$302+ Cheap flights from Seattle (SEA) to Brussels
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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
May 27 — Jun 31
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Brussels with Cheapflights
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Cheapest flights from Seattle to BrusselsExplore the most affordable flight options available from Seattle to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 27, 2026.
Explore the most affordable flight options available from Seattle to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 27, 2026.
This CrystalTravel deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Tue 12/112:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 4/26![Icelandair logo]()
$602
This KAYAK deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Thu 12/312:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 4/26![Icelandair logo]()
$614
This KAYAK deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Tue 12/112:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 4/26![Icelandair logo]()
$644
This oojo deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo 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 4/26![Icelandair logo]()
$648
This Gotogate deal was found by Cheapflights users on 4/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/23![Icelandair logo]()
$656
This lastminute.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 4/25![Icelandair logo]()
$657
This Gotogate deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Tue 9/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/25![Icelandair logo]()
$658
This oojo deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/25![Icelandair logo]()
$664
This Icelandair deal was found by Cheapflights users on 4/22. 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 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 stop13h 05m
Icelandair
Deal found 4/22![Icelandair logo]()
$675
This Mytrip deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/281:30 pm
SEA
- CRL
3 stops24h 25m
Multiple Airlines
Wed 5/69:20 am
CRL
- SEA
3 stops33h 20m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$828
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:20 am
SEA
- CRL
2 stops29h 10m
Multiple Airlines
Wed 5/64:20 pm
CRL
- SEA
1 stop34h 25m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$854
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:20 am
SEA
- CRL
2 stops28h 15m
Multiple Airlines
Wed 5/64:20 pm
CRL
- SEA
1 stop34h 25m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$861
Best flights from Seattle to BrusselsDiscover carefully curated flight deals from Seattle to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 27, 2026.
Discover carefully curated flight deals from Seattle to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 27, 2026.
This oojo deal was found by Cheapflights users on 4/22. 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.
Wed 9/211:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/22![Icelandair logo]()
$665
This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:50 pm
SEA
- BRU
1 stop16h 05m
Lufthansa
Wed 9/99:25 am
BRU
- SEA
2 stops22h 17m
Lufthansa
Deal found 4/22![Lufthansa logo]()
$774
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:40 am
SEA
- BRU
2 stops29h 20m
United Airlines
Thu 10/297:00 am
BRU
- SEA
1 stop14h 10m
United Airlines
Deal found 4/23![United Airlines logo]()
$778
This FlightHub deal was found by Cheapflights users on 4/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:45 am
SEA
- BRU
2 stops16h 25m
Air Canada
Wed 9/99:25 am
BRU
- SEA
2 stops22h 17m
Air Canada
Deal found 4/22![Air Canada logo]()
$780
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/112:10 pm
SEA
- CRL
2 stops21h 25m
Multiple Airlines
Tue 5/196:15 pm
CRL
- SEA
1 stop32h 30m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$1,011
This Icelandair deal was found by Cheapflights users on 4/22. 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 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 stop13h 05m
Icelandair
Deal found 4/22![Icelandair logo]()
$675
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:02 am
SEA
- BRU
2 stops17h 13m
United Airlines
Tue 9/88:30 am
BRU
- SEA
1 stop12h 25m
United Airlines
Deal found 4/25![United Airlines logo]()
$782
This United Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1112:44 pm
SEA
- BRU
2 stops15h 31m
United Airlines
Thu 10/159:55 am
BRU
- SEA
1 stop20h 09m
United Airlines
Deal found 4/22![United Airlines logo]()
$868
This Mytrip deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:10 pm
SEA
- CRL
2 stops18h 05m
Multiple Airlines
Fri 9/119:50 am
CRL
- SEA
3 stops41h 55m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$1,018
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:05 am
SEA
- BRU
2 stops17h 40m
United Airlines
Tue 5/199:30 am
BRU
- SEA
2 stops18h 30m
United Airlines
Deal found 4/26![United Airlines logo]()
$870
This Mytrip deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:40 pm
SEA
- CRL
3 stops21h 55m
Multiple Airlines
Sat 10/1010:30 am
CRL
- SEA
2 stops19h 10m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$1,029
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:45 am
SEA
- CRL
3 stops30h 45m
Multiple Airlines
Sun 9/69:05 am
CRL
- SEA
2 stops17h 50m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$1,069
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Wed 9/99:10 am
CRL
- SEA
2 stops17h 45m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$1,127
This Mytrip deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm
SEA
- CRL
2 stops16h 30m
Multiple Airlines
Thu 10/297:35 am
CRL
- SEA
2 stops18h 25m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$1,181
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 7/195:40 pm
SEA
- CRL
1 stop19h 55m
Multiple Airlines
Tue 8/46:55 pm
CRL
- SEA
2 stops31h 20m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,195
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 7/195:40 pm
SEA
- CRL
1 stop19h 55m
Multiple Airlines
Fri 7/319:50 am
CRL
- SEA
2 stops17h 55m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,206
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 7/195:40 pm
SEA
- CRL
1 stop19h 55m
Multiple Airlines
Sun 8/26:55 pm
CRL
- SEA
2 stops31h 20m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,213
Last-minute flights from Seattle to BrusselsDiscover last-minute flight deals from Seattle to Brussels. Data last updated April 27, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Brussels. Data last updated April 27, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 4/277:10 pm
SEA
- BRU
1 stop37h 40m
Turkish Airlines
Tue 5/57:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/22![Turkish Airlines logo]()
$743
This FlightHub deal was found by Cheapflights users on 4/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Wed 5/67:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/22![Turkish Airlines logo]()
$760
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Thu 5/77:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/24![Turkish Airlines logo]()
$770
This oojo deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:10 pm
SEA
- BRU
1 stop30h 00m
Turkish Airlines
Mon 5/42:25 pm
BRU
- SEA
1 stop35h 50m
Turkish Airlines
Deal found 4/25![Turkish Airlines logo]()
$771
This Kiwi.com deal was found by Cheapflights users on 4/23. 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.
Tue 4/287:10 pm
SEA
- BRU
1 stop37h 20m
Turkish Airlines
Thu 5/77:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/23![Turkish Airlines logo]()
$744
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 4/287:10 pm
SEA
- BRU
1 stop30h 00m
Turkish Airlines
Tue 5/52:25 pm
BRU
- SEA
1 stop35h 50m
Turkish Airlines
Deal found 4/22![Turkish Airlines logo]()
$765
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
Wed 4/297:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/22![Icelandair logo]()
$702
This oojo deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:10 pm
SEA
- BRU
1 stop33h 15m
Turkish Airlines
Tue 5/127:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/25![Turkish Airlines logo]()
$732
This lastminute.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/211:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/27![Icelandair logo]()
$698
This lastminute.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 4/25![Icelandair logo]()
$657
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/171:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/24![Icelandair logo]()
$699
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:00 pm
SEA
- BRU
1 stop32h 55m
Multiple Airlines
Tue 5/197:45 pm
BRU
- SEA
2 stops32h 00m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$710
One-way flights from Seattle to BrusselsSearch for one-way flight options from Seattle to Brussels. Find affordable one-way fares based on user searches. Data last updated April 27, 2026.
Search for one-way flight options from Seattle to Brussels. Find affordable one-way fares based on user searches. Data last updated April 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/133:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$302
This oojo deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 4/27![Icelandair logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/133:40 pm
SEA
- BRU
2 stops17h 35m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$331
This Mytrip deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 4/27![Icelandair logo]()
$341
This CrystalTravel deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:20 pm
SEA
- BRU
1 stop15h 05m
British Airways
Deal found 4/26![British Airways logo]()
$351
This American Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:12 pm
SEA
- BRU
2 stops18h 58m
American Airlines
Deal found 4/27![American Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:25 pm
SEA
- BRU
2 stops33h 50m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:00 pm
SEA
- BRU
3 stops29h 20m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:25 pm
SEA
- CRL
3 stops31h 05m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:00 pm
SEA
- BRU
3 stops39h 50m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 4/23. 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.
Mon 6/2211:25 pm
SEA
- CRL
3 stops24h 20m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$395
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:33 pm
SEA
- BRU
2 stops19h 27m
United Airlines
Deal found 4/23![United Airlines logo]()
$398
Find flight deals from Seattle to Brussels
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Brussels (BR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 27, 2026.
Round-trip from | $648 (oojo) |
|---|---|
One-way from | $302 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $570 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Brussels 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 April 27, 2026.
Use the filters below to find and compare flights from Seattle to Brussels that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 9/2
11:25 pm-12:55 pm
1 stop28h 30m
Brussels Bruxelles-National
Wed 9/9
1:50 pm-8:40 pm
1 stop15h 50m
$665
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-5:55 pm
1 stop13h 05m
$675
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 9/2
6:50 pm-7:55 pm
1 stop16h 05m
Brussels Bruxelles-National
Wed 9/9
9:25 am-10:42 pm
2 stops22h 17m
$774
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/18
5:40 am-8:00 pm
2 stops29h 20m
Brussels Bruxelles-National
Thu 10/29
7:00 am-1:10 pm
1 stop14h 10m
$778
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 9/2
5:45 am-7:10 am
2 stops16h 25m
Brussels Bruxelles-National
Wed 9/9
9:25 am-10:42 pm
2 stops22h 17m
$780
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 8/4
11:02 am-1:15 pm
2 stops17h 13m
Brussels Bruxelles-National
Tue 9/8
8:30 am-11:55 am
1 stop12h 25m
$782
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/11
12:44 pm-1:15 pm
2 stops15h 31m
Brussels Bruxelles-National
Thu 10/15
9:55 am-9:04 pm
1 stop20h 09m
$868
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 5/11
5:05 am-7:45 am
2 stops17h 40m
Brussels Bruxelles-National
Tue 5/19
9:30 am-7:00 pm
2 stops18h 30m
$870
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Mon 5/11
2:10 pm-8:35 pm
2 stops21h 25m
Charleroi Brussels
Tue 5/19
6:15 pm-5:45 pm
1 stop32h 30m
$1,011
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Wed 9/2
7:10 pm-10:15 pm
2 stops18h 05m
Charleroi Brussels
Fri 9/11
9:50 am-6:45 pm
3 stops41h 55m
$1,018
Showing 1-10 of 29 resultsSorted by cheapest first
Best time to book a flight from Seattle to Brussels
Have a flexible travel schedule? Discover the best time to fly to Brussels from Seattle with our price prediction graph.
SEA-BR1
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 Brussels
SEA-BR1
SEA-BRU
SEA-CRL
How far ahead should I book a flight from Seattle to Brussels?
The price you pay for your flight from Seattle to Brussels may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Brussels?
Currently, August is the cheapest month in which you can book a flight from Seattle to Brussels (average of $219). Flying from Seattle to Brussels in June is currently the most expensive (average of $439). 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 much does it cost to fly round-trip from Seattle to Brussels?
Reviews of airlines servicing Brussels
Get insights into the airlines that provide service to Brussels. 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 Brussels. Reviews last updated April 27, 2026.
Get a feel of what it's like to fly with Delta,KLM, andUnited Airlines from Seattle to Brussels by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Seattle to Brussels. 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 Brussels
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Complete your trip
Complete your trip to Brussels by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Brussels by cabin class
Find flights from Seattle to Brussels, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Brussels flights
Browse other Seattle and Brussels flight options. Last updated on April 27, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on April 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from Seattle to Brussels
Discover the top 8 airlines that operate flights from Seattle to Brussels. 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 April 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$382 | Average$484 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$686 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$745 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$719 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$623 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$488 | Average$491 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$494 | Average$659 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$518 | Average$680 | FlexibilityNo cancel fee | On-time67% |