$281+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
May 11 — May 181
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 11, 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 11, 2026.
This Gotogate deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/8![Icelandair logo]()
$581
This Gotogate deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/237:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/9![Icelandair logo]()
$594
This Gotogate deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/117:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 5/201:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/10![Icelandair logo]()
$628
This FlightHub deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/297:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Thu 5/77:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/6![Turkish Airlines logo]()
$637
This Gotogate deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 10/231:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/10![Icelandair logo]()
$642
This KAYAK deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Wed 4/223:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Tue 5/261:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/7![Icelandair logo]()
$651
This KAYAK deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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.
Wed 4/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/211:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/10![Icelandair logo]()
$653
This Gotogate deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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.
Sun 9/137:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 9/201:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/8![Icelandair logo]()
$654
This KAYAK deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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.
Wed 4/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 4/10![Icelandair logo]()
$655
This oojo deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/163:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 4/231:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/6![Icelandair logo]()
$656
This Mytrip deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/273:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Wed 5/139:20 am
CRL
- SEA
2 stops20h 48m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$817
This Mytrip deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/237:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Thu 5/76:35 am
CRL
- SEA
2 stops18h 25m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$860
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 11, 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 11, 2026.
This Turkish Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 10/17:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Tue 10/67:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/6![Turkish Airlines logo]()
$659
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 9/158:50 am
SEA
- BRU
3 stops19h 25m
United Airlines
Tue 9/227:00 am
BRU
- SEA
2 stops16h 22m
United Airlines
Deal found 4/6![United Airlines logo]()
$781
This Mytrip deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/273:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Wed 5/139:20 am
CRL
- SEA
2 stops20h 48m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$817
This British Airways deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/183:17 pm
SEA
- BRU
2 stops18h 53m
British Airways
Mon 6/158:50 pm
BRU
- SEA
1 stop23h 45m
British Airways
Deal found 4/7![British Airways logo]()
$965
This Delta deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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.
Thu 8/139:30 am
SEA
- BRU
2 stops20h 10m
Delta
Wed 8/266:20 am
BRU
- SEA
1 stop14h 17m
Delta
Deal found 4/10![Delta logo]()
$1,091
This Mytrip deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/237:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Thu 5/76:35 am
CRL
- SEA
2 stops18h 25m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$860
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:10 am
SEA
- BRU
2 stops26h 50m
United Airlines
Tue 5/57:00 am
BRU
- SEA
2 stops16h 20m
United Airlines
Deal found 4/6![United Airlines logo]()
$870
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/213:45 pm
SEA
- BRU
2 stops19h 15m
United Airlines
Wed 5/2710:15 am
BRU
- SEA
2 stops19h 38m
United Airlines
Deal found 4/7![United Airlines logo]()
$899
This Mytrip deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/73:40 pm
SEA
- CRL
2 stops20h 50m
Multiple Airlines
Wed 5/139:20 am
CRL
- SEA
2 stops20h 48m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$934
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/213:45 pm
SEA
- BRU
2 stops19h 15m
United Airlines
Fri 5/2210:15 am
BRU
- SEA
1 stop21h 24m
United Airlines
Deal found 4/7![United Airlines logo]()
$899
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Wed 4/223:48 pm
SEA
- BRU
2 stops19h 12m
United Airlines
Fri 5/2210:15 am
BRU
- SEA
1 stop17h 51m
United Airlines
Deal found 4/7![United Airlines logo]()
$903
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 7/67:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Wed 7/157:40 pm
CRL
- SEA
2 stops27h 00m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$1,113
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 7/127:10 pm
SEA
- CRL
1 stop17h 05m
Multiple Airlines
Wed 8/1211:50 am
CRL
- SEA
2 stops31h 50m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$1,119
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 6/163:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Thu 6/259:55 am
BRU
- SEA
1 stop20h 12m
United Airlines
Deal found 4/10![United Airlines logo]()
$1,043
This Kiwi.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 6/1210:30 am
SEA
- CRL
2 stops27h 15m
Multiple Airlines
Fri 6/199:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$1,131
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/251:30 pm
SEA
- BRU
2 stops21h 30m
United Airlines
Mon 6/19:40 am
BRU
- SEA
1 stop20h 28m
United Airlines
Deal found 4/10![United Airlines logo]()
$1,117
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:40 pm
SEA
- CRL
2 stops17h 55m
Multiple Airlines
Fri 5/229:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$1,137
This Mytrip deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” 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 4/243:40 pm
SEA
- CRL
2 stops16h 20m
Multiple Airlines
Thu 5/76:35 am
CRL
- SEA
2 stops18h 25m
Multiple Airlines
Deal found 4/11![Multiple Airlines logo]()
$1,259
This Mytrip deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/1110:45 am
SEA
- CRL
3 stops19h 50m
Multiple Airlines
Tue 5/1910:00 pm
CRL
- SEA
3 stops32h 08m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$1,292
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated April 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated April 11, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/163:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 4/231:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/6![Icelandair logo]()
$656
This KAYAK deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Wed 4/223:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Tue 5/261:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/7![Icelandair logo]()
$651
This KAYAK deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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.
Wed 4/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/211:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/10![Icelandair logo]()
$653
This KAYAK deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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.
Wed 4/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 4/10![Icelandair logo]()
$655
This Gotogate deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/237:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/9![Icelandair logo]()
$594
This Mytrip deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/237:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Thu 5/76:35 am
CRL
- SEA
2 stops18h 25m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$860
This Gotogate deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/8![Icelandair logo]()
$581
This Mytrip deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/273:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Wed 5/139:20 am
CRL
- SEA
2 stops20h 48m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$817
This FlightHub deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/297:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Thu 5/77:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/6![Turkish Airlines logo]()
$637
This oojo deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/307:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/6![Icelandair logo]()
$673
This Mytrip deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/73:40 pm
SEA
- CRL
2 stops20h 50m
Multiple Airlines
Wed 5/139:20 am
CRL
- SEA
2 stops20h 48m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$934
This Gotogate deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/117:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 5/201:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/10![Icelandair logo]()
$628
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 11, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated April 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/107:00 pm
SEA
- CRL
3 stops39h 55m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:00 pm
SEA
- CRL
3 stops28h 45m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/177:00 pm
SEA
- CRL
3 stops42h 55m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$298
This Trip.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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.
Wed 5/137:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 4/9![Icelandair logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:00 pm
SEA
- CRL
3 stops28h 20m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 4/9![Icelandair logo]()
$307
This oojo deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 9/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 4/8![Icelandair logo]()
$309
This oojo deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 9/237:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 4/8![Icelandair logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:00 pm
SEA
- BRU
2 stops30h 15m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:00 pm
SEA
- CRL
3 stops39h 40m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:00 pm
SEA
- BRU
3 stops29h 55m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$321
This KAYAK deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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.
Fri 9/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 4/8![Icelandair logo]()
$322
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 11, 2026.
Round-trip from | $581 (Gotogate) |
|---|---|
One-way from | $281 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $559 |
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 11, 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
Thu 10/1
7:10 pm-9:25 pm
1 stop17h 15m
Brussels Bruxelles-National
Tue 10/6
7:20 am-5:15 pm
1 stop18h 55m
$659
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 9/15
8:50 am-1:15 pm
3 stops19h 25m
Brussels Bruxelles-National
Tue 9/22
7:00 am-2:22 pm
2 stops16h 22m
$781
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Mon 4/27
3:40 pm-8:35 pm
2 stops19h 55m
Charleroi Brussels
Wed 5/13
9:20 am-9:08 pm
2 stops20h 48m
$817
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 4/23
7:00 pm-9:30 pm
2 stops17h 30m
Charleroi Brussels
Thu 5/7
6:35 am-4:00 pm
2 stops18h 25m
$860
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/30
8:10 am-8:00 pm
2 stops26h 50m
Brussels Bruxelles-National
Tue 5/5
7:00 am-2:20 pm
2 stops16h 20m
$870
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 4/21
3:45 pm-8:00 pm
2 stops19h 15m
Brussels Bruxelles-National
Wed 5/27
10:15 am-8:53 pm
2 stops19h 38m
$899
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 4/21
3:45 pm-8:00 pm
2 stops19h 15m
Brussels Bruxelles-National
Fri 5/22
10:15 am-10:39 pm
1 stop21h 24m
$899
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 4/22
3:48 pm-8:00 pm
2 stops19h 12m
Brussels Bruxelles-National
Fri 5/22
10:15 am-7:06 pm
1 stop17h 51m
$903
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 5/7
3:40 pm-9:30 pm
2 stops20h 50m
Charleroi Brussels
Wed 5/13
9:20 am-9:08 pm
2 stops20h 48m
$934
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 5/18
3:17 pm-7:10 pm
2 stops18h 53m
Brussels Bruxelles-National
Mon 6/15
8:50 pm-11:35 am
1 stop23h 45m
$965
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, January is the cheapest month in which you can book a flight from Seattle to Belgium (average of $378). Flying from Seattle to Belgium in June is currently the most expensive (average of $505). 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 11, 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
Overall
7.9
Boarding
8.1
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Boarding
8.1
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Boarding
8.1
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Boarding
8.1
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Boarding
8.1
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Overall
7.9
Boarding
8.1
Comfort
7.9
Crew
8.5
Food
7.2
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 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to Belgium flights
Consider these flights traveling from Seattle to Belgium.
Top 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 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$481 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$689 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$733 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$699 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$632 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$488 | Average$491 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$494 | Average$645 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$518 | Average$680 | FlexibilityNo cancel fee | On-time67% |