$271+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Mar 14 — Mar 211
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 February 12, 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 12, 2026.
This FlightHub deal was found by Cheapflights users on 2/11. 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.
Wed 2/252:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Thu 3/1912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 2/11![Icelandair logo]()
$422
This oojo deal was found by Cheapflights users on 2/9. 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 10/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sat 10/171:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 2/9![Icelandair logo]()
$429
This FlightHub deal was found by Cheapflights users on 2/10. 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.
Wed 5/63:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 5/271:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 2/10![Icelandair logo]()
$430
This oojo deal was found by Cheapflights users on 2/9. 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 9/163:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/301:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 2/9![Icelandair logo]()
$443
This Trip.com deal was found by Cheapflights users on 2/12. 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 2/12![Icelandair logo]()
$444
This oojo deal was found by Cheapflights users on 2/10. 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 5/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 2/10![Icelandair logo]()
$447
This oojo deal was found by Cheapflights users on 2/9. 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 10/13:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Mon 10/121:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 2/9![Icelandair logo]()
$448
This KAYAK deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/103:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Tue 5/261:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 2/10![Icelandair logo]()
$452
This KAYAK deal was found by Cheapflights users on 2/10. 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.
Tue 5/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 5/271:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 2/10![Icelandair logo]()
$453
This KAYAK deal was found by Cheapflights users on 2/10. 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
Tue 5/261:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 2/10![Icelandair logo]()
$454
This Gotogate deal was found by Cheapflights users on 2/9. 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 3/52:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Thu 3/1912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 2/9![Icelandair logo]()
$466
This oojo deal was found by Cheapflights users on 2/9. 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 10/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 10/191:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 2/9![Icelandair logo]()
$468
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 12, 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 12, 2026.
This Gotogate deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/168:00 am
SEA
- BRU
2 stops21h 15m
Multiple Airlines
Wed 4/17:00 am
BRU
- SEA
1 stop14h 20m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$478
This oojo deal was found by Cheapflights users on 2/12. 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 2/12![Icelandair logo]()
$480
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/103:00 pm
SEA
- BRU
1 stop14h 35m
Lufthansa
Tue 3/177:00 am
BRU
- SEA
1 stop14h 10m
Lufthansa
Deal found 2/8![Lufthansa logo]()
$480
This United Airlines deal was found by Cheapflights users on 2/9. 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 3/117:00 am
SEA
- BRU
2 stops22h 15m
United Airlines
Tue 3/1710:00 am
BRU
- SEA
2 stops41h 03m
United Airlines
Deal found 2/9![United Airlines logo]()
$486
This FlightHub deal was found by Cheapflights users on 2/8. 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.
Tue 3/1010:10 am
SEA
- BRU
2 stops37h 40m
Air Canada
Tue 3/1710:00 am
BRU
- SEA
2 stops37h 01m
Air Canada
Deal found 2/8![Air Canada logo]()
$501
This KAYAK deal was found by Cheapflights users on 2/12. 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 4/301:35 pm
SEA
- BRU
1 stop22h 05m
British Airways
Tue 5/510:55 am
BRU
- SEA
1 stop33h 40m
British Airways
Deal found 2/12![British Airways logo]()
$509
This KLM deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:30 am
SEA
- BRU
1 stop16h 30m
KLM
Tue 3/1710:00 am
BRU
- SEA
1 stop16h 58m
KLM
Deal found 2/10![KLM logo]()
$509
This United Airlines deal was found by Cheapflights users on 2/11. 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 4/87:00 am
SEA
- BRU
2 stops21h 15m
United Airlines
Tue 4/219:40 am
BRU
- SEA
2 stops35h 08m
United Airlines
Deal found 2/11![United Airlines logo]()
$490
This Mytrip deal was found by Cheapflights users on 2/9. 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 3/113:35 pm
SEA
- CRL
2 stops21h 20m
Multiple Airlines
Tue 3/178:40 am
CRL
- SEA
2 stops17h 20m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$620
This Mytrip deal was found by Cheapflights users on 2/11. 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 4/132:10 pm
SEA
- CRL
2 stops20h 30m
Multiple Airlines
Sun 4/198:15 pm
CRL
- SEA
2 stops25h 05m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$791
This Mytrip deal was found by Cheapflights users on 2/9. 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 stops20h 50m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$846
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 2/252:35 pm
SEA
- CRL
2 stops21h 20m
Multiple Airlines
Mon 3/161:10 pm
CRL
- SEA
1 stop14h 10m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$911
This Mytrip deal was found by Cheapflights users on 2/10. 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 2/252:35 pm
SEA
- CRL
2 stops21h 20m
Multiple Airlines
Sun 3/155:30 pm
CRL
- SEA
2 stops31h 10m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$929
This Mytrip deal was found by Cheapflights users on 2/10. 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 3/72:00 pm
SEA
- CRL
2 stops23h 45m
Multiple Airlines
Fri 3/135:40 pm
CRL
- SEA
2 stops27h 30m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$934
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/307:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Mon 4/1310:00 pm
CRL
- SEA
2 stops30h 25m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$946
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 2/232:35 pm
SEA
- CRL
2 stops35h 35m
Multiple Airlines
Mon 3/161:10 pm
CRL
- SEA
1 stop14h 10m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$950
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 2/272:35 pm
SEA
- CRL
2 stops21h 10m
Multiple Airlines
Mon 3/161:10 pm
CRL
- SEA
1 stop14h 10m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$963
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated February 12, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated February 12, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 2/11. 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.
Wed 2/252:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Thu 3/1912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 2/11![Icelandair logo]()
$422
This Mytrip deal was found by Cheapflights users on 2/9. 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 3/42:35 pm
SEA
- CRL
2 stops21h 20m
Multiple Airlines
Mon 3/97:25 am
CRL
- SEA
2 stops18h 35m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$832
This Gotogate deal was found by Cheapflights users on 2/9. 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 3/52:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Thu 3/1912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 2/9![Icelandair logo]()
$466
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/103:00 pm
SEA
- BRU
1 stop14h 35m
Lufthansa
Tue 3/177:00 am
BRU
- SEA
1 stop14h 10m
Lufthansa
Deal found 2/8![Lufthansa logo]()
$480
This FlightHub deal was found by Cheapflights users on 2/8. 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.
Tue 3/1010:10 am
SEA
- BRU
2 stops37h 40m
Air Canada
Tue 3/1710:00 am
BRU
- SEA
2 stops37h 01m
Air Canada
Deal found 2/8![Air Canada logo]()
$501
This United Airlines deal was found by Cheapflights users on 2/9. 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 3/117:00 am
SEA
- BRU
2 stops22h 15m
United Airlines
Tue 3/1710:00 am
BRU
- SEA
2 stops41h 03m
United Airlines
Deal found 2/9![United Airlines logo]()
$486
This Gotogate deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/118:00 am
SEA
- BRU
2 stops21h 15m
Multiple Airlines
Tue 3/177:00 am
BRU
- SEA
1 stop14h 10m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$488
This Mytrip deal was found by Cheapflights users on 2/9. 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 3/113:35 pm
SEA
- CRL
2 stops21h 20m
Multiple Airlines
Tue 3/178:40 am
CRL
- SEA
2 stops17h 20m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$620
This Gotogate deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/168:00 am
SEA
- BRU
2 stops21h 15m
Multiple Airlines
Wed 4/17:00 am
BRU
- SEA
1 stop14h 20m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$478
This oojo deal was found by Cheapflights users on 2/10. 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 2/10![Icelandair logo]()
$502
This Mytrip deal was found by Cheapflights users on 2/9. 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 stops20h 50m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$846
This KAYAK deal was found by Cheapflights users on 2/9. 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.
Tue 3/317:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 4/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 2/9![Icelandair logo]()
$508
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 12, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
This oojo deal was found by Cheapflights users on 2/10. 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.
Fri 5/17:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 2/10![Icelandair logo]()
$271
This Mytrip deal was found by Cheapflights users on 2/10. 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 3/277:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 2/10![Icelandair logo]()
$309
This oojo deal was found by Cheapflights users on 2/12. 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 3/189:05 pm
SEA
- BRU
1 stop13h 10m
Aer Lingus
Deal found 2/12![Aer Lingus logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:35 pm
SEA
- BRU
3 stops30h 20m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$357
This Mytrip deal was found by Cheapflights users on 2/11. 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 3/195:40 am
SEA
- BRU
2 stops18h 10m
Air Canada
Deal found 2/11![Air Canada logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/273:35 pm
SEA
- BRU
3 stops32h 40m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$381
This Mytrip deal was found by Cheapflights users on 2/12. 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 3/183:40 pm
SEA
- BRU
2 stops20h 20m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/227:00 am
SEA
- CRL
3 stops30h 05m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$421
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:50 pm
SEA
- CRL
2 stops38h 45m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 6/183:40 pm
SEA
- CRL
2 stops35h 30m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$426
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 6/294:35 pm
SEA
- CRL
2 stops44h 40m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 2/12. 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 3/188:59 am
SEA
- BRU
3 stops20h 11m
United Airlines
Deal found 2/12![United Airlines logo]()
$428
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 12, 2026.
Round-trip from | $422 (FlightHub) |
|---|---|
One-way from | $271 (oojo) |
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 12, 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
Mon 3/16
8:00 am-1:15 pm
2 stops21h 15m
Brussels Bruxelles-National
Wed 4/1
7:00 am-12:20 pm
1 stop14h 20m
$478
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 3/25
3:35 pm-11:55 am
1 stop12h 20m
Brussels Bruxelles-National
Mon 3/30
1:50 pm-8:40 pm
1 stop15h 50m
$480
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 3/10
3:00 pm-1:35 pm
1 stop14h 35m
Brussels Bruxelles-National
Tue 3/17
7:00 am-1:10 pm
1 stop14h 10m
$480
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 3/11
7:00 am-1:15 pm
2 stops22h 15m
Brussels Bruxelles-National
Tue 3/17
10:00 am-7:03 pm
2 stops41h 03m
$486
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 4/8
7:00 am-1:15 pm
2 stops21h 15m
Brussels Bruxelles-National
Tue 4/21
9:40 am-11:48 am
2 stops35h 08m
$490
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 3/10
10:10 am-7:50 am
2 stops37h 40m
Brussels Bruxelles-National
Tue 3/17
10:00 am-3:01 pm
2 stops37h 01m
$501
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/30
1:35 pm-8:40 pm
1 stop22h 05m
Brussels Bruxelles-National
Tue 5/5
10:55 am-11:35 am
1 stop33h 40m
$509
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 3/11
7:30 am-8:00 am
1 stop16h 30m
Brussels Bruxelles-National
Tue 3/17
10:00 am-6:58 pm
1 stop16h 58m
$509
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Wed 3/11
3:35 pm-8:55 pm
2 stops21h 20m
Charleroi Brussels
Tue 3/17
8:40 am-6:00 pm
2 stops17h 20m
$620
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Mon 4/13
2:10 pm-7:40 pm
2 stops20h 30m
Charleroi Brussels
Sun 4/19
8:15 pm-12:20 pm
2 stops25h 05m
$791
Showing 1-10 of 33 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 12, 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.
Crew
8.4
Overall
7.7
Comfort
7.6
Food
7.3
Boarding
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSnapyou,Jan 2026
TPA - LHR
Crew
8.4
Overall
7.7
Comfort
7.6
Food
7.3
Boarding
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSnapyou,Jan 2026
TPA - LHR
Crew
8.4
Overall
7.7
Comfort
7.6
Food
7.3
Boarding
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSnapyou,Jan 2026
TPA - LHR
Crew
8.4
Overall
7.7
Comfort
7.6
Food
7.3
Boarding
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSnapyou,Jan 2026
TPA - LHR
Crew
8.4
Overall
7.7
Comfort
7.6
Food
7.3
Boarding
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSnapyou,Jan 2026
TPA - LHR
Crew
8.4
Overall
7.7
Comfort
7.6
Food
7.3
Boarding
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSnapyou,Jan 2026
TPA - LHR
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
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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 12, 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 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$384 | Average$474 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$436 | Average$727 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$482 | Average$657 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$483 | Average$741 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$486 | Average$699 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$488 | Average$491 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$496 | Average$675 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$518 | Average$808 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$536 | Average$592 | FlexibilityNo cancel fee | On-timeN/A |