$258+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Apr 27 — May 41
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 28, 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 28, 2026.
This Mytrip deal was found by Cheapflights users on 3/24. 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 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/11:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/24![Icelandair logo]()
$545
This Mytrip deal was found by Cheapflights users on 3/26. 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 3/26![Multiple Airlines logo]()
$549
This Mytrip deal was found by Cheapflights users on 3/25. 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 4/307:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/25![Icelandair logo]()
$551
This oojo deal was found by Cheapflights users on 3/25. 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 3/25![Icelandair logo]()
$574
This Gotogate deal was found by Cheapflights users on 3/26. 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.
Sat 4/257:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/26![Icelandair logo]()
$575
This KAYAK deal was found by Cheapflights users on 3/25. 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.
Mon 5/47:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 5/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/25![Icelandair logo]()
$617
This Mytrip deal was found by Cheapflights users on 3/26. 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 4/253:40 pm
SEA
- BRU
2 stops16h 00m
Multiple Airlines
Fri 5/810:20 am
BRU
- SEA
3 stops45h 20m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$619
This Gotogate deal was found by Cheapflights users on 3/25. 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 5/77:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 5/201:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/25![Icelandair logo]()
$626
This oojo deal was found by Cheapflights users on 3/25. 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 5/37:10 pm
SEA
- BRU
1 stop37h 45m
Turkish Airlines
Thu 5/287:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 3/25![Turkish Airlines logo]()
$643
This Gotogate deal was found by Cheapflights users on 3/25. 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.
Sat 5/97:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sat 5/161:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/25![Icelandair logo]()
$647
This Gotogate deal was found by Cheapflights users on 3/24. 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 11/310:35 am
SEA
- BRU
2 stops24h 25m
Multiple Airlines
Tue 11/177:00 am
BRU
- SEA
1 stop14h 10m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$650
This Gotogate deal was found by Cheapflights users on 3/25. 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 4/307:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sat 5/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/25![Icelandair logo]()
$651
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 28, 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 28, 2026.
This Mytrip deal was found by Cheapflights users on 3/26. 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 3/26![Multiple Airlines logo]()
$549
This Turkish Airlines deal was found by Cheapflights users on 3/28. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Tue 9/297:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 3/28![Turkish Airlines logo]()
$659
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/308:51 am
SEA
- BRU
2 stops26h 09m
United Airlines
Tue 5/57:00 am
BRU
- SEA
2 stops20h 30m
United Airlines
Deal found 3/24![United Airlines logo]()
$676
This Scandinavian Airlines deal was found by Cheapflights users on 3/23. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/303:55 pm
SEA
- BRU
2 stops33h 45m
Scandinavian Airlines
Fri 6/123:15 pm
BRU
- SEA
1 stop31h 30m
Scandinavian Airlines
Deal found 3/23![Scandinavian Airlines logo]()
$865
This Icelandair deal was found by Cheapflights users on 3/23. 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 Icelandair 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
Multiple Airlines
Fri 4/2410:55 am
BRU
- SEA
2 stops16h 00m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$719
This Turkish Airlines deal was found by Cheapflights users on 3/24. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Sun 9/137:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 3/24![Turkish Airlines logo]()
$767
This Mytrip deal was found by Cheapflights users on 3/25. 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 4/307:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Fri 5/89:50 am
CRL
- SEA
2 stops32h 50m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 3/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:00 pm
SEA
- BRU
2 stops39h 00m
United Airlines
Sun 4/198:30 am
BRU
- SEA
1 stop12h 50m
United Airlines
Deal found 3/23![United Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 3/25. 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 5/98:38 am
SEA
- BRU
2 stops19h 32m
United Airlines
Sat 5/1611:10 am
BRU
- SEA
2 stops21h 19m
United Airlines
Deal found 3/25![United Airlines logo]()
$830
This United Airlines deal was found by Cheapflights users on 3/24. 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 8/111:52 pm
SEA
- BRU
1 stop24h 08m
United Airlines
Wed 8/129:55 am
BRU
- SEA
2 stops19h 48m
United Airlines
Deal found 3/24![United Airlines logo]()
$859
This Icelandair deal was found by Cheapflights users on 3/26. 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.
Thu 4/163:40 pm
SEA
- BRU
1 stop12h 15m
Multiple Airlines
Thu 4/2311:20 am
BRU
- SEA
2 stops15h 35m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$859
This Kiwi.com deal was found by Cheapflights users on 3/27. 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
- CRL
2 stops31h 25m
Multiple Airlines
Fri 5/19:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$919
This United Airlines deal was found by Cheapflights users on 3/26. 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 5/185:50 am
SEA
- BRU
2 stops29h 10m
United Airlines
Mon 6/1510:30 am
BRU
- SEA
1 stop34h 50m
United Airlines
Deal found 3/26![United Airlines logo]()
$932
This United Airlines deal was found by Cheapflights users on 3/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:00 am
SEA
- BRU
2 stops20h 15m
United Airlines
Fri 6/126:45 am
BRU
- SEA
1 stop19h 14m
United Airlines
Deal found 3/23![United Airlines logo]()
$1,001
This Mytrip deal was found by Cheapflights users on 3/25. 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 5/287:45 am
CRL
- SEA
2 stops22h 23m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$1,011
This Mytrip deal was found by Cheapflights users on 3/27. 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 6/13:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Mon 6/89:10 pm
CRL
- SEA
2 stops27h 30m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,055
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/213:40 pm
SEA
- CRL
2 stops17h 55m
Multiple Airlines
Wed 4/299:20 am
CRL
- SEA
1 stop16h 50m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,055
This Mytrip deal was found by Cheapflights users on 3/24. 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 4/183:40 pm
SEA
- CRL
2 stops14h 40m
Multiple Airlines
Tue 4/218:50 pm
CRL
- SEA
3 stops45h 48m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$1,057
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 4/247:00 pm
SEA
- CRL
2 stops29h 05m
Multiple Airlines
Fri 5/19:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$1,094
This Mytrip deal was found by Cheapflights users on 3/28. 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 7/98:00 am
SEA
- CRL
3 stops26h 55m
Multiple Airlines
Mon 7/136:00 pm
CRL
- SEA
3 stops31h 59m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$1,159
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/1810:53 pm
SEA
- CRL
2 stops34h 37m
Multiple Airlines
Fri 5/19:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$1,192
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated March 28, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated March 28, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 3/26. 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 3/317:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/11:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 3/26![Icelandair logo]()
$668
This Mytrip deal was found by Cheapflights users on 3/26. 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 3/26![Multiple Airlines logo]()
$549
This oojo deal was found by Cheapflights users on 3/25. 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 3/25![Icelandair logo]()
$574
This Mytrip deal was found by Cheapflights users on 3/24. 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 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/11:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/24![Icelandair logo]()
$545
This Kiwi.com deal was found by Cheapflights users on 3/24. 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
Multiple Airlines
Fri 5/17:35 pm
BRU
- SEA
2 stops32h 48m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$676
This Gotogate deal was found by Cheapflights users on 3/26. 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.
Sat 4/257:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/26![Icelandair logo]()
$575
This Mytrip deal was found by Cheapflights users on 3/26. 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 4/253:40 pm
SEA
- BRU
2 stops16h 00m
Multiple Airlines
Fri 5/810:20 am
BRU
- SEA
3 stops45h 20m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$619
This Mytrip deal was found by Cheapflights users on 3/26. 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 4/253:40 pm
SEA
- CRL
2 stops21h 00m
Multiple Airlines
Fri 5/89:50 am
CRL
- SEA
3 stops41h 40m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$770
This Mytrip deal was found by Cheapflights users on 3/25. 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 4/307:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/25![Icelandair logo]()
$551
This Gotogate deal was found by Cheapflights users on 3/25. 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 4/307:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sat 5/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/25![Icelandair logo]()
$651
This Cheapflightsfares deal was found by Cheapflights users on 3/25. 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.
Thu 4/302:10 pm
SEA
- BRU
1 stop13h 35m
Lufthansa
Tue 5/510:30 am
BRU
- SEA
2 stops17h 00m
Lufthansa
Deal found 3/25![Lufthansa logo]()
$660
This Mytrip deal was found by Cheapflights users on 3/26. 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 4/307:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Fri 5/89:50 am
CRL
- SEA
3 stops41h 40m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$676
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 28, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated March 28, 2026.
This Booking.com deal was found by Cheapflights users on 3/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:55 pm
SEA
- BRU
1 stop16h 45m
Aer Lingus
Deal found 3/27![Aer Lingus logo]()
$258
This Mytrip deal was found by Cheapflights users on 3/23. 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.
Thu 4/307:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 3/23![Icelandair logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 3/24. 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
- CRL
3 stops42h 15m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
Thu 4/307:00 pm
SEA
- BRU
2 stops56h 00m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 4/247:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 3/26![Icelandair logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 4/297:00 pm
SEA
- BRU
3 stops30h 40m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$315
This Cheapflightsfares deal was found by Cheapflights users on 3/25. 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 8/41:30 pm
SEA
- BRU
1 stop21h 55m
British Airways
Deal found 3/25![British Airways logo]()
$333
This oojo deal was found by Cheapflights users on 3/25. 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 9/158:20 pm
SEA
- BRU
1 stop15h 05m
British Airways
Deal found 3/25![British Airways logo]()
$335
This Mytrip deal was found by Cheapflights users on 3/24. 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 4/297:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 3/24![Icelandair logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 5/141:45 pm
SEA
- CRL
2 stops22h 45m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 4/247:00 pm
SEA
- CRL
2 stops52h 05m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 7/217:10 pm
SEA
- CRL
2 stops18h 45m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$355
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 28, 2026.
Round-trip from | $545 (Mytrip) |
|---|---|
One-way from | $258 (Booking.com) |
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 28, 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 - 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
$549
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 9/22
7:10 pm-9:25 pm
1 stop17h 15m
Brussels Bruxelles-National
Tue 9/29
7:20 am-5:15 pm
1 stop18h 55m
$659
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/30
8:51 am-8:00 pm
2 stops26h 09m
Brussels Bruxelles-National
Tue 5/5
7:00 am-6:30 pm
2 stops20h 30m
$676
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 4/18
7:00 pm-12:55 pm
1 stop32h 55m
Brussels Bruxelles-National
Fri 4/24
10:55 am-5:55 pm
2 stops16h 00m
$719
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 4/30
7:00 pm-9:30 pm
2 stops17h 30m
Charleroi Brussels
Fri 5/8
9:50 am-9:40 am
2 stops32h 50m
$727
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 9/2
7:10 pm-9:25 pm
1 stop17h 15m
Brussels Bruxelles-National
Sun 9/13
7:20 am-5:15 pm
1 stop18h 55m
$767
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 4/11
8:00 pm-8:00 pm
2 stops39h 00m
Brussels Bruxelles-National
Sun 4/19
8:30 am-12:20 pm
1 stop12h 50m
$815
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 5/9
8:38 am-1:10 pm
2 stops19h 32m
Brussels Bruxelles-National
Sat 5/16
11:10 am-11:29 pm
2 stops21h 19m
$830
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 8/1
11:52 pm-9:00 am
1 stop24h 08m
Brussels Bruxelles-National
Wed 8/12
9:55 am-8:43 pm
2 stops19h 48m
$859
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/16
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Thu 4/23
11:20 am-5:55 pm
2 stops15h 35m
$859
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-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 28, 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.
Boarding
8.1
Entertainment
7.8
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
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 March 28, 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 28, 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% |