$251+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Apr 21 — Apr 281
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Belgium with Cheapflights
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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 March 22, 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 March 22, 2026.
This oojo deal was found by Cheapflights users on 3/21. 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.
Thu 4/163:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 4/231:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/21![Icelandair logo]()
$536
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/11:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/19![Icelandair logo]()
$567
This KAYAK deal was found by Cheapflights users on 3/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 5/61:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/20![Icelandair logo]()
$571
This KAYAK deal was found by Cheapflights users on 3/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 5/61:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/20![Icelandair logo]()
$572
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Wed 4/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 4/301:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/20![Icelandair logo]()
$581
This oojo deal was found by Cheapflights users on 3/20. 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 5/47:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 5/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/20![Icelandair logo]()
$583
This oojo deal was found by Cheapflights users on 3/20. 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 5/47:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 5/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/20![Icelandair logo]()
$606
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 5/97:00 pm
SEA
- BRU
1 stop32h 55m
Multiple Airlines
Tue 5/197:45 pm
BRU
- SEA
2 stops32h 00m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$613
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Wed 6/39:20 am
CRL
- SEA
1 stop16h 50m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$848
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 5/47:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Mon 5/1810:00 pm
CRL
- SEA
2 stops29h 45m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$864
This Mytrip deal was found by Cheapflights users on 3/20. 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.
Thu 4/167:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Thu 4/237:05 am
CRL
- SEA
2 stops22h 35m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$867
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/167:00 pm
SEA
- CRL
2 stops29h 25m
Multiple Airlines
Fri 5/19:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$870
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 March 22, 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 March 22, 2026.
This United Airlines deal was found by Cheapflights users on 3/21. 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.
Tue 5/57:20 pm
SEA
- BRU
2 stops39h 40m
United Airlines
Tue 5/128:30 am
BRU
- SEA
1 stop12h 50m
United Airlines
Deal found 3/21![United Airlines logo]()
$665
This Delta deal was found by Cheapflights users on 3/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:35 pm
SEA
- BRU
1 stop23h 05m
Delta
Thu 9/1010:25 am
BRU
- SEA
1 stop15h 10m
Delta
Deal found 3/21![Delta logo]()
$735
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Wed 6/39:20 am
CRL
- SEA
1 stop16h 50m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$848
This United Airlines deal was found by Cheapflights users on 3/21. 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 5/1510:41 pm
SEA
- BRU
1 stop23h 34m
United Airlines
Mon 5/252:25 pm
BRU
- SEA
1 stop30h 55m
United Airlines
Deal found 3/21![United Airlines logo]()
$810
This Mytrip deal was found by Cheapflights users on 3/20. 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.
Thu 4/167:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Thu 4/237:05 am
CRL
- SEA
2 stops22h 35m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$867
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/167:00 pm
SEA
- CRL
2 stops29h 25m
Multiple Airlines
Fri 5/19:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$870
This United Airlines deal was found by Cheapflights users on 3/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:54 pm
SEA
- BRU
2 stops15h 21m
United Airlines
Wed 5/278:30 am
BRU
- SEA
1 stop12h 50m
United Airlines
Deal found 3/17![United Airlines logo]()
$875
This United Airlines deal was found by Cheapflights users on 3/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:54 pm
SEA
- BRU
2 stops15h 21m
United Airlines
Tue 5/268:30 am
BRU
- SEA
1 stop12h 50m
United Airlines
Deal found 3/17![United Airlines logo]()
$875
This Mytrip deal was found by Cheapflights users on 3/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:40 pm
SEA
- CRL
2 stops14h 50m
Multiple Airlines
Tue 5/267:55 am
CRL
- SEA
2 stops16h 45m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$939
This United Airlines deal was found by Cheapflights users on 3/20. 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 5/182:55 pm
SEA
- BRU
2 stops20h 05m
United Airlines
Mon 6/1510:30 am
BRU
- SEA
1 stop34h 50m
United Airlines
Deal found 3/20![United Airlines logo]()
$882
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Thu 4/307:00 pm
SEA
- CRL
2 stops29h 25m
Multiple Airlines
Mon 5/1810:00 pm
CRL
- SEA
1 stop28h 10m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$981
This United Airlines deal was found by Cheapflights users on 3/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:54 pm
SEA
- BRU
2 stops15h 21m
United Airlines
Mon 5/252:25 pm
BRU
- SEA
1 stop30h 55m
United Airlines
Deal found 3/17![United Airlines logo]()
$895
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Mon 5/117:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Thu 5/217:05 am
CRL
- SEA
2 stops22h 35m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$1,047
This United Airlines deal was found by Cheapflights users on 3/21. 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 7/3111:52 pm
SEA
- BRU
2 stops22h 33m
United Airlines
Sun 8/168:30 am
BRU
- SEA
2 stops34h 05m
United Airlines
Deal found 3/21![United Airlines logo]()
$986
This United Airlines deal was found by Cheapflights users on 3/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/157:25 am
SEA
- BRU
2 stops20h 50m
United Airlines
Sat 5/307:00 am
BRU
- SEA
2 stops20h 30m
United Airlines
Deal found 3/18![United Airlines logo]()
$1,040
This Mytrip deal was found by Cheapflights users on 3/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:00 am
SEA
- CRL
2 stops27h 40m
Multiple Airlines
Sun 4/263:45 pm
CRL
- SEA
2 stops29h 35m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$1,152
This United Airlines deal was found by Cheapflights users on 3/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/168:10 am
SEA
- BRU
1 stop14h 05m
United Airlines
Sun 5/3112:45 pm
BRU
- SEA
1 stop13h 14m
United Airlines
Deal found 3/18![United Airlines logo]()
$1,042
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Tue 7/77:15 pm
CRL
- SEA
2 stops27h 25m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$1,190
This Mytrip deal was found by Cheapflights users on 3/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:30 am
SEA
- CRL
3 stops20h 00m
Multiple Airlines
Mon 5/2510:00 pm
CRL
- SEA
2 stops32h 08m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$1,194
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/217:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Sun 7/57:00 am
CRL
- SEA
2 stops36h 40m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$1,240
This Mytrip deal was found by Cheapflights users on 3/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:40 am
SEA
- CRL
3 stops24h 55m
Multiple Airlines
Sun 8/95:25 pm
CRL
- SEA
2 stops26h 15m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$1,304
This Mytrip deal was found by Cheapflights users on 3/19. 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.
Fri 4/35:40 am
SEA
- CRL
3 stops32h 15m
Multiple Airlines
Wed 4/85:35 pm
CRL
- SEA
3 stops34h 45m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$1,356
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated March 22, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated March 22, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 3/22. 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.
Sun 4/128:00 am
SEA
- CRL
3 stops27h 50m
Multiple Airlines
Fri 4/178:50 am
CRL
- SEA
3 stops33h 45m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$882
This oojo deal was found by Cheapflights users on 3/21. 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.
Thu 4/163:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 4/231:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/21![Icelandair logo]()
$536
This KAYAK deal was found by Cheapflights users on 3/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 5/61:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/20![Icelandair logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/163:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 4/301:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/20![Icelandair logo]()
$614
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/163:40 pm
SEA
- BRU
1 stop12h 15m
Multiple Airlines
Tue 5/55:35 pm
BRU
- SEA
2 stops49h 05m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$618
This Mytrip deal was found by Cheapflights users on 3/20. 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.
Thu 4/167:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Thu 4/237:05 am
CRL
- SEA
2 stops22h 35m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$867
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/167:00 pm
SEA
- CRL
2 stops29h 25m
Multiple Airlines
Fri 5/19:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$870
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/11:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/19![Icelandair logo]()
$567
This KAYAK deal was found by Cheapflights users on 3/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 5/61:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/20![Icelandair logo]()
$572
This KAYAK deal was found by Cheapflights users on 3/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 4/301:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/20![Icelandair logo]()
$617
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Sat 4/187:00 pm
SEA
- CRL
2 stops28h 05m
Multiple Airlines
Fri 5/19:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$884
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Wed 4/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 4/301:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/20![Icelandair logo]()
$581
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 March 22, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated March 22, 2026.
This Mytrip deal was found by Cheapflights users on 3/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/283:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$251
This FlightHub deal was found by Cheapflights users on 3/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 3/20![Icelandair logo]()
$263
This oojo deal was found by Cheapflights users on 3/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 3/22![Icelandair logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/283:40 pm
SEA
- BRU
3 stops32h 55m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
Sat 5/97:00 pm
SEA
- BRU
2 stops30h 40m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
Sat 5/97:00 pm
SEA
- CRL
3 stops28h 05m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
Tue 8/117:10 pm
SEA
- BRU
1 stop16h 35m
Aer Lingus
Deal found 3/22![Aer Lingus logo]()
$319
This oojo deal was found by Cheapflights users on 3/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/48:20 pm
SEA
- BRU
1 stop28h 35m
British Airways
Deal found 3/22![British Airways logo]()
$335
This TravelUp deal was found by Cheapflights users on 3/22. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:33 pm
SEA
- BRU
2 stops19h 27m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$338
This Air Canada deal was found by Cheapflights users on 3/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:30 am
SEA
- BRU
2 stops36h 20m
Air Canada
Deal found 3/22![Air Canada logo]()
$339
This United Airlines deal was found by Cheapflights users on 3/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:05 am
SEA
- BRU
2 stops17h 10m
United Airlines
Deal found 3/22![United Airlines logo]()
$340
This United Airlines deal was found by Cheapflights users on 3/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:01 am
SEA
- BRU
1 stop16h 59m
United Airlines
Deal found 3/22![United Airlines logo]()
$344
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 March 22, 2026.
Round-trip from | $536 (oojo) |
|---|---|
One-way from | $251 (Mytrip) |
Popular in | December |
Cheapest in | October |
Average price | $601 |
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 March 22, 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
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 5/5
7:20 pm-8:00 pm
2 stops39h 40m
Brussels Bruxelles-National
Tue 5/12
8:30 am-12:20 pm
1 stop12h 50m
$665
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/17
11:35 pm-7:40 am
1 stop23h 05m
Brussels Bruxelles-National
Thu 9/10
10:25 am-4:35 pm
1 stop15h 10m
$735
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 5/15
10:41 pm-7:15 am
1 stop23h 34m
Brussels Bruxelles-National
Mon 5/25
2:25 pm-12:20 pm
1 stop30h 55m
$810
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Sun 5/17
7:10 pm-9:25 pm
1 stop17h 15m
Charleroi Brussels
Wed 6/3
9:20 am-5:10 pm
1 stop16h 50m
$848
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 4/16
7:00 pm-9:30 pm
2 stops17h 30m
Charleroi Brussels
Thu 4/23
7:05 am-8:40 pm
2 stops22h 35m
$867
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 4/16
7:00 pm-9:25 am
2 stops29h 25m
Charleroi Brussels
Fri 5/1
9:50 am-5:10 pm
1 stop16h 20m
$870
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/9
12:54 pm-1:15 pm
2 stops15h 21m
Brussels Bruxelles-National
Wed 5/27
8:30 am-12:20 pm
1 stop12h 50m
$875
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/9
12:54 pm-1:15 pm
2 stops15h 21m
Brussels Bruxelles-National
Tue 5/26
8:30 am-12:20 pm
1 stop12h 50m
$875
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 5/18
2:55 pm-8:00 pm
2 stops20h 05m
Brussels Bruxelles-National
Mon 6/15
10:30 am-12:20 pm
1 stop34h 50m
$882
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/9
12:54 pm-1:15 pm
2 stops15h 21m
Brussels Bruxelles-National
Mon 5/25
2:25 pm-12:20 pm
1 stop30h 55m
$895
Showing 1-10 of 41 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-CRL
SEA-BRU
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-CRL
SEA-BRU
What is the cheapest month to book a flight from Seattle to Belgium?
Currently, January is the cheapest month in which you can book a flight from Seattle to Belgium (average of $378). Flying from Seattle to Belgium in July is currently the most expensive (average of $481). 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 March 22, 2026.
Peruse reviews from past customers who have flown with KLM,United Airlines, andIcelandair 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.
Boarding
7.8
Overall
7.8
Food
7.3
Comfort
7.6
Crew
8.4
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Boarding
7.8
Overall
7.8
Food
7.3
Comfort
7.6
Crew
8.4
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Boarding
7.8
Overall
7.8
Food
7.3
Comfort
7.6
Crew
8.4
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Boarding
7.8
Overall
7.8
Food
7.3
Comfort
7.6
Crew
8.4
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Boarding
7.8
Overall
7.8
Food
7.3
Comfort
7.6
Crew
8.4
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Boarding
7.8
Overall
7.8
Food
7.3
Comfort
7.6
Crew
8.4
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
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 March 22, 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 March 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$477 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$697 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$722 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$699 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$632 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$488 | Average$491 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$494 | Average$645 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$518 | Average$680 | FlexibilityNo cancel fee | On-time67% |