$265+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
May 17 — May 241
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 17, 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 17, 2026.
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 4/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/16![Icelandair logo]()
$590
This Gotogate deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 stop13h 05m
Icelandair
Deal found 4/13![Icelandair logo]()
$601
This Booking.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:55 pm
SEA
- BRU
1 stop16h 50m
Aer Lingus
Tue 5/1910:20 am
BRU
- SEA
1 stop15h 50m
Aer Lingus
Deal found 4/13![Aer Lingus logo]()
$609
This KAYAK deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 4/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/16![Icelandair logo]()
$621
This KAYAK deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
Sun 4/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/16![Icelandair logo]()
$622
This Gotogate deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 10/153:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/2912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 4/16![Icelandair logo]()
$625
This Gotogate deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/137:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/171:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/16![Icelandair logo]()
$632
This FlightHub deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 4/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/16![Icelandair logo]()
$639
This KAYAK deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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.
Thu 10/153:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Tue 11/312:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 4/13![Icelandair logo]()
$645
This Mytrip deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:40 pm
SEA
- CRL
3 stops20h 35m
Multiple Airlines
Wed 5/209:20 am
CRL
- SEA
2 stops33h 20m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$776
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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
Fri 5/89:50 am
CRL
- SEA
3 stops41h 55m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$777
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 pm
SEA
- CRL
2 stops28h 05m
Multiple Airlines
Tue 5/196:15 pm
CRL
- SEA
1 stop32h 30m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$831
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 17, 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 17, 2026.
This Icelandair deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/16![Icelandair logo]()
$675
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 5/128:38 am
SEA
- BRU
3 stops19h 37m
United Airlines
Tue 5/1910:30 am
BRU
- SEA
2 stops17h 30m
United Airlines
Deal found 4/13![United Airlines logo]()
$762
This Turkish Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 5/67:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Fri 5/297:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$819
This Mytrip deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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
Mon 9/148:50 am
CRL
- SEA
2 stops20h 50m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$986
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 9/22:26 pm
SEA
- BRU
2 stops20h 34m
United Airlines
Mon 9/212:25 pm
BRU
- SEA
1 stop30h 30m
United Airlines
Deal found 4/13![United Airlines logo]()
$803
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/112:55 pm
SEA
- BRU
2 stops20h 05m
United Airlines
Tue 5/199:40 am
BRU
- SEA
1 stop20h 28m
United Airlines
Deal found 4/16![United Airlines logo]()
$849
This Mytrip deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:40 pm
SEA
- CRL
2 stops20h 50m
Multiple Airlines
Wed 10/78:00 am
CRL
- SEA
2 stops18h 55m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,018
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 4/307:00 am
SEA
- BRU
2 stops21h 15m
United Airlines
Tue 5/57:00 am
BRU
- SEA
2 stops20h 30m
United Airlines
Deal found 4/15![United Airlines logo]()
$872
This Mytrip deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” 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 9/297:00 pm
SEA
- CRL
3 stops18h 55m
Multiple Airlines
Wed 10/146:55 pm
CRL
- SEA
3 stops34h 45m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$1,025
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/128:51 am
SEA
- BRU
2 stops19h 24m
United Airlines
Sun 5/1710:15 am
BRU
- SEA
1 stop22h 44m
United Airlines
Deal found 4/16![United Airlines logo]()
$893
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 9/153:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Tue 9/228:50 pm
CRL
- SEA
3 stops33h 14m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,051
This Mytrip deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 9/26:50 pm
SEA
- CRL
2 stops16h 10m
Multiple Airlines
Fri 9/114:50 pm
CRL
- SEA
2 stops32h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,070
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 5/185:50 am
SEA
- BRU
2 stops29h 10m
United Airlines
Mon 6/159:55 am
BRU
- SEA
1 stop20h 13m
United Airlines
Deal found 4/15![United Airlines logo]()
$981
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/93:40 pm
SEA
- CRL
2 stops14h 40m
Multiple Airlines
Fri 5/299:50 am
CRL
- SEA
1 stop16h 20m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,116
This United Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” 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 6/15:50 am
SEA
- BRU
2 stops29h 10m
United Airlines
Thu 6/189:55 am
BRU
- SEA
1 stop20h 12m
United Airlines
Deal found 4/12![United Airlines logo]()
$1,043
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/317:10 pm
SEA
- CRL
1 stop17h 05m
Multiple Airlines
Fri 6/199:50 am
CRL
- SEA
2 stops17h 55m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,134
This Mytrip deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:10 pm
SEA
- CRL
2 stops23h 45m
Multiple Airlines
Sat 9/194:50 pm
CRL
- SEA
2 stops31h 50m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,136
This Mytrip deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 6/1710:30 am
SEA
- CRL
2 stops20h 15m
Multiple Airlines
Thu 6/258:00 pm
CRL
- SEA
3 stops46h 40m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,148
This Mytrip deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 5/163:40 pm
SEA
- CRL
2 stops21h 00m
Multiple Airlines
Mon 5/257:55 am
CRL
- SEA
2 stops34h 45m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,215
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated April 17, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:40 pm
SEA
- CRL
3 stops20h 35m
Multiple Airlines
Wed 5/209:20 am
CRL
- SEA
2 stops33h 20m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$776
This FlightHub deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 4/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/16![Icelandair logo]()
$639
This KAYAK deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 4/13![Icelandair logo]()
$653
This Gotogate deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 stop13h 05m
Icelandair
Deal found 4/13![Icelandair logo]()
$601
This KAYAK deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 4/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/16![Icelandair logo]()
$621
This KAYAK deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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 4/253:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/211:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/17![Icelandair logo]()
$652
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 4/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 5/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/16![Icelandair logo]()
$590
This KAYAK deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
Sun 4/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/16![Icelandair logo]()
$622
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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
Fri 5/89:50 am
CRL
- SEA
3 stops41h 55m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$777
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/171:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/16![Icelandair logo]()
$658
This Booking.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:55 pm
SEA
- BRU
1 stop16h 50m
Aer Lingus
Tue 5/1910:20 am
BRU
- SEA
1 stop15h 50m
Aer Lingus
Deal found 4/13![Aer Lingus logo]()
$609
This Gotogate deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/137:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/171:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/16![Icelandair logo]()
$632
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 17, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Mytrip deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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
Deal found 4/15![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 4/13![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 pm
SEA
- CRL
3 stops28h 40m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$282
This Mytrip deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 5/103:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 4/13![Icelandair logo]()
$286
This Mytrip deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 9/63:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 4/15![Icelandair logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 pm
SEA
- BRU
3 stops28h 35m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$301
This oojo deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 4/16![Icelandair logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 pm
SEA
- BRU
3 stops29h 20m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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
- BRU
3 stops29h 45m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$317
This Mytrip deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 5/67:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 4/14![Icelandair logo]()
$347
This Mytrip deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 5/127:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 4/13![Icelandair logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 9/67:00 pm
SEA
- BRU
2 stops30h 15m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$349
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 17, 2026.
Round-trip from | $609 (Booking.com) |
|---|---|
One-way from | $265 (Mytrip) |
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 17, 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-5:55 pm
1 stop13h 05m
$675
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 5/12
8:38 am-1:15 pm
3 stops19h 37m
Brussels Bruxelles-National
Tue 5/19
10:30 am-7:00 pm
2 stops17h 30m
$762
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 9/2
2:26 pm-8:00 pm
2 stops20h 34m
Brussels Bruxelles-National
Mon 9/21
2:25 pm-11:55 am
1 stop30h 30m
$803
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 5/6
7:10 pm-9:25 pm
1 stop17h 15m
Brussels Bruxelles-National
Fri 5/29
7:20 am-5:15 pm
1 stop18h 55m
$819
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 5/11
2:55 pm-8:00 pm
2 stops20h 05m
Brussels Bruxelles-National
Tue 5/19
9:40 am-9:08 pm
1 stop20h 28m
$849
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/30
7:00 am-1:15 pm
2 stops21h 15m
Brussels Bruxelles-National
Tue 5/5
7:00 am-6:30 pm
2 stops20h 30m
$872
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 5/12
8:51 am-1:15 pm
2 stops19h 24m
Brussels Bruxelles-National
Sun 5/17
10:15 am-11:59 pm
1 stop22h 44m
$893
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 5/18
5:50 am-8:00 pm
2 stops29h 10m
Brussels Bruxelles-National
Mon 6/15
9:55 am-9:08 pm
1 stop20h 13m
$981
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 8/25
3:40 pm-9:15 pm
2 stops20h 35m
Charleroi Brussels
Mon 9/14
8:50 am-8:40 pm
2 stops20h 50m
$986
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 9/24
3:40 pm-9:30 pm
2 stops20h 50m
Charleroi Brussels
Wed 10/7
8:00 am-5:55 pm
2 stops18h 55m
$1,018
Showing 1-10 of 32 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 $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 17, 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.
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Food
7.2
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
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 April 17, 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 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$480 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$689 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$741 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$713 | 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$647 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$518 | Average$680 | FlexibilityNo cancel fee | On-time67% |