$230+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Jul 1 — Jul 81
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Belgium with Cheapflights
1. Tell us where you want to go
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Cheapest flights from Seattle to BelgiumExplore the most affordable flight options available from Seattle to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 1, 2026.
Explore the most affordable flight options available from Seattle to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 1, 2026.
This Mytrip deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 10/43:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Mon 10/191:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/31![Icelandair logo]()
$517
This oojo deal was found by Cheapflights users on 5/29. 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 5/29![Icelandair logo]()
$522
This oojo deal was found by Cheapflights users on 5/30. 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 10/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 10/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/30![Icelandair logo]()
$523
This oojo deal was found by Cheapflights users on 5/29. 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 5/29![Icelandair logo]()
$524
This FlightHub deal was found by Cheapflights users on 5/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 10/181:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/30![Icelandair logo]()
$529
This oojo deal was found by Cheapflights users on 5/30. 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 9/13:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/30![Icelandair logo]()
$534
This oojo deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 9/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 9/301:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/31![Icelandair logo]()
$536
This Gotogate deal was found by Cheapflights users on 5/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Tue 12/2212:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 5/29![Icelandair logo]()
$544
This Kiwi.com deal was found by Cheapflights users on 5/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 10/221:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/30![Icelandair logo]()
$549
This Icelandair deal was found by Cheapflights users on 5/27. 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.
Wed 10/73:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 10/161:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/27![Icelandair logo]()
$550
This Kiwi.com deal was found by Cheapflights users on 5/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/30![Icelandair logo]()
$551
This Mytrip deal was found by Cheapflights users on 5/30. 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.
Thu 6/43:00 pm
SEA
- CRL
3 stops21h 30m
Multiple Airlines
Thu 6/117:05 am
CRL
- SEA
2 stops23h 03m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$654
Best flights from Seattle to BelgiumDiscover carefully curated flight deals from Seattle to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 1, 2026.
Discover carefully curated flight deals from Seattle to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 1, 2026.
This oojo deal was found by Cheapflights users on 5/26. 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 10/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/26![Icelandair logo]()
$523
This Lufthansa deal was found by Cheapflights users on 5/27. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am
SEA
- BRU
1 stop16h 55m
Lufthansa
Sat 11/147:00 am
BRU
- SEA
1 stop14h 00m
Lufthansa
Deal found 5/27![Lufthansa logo]()
$731
This United Airlines deal was found by Cheapflights users on 5/27. 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.
Sun 11/18:00 am
SEA
- BRU
1 stop14h 15m
United Airlines
Mon 11/1611:55 am
BRU
- SEA
1 stop17h 15m
United Airlines
Deal found 5/27![United Airlines logo]()
$734
This Justfly.com deal was found by Cheapflights users on 5/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:40 am
SEA
- BRU
2 stops16h 30m
Multiple Airlines
Thu 10/297:00 am
BRU
- SEA
1 stop14h 00m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$784
This Turkish Airlines deal was found by Cheapflights users on 5/27. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:15 pm
SEA
- BRU
1 stop17h 10m
Turkish Airlines
Thu 10/157:20 am
BRU
- SEA
1 stop19h 00m
Turkish Airlines
Deal found 5/27![Turkish Airlines logo]()
$839
This Delta deal was found by Cheapflights users on 5/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2611:59 pm
SEA
- BRU
1 stop22h 41m
Delta
Thu 8/68:05 am
BRU
- SEA
1 stop12h 32m
Delta
Deal found 5/29![Delta logo]()
$891
This Icelandair deal was found by Cheapflights users on 5/27. 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 11/22:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Tue 11/1012:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 5/27![Icelandair logo]()
$590
This Cheapflightsfares deal was found by Cheapflights users on 5/26. 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.
Mon 10/58:10 am
SEA
- BRU
1 stop14h 05m
Lufthansa
Thu 10/156:20 am
BRU
- SEA
2 stops17h 02m
Lufthansa
Deal found 5/26![Lufthansa logo]()
$775
This United Airlines deal was found by Cheapflights users on 5/27. 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 10/57:11 am
SEA
- BRU
2 stops21h 04m
United Airlines
Thu 10/156:20 am
BRU
- SEA
1 stop15h 00m
United Airlines
Deal found 5/27![United Airlines logo]()
$782
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 9/1510:58 pm
SEA
- BRU
1 stop23h 47m
United Airlines
Tue 9/296:20 am
BRU
- SEA
1 stop14h 35m
United Airlines
Deal found 5/31![United Airlines logo]()
$785
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 10/47:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Mon 10/1910:00 pm
CRL
- SEA
2 stops29h 45m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$911
This Mytrip deal was found by Cheapflights users on 5/27. 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.
Sun 8/233:40 pm
SEA
- CRL
3 stops22h 05m
Multiple Airlines
Sat 8/298:25 am
CRL
- SEA
2 stops34h 15m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$990
This Icelandair deal was found by Cheapflights users on 5/29. 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.
Tue 6/1611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 6/221:50 pm
BRU
- SEA
2 stops39h 47m
Icelandair
Deal found 5/29![Icelandair logo]()
$1,057
This United Airlines deal was found by Cheapflights users on 5/29. 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.
Mon 7/207:30 am
SEA
- BRU
1 stop15h 15m
United Airlines
Tue 7/289:55 am
BRU
- SEA
1 stop20h 12m
United Airlines
Deal found 5/29![United Airlines logo]()
$990
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 8/105:30 pm
SEA
- CRL
1 stop15h 20m
Multiple Airlines
Mon 8/318:50 am
CRL
- SEA
2 stops16h 10m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,005
This Mytrip deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 9/167:10 pm
SEA
- CRL
2 stops18h 05m
Multiple Airlines
Tue 9/226:55 am
CRL
- SEA
3 stops44h 50m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,011
This Mytrip deal was found by Cheapflights users on 5/30. 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.
Wed 10/73:40 pm
SEA
- CRL
2 stops21h 35m
Multiple Airlines
Mon 11/99:20 am
CRL
- SEA
2 stops16h 35m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,017
This Mytrip deal was found by Cheapflights users on 5/27. 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
Wed 9/91:15 pm
CRL
- SEA
3 stops35h 45m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$1,075
This Kiwi.com deal was found by Cheapflights users on 5/29. 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.
Sun 7/197:10 pm
SEA
- CRL
1 stop17h 05m
Multiple Airlines
Tue 7/287:15 pm
CRL
- SEA
2 stops30h 55m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,121
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
Mon 7/207:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Wed 8/59:55 pm
CRL
- SEA
2 stops28h 25m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$1,167
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated June 1, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated June 1, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 5/30. 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 6/311:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Thu 6/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/30![Icelandair logo]()
$846
This Mytrip deal was found by Cheapflights users on 5/30. 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.
Thu 6/45:45 am
SEA
- CRL
3 stops30h 45m
Multiple Airlines
Thu 6/117:05 am
CRL
- SEA
3 stops36h 00m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$654
This Gotogate deal was found by Cheapflights users on 5/28. 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.
Wed 6/1011:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Thu 6/181:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/28![Icelandair logo]()
$793
This Mytrip deal was found by Cheapflights users on 5/28. 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.
Wed 6/105:45 am
SEA
- CRL
3 stops25h 00m
Multiple Airlines
Thu 6/186:35 am
CRL
- SEA
3 stops23h 32m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$996
This Gotogate deal was found by Cheapflights users on 5/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 6/241:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/29![Icelandair logo]()
$770
This oojo deal was found by Cheapflights users on 5/28. 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.
Fri 6/123:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 6/241:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/28![Icelandair logo]()
$894
This Mytrip deal was found by Cheapflights users on 5/29. 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 6/1210:45 am
SEA
- CRL
3 stops27h 00m
Multiple Airlines
Wed 6/249:10 am
CRL
- SEA
3 stops22h 32m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,192
This oojo deal was found by Cheapflights users on 5/29. 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.
Sat 6/133:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sat 6/201:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 5/29![Icelandair logo]()
$896
This oojo deal was found by Cheapflights users on 5/29. 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 6/1611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Thu 6/251:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/29![Icelandair logo]()
$699
This oojo deal was found by Cheapflights users on 5/27. 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.
Wed 6/173:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 6/251:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/27![Icelandair logo]()
$845
This oojo deal was found by Cheapflights users on 5/27. 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.
Thu 6/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 6/261:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 5/27![Icelandair logo]()
$799
This Gotogate deal was found by Cheapflights users on 5/28. 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.
Sat 6/203:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sat 6/271:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/28![Icelandair logo]()
$771
One-way flights from Seattle to BelgiumSearch for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated June 1, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated June 1, 2026.
This oojo deal was found by Cheapflights users on 5/30. 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 10/137:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 5/30![Icelandair logo]()
$230
This oojo deal was found by Cheapflights users on 5/30. 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 5/30![Icelandair logo]()
$238
This oojo deal was found by Cheapflights users on 5/27. 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.
Thu 7/911:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 5/27![Icelandair logo]()
$242
This FlightHub deal was found by Cheapflights users on 5/27. 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.
Wed 7/83:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 5/27![Icelandair logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 7/63:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 5/27![Icelandair logo]()
$254
This Icelandair deal was found by Cheapflights users on 5/29. 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 5/29![Icelandair logo]()
$255
This Icelandair deal was found by Cheapflights users on 5/29. 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.
Wed 8/267:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 5/29![Icelandair logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 7/611:25 pm
SEA
- CRL
3 stops24h 20m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 11/192:35 pm
SEA
- CRL
3 stops23h 05m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 5/29. 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.
Thu 7/233:40 pm
SEA
- CRL
3 stops22h 05m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 7/73:40 pm
SEA
- CRL
3 stops21h 45m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 7/103:40 pm
SEA
- CRL
3 stops21h 55m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$379
Find flight deals from Seattle to Belgium
Keep the following information in mind while searching for Seattle to Belgium flight deals. Data was last updated June 1, 2026.
Round-trip from | $517 (Mytrip) |
|---|---|
One-way from | $230 (oojo) |
Popular in | June |
Cheapest in | January |
Average price | $948 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Belgium that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 1, 2026.
Use the filters below to find and compare flights from Seattle to Belgium that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/5
7:00 pm-12:55 pm
1 stop32h 55m
Brussels Bruxelles-National
Thu 10/15
1:50 pm-5:55 pm
1 stop13h 05m
$523
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 11/2
2:35 pm-11:55 am
1 stop12h 20m
Brussels Bruxelles-National
Tue 11/10
12:50 pm-5:00 pm
1 stop13h 10m
$590
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 11/2
7:00 am-8:55 am
1 stop16h 55m
Brussels Bruxelles-National
Sat 11/14
7:00 am-12:00 pm
1 stop14h 00m
$731
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 11/1
8:00 am-7:15 am
1 stop14h 15m
Brussels Bruxelles-National
Mon 11/16
11:55 am-8:10 pm
1 stop17h 15m
$734
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/5
8:10 am-7:15 am
1 stop14h 05m
Brussels Bruxelles-National
Thu 10/15
6:20 am-2:22 pm
2 stops17h 02m
$775
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/5
7:11 am-1:15 pm
2 stops21h 04m
Brussels Bruxelles-National
Thu 10/15
6:20 am-12:20 pm
1 stop15h 00m
$782
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/18
5:40 am-7:10 am
2 stops16h 30m
Brussels Bruxelles-National
Thu 10/29
7:00 am-1:00 pm
1 stop14h 00m
$784
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 9/15
10:58 pm-7:45 am
1 stop23h 47m
Brussels Bruxelles-National
Tue 9/29
6:20 am-11:55 am
1 stop14h 35m
$785
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 10/8
7:15 pm-9:25 pm
1 stop17h 10m
Brussels Bruxelles-National
Thu 10/15
7:20 am-5:20 pm
1 stop19h 00m
$839
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 7/26
11:59 pm-7:40 am
1 stop22h 41m
Brussels Bruxelles-National
Thu 8/6
8:05 am-11:37 am
1 stop12h 32m
$891
Showing 1-10 of 34 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-BRU
SEA-CRL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Belgium
SEA-BE0
SEA-BRU
SEA-CRL
What is the cheapest month to book a flight from Seattle to Belgium?
Currently, August is the cheapest month in which you can book a flight from Seattle to Belgium (average of $362). Flying from Seattle to Belgium in June is currently the most expensive (average of $693). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Seattle to Belgium?
Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Belgium. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Belgium
Get insights into the airlines that provide service to Belgium. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belgium. Reviews last updated June 1, 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.
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Seattle to Belgium
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Belgium by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Belgium by cabin class
Find flights from Seattle to Belgium, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Belgium flights
Browse other Seattle and Belgium flight options. Last updated on June 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Seattle to Belgium
Discover the top 6 airlines that operate flights from Seattle to Belgium. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$494 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$621 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$741 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$719 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$642 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$494 | Average$663 | FlexibilityNo cancel fee | On-time76% |