$298+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
May 30 — Jun 61
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 April 30, 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 April 30, 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 Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 10/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/28![Icelandair logo]()
$647
This oojo deal was found by Cheapflights users on 4/29. 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.
Sun 10/183:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/2912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 4/29![Icelandair logo]()
$648
This oojo deal was found by Cheapflights users on 4/29. 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 stop13h 05m
Icelandair
Deal found 4/29![Icelandair logo]()
$650
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 10/161:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/27![Icelandair logo]()
$652
This FlightHub 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 FlightHub 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
Fri 10/161:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/27![Icelandair logo]()
$654
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 Gotogate 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 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 4/26![Icelandair logo]()
$660
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Tue 8/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/28![Icelandair logo]()
$661
This oojo deal was found by Cheapflights users on 4/29. 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 9/211:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/29![Icelandair logo]()
$664
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 April 30, 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 April 30, 2026.
This Icelandair deal was found by Cheapflights users on 4/29. 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 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 4/29![Icelandair logo]()
$675
This CrystalTravel deal was found by Cheapflights users on 4/29. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:50 pm
SEA
- BRU
1 stop12h 25m
Lufthansa
Fri 9/119:25 am
BRU
- SEA
2 stops22h 17m
Lufthansa
Deal found 4/29![Lufthansa logo]()
$756
This Turkish Airlines deal was found by Cheapflights users on 4/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:10 pm
SEA
- BRU
1 stop35h 05m
Turkish Airlines
Fri 9/1111:10 am
BRU
- SEA
1 stop32h 30m
Turkish Airlines
Deal found 4/29![Turkish Airlines logo]()
$784
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 8/47:01 am
SEA
- BRU
1 stop16h 59m
United Airlines
Tue 9/88:30 am
BRU
- SEA
1 stop12h 25m
United Airlines
Deal found 4/25![United Airlines logo]()
$786
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Tue 8/253:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Wed 9/99:20 am
CRL
- SEA
3 stops42h 25m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$951
This United Airlines deal was found by Cheapflights users on 4/29. 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 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 10/156:20 am
BRU
- SEA
1 stop15h 00m
United Airlines
Deal found 4/29![United Airlines logo]()
$863
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/83:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 6/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/26![Icelandair logo]()
$954
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 4/30. 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 5/115:50 am
SEA
- CRL
3 stops29h 45m
Multiple Airlines
Mon 5/189:30 pm
CRL
- SEA
2 stops27h 10m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$1,015
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 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 stops18h 45m
Multiple Airlines
Sat 10/106:50 am
CRL
- SEA
3 stops43h 25m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$1,047
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/510:30 am
SEA
- CRL
2 stops27h 15m
Multiple Airlines
Wed 6/109:20 am
CRL
- SEA
2 stops20h 48m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$1,086
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 Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:00 am
SEA
- CRL
2 stops22h 30m
Multiple Airlines
Fri 6/56:35 pm
CRL
- SEA
2 stops30h 25m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$1,248
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated April 30, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated April 30, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:10 am
SEA
- BRU
1 stop14h 05m
United Airlines
Fri 5/89:55 am
BRU
- SEA
2 stops44h 11m
United Airlines
Deal found 4/29![United Airlines logo]()
$858
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 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.
Mon 5/41:21 pm
SEA
- BRU
2 stops21h 39m
United Airlines
Tue 5/129:55 am
BRU
- SEA
2 stops34h 44m
United Airlines
Deal found 4/25![United Airlines logo]()
$804
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:00 pm
SEA
- BRU
3 stops30h 40m
Multiple Airlines
Tue 5/128:45 am
BRU
- SEA
3 stops34h 20m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$816
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 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.
Thu 5/75:40 pm
SEA
- CRL
2 stops18h 50m
Multiple Airlines
Thu 5/2112:50 pm
CRL
- SEA
1 stop37h 55m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$947
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.
Mon 5/117:10 pm
SEA
- BRU
1 stop33h 15m
Turkish Airlines
Tue 5/196:50 pm
BRU
- SEA
1 stop31h 25m
Turkish Airlines
Deal found 4/26![Turkish Airlines logo]()
$815
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.
Mon 5/117:10 pm
SEA
- BRU
1 stop33h 15m
Turkish Airlines
Mon 5/186:50 pm
BRU
- SEA
1 stop31h 25m
Turkish Airlines
Deal found 4/27![Turkish Airlines logo]()
$854
This Justfly.com deal was found by Cheapflights users on 4/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:50 am
SEA
- BRU
2 stops16h 20m
Air Canada
Tue 5/199:40 am
BRU
- SEA
1 stop20h 28m
Air Canada
Deal found 4/29![Air Canada logo]()
$855
This Mytrip deal was found by Cheapflights users on 4/30. 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 5/115:50 am
SEA
- CRL
3 stops29h 45m
Multiple Airlines
Mon 5/189:30 pm
CRL
- SEA
2 stops27h 10m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$1,015
This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 6/151:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/30![Icelandair logo]()
$862
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Sun 5/3110:30 am
SEA
- CRL
3 stops25h 45m
Multiple Airlines
Tue 6/910:00 pm
CRL
- SEA
3 stops32h 08m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$1,108
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 April 30, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
This Gotogate deal was found by Cheapflights users on 4/30. 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.
Wed 8/2611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 4/30![Icelandair logo]()
$298
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.
Tue 9/17:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 4/27![Icelandair logo]()
$299
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 4/30. 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 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 4/30![Icelandair logo]()
$306
This Icelandair deal was found by Cheapflights users on 4/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/43:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 4/29![Icelandair logo]()
$318
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 Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:00 pm
SEA
- BRU
2 stops16h 30m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$338
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 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.
Tue 9/17:00 pm
SEA
- BRU
2 stops38h 15m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$342
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.
Tue 5/267:00 pm
SEA
- CRL
3 stops28h 55m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$347
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 Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Tue 6/231:55 pm
SEA
- CRL
2 stops37h 10m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$358
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 April 30, 2026.
Round-trip from | $647 (Gotogate) |
|---|---|
One-way from | $298 (Gotogate) |
Popular in | December |
Cheapest in | January |
Average price | $570 |
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 April 30, 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
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
$675
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 9/2
6:50 pm-4:15 pm
1 stop12h 25m
Brussels Bruxelles-National
Fri 9/11
9:25 am-10:42 pm
2 stops22h 17m
$756
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 9/2
7:10 pm-3:15 pm
1 stop35h 05m
Brussels Bruxelles-National
Fri 9/11
11:10 am-10:40 am
1 stop32h 30m
$784
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 8/4
7:01 am-9:00 am
1 stop16h 59m
Brussels Bruxelles-National
Tue 9/8
8:30 am-11:55 am
1 stop12h 25m
$786
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/11
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Thu 10/15
6:20 am-12:20 pm
1 stop15h 00m
$863
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
Tue 8/25
3:40 pm-9:15 pm
2 stops20h 35m
Charleroi Brussels
Wed 9/9
9:20 am-6:45 pm
3 stops42h 25m
$951
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 6/8
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Thu 6/18
1:50 pm-8:40 pm
1 stop15h 50m
$954
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Mon 5/11
5:50 am-8:35 pm
3 stops29h 45m
Charleroi Brussels
Mon 5/18
9:30 pm-3:40 pm
2 stops27h 10m
$1,015
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 26 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
How far ahead should I book a flight from Seattle to Belgium?
Booking 86 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.
What is the cheapest month to book a flight from Seattle to Belgium?
Currently, August is the cheapest month in which you can book a flight from Seattle to Belgium (average of $219). Flying from Seattle to Belgium 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.
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 April 30, 2026.
Peruse reviews from past customers who have flown with Delta,KLM, 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.
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
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 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 April 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from Seattle to Belgium
Discover the top 8 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 April 30, 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% |