$248+ Cheap flights from Seattle (SEA) to Belgium
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Jul 18 — Jul 251
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 June 18, 2026.
Explore the most affordable flight options available from Seattle to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
This oojo deal was found by Cheapflights users on 6/14. 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 10/43:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Mon 10/191:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/14![Icelandair logo]()
$519
This oojo deal was found by Cheapflights users on 6/17. 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.
Sun 10/183:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/2912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 6/17![Icelandair logo]()
$521
This oojo deal was found by Cheapflights users on 6/13. 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 6/13![Icelandair logo]()
$522
This Gotogate deal was found by Cheapflights users on 6/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 8/191:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 6/17![Icelandair logo]()
$524
This oojo deal was found by Cheapflights users on 6/16. 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.
Mon 9/217:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 10/161:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/16![Icelandair logo]()
$527
This oojo deal was found by Cheapflights users on 6/14. 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.
Wed 9/233:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Mon 10/51:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/14![Icelandair logo]()
$528
This Mytrip deal was found by Cheapflights users on 6/15. 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 8/307:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Tue 9/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/15![Icelandair logo]()
$534
This oojo deal was found by Cheapflights users on 6/17. 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 9/17:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/17![Icelandair logo]()
$535
This Icelandair deal was found by Cheapflights users on 6/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/15![Icelandair logo]()
$549
This Mytrip deal was found by Cheapflights users on 6/17. 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.
Sun 8/233:40 pm
SEA
- CRL
3 stops22h 05m
Multiple Airlines
Thu 9/36:35 am
CRL
- SEA
3 stops47h 25m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$862
This Mytrip deal was found by Cheapflights users on 6/16. 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 8/313:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Fri 9/119:50 am
CRL
- SEA
2 stops32h 50m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$889
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Wed 8/195:30 pm
SEA
- CRL
1 stop15h 15m
Multiple Airlines
Sun 9/69:05 am
CRL
- SEA
2 stops39h 55m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$947
Best flights from Seattle to BelgiumDiscover carefully curated flight deals from Seattle to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
Discover carefully curated flight deals from Seattle to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
This Icelandair deal was found by Cheapflights users on 6/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/15![Icelandair logo]()
$549
This United Airlines deal was found by Cheapflights users on 6/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:50 am
SEA
- BRU
1 stop16h 15m
United Airlines
Tue 11/1710:00 am
BRU
- SEA
2 stops43h 10m
United Airlines
Deal found 6/17![United Airlines logo]()
$707
This Scandinavian Airlines deal was found by Cheapflights users on 6/13. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:55 pm
SEA
- BRU
1 stop32h 45m
Scandinavian Airlines
Tue 10/610:20 am
BRU
- SEA
1 stop12h 25m
Scandinavian Airlines
Deal found 6/13![Scandinavian Airlines logo]()
$726
This United deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” 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 8/31:55 pm
SEA
- BRU
2 stops21h 05m
Multiple Airlines
Wed 8/196:10 pm
BRU
- SEA
2 stops33h 22m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$748
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” 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.
Mon 8/36:00 am
SEA
- BRU
1 stop16h 40m
Delta
Wed 8/193:10 pm
BRU
- SEA
1 stop29h 27m
Delta
Deal found 6/18![Delta logo]()
$750
This United Airlines deal was found by Cheapflights users on 6/16. 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 8/317:00 am
SEA
- BRU
1 stop17h 00m
United Airlines
Fri 9/119:10 am
BRU
- SEA
2 stops45h 21m
United Airlines
Deal found 6/16![United Airlines logo]()
$767
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Sun 8/3011:04 pm
SEA
- BRU
1 stop23h 21m
United Airlines
Tue 9/159:10 am
BRU
- SEA
2 stops35h 22m
United Airlines
Deal found 6/15![United Airlines logo]()
$767
This Mytrip deal was found by Cheapflights users on 6/17. 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.
Sun 8/233:40 pm
SEA
- CRL
3 stops22h 05m
Multiple Airlines
Thu 9/36:35 am
CRL
- SEA
3 stops47h 25m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$862
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Sun 10/113:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Thu 10/159:10 am
BRU
- SEA
2 stops39h 52m
United Airlines
Deal found 6/14![United Airlines logo]()
$778
This Mytrip deal was found by Cheapflights users on 6/14. 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 9/37:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Sun 9/139:05 am
CRL
- SEA
2 stops17h 50m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$963
This Mytrip deal was found by Cheapflights users on 6/14. 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.
Sat 11/72:35 pm
SEA
- CRL
3 stops23h 20m
Multiple Airlines
Tue 11/177:25 am
CRL
- SEA
2 stops18h 35m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,024
This Mytrip deal was found by Cheapflights users on 6/16. 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.
Wed 8/196:50 pm
SEA
- CRL
2 stops16h 10m
Multiple Airlines
Mon 9/78:50 am
CRL
- SEA
2 stops20h 50m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,049
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 8/315:30 pm
SEA
- CRL
1 stop15h 20m
Multiple Airlines
Fri 9/119:50 am
CRL
- SEA
2 stops17h 55m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,069
This Mytrip deal was found by Cheapflights users on 6/17. 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.
Tue 11/102:35 pm
SEA
- CRL
3 stops23h 10m
Multiple Airlines
Tue 11/177:25 am
CRL
- SEA
2 stops18h 35m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$1,104
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 10/117:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Thu 10/159:55 pm
CRL
- SEA
2 stops28h 25m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$1,118
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated June 18, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 6/14. 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.
Thu 6/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 6/261:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/14![Icelandair logo]()
$900
This Booking.com deal was found by Cheapflights users on 6/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:55 pm
SEA
- BRU
1 stop16h 45m
Aer Lingus
Tue 7/1410:20 am
BRU
- SEA
1 stop15h 50m
Aer Lingus
Deal found 6/16![Aer Lingus logo]()
$820
This Gotogate deal was found by Cheapflights users on 6/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:45 am
SEA
- BRU
2 stops16h 25m
Multiple Airlines
Mon 7/209:20 pm
BRU
- SEA
2 stops24h 00m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$907
This Mytrip deal was found by Cheapflights users on 6/15. 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 7/132:10 pm
SEA
- CRL
2 stops19h 30m
Multiple Airlines
Mon 7/209:30 pm
CRL
- SEA
2 stops23h 50m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,269
This United Airlines deal was found by Cheapflights users on 6/16. 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 7/213:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Tue 7/289:35 am
BRU
- SEA
1 stop16h 24m
United Airlines
Deal found 6/16![United Airlines logo]()
$883
This FlightHub deal was found by Cheapflights users on 6/16. 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.
Tue 7/216:50 pm
SEA
- BRU
1 stop19h 20m
Lufthansa
Mon 7/279:20 pm
BRU
- SEA
1 stop28h 39m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$904
This FlightHub deal was found by Cheapflights users on 6/16. 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 7/226:50 pm
SEA
- BRU
1 stop16h 05m
Lufthansa
Tue 7/289:35 am
BRU
- SEA
1 stop16h 24m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$893
This KAYAK deal was found by Cheapflights users on 6/16. 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.
Wed 7/223:00 pm
SEA
- BRU
2 stops17h 15m
Lufthansa
Mon 7/277:30 pm
BRU
- SEA
1 stop30h 29m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$909
This Kiwi.com deal was found by Cheapflights users on 6/16. 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.
Wed 7/225:30 pm
SEA
- CRL
1 stop15h 15m
Multiple Airlines
Tue 7/284:50 pm
CRL
- SEA
2 stops35h 35m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,195
This Kiwi.com deal was found by Cheapflights users on 6/16. 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.
Wed 7/225:30 pm
SEA
- CRL
1 stop15h 15m
Multiple Airlines
Mon 7/279:40 pm
CRL
- SEA
2 stops30h 05m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,224
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/307:00 am
SEA
- BRU
2 stops21h 15m
United Airlines
Thu 8/66:45 am
BRU
- SEA
1 stop19h 14m
United Airlines
Deal found 6/15![United Airlines logo]()
$863
This Mytrip deal was found by Cheapflights users on 6/16. 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.
Fri 7/3110:30 am
SEA
- CRL
2 stops27h 15m
Multiple Airlines
Sun 8/168:35 am
CRL
- SEA
2 stops17h 35m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,229
One-way flights from Seattle to BelgiumSearch for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This oojo deal was found by Cheapflights users on 6/17. 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
Deal found 6/17![Icelandair logo]()
$248
This FlightHub deal was found by Cheapflights users on 6/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/15![Icelandair logo]()
$258
This Icelandair deal was found by Cheapflights users on 6/17. 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 8/2611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/17![Icelandair logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Tue 8/187:00 pm
SEA
- CRL
2 stops32h 05m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Thu 8/207:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Wed 8/1911:25 pm
SEA
- CRL
2 stops37h 05m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$276
This Mytrip deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” 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 7/411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/18![Icelandair logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 8/167:00 pm
SEA
- CRL
3 stops29h 30m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 8/173:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Tue 8/1111:25 pm
SEA
- CRL
3 stops27h 05m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Wed 8/193:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 6/15![Icelandair logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Thu 8/2011:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/15![Icelandair logo]()
$305
Find flight deals from Seattle to Belgium
Keep the following information in mind while searching for Seattle to Belgium flight deals. Data was last updated June 18, 2026.
Round-trip from | $519 (oojo) |
|---|---|
One-way from | $248 (oojo) |
Popular in | June |
Cheapest in | January |
Average price | $1,284 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Belgium that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
Use the filters below to find and compare flights from Seattle to Belgium that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/11
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Thu 10/15
1:50 pm-8:40 pm
1 stop15h 50m
$549
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 11/10
6:50 am-8:05 am
1 stop16h 15m
Brussels Bruxelles-National
Tue 11/17
10:00 am-8:10 pm
2 stops43h 10m
$707
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 10/2
3:55 pm-9:40 am
1 stop32h 45m
Brussels Bruxelles-National
Tue 10/6
10:20 am-1:45 pm
1 stop12h 25m
$726
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/3
1:55 pm-8:00 pm
2 stops21h 05m
Brussels Bruxelles-National
Wed 8/19
6:10 pm-6:32 pm
2 stops33h 22m
$748
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/3
6:00 am-7:40 am
1 stop16h 40m
Brussels Bruxelles-National
Wed 8/19
3:10 pm-11:37 am
1 stop29h 27m
$750
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/31
7:00 am-9:00 am
1 stop17h 00m
Brussels Bruxelles-National
Fri 9/11
9:10 am-9:31 pm
2 stops45h 21m
$767
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 8/30
11:04 pm-7:25 am
1 stop23h 21m
Brussels Bruxelles-National
Tue 9/15
9:10 am-11:32 am
2 stops35h 22m
$767
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/11
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Thu 10/15
9:10 am-4:02 pm
2 stops39h 52m
$778
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Sun 8/23
3:40 pm-10:45 pm
3 stops22h 05m
Charleroi Brussels
Thu 9/3
6:35 am-9:00 pm
3 stops47h 25m
$862
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 9/3
7:00 pm-9:30 pm
2 stops17h 30m
Charleroi Brussels
Sun 9/13
9:05 am-5:55 pm
2 stops17h 50m
$963
Showing 1-10 of 31 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 $375). Flying from Seattle to Belgium in June is currently the most expensive (average of $693). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Seattle to Belgium?
Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Belgium. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Belgium
Get insights into the airlines that provide service to Belgium. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belgium. Reviews last updated June 18, 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.
Comfort
7.7
Crew
8.4
Entertainment
7.2
Overall
7.8
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Entertainment
7.2
Overall
7.8
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Entertainment
7.2
Overall
7.8
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Entertainment
7.2
Overall
7.8
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Entertainment
7.2
Overall
7.8
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Entertainment
7.2
Overall
7.8
Food
7.3
Boarding
7.8
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
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Seattle and Belgium flights
Browse other Seattle and Belgium flight options. Last updated on June 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Seattle to Belgium
Discover the top 6 airlines that operate flights from Seattle to Belgium. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$519 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$620 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$733 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$713 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$709 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$494 | Average$663 | FlexibilityNo cancel fee | On-time76% |