behind Billund (Pacific Time vs Central European Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:
    · Fox
    · Europcar
    · Thrifty
    · Budget
    · Dollar

  • How much should I expect to pay for a Billund to Seattle flight?

    Round-trip flights from Billund to Seattle range from $606 to $937, with an average of $763 over the past 12 months. Anything below $606 counts as a good deal.

Your guide to booking Billund to Seattle flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Sunday. On this route, Monday flights average $559 - about $310 less than Sunday (36% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 12 weeks before you fly. On this route, that window historically saves about 41% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Billund to Seattle trip for December. Fares historically average $575 round-trip in that month - typically $370 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.
    - Seattle Airport Marriott
    - Coast Gateway Hotel
    - Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

Everything you need to know for your flight from Billund to Seattle

Information on your arrival and departure airports

Billund (BLL)
Seattle (SEA)