$232+ 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Jul 24 — Jul 311
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 June 24, 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 June 24, 2026.
This Gotogate deal was found by Cheapflights users on 6/24. 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.
Mon 8/1711:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/24![Icelandair logo]()
$561
This Gotogate deal was found by Cheapflights users on 6/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 8/191:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 6/19![Icelandair logo]()
$564
This Cheapflightsfares deal was found by Cheapflights users on 6/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/2912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 6/23![Icelandair logo]()
$565
This oojo deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/21![Icelandair logo]()
$567
This oojo deal was found by Cheapflights users on 6/19. 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 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
Sun 10/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/19![Icelandair logo]()
$569
This Justfly.com deal was found by Cheapflights users on 6/24. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 10/161:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/24![Icelandair logo]()
$572
This Justfly.com deal was found by Cheapflights users on 6/24. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/24![Icelandair logo]()
$573
This oojo deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 8/211:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/22![Icelandair logo]()
$574
This Mytrip deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/233:40 pm
SEA
- CRL
3 stops22h 15m
Multiple Airlines
Mon 8/319:15 pm
CRL
- SEA
3 stops32h 52m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$666
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/303:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Tue 9/156:55 am
CRL
- SEA
3 stops35h 45m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$699
This Mytrip deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
- CRL
3 stops18h 55m
Multiple Airlines
Mon 8/319:15 pm
CRL
- SEA
3 stops32h 52m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$766
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/303:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Wed 9/169:20 am
CRL
- SEA
3 stops22h 22m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$774
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 June 24, 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 June 24, 2026.
This oojo deal was found by Cheapflights users on 6/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/19![Icelandair logo]()
$580
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/303:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Tue 9/156:55 am
CRL
- SEA
3 stops35h 45m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$699
This Delta deal was found by Cheapflights users on 6/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1511:15 am
SEA
- BRU
2 stops18h 00m
Delta
Tue 11/248:05 am
BRU
- SEA
1 stop12h 42m
Delta
Deal found 6/23![Delta logo]()
$733
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/33:40 pm
SEA
- BRU
2 stops19h 20m
United Airlines
Wed 8/192:25 pm
BRU
- SEA
1 stop30h 30m
United Airlines
Deal found 6/20![United Airlines logo]()
$771
This Icelandair deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/21![Icelandair logo]()
$595
This United deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:00 am
SEA
- BRU
1 stop17h 00m
Multiple Airlines
Wed 8/197:40 pm
BRU
- SEA
2 stops31h 52m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$746
This Delta deal was found by Cheapflights users on 6/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:59 pm
SEA
- BRU
1 stop22h 41m
Delta
Mon 8/313:10 pm
BRU
- SEA
1 stop29h 37m
Delta
Deal found 6/23![Delta logo]()
$749
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Thu 10/159:10 am
BRU
- SEA
2 stops39h 52m
United Airlines
Deal found 6/21![United Airlines logo]()
$778
This Mytrip deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
- CRL
3 stops18h 55m
Multiple Airlines
Mon 8/319:15 pm
CRL
- SEA
3 stops32h 52m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$766
This United Airlines deal was found by Cheapflights users on 6/24. 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.
Mon 9/2810:55 am
SEA
- BRU
2 stops24h 05m
United Airlines
Fri 10/166:20 am
BRU
- SEA
1 stop15h 00m
United Airlines
Deal found 6/24![United Airlines logo]()
$780
This United deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/301:57 pm
SEA
- BRU
1 stop34h 03m
Multiple Airlines
Wed 9/169:10 am
BRU
- SEA
2 stops33h 57m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$768
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/303:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Wed 9/169:20 am
CRL
- SEA
3 stops22h 22m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$774
This Mytrip deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Mon 8/319:15 pm
CRL
- SEA
3 stops32h 52m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$839
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:40 pm
SEA
- CRL
3 stops21h 00m
Multiple Airlines
Wed 9/169:20 am
CRL
- SEA
3 stops22h 22m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$849
This Mytrip deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:40 pm
SEA
- CRL
2 stops20h 50m
Multiple Airlines
Sun 9/139:05 am
CRL
- SEA
2 stops17h 50m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$942
This Mytrip deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/233:40 pm
SEA
- CRL
2 stops22h 15m
Multiple Airlines
Sun 8/308:35 am
CRL
- SEA
2 stops17h 35m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$972
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:40 pm
SEA
- CRL
2 stops22h 15m
Multiple Airlines
Sun 10/119:05 am
CRL
- SEA
2 stops17h 50m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$990
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated June 24, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated June 24, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Tue 6/301:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/21![Icelandair logo]()
$857
This FlightHub deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 6/291:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 6/21![Icelandair logo]()
$859
This Cheapflightsfares deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/73:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Tue 7/141:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/20![Icelandair logo]()
$778
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/193:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Sun 7/269:05 am
CRL
- SEA
2 stops34h 35m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$962
This Gotogate deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/273:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 8/121:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/21![Icelandair logo]()
$616
This Gotogate deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2710:45 am
SEA
- BRU
2 stops35h 25m
Air Canada
Wed 8/129:30 am
BRU
- SEA
2 stops22h 12m
Air Canada
Deal found 6/21![Air Canada logo]()
$820
This United deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:00 am
SEA
- BRU
2 stops21h 15m
Multiple Airlines
Wed 8/129:30 am
BRU
- SEA
2 stops22h 12m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$847
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:02 am
SEA
- BRU
2 stops17h 13m
United Airlines
Wed 8/1212:00 pm
BRU
- SEA
1 stop37h 06m
United Airlines
Deal found 6/21![United Airlines logo]()
$849
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Wed 8/128:00 am
CRL
- SEA
2 stops18h 10m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$1,092
This oojo deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:50 pm
SEA
- BRU
1 stop12h 25m
Lufthansa
Fri 8/712:45 pm
BRU
- SEA
1 stop13h 14m
Lufthansa
Deal found 6/22![Lufthansa logo]()
$845
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/308:45 am
SEA
- BRU
2 stops19h 30m
United Airlines
Fri 8/79:35 am
BRU
- SEA
1 stop16h 24m
United Airlines
Deal found 6/22![United Airlines logo]()
$863
This Gotogate deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:45 am
SEA
- BRU
2 stops16h 25m
Multiple Airlines
Fri 8/712:45 pm
BRU
- SEA
1 stop13h 14m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$852
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 June 24, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated June 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/203:40 pm
SEA
- CRL
2 stops31h 45m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/233:40 pm
SEA
- BRU
2 stops32h 30m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/133:40 pm
SEA
- CRL
2 stops31h 45m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2411:25 pm
SEA
- BRU
2 stops48h 35m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/193:40 pm
SEA
- CRL
3 stops36h 10m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1111:25 pm
SEA
- BRU
2 stops48h 45m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:40 pm
SEA
- BRU
2 stops32h 55m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$251
This oojo deal was found by Cheapflights users on 6/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/23![Icelandair logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1111:25 pm
SEA
- CRL
2 stops36h 50m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 6/23. 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.
Sat 7/1811:25 pm
SEA
- CRL
2 stops36h 50m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1411:25 pm
SEA
- CRL
2 stops48h 15m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 6/23. 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.
Fri 7/1711:25 pm
SEA
- BRU
2 stops49h 15m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$262
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 June 24, 2026.
Round-trip from | $561 (Gotogate) |
|---|---|
One-way from | $232 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,284 |
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 June 24, 2026.
Use the filters below to find and compare flights from Seattle to Belgium that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 9/1
11:25 pm-12:55 pm
1 stop28h 30m
Brussels Bruxelles-National
Wed 9/9
1:50 pm-5:55 pm
1 stop13h 05m
$580
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/11
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Thu 10/15
1:50 pm-8:40 pm
1 stop15h 50m
$595
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Sun 8/30
3:40 pm-9:15 pm
2 stops20h 35m
Charleroi Brussels
Tue 9/15
6:55 am-9:40 am
3 stops35h 45m
$699
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 11/15
11:15 am-2:15 pm
2 stops18h 00m
Brussels Bruxelles-National
Tue 11/24
8:05 am-11:47 am
1 stop12h 42m
$733
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/3
7:00 am-9:00 am
1 stop17h 00m
Brussels Bruxelles-National
Wed 8/19
7:40 pm-6:32 pm
2 stops31h 52m
$746
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/17
11:59 pm-7:40 am
1 stop22h 41m
Brussels Bruxelles-National
Mon 8/31
3:10 pm-11:47 am
1 stop29h 37m
$749
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Mon 8/17
7:00 pm-10:55 pm
3 stops18h 55m
Charleroi Brussels
Mon 8/31
9:15 pm-9:07 pm
3 stops32h 52m
$766
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 8/30
1:57 pm-9:00 am
1 stop34h 03m
Brussels Bruxelles-National
Wed 9/16
9:10 am-10:07 am
2 stops33h 57m
$768
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/3
3:40 pm-8:00 pm
2 stops19h 20m
Brussels Bruxelles-National
Wed 8/19
2:25 pm-11:55 am
1 stop30h 30m
$771
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Sun 8/30
3:40 pm-9:15 pm
2 stops20h 35m
Charleroi Brussels
Wed 9/16
9:20 am-10:42 pm
3 stops22h 22m
$774
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 $375). Flying from Seattle to Belgium in June is currently the most expensive (average of $693). 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.
How far ahead should I book a flight from Seattle to Belgium?
Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Belgium. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 June 24, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, 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
7.8
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - 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
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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 June 24, 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 6 airlines flying from Seattle to Belgium
Discover the top 6 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 June 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$522 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$620 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$733 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$713 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$709 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$494 | Average$663 | FlexibilityNo cancel fee | On-time76% |