$299+ Cheap flights from Seattle (SEA) to Belgium
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
May 23 — May 301
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Belgium with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Seattle to BelgiumExplore the most affordable flight options available from Seattle to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.
Explore the most affordable flight options available from Seattle to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.
This Gotogate deal was found by Cheapflights users on 4/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Thu 12/1012:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 4/22![Icelandair logo]()
$584
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/19![Icelandair logo]()
$619
This KAYAK deal was found by Cheapflights users on 4/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/19![Icelandair logo]()
$622
This KAYAK deal was found by Cheapflights users on 4/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/19![Icelandair logo]()
$640
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/19![Icelandair logo]()
$641
This Gotogate deal was found by Cheapflights users on 4/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/20![Icelandair logo]()
$644
This oojo deal was found by Cheapflights users on 4/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/2912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 4/20![Icelandair logo]()
$648
This Gotogate deal was found by Cheapflights users on 4/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/20![Icelandair logo]()
$656
This oojo deal was found by Cheapflights users on 4/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 10/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/21![Icelandair logo]()
$657
This Mytrip deal was found by Cheapflights users on 4/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Tue 9/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/20![Icelandair logo]()
$659
This Justfly.com deal was found by Cheapflights users on 4/18. 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.
Tue 9/223:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 10/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/18![Icelandair logo]()
$660
This Gotogate deal was found by Cheapflights users on 4/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/20![Icelandair logo]()
$661
Best flights from Seattle to BelgiumDiscover carefully curated flight deals from Seattle to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 23, 2026.
Discover carefully curated flight deals from Seattle to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 23, 2026.
This Icelandair deal was found by Cheapflights users on 4/22. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/22![Icelandair logo]()
$675
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Sun 10/1810:30 am
SEA
- BRU
2 stops37h 25m
United Airlines
Thu 10/297:00 am
BRU
- SEA
1 stop14h 10m
United Airlines
Deal found 4/21![United Airlines logo]()
$778
This Finnair deal was found by Cheapflights users on 4/19. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:40 am
SEA
- BRU
2 stops25h 40m
Finnair
Wed 9/96:30 am
BRU
- SEA
2 stops21h 19m
Finnair
Deal found 4/19![Finnair logo]()
$797
This Mytrip deal was found by Cheapflights users on 4/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1110:45 am
SEA
- CRL
3 stops24h 50m
Multiple Airlines
Tue 5/199:00 pm
CRL
- SEA
3 stops30h 30m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$924
This Scandinavian Airlines deal was found by Cheapflights users on 4/21. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/192:30 pm
SEA
- BRU
2 stops19h 00m
Scandinavian Airlines
Sun 8/3010:20 am
BRU
- SEA
2 stops20h 57m
Scandinavian Airlines
Deal found 4/21![Scandinavian Airlines logo]()
$980
This Delta deal was found by Cheapflights users on 4/22. 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 6/1911:59 pm
SEA
- BRU
1 stop22h 41m
Delta
Sat 7/410:25 am
BRU
- SEA
2 stops19h 10m
Delta
Deal found 4/22![Delta logo]()
$1,294
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Sat 8/225:00 pm
SEA
- BRU
1 stop31h 00m
United Airlines
Mon 8/3110:30 am
BRU
- SEA
1 stop34h 25m
United Airlines
Deal found 4/19![United Airlines logo]()
$923
This Mytrip deal was found by Cheapflights users on 4/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Mon 8/249:15 pm
CRL
- SEA
3 stops32h 45m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$961
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:00 pm
SEA
- CRL
2 stops17h 15m
Multiple Airlines
Wed 6/179:20 am
CRL
- SEA
1 stop16h 50m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$971
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Mon 5/1810:45 am
SEA
- BRU
2 stops24h 15m
United Airlines
Mon 6/159:55 am
BRU
- SEA
1 stop20h 13m
United Airlines
Deal found 4/20![United Airlines logo]()
$982
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Mon 6/110:45 am
SEA
- BRU
2 stops24h 15m
United Airlines
Tue 6/169:55 am
BRU
- SEA
1 stop20h 13m
United Airlines
Deal found 4/19![United Airlines logo]()
$1,044
This Mytrip deal was found by Cheapflights users on 4/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/33:40 pm
SEA
- CRL
2 stops22h 15m
Multiple Airlines
Thu 5/77:45 am
CRL
- SEA
3 stops44h 00m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$1,111
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Tue 6/210:45 am
SEA
- BRU
2 stops24h 15m
United Airlines
Tue 6/169:55 am
BRU
- SEA
1 stop20h 13m
United Airlines
Deal found 4/19![United Airlines logo]()
$1,044
This Mytrip deal was found by Cheapflights users on 4/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Tue 9/86:55 am
CRL
- SEA
2 stops19h 15m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$1,130
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Mon 6/110:45 am
SEA
- BRU
2 stops24h 15m
United Airlines
Fri 6/1912:00 pm
BRU
- SEA
1 stop17h 46m
United Airlines
Deal found 4/19![United Airlines logo]()
$1,045
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:10 pm
SEA
- CRL
1 stop28h 30m
Multiple Airlines
Sat 6/208:25 am
CRL
- SEA
2 stops21h 35m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,207
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Tue 6/23:40 pm
SEA
- BRU
2 stops19h 20m
United Airlines
Sat 6/209:55 am
BRU
- SEA
1 stop20h 12m
United Airlines
Deal found 4/19![United Airlines logo]()
$1,118
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/195:40 pm
SEA
- CRL
1 stop19h 55m
Multiple Airlines
Sun 8/26:55 pm
CRL
- SEA
2 stops31h 20m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,213
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Fri 6/57:40 am
SEA
- BRU
1 stop14h 35m
United Airlines
Fri 6/1212:00 pm
BRU
- SEA
1 stop17h 46m
United Airlines
Deal found 4/21![United Airlines logo]()
$1,123
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/195:40 pm
SEA
- CRL
1 stop19h 55m
Multiple Airlines
Sat 8/17:20 pm
CRL
- SEA
2 stops27h 20m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,225
This Mytrip deal was found by Cheapflights users on 4/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:10 pm
SEA
- CRL
2 stops18h 05m
Multiple Airlines
Wed 9/99:20 am
CRL
- SEA
1 stop16h 50m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$1,238
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated April 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Thu 5/76:55 pm
BRU
- SEA
1 stop31h 20m
Turkish Airlines
Deal found 4/19![Turkish Airlines logo]()
$703
This KAYAK deal was found by Cheapflights users on 4/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/19![Icelandair logo]()
$640
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/19![Icelandair logo]()
$641
This deal was found by Cheapflights users on 4/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:20 pm
SEA
- BRU
1 stop14h 35m
British Airways
Wed 5/611:00 am
BRU
- SEA
1 stop16h 25m
British Airways
Deal found 4/19![British Airways logo]()
$692
This deal was found by Cheapflights users on 4/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:20 pm
SEA
- BRU
1 stop14h 35m
British Airways
Tue 5/510:55 am
BRU
- SEA
1 stop16h 30m
British Airways
Deal found 4/21![British Airways logo]()
$719
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/19![Icelandair logo]()
$619
This KAYAK deal was found by Cheapflights users on 4/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/19![Icelandair logo]()
$622
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/281:30 pm
SEA
- CRL
3 stops24h 25m
Multiple Airlines
Wed 5/69:20 am
CRL
- SEA
3 stops33h 20m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$828
This Mytrip deal was found by Cheapflights users on 4/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 pm
SEA
- CRL
3 stops18h 55m
Multiple Airlines
Tue 5/510:00 pm
CRL
- SEA
3 stops32h 08m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$881
This Mytrip deal was found by Cheapflights users on 4/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/283:40 pm
SEA
- CRL
3 stops22h 15m
Multiple Airlines
Thu 5/76:35 am
CRL
- SEA
2 stops18h 25m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$917
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/22![Icelandair logo]()
$702
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:00 pm
SEA
- BRU
1 stop32h 55m
Multiple Airlines
Tue 5/197:45 pm
BRU
- SEA
2 stops32h 00m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$710
One-way flights from Seattle to BelgiumSearch for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This Mytrip deal was found by Cheapflights users on 4/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 4/20![Icelandair logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:00 pm
SEA
- BRU
2 stops36h 40m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$303
This oojo deal was found by Cheapflights users on 4/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 4/21![Icelandair logo]()
$306
This Mytrip deal was found by Cheapflights users on 4/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:00 pm
SEA
- CRL
2 stops17h 15m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/111:25 pm
SEA
- CRL
2 stops36h 50m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$316
This Trip.com deal was found by Cheapflights users on 4/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 4/19![Icelandair logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:00 pm
SEA
- BRU
3 stops29h 05m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/111:25 pm
SEA
- BRU
3 stops48h 40m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 pm
SEA
- BRU
2 stops30h 15m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$355
This Cheapflightsfares deal was found by Cheapflights users on 4/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:20 pm
SEA
- BRU
1 stop15h 05m
British Airways
Deal found 4/20![British Airways logo]()
$357
This oojo deal was found by Cheapflights users on 4/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:24 am
SEA
- BRU
2 stops23h 01m
British Airways
Deal found 4/20![British Airways logo]()
$358
Find flight deals from Seattle to Belgium
Keep the following information in mind while searching for Seattle to Belgium flight deals. Data was last updated April 23, 2026.
Round-trip from | $619 (Gotogate) |
|---|---|
One-way from | $299 (Mytrip) |
Popular in | December |
Cheapest in | January |
Average price | $570 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Belgium 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 April 23, 2026.
Use the filters below to find and compare flights from Seattle to Belgium that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/11
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Thu 10/15
1:50 pm-5:55 pm
1 stop13h 05m
$675
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/18
10:30 am-8:55 am
2 stops37h 25m
Brussels Bruxelles-National
Thu 10/29
7:00 am-1:10 pm
1 stop14h 10m
$778
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 8/26
7:40 am-6:20 pm
2 stops25h 40m
Brussels Bruxelles-National
Wed 9/9
6:30 am-6:49 pm
2 stops21h 19m
$797
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 8/22
5:00 pm-9:00 am
1 stop31h 00m
Brussels Bruxelles-National
Mon 8/31
10:30 am-11:55 am
1 stop34h 25m
$923
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Mon 5/11
10:45 am-8:35 pm
3 stops24h 50m
Charleroi Brussels
Tue 5/19
9:00 pm-6:30 pm
3 stops30h 30m
$924
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Mon 8/17
3:40 pm-8:35 pm
2 stops19h 55m
Charleroi Brussels
Mon 8/24
9:15 pm-9:00 pm
3 stops32h 45m
$961
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 6/2
7:00 pm-9:15 pm
2 stops17h 15m
Charleroi Brussels
Wed 6/17
9:20 am-5:10 pm
1 stop16h 50m
$971
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 8/19
2:30 pm-6:30 pm
2 stops19h 00m
Brussels Bruxelles-National
Sun 8/30
10:20 am-10:17 pm
2 stops20h 57m
$980
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 5/18
10:45 am-8:00 pm
2 stops24h 15m
Brussels Bruxelles-National
Mon 6/15
9:55 am-9:08 pm
1 stop20h 13m
$982
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 6/1
10:45 am-8:00 pm
2 stops24h 15m
Brussels Bruxelles-National
Tue 6/16
9:55 am-9:08 pm
1 stop20h 13m
$1,044
Showing 1-10 of 37 resultsSorted by cheapest first
Best time to book a flight from Seattle to Belgium
Have a flexible travel schedule? Discover the best time to fly to Belgium from Seattle with our price prediction graph.
SEA-BRU
SEA-CRL
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 Belgium
SEA-BE0
SEA-BRU
SEA-CRL
How far ahead should I book a flight from Seattle to Belgium?
Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Belgium. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to Belgium?
Currently, August is the cheapest month in which you can book a flight from Seattle to Belgium (average of $219). Flying from Seattle to Belgium in June is currently the most expensive (average of $439). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Belgium
Get insights into the airlines that provide service to Belgium. 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 Belgium. Reviews last updated April 23, 2026.
Peruse reviews from past customers who have flown with Delta,KLM, andUnited Airlines from Seattle to Belgium 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.
Entertainment
7.8
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Seattle to Belgium. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Belgium
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Belgium by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Belgium by cabin class
Find flights from Seattle to Belgium, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Belgium flights
Browse other Seattle and Belgium flight options. Last updated on April 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from Seattle to Belgium
Discover the top 8 airlines that operate flights from Seattle to Belgium. 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 April 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$382 | Average$485 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$686 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$745 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$719 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$623 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$488 | Average$491 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$494 | Average$654 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$518 | Average$680 | FlexibilityNo cancel fee | On-time67% |