$497+ Cheap flights from Seattle (SEA) to Billund (BLL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BLL
Sep 16 — Sep 231
Round-trip
1 adult, Economy
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Cheapest
Best
Last-minute
Cheapest flights from Seattle to BillundExplore the most affordable flight options available from Seattle to Billund. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 17, 2026.
Explore the most affordable flight options available from Seattle to Billund. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 17, 2026.
This KLM deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:40 pm -
1 stop18h 45m
Mon 8/316:00 am -
1 stop19h 27m
Deal found 8/15![Multiple Airlines logo]()
$497
This Justfly.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:25 pm -
1 stop13h 10m
Fri 8/2810:35 pm -
1 stop22h 10m
Deal found 8/15![Icelandair logo]()
$502
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:15 am -
2 stops18h 10m
Tue 10/206:40 am -
1 stop20h 07m
Deal found 8/14![Delta logo]()
$503
This Air France deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/221:50 pm -
1 stop12h 05m
Thu 8/276:00 am -
1 stop14h 37m
Deal found 8/15![Air France logo]()
$509
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:50 pm -
1 stop14h 40m
Mon 8/316:00 am -
2 stops19h 13m
Deal found 8/15![Delta logo]()
$519
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:15 am -
2 stops17h 20m
Tue 9/111:45 am -
2 stops19h 20m
Deal found 8/15![Delta logo]()
$523
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:35 pm -
1 stop14h 10m
Sat 12/126:00 am -
2 stops26h 00m
Deal found 8/13![Delta logo]()
$544
This KLM deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/231:30 pm -
1 stop12h 50m
Thu 9/36:00 am -
1 stop14h 47m
Deal found 8/13![Multiple Airlines logo]()
$554
This KLM deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:40 pm -
1 stop18h 45m
Tue 9/16:00 am -
1 stop14h 47m
Deal found 8/15![Multiple Airlines logo]()
$562
This Air France deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:45 pm -
1 stop15h 10m
Tue 9/111:45 am -
1 stop13h 50m
Deal found 8/15![Multiple Airlines logo]()
$574
Best flights from Seattle to BillundDiscover carefully curated flight deals from Seattle to Billund that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 17, 2026.
Discover carefully curated flight deals from Seattle to Billund that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 17, 2026.
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:15 am -
2 stops18h 10m
Tue 10/206:40 am -
1 stop20h 07m
Deal found 8/14![Delta logo]()
$503
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:50 pm -
1 stop19h 30m
Sat 12/56:35 am -
1 stop14h 25m
Deal found 8/16![United Airlines logo]()
$758
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:35 pm -
1 stop18h 25m
Sun 12/136:00 am -
2 stops26h 00m
Deal found 8/13![Delta logo]()
$544
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:35 pm -
1 stop14h 10m
Sat 12/1210:30 am -
2 stops19h 08m
Deal found 8/16![Delta logo]()
$544
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/271:50 pm -
1 stop14h 40m
Thu 10/16:00 am -
2 stops19h 35m
Deal found 8/17![Delta logo]()
$635
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:18 am -
2 stops21h 37m
Fri 9/46:00 am -
1 stop14h 47m
Deal found 8/15![Delta logo]()
$713
Last-minute flights from Seattle to BillundDiscover last-minute flight deals from Seattle to Billund. Data last updated August 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Billund. Data last updated August 17, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:25 pm -
1 stop13h 10m
Fri 8/2810:35 pm -
1 stop22h 10m
Deal found 8/15![Icelandair logo]()
$502
This Air France deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/201:30 pm -
1 stop12h 50m
Sat 8/296:00 am -
1 stop19h 27m
Deal found 8/15![Air France logo]()
$619
This Air France deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/211:50 pm -
1 stop12h 05m
Thu 8/276:00 am -
1 stop14h 37m
Deal found 8/15![Air France logo]()
$586
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/211:50 pm -
1 stop12h 05m
Thu 8/276:00 am -
2 stops17h 00m
Deal found 8/15![Delta logo]()
$628
This Air France deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/221:50 pm -
1 stop12h 05m
Thu 8/276:00 am -
1 stop14h 37m
Deal found 8/15![Air France logo]()
$509
This KLM deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:40 pm -
1 stop18h 45m
Mon 8/316:00 am -
1 stop19h 27m
Deal found 8/15![Multiple Airlines logo]()
$497
This KLM deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/231:30 pm -
1 stop12h 50m
Thu 9/36:00 am -
1 stop14h 47m
Deal found 8/13![Multiple Airlines logo]()
$554
This KLM deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:40 pm -
1 stop18h 45m
Tue 9/16:00 am -
1 stop14h 47m
Deal found 8/15![Multiple Airlines logo]()
$562
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:50 pm -
1 stop14h 40m
Mon 8/316:00 am -
2 stops19h 13m
Deal found 8/15![Delta logo]()
$519
This Air France deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:45 pm -
1 stop15h 10m
Tue 9/111:45 am -
1 stop13h 50m
Deal found 8/15![Multiple Airlines logo]()
$574
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:15 am -
2 stops17h 20m
Tue 9/111:45 am -
2 stops19h 20m
Deal found 8/15![Delta logo]()
$523
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:45 pm -
1 stop15h 10m
Thu 10/111:45 am -
1 stop13h 50m
Deal found 8/17![Delta logo]()
$615
Find flight deals from Seattle to Billund
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Billund (BLL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $502 (Delta) |
Popular in | September |
Cheapest in | February |
Average price | $698 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Billund that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 17, 2026.
Use the filters below to find and compare flights from Seattle to Billund that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBillund
SEA Seattle/Tacoma Intl - BLL Billund
SEABLL
Seattle/Tacoma Intl
Tue 10/6
7:15 am-10:25 am
2 stops18h 10m
Billund
Tue 10/20
6:40 am-5:47 pm
1 stop20h 07m
$503
SeattleBillund
SEA Seattle/Tacoma Intl - BLL Billund
SEABLL
Seattle/Tacoma Intl
Fri 12/4
2:35 pm-6:00 pm
1 stop18h 25m
Billund
Sun 12/13
6:00 am-11:00 pm
2 stops26h 00m
$544
Quickest round-trip
SeattleBillund
SEA Seattle/Tacoma Intl - BLL Billund
SEABLL
Seattle/Tacoma Intl
Fri 12/4
2:35 pm-1:45 pm
1 stop14h 10m
Billund
Sat 12/12
10:30 am-8:38 pm
2 stops19h 08m
$544
SeattleBillund
SEA Seattle/Tacoma Intl - BLL Billund
SEABLL
Seattle/Tacoma Intl
Sun 9/27
1:50 pm-1:30 pm
1 stop14h 40m
Billund
Thu 10/1
6:00 am-4:35 pm
2 stops19h 35m
$635
SeattleBillund
SEA Seattle/Tacoma Intl - BLL Billund
SEABLL
Seattle/Tacoma Intl
Mon 8/31
11:18 am-5:55 pm
2 stops21h 37m
Billund
Fri 9/4
6:00 am-11:47 am
1 stop14h 47m
$713
SeattleBillund
SEA Seattle/Tacoma Intl - BLL Billund
SEABLL
Seattle/Tacoma Intl
Wed 12/2
1:50 pm-6:20 pm
1 stop19h 30m
Billund
Sat 12/5
6:35 am-12:00 pm
1 stop14h 25m
$758
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Seattle-Billund flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Billund flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Billund flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Billund flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Billund flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Billund
Have a flexible travel schedule? Discover the best time to fly to Billund from Seattle with our price prediction graph.
SEA-BLL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Billund
Reviews of airlines servicing Billund
Get insights into the airlines that provide service to Billund. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Billund. Reviews last updated August 17, 2026.
Peruse reviews from past customers who have flown with Delta and Air France from Seattle to Billund to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Food
7.2
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Food
7.2
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Food
7.2
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Billund. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Billund?
Book flights to Billund if you plan to visit one of these locationsVejle
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Seattle and Billund flights
Browse other Seattle and Billund flight options. Last updated on August 17, 2026.
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Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on August 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Seattle to Billund
Discover the top 2 airlines that operate flights from Seattle to Billund. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$473 | Average$677 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$500 | Average$648 | FlexibilityNo cancel fee | On-time77% |