$188+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Mar 21 — Mar 281
1 adult, Economy
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Find cheap flights from Seattle to Belgium with Cheapflights
1. Tell us where you want to go
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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 February 19, 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 February 19, 2026.
This oojo deal was found by Cheapflights users on 2/18. 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 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 2/18![Icelandair logo]()
$398
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Thu 3/1912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 2/16![Icelandair logo]()
$411
This Trip.com deal was found by Cheapflights users on 2/19. 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.
Sat 10/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 2/19![Icelandair logo]()
$443
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Wed 4/88:42 am
SEA
- BRU
3 stops19h 33m
United Airlines
Tue 4/219:25 am
BRU
- SEA
2 stops44h 28m
United Airlines
Deal found 2/17![United Airlines logo]()
$485
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:00 am
SEA
- BRU
2 stops24h 15m
United Airlines
Tue 3/319:25 am
BRU
- SEA
2 stops44h 28m
United Airlines
Deal found 2/16![United Airlines logo]()
$486
This Air Canada deal was found by Cheapflights users on 2/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:40 am
SEA
- BRU
2 stops16h 30m
Air Canada
Tue 4/219:25 am
BRU
- SEA
2 stops18h 55m
Air Canada
Deal found 2/17![Air Canada logo]()
$501
This oojo deal was found by Cheapflights users on 2/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Mon 3/301:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 2/18![Icelandair logo]()
$502
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/187:15 am
SEA
- BRU
2 stops22h 00m
United Airlines
Wed 4/112:00 pm
BRU
- SEA
1 stop17h 53m
United Airlines
Deal found 2/16![United Airlines logo]()
$505
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:15 am
SEA
- BRU
1 stop17h 45m
Delta
Thu 4/28:05 am
BRU
- SEA
1 stop17h 25m
Delta
Deal found 2/17![Delta logo]()
$507
This Mytrip deal was found by Cheapflights users on 2/17. 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.
Wed 4/85:40 am
SEA
- CRL
3 stops29h 55m
Multiple Airlines
Tue 4/214:15 pm
CRL
- SEA
2 stops29h 05m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$784
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/263:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Mon 6/110:00 pm
CRL
- SEA
3 stops44h 15m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$795
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:40 pm
SEA
- CRL
2 stops22h 15m
Multiple Airlines
Wed 4/228:00 am
CRL
- SEA
2 stops21h 40m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$832
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 February 19, 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 February 19, 2026.
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Wed 4/812:54 pm
SEA
- BRU
2 stops15h 21m
United Airlines
Tue 4/219:25 am
BRU
- SEA
2 stops42h 35m
United Airlines
Deal found 2/17![United Airlines logo]()
$485
This Finnair deal was found by Cheapflights users on 2/19. 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.
Thu 4/301:19 pm
SEA
- BRU
2 stops20h 01m
Finnair
Tue 5/56:30 am
BRU
- SEA
2 stops22h 06m
Finnair
Deal found 2/19![Finnair logo]()
$532
This KAYAK deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1810:10 am
SEA
- BRU
2 stops37h 40m
Lufthansa
Wed 4/110:15 am
BRU
- SEA
1 stop17h 45m
Lufthansa
Deal found 2/16![Lufthansa logo]()
$537
This Mytrip deal was found by Cheapflights users on 2/17. 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.
Wed 4/85:40 am
SEA
- CRL
3 stops29h 55m
Multiple Airlines
Tue 4/214:15 pm
CRL
- SEA
2 stops29h 05m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$784
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/187:15 am
SEA
- BRU
2 stops22h 00m
United Airlines
Wed 4/19:25 am
BRU
- SEA
2 stops44h 28m
United Airlines
Deal found 2/16![United Airlines logo]()
$485
This United Airlines deal was found by Cheapflights users on 2/18. 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.
Thu 4/162:24 pm
SEA
- BRU
2 stops20h 36m
United Airlines
Thu 4/239:25 am
BRU
- SEA
2 stops46h 14m
United Airlines
Deal found 2/18![United Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:00 am
SEA
- BRU
2 stops21h 15m
United Airlines
Mon 3/309:40 am
BRU
- SEA
1 stop21h 13m
United Airlines
Deal found 2/15![United Airlines logo]()
$554
This United Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:14 pm
SEA
- BRU
1 stop23h 01m
United Airlines
Sun 5/107:00 am
BRU
- SEA
2 stops20h 30m
United Airlines
Deal found 2/15![United Airlines logo]()
$556
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/263:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Mon 6/110:00 pm
CRL
- SEA
2 stops32h 08m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$798
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:40 pm
SEA
- CRL
2 stops22h 15m
Multiple Airlines
Wed 4/228:00 am
CRL
- SEA
2 stops21h 40m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$832
This Kiwi.com deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/189:05 pm
SEA
- CRL
1 stop31h 30m
Multiple Airlines
Tue 3/311:50 pm
CRL
- SEA
2 stops29h 50m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$901
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/273:35 pm
SEA
- CRL
2 stops21h 10m
Multiple Airlines
Fri 4/108:05 pm
CRL
- SEA
2 stops28h 35m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$915
This Mytrip deal was found by Cheapflights users on 2/18. 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.
Mon 3/22:35 pm
SEA
- CRL
3 stops34h 50m
Multiple Airlines
Thu 3/52:55 pm
CRL
- SEA
3 stops35h 05m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$978
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/83:00 pm
SEA
- CRL
2 stops17h 00m
Multiple Airlines
Sat 3/146:15 pm
CRL
- SEA
2 stops31h 50m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$994
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/13:40 pm
SEA
- CRL
2 stops21h 35m
Multiple Airlines
Mon 4/137:40 pm
CRL
- SEA
3 stops32h 40m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$1,027
This Mytrip deal was found by Cheapflights users on 2/18. 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.
Wed 3/253:35 pm
SEA
- CRL
2 stops21h 20m
Multiple Airlines
Mon 3/308:50 am
CRL
- SEA
2 stops18h 05m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$1,028
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated February 19, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated February 19, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 2/18. 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.
Mon 3/22:35 pm
SEA
- CRL
3 stops34h 50m
Multiple Airlines
Thu 3/52:55 pm
CRL
- SEA
3 stops35h 05m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$978
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Thu 3/1912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 2/16![Icelandair logo]()
$411
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/187:15 am
SEA
- BRU
2 stops22h 00m
United Airlines
Wed 4/19:25 am
BRU
- SEA
2 stops44h 28m
United Airlines
Deal found 2/16![United Airlines logo]()
$485
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:00 am
SEA
- BRU
2 stops24h 15m
United Airlines
Tue 3/319:25 am
BRU
- SEA
2 stops44h 28m
United Airlines
Deal found 2/16![United Airlines logo]()
$486
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:15 am
SEA
- BRU
1 stop17h 45m
Delta
Thu 4/28:05 am
BRU
- SEA
1 stop17h 25m
Delta
Deal found 2/17![Delta logo]()
$507
This Air Canada deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:40 am
SEA
- BRU
2 stops18h 10m
Air Canada
Thu 4/29:25 am
BRU
- SEA
2 stops21h 28m
Air Canada
Deal found 2/16![Air Canada logo]()
$509
This Kiwi.com deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/189:05 pm
SEA
- CRL
1 stop31h 30m
Multiple Airlines
Tue 3/311:50 pm
CRL
- SEA
2 stops29h 50m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$901
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:00 am
SEA
- BRU
2 stops18h 10m
United Airlines
Wed 4/19:25 am
BRU
- SEA
2 stops44h 28m
United Airlines
Deal found 2/16![United Airlines logo]()
$513
This Orbitz deal was found by Cheapflights users on 2/19. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/195:40 am
SEA
- BRU
2 stops18h 10m
Multiple Airlines
Thu 3/269:40 am
BRU
- SEA
2 stops20h 36m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$526
This Air Canada deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/205:40 am
SEA
- BRU
2 stops18h 10m
Air Canada
Fri 3/2710:00 am
BRU
- SEA
2 stops44h 16m
Air Canada
Deal found 2/16![Air Canada logo]()
$510
This oojo deal was found by Cheapflights users on 2/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Mon 3/301:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 2/18![Icelandair logo]()
$502
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/273:35 pm
SEA
- CRL
2 stops21h 10m
Multiple Airlines
Fri 4/108:05 pm
CRL
- SEA
2 stops28h 35m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$915
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 February 19, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated February 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/17. 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.
Tue 4/147:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 2/17![Icelandair logo]()
$188
This oojo deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/193:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 2/16![Icelandair logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 2/17. 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.
Tue 4/143:40 pm
SEA
- CRL
2 stops35h 25m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$235
This oojo deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/173:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 2/16![Icelandair logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 4/137:00 pm
SEA
- CRL
2 stops56h 05m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:10 pm
SEA
- BRU
1 stop16h 35m
Aer Lingus
Deal found 2/15![Aer Lingus logo]()
$252
This TravelUp deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:39 am
SEA
- BRU
2 stops23h 21m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$254
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/178:38 am
SEA
- BRU
2 stops26h 22m
United Airlines
Deal found 2/16![United Airlines logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 2/17. 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.
Tue 4/143:40 pm
SEA
- BRU
3 stops32h 55m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:39 am
SEA
- BRU
3 stops35h 11m
United Airlines
Deal found 2/16![United Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/193:40 pm
SEA
- CRL
2 stops31h 30m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 4/133:40 pm
SEA
- BRU
3 stops33h 15m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$269
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 February 19, 2026.
Round-trip from | $398 (oojo) |
|---|---|
One-way from | $188 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $556 |
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 February 19, 2026.
Use the filters below to find and compare flights from Seattle to Belgium that are best for you.
Fly from
Seattle
Fly to
Belgium
Route
Depart
Return
Price
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 4/8
12:54 pm-1:15 pm
2 stops15h 21m
Brussels Bruxelles-National
Tue 4/21
9:25 am-7:00 pm
2 stops42h 35m
$485
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 3/18
7:15 am-1:15 pm
2 stops22h 00m
Brussels Bruxelles-National
Wed 4/1
9:25 am-8:53 pm
2 stops44h 28m
$485
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/30
1:19 pm-6:20 pm
2 stops20h 01m
Brussels Bruxelles-National
Tue 5/5
6:30 am-7:36 pm
2 stops22h 06m
$532
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/16
2:24 pm-8:00 pm
2 stops20h 36m
Brussels Bruxelles-National
Thu 4/23
9:25 am-10:39 pm
2 stops46h 14m
$535
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 3/18
10:10 am-7:50 am
2 stops37h 40m
Brussels Bruxelles-National
Wed 4/1
10:15 am-7:00 pm
1 stop17h 45m
$537
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 3/18
8:00 am-1:15 pm
2 stops21h 15m
Brussels Bruxelles-National
Mon 3/30
9:40 am-9:53 pm
1 stop21h 13m
$554
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 5/2
11:14 pm-7:15 am
1 stop23h 01m
Brussels Bruxelles-National
Sun 5/10
7:00 am-6:30 pm
2 stops20h 30m
$556
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Wed 4/8
5:40 am-8:35 pm
3 stops29h 55m
Charleroi Brussels
Tue 4/21
4:15 pm-12:20 pm
2 stops29h 05m
$784
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 5/26
3:40 pm-9:15 pm
2 stops20h 35m
Charleroi Brussels
Mon 6/1
10:00 pm-9:08 pm
2 stops32h 08m
$798
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Sun 4/19
3:40 pm-10:55 pm
2 stops22h 15m
Charleroi Brussels
Wed 4/22
8:00 am-8:40 pm
2 stops21h 40m
$832
Showing 1-10 of 34 results
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
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 $496). 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 February 19, 2026.
Peruse reviews from past customers who have flown with KLM, United Airlines, and Icelandair 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.
Comfort
7.6
Boarding
7.8
Entertainment
7.1
Crew
8.4
Food
7.3
Overall
7.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Comfort
7.6
Boarding
7.8
Entertainment
7.1
Crew
8.4
Food
7.3
Overall
7.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Comfort
7.6
Boarding
7.8
Entertainment
7.1
Crew
8.4
Food
7.3
Overall
7.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Comfort
7.6
Boarding
7.8
Entertainment
7.1
Crew
8.4
Food
7.3
Overall
7.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Comfort
7.6
Boarding
7.8
Entertainment
7.1
Crew
8.4
Food
7.3
Overall
7.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Comfort
7.6
Boarding
7.8
Entertainment
7.1
Crew
8.4
Food
7.3
Overall
7.7
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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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 February 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to Belgium flights
Consider these flights traveling from Seattle to Belgium.
Top 9 airlines flying from Seattle to Belgium
Discover the top 9 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 February 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$384 | Average$475 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$436 | Average$727 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$482 | Average$642 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$483 | Average$733 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$486 | Average$688 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$488 | Average$491 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$494 | Average$647 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$518 | Average$808 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$536 | Average$592 | FlexibilityNo cancel fee | On-timeN/A |