$238+ 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
Aug 29 — Sep 51
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 July 30, 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 July 30, 2026.
This Expedia deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:18 am
SEA
- BRU
2 stops16h 17m
Multiple Airlines
Fri 11/1310:15 am
BRU
- SEA
2 stops18h 29m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$524
This Gotogate deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/217:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 10/41:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/30![Icelandair logo]()
$557
This Cheapflightsfares deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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.
Sat 10/103:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 10/231:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/29![Icelandair logo]()
$559
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 7/29![Icelandair logo]()
$560
This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 Cheapflightsfares 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
Sat 10/241:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/26![Icelandair logo]()
$564
This oojo deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 stop13h 05m
Icelandair
Deal found 7/28![Icelandair logo]()
$565
This Mytrip deal was found by Cheapflights users on 7/26. 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 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/26![Icelandair logo]()
$569
This oojo deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/28![Icelandair logo]()
$583
This FlightHub deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 8/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$584
This oojo deal was found by Cheapflights users on 7/25. 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.
Wed 9/23:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/25![Icelandair logo]()
$585
This oojo deal was found by Cheapflights users on 7/25. 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 stop30h 55m
Icelandair
Deal found 7/25![Icelandair logo]()
$586
This Mytrip deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Mon 8/318:50 am
CRL
- SEA
2 stops20h 50m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$612
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 July 30, 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 July 30, 2026.
This Mytrip deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Mon 8/318:50 am
CRL
- SEA
2 stops20h 50m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$612
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Tue 11/310:50 am
SEA
- BRU
2 stops17h 25m
United Airlines
Tue 11/1010:00 am
BRU
- SEA
2 stops35h 19m
United Airlines
Deal found 7/26![United Airlines logo]()
$708
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:00 am
SEA
- BRU
1 stop20h 00m
Delta
Tue 11/106:10 am
BRU
- SEA
1 stop14h 37m
Delta
Deal found 7/28![Delta logo]()
$729
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Tue 11/175:05 am
SEA
- BRU
2 stops18h 50m
United Airlines
Wed 11/184:55 pm
BRU
- SEA
2 stops36h 52m
United Airlines
Deal found 7/26![United Airlines logo]()
$763
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/213:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Sun 10/49:05 am
CRL
- SEA
2 stops20h 35m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$782
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Mon 8/312:25 pm
BRU
- SEA
1 stop30h 30m
United Airlines
Deal found 7/27![United Airlines logo]()
$771
This United deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:42 am
SEA
- BRU
1 stop13h 18m
Multiple Airlines
Mon 9/147:30 pm
BRU
- SEA
1 stop30h 29m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$800
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 10/123:00 pm
SEA
- BRU
2 stops37h 15m
United Airlines
Thu 10/159:55 am
BRU
- SEA
1 stop20h 09m
United Airlines
Deal found 7/25![United Airlines logo]()
$779
This Mytrip deal was found by Cheapflights users on 7/26. 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.
Wed 10/213:40 pm
SEA
- CRL
3 stops21h 35m
Multiple Airlines
Wed 10/286:20 am
CRL
- SEA
3 stops40h 00m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$833
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:55 pm
SEA
- CRL
2 stops18h 40m
Multiple Airlines
Mon 9/148:15 pm
CRL
- SEA
2 stops26h 30m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$897
This Mytrip deal was found by Cheapflights users on 7/26. 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.
Tue 10/132:10 pm
SEA
- CRL
2 stops23h 45m
Multiple Airlines
Wed 10/216:50 am
CRL
- SEA
2 stops19h 09m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$917
This Mytrip deal was found by Cheapflights users on 7/26. 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.
Tue 10/67:00 pm
SEA
- CRL
3 stops18h 55m
Multiple Airlines
Wed 10/149:20 am
CRL
- SEA
2 stops20h 44m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$954
This Mytrip deal was found by Cheapflights users on 7/26. 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 10/163:40 pm
SEA
- CRL
2 stops14h 50m
Multiple Airlines
Sun 10/257:45 am
CRL
- SEA
3 stops38h 35m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$957
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Fri 9/49:50 am
CRL
- SEA
2 stops32h 50m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$964
Last-minute flights from Seattle to BrusselsDiscover last-minute flight deals from Seattle to Brussels. Data last updated July 30, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Brussels. Data last updated July 30, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 7/26. 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 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/26![Icelandair logo]()
$569
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Sun 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 9/41:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/27![Icelandair logo]()
$607
This Icelandair deal was found by Cheapflights users on 7/27. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 9/31:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/27![Icelandair logo]()
$610
This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sat 9/51:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/27![Icelandair logo]()
$637
This Icelandair deal was found by Cheapflights users on 7/27. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/27![Icelandair logo]()
$662
This Icelandair deal was found by Cheapflights users on 7/27. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 9/31:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/27![Icelandair logo]()
$648
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/177:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 8/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$664
This FlightHub deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 8/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$584
This Icelandair deal was found by Cheapflights users on 7/27. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Sat 9/51:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/27![Icelandair logo]()
$660
This Icelandair deal was found by Cheapflights users on 7/27. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Thu 9/171:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/27![Icelandair logo]()
$685
This Mytrip deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Mon 8/318:50 am
CRL
- SEA
2 stops20h 50m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$612
This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/27![Icelandair logo]()
$641
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 July 30, 2026.
Search for one-way flight options from Seattle to Brussels. Find affordable one-way fares based on user searches. Data last updated July 30, 2026.
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 10/137:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$238
This oojo deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/28![Icelandair logo]()
$250
This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/27![Icelandair logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/211:25 pm
SEA
- BRU
2 stops48h 25m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/2911:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 7/27![Icelandair logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Wed 8/1911:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 7/27![Icelandair logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:00 pm
SEA
- BRU
3 stops29h 55m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Thu 10/157:00 pm
SEA
- CRL
3 stops27h 30m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 8/3111:25 pm
SEA
- CRL
3 stops24h 20m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Sun 8/237:00 pm
SEA
- CRL
3 stops29h 30m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Fri 8/2811:25 pm
SEA
- CRL
3 stops24h 20m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$298
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/23:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/29![Icelandair logo]()
$308
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 July 30, 2026.
Round-trip from | $520 (KAYAK) |
|---|---|
One-way from | $238 (oojo) |
Popular in | June |
Cheapest in | January |
Average price | $792 |
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 July 30, 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 - CRL
SEACRL
Seattle/Tacoma Intl
Mon 8/24
7:00 pm-8:35 pm
2 stops16h 35m
Charleroi Brussels
Mon 8/31
8:50 am-8:40 pm
2 stops20h 50m
$612
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 11/3
10:50 am-1:15 pm
2 stops17h 25m
Brussels Bruxelles-National
Tue 11/10
10:00 am-12:19 pm
2 stops35h 19m
$708
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 11/3
6:00 am-11:00 am
1 stop20h 00m
Brussels Bruxelles-National
Tue 11/10
6:10 am-11:47 am
1 stop14h 37m
$729
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 11/17
5:05 am-8:55 am
2 stops18h 50m
Brussels Bruxelles-National
Wed 11/18
4:55 pm-8:47 pm
2 stops36h 52m
$763
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/24
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Mon 8/31
2:25 pm-11:55 am
1 stop30h 30m
$771
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/12
3:00 pm-1:15 pm
2 stops37h 15m
Brussels Bruxelles-National
Thu 10/15
9:55 am-9:04 pm
1 stop20h 09m
$779
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Mon 9/21
3:40 pm-8:35 pm
2 stops19h 55m
Charleroi Brussels
Sun 10/4
9:05 am-8:40 pm
2 stops20h 35m
$782
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 9/8
10:42 am-9:00 am
1 stop13h 18m
Brussels Bruxelles-National
Mon 9/14
7:30 pm-4:59 pm
1 stop30h 29m
$800
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Wed 10/21
3:40 pm-10:15 pm
3 stops21h 35m
Charleroi Brussels
Wed 10/28
6:20 am-2:20 pm
3 stops40h 00m
$833
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 9/8
3:55 pm-7:35 pm
2 stops18h 40m
Charleroi Brussels
Mon 9/14
8:15 pm-1:45 pm
2 stops26h 30m
$897
Showing 1-10 of 27 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
What is the cheapest month to book a flight from Seattle to Brussels?
Currently, January is the cheapest month in which you can book a flight from Seattle to Brussels (average of $510). Flying from Seattle to Brussels in June is currently the most expensive (average of $1,284). 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?
Airfare is below average for this route at the moment.
Seattle to Brussels flights typically cost between $561 and $811 in January.The cheapest round-trip price found within the last 5 days was $520 on Multiple Airlines (Jan 22-Feb 12).
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 71 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 July 30, 2026.
Get a feel of what it's like to fly with KLM,Delta, 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.
Comfort
7.7
Overall
7.8
Food
7.3
Boarding
7.8
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Overall
7.8
Food
7.3
Boarding
7.8
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Overall
7.8
Food
7.3
Boarding
7.8
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Overall
7.8
Food
7.3
Boarding
7.8
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Overall
7.8
Food
7.3
Boarding
7.8
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Overall
7.8
Food
7.3
Boarding
7.8
Entertainment
7.2
Crew
8.4
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 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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Complete your trip
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Search flights from Seattle to Brussels by cabin class
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Seattle and Brussels flights
Browse other Seattle and Brussels flight options. Last updated on July 30, 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 July 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Seattle to Brussels
Discover the top 6 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 July 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$382 | Average$556 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$621 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$640 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$494 | Average$680 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$502 | Average$773 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$509 | Average$759 | FlexibilityNo cancel fee | On-timeN/A |