$225+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Aug 16 — Aug 231
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 July 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 July 17, 2026.
This oojo deal was found by Cheapflights users on 7/15. 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 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 7/15![Icelandair logo]()
$526
This oojo deal was found by Cheapflights users on 7/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/15![Icelandair logo]()
$527
This oojo deal was found by Cheapflights users on 7/13. 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 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 7/13![Icelandair logo]()
$528
This Gotogate deal was found by Cheapflights users on 7/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/14![Icelandair logo]()
$530
This FlightHub deal was found by Cheapflights users on 7/16. 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.
Mon 11/22:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Tue 11/1012:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 7/16![Icelandair logo]()
$533
This Mytrip deal was found by Cheapflights users on 7/14. 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.
Tue 9/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/14![Icelandair logo]()
$538
This FlightHub deal was found by Cheapflights users on 7/16. 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 11/42:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Tue 11/1012:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 7/16![Icelandair logo]()
$548
This Mytrip deal was found by Cheapflights users on 7/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sun 10/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/17![Icelandair logo]()
$553
This Icelandair deal was found by Cheapflights users on 7/12. 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 Icelandair 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 10/221:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/12![Icelandair logo]()
$555
This oojo deal was found by Cheapflights users on 7/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/15![Icelandair logo]()
$561
This Mytrip deal was found by Cheapflights users on 7/15. 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.
Tue 9/83:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Mon 9/149:15 pm
CRL
- SEA
3 stops32h 49m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$797
This Mytrip deal was found by Cheapflights users on 7/12. 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 9/13:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Wed 9/95:30 pm
CRL
- SEA
3 stops33h 25m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$809
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 July 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 July 17, 2026.
This Icelandair deal was found by Cheapflights users on 7/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 8/271:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/17![Icelandair logo]()
$606
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Fri 11/610:52 am
SEA
- BRU
2 stops17h 23m
United Airlines
Wed 11/117:00 am
BRU
- SEA
1 stop14h 00m
United Airlines
Deal found 7/15![United Airlines logo]()
$725
This United deal was found by Cheapflights users on 7/16. 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 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 05m
Multiple Airlines
Mon 11/97:00 am
BRU
- SEA
1 stop14h 00m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$729
This Icelandair deal was found by Cheapflights users on 7/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 8/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/17![Icelandair logo]()
$607
This Icelandair deal was found by Cheapflights users on 7/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 8/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/17![Icelandair logo]()
$607
This United Airlines deal was found by Cheapflights users on 7/16. 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 8/183:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Tue 8/259:55 am
BRU
- SEA
2 stops39h 12m
United Airlines
Deal found 7/16![United Airlines logo]()
$733
This Mytrip deal was found by Cheapflights users on 7/15. 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.
Tue 9/83:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Mon 9/149:15 pm
CRL
- SEA
3 stops32h 49m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$797
This United Airlines deal was found by Cheapflights users on 7/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/123:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Wed 8/192:25 pm
BRU
- SEA
1 stop30h 30m
United Airlines
Deal found 7/14![United Airlines logo]()
$766
This Mytrip deal was found by Cheapflights users on 7/12. 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 9/13:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Wed 9/95:30 pm
CRL
- SEA
3 stops33h 25m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$809
This United Airlines deal was found by Cheapflights users on 7/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:40 am
SEA
- BRU
2 stops19h 35m
United Airlines
Mon 8/242:25 pm
BRU
- SEA
1 stop30h 30m
United Airlines
Deal found 7/14![United Airlines logo]()
$770
This Icelandair deal was found by Cheapflights users on 7/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 9/31:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/17![Icelandair logo]()
$786
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Sun 10/183:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Thu 10/229:10 am
BRU
- SEA
2 stops39h 52m
United Airlines
Deal found 7/12![United Airlines logo]()
$778
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Sun 9/137:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Sat 9/198:25 am
CRL
- SEA
2 stops34h 15m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$924
This United Airlines deal was found by Cheapflights users on 7/15. 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 10/123:00 pm
SEA
- BRU
2 stops37h 15m
United Airlines
Thu 10/159:55 am
BRU
- SEA
1 stop20h 09m
United Airlines
Deal found 7/15![United Airlines logo]()
$779
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Sun 9/137:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Fri 9/189:50 am
CRL
- SEA
2 stops32h 50m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$946
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Wed 8/55:30 pm
SEA
- CRL
1 stop15h 15m
Multiple Airlines
Fri 8/218:50 am
CRL
- SEA
1 stop18h 00m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$954
This Mytrip deal was found by Cheapflights users on 7/14. 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.
Tue 9/13:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Fri 9/189:50 am
CRL
- SEA
2 stops17h 55m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$982
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Wed 9/97:10 pm
SEA
- CRL
1 stop28h 30m
Multiple Airlines
Sat 9/266:50 pm
CRL
- SEA
2 stops33h 10m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$1,007
This Mytrip deal was found by Cheapflights users on 7/14. 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.
Mon 8/177:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Mon 8/248:50 am
CRL
- SEA
2 stops35h 55m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$1,009
This Mytrip deal was found by Cheapflights users on 7/16. 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 8/187:00 pm
SEA
- CRL
2 stops17h 15m
Multiple Airlines
Tue 8/256:15 pm
CRL
- SEA
2 stops30h 25m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$1,062
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated July 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated July 17, 2026 and is based on user searches.
This Icelandair deal was found by Cheapflights users on 7/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sat 8/291:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/17![Icelandair logo]()
$606
This Icelandair deal was found by Cheapflights users on 7/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 8/231:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/17![Icelandair logo]()
$607
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Mon 8/311:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Thu 8/271:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/17![Icelandair logo]()
$603
This KAYAK deal was found by Cheapflights users on 7/17. 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.
Mon 8/311:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/17![Icelandair logo]()
$605
This oojo deal was found by Cheapflights users on 7/17. 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 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
Mon 8/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/17![Icelandair logo]()
$574
This FlightHub deal was found by Cheapflights users on 7/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Tue 8/251:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/17![Icelandair logo]()
$583
This FlightHub deal was found by Cheapflights users on 7/17. 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 FlightHub 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
Sun 8/231:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/17![Icelandair logo]()
$585
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Wed 8/55:30 pm
SEA
- CRL
1 stop15h 15m
Multiple Airlines
Fri 8/218:50 am
CRL
- SEA
1 stop18h 00m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$954
This Gotogate deal was found by Cheapflights users on 7/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 8/241:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/14![Icelandair logo]()
$611
This Mytrip deal was found by Cheapflights users on 7/14. 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.
Mon 8/177:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Fri 8/289:50 am
CRL
- SEA
2 stops32h 50m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$978
This Gotogate deal was found by Cheapflights users on 7/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Tue 8/251:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/14![Icelandair logo]()
$563
This oojo deal was found by Cheapflights users on 7/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/14![Icelandair logo]()
$580
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 July 17, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
This Mytrip deal was found by Cheapflights users on 7/14. 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.
Sun 10/43:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/14![Icelandair logo]()
$225
This oojo deal was found by Cheapflights users on 7/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/15![Icelandair logo]()
$229
This Mytrip deal was found by Cheapflights users on 7/15. 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 10/183:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/15![Icelandair logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Fri 7/2411:25 pm
SEA
- BRU
2 stops48h 35m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 7/14. 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.
Sun 10/47:00 pm
SEA
- CRL
3 stops29h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$247
This oojo deal was found by Cheapflights users on 7/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/15![Icelandair logo]()
$248
This Icelandair deal was found by Cheapflights users on 7/14. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/14![Icelandair logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Sun 10/253:35 pm
SEA
- CRL
3 stops23h 20m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 7/14. 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.
Thu 8/277:00 pm
SEA
- CRL
3 stops27h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 7/14. 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.
Fri 8/2111:25 pm
SEA
- CRL
2 stops47h 40m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Mon 8/1711:25 pm
SEA
- CRL
3 stops47h 25m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 7/15. 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 9/287:52 am
SEA
- CRL
3 stops25h 48m
Multiple Airlines
Deal found 7/15![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 July 17, 2026.
Round-trip from | $527 (oojo) |
|---|---|
One-way from | $225 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $733 |
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 July 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
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 8/2
7:00 pm-12:55 pm
1 stop32h 55m
Brussels Bruxelles-National
Thu 8/27
1:50 pm-5:55 pm
1 stop13h 05m
$606
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 8/5
7:00 pm-12:55 pm
1 stop32h 55m
Brussels Bruxelles-National
Mon 8/24
1:50 pm-11:45 am
1 stop30h 55m
$607
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 8/2
7:00 pm-12:55 pm
1 stop32h 55m
Brussels Bruxelles-National
Mon 8/24
1:50 pm-11:45 am
1 stop30h 55m
$607
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 11/6
10:52 am-1:15 pm
2 stops17h 23m
Brussels Bruxelles-National
Wed 11/11
7:00 am-12:00 pm
1 stop14h 00m
$725
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 11/2
7:00 am-8:05 am
1 stop16h 05m
Brussels Bruxelles-National
Mon 11/9
7:00 am-12:00 pm
1 stop14h 00m
$729
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 8/18
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Tue 8/25
9:55 am-4:07 pm
2 stops39h 12m
$733
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 8/12
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Wed 8/19
2:25 pm-11:55 am
1 stop30h 30m
$766
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/17
8:40 am-1:15 pm
2 stops19h 35m
Brussels Bruxelles-National
Mon 8/24
2:25 pm-11:55 am
1 stop30h 30m
$770
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/18
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Thu 10/22
9:10 am-4:02 pm
2 stops39h 52m
$778
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/12
3:00 pm-1:15 pm
2 stops37h 15m
Brussels Bruxelles-National
Thu 10/15
9:55 am-9:04 pm
1 stop20h 09m
$779
Showing 1-10 of 35 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 $510). Flying from Seattle to Belgium in June is currently the most expensive (average of $1,284). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Seattle to Belgium?
Booking 71 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 July 17, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, 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
7.2
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from Seattle to 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 July 17, 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 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 July 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$535 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$620 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$713 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$749 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$494 | Average$675 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$502 | Average$741 | FlexibilityNo cancel fee | On-time69% |