$184+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Jul 12 — Jul 191
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 12, 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 12, 2026.
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/9![Icelandair logo]()
$513
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/9![Icelandair logo]()
$514
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/9![Icelandair logo]()
$519
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/10![Icelandair logo]()
$522
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 stop13h 05m
Icelandair
Deal found 6/9![Icelandair logo]()
$526
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo 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
Wed 8/191:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 6/10![Icelandair logo]()
$531
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Mon 10/1910:00 pm
CRL
- SEA
2 stops29h 45m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$904
This Mytrip deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:45 am
SEA
- CRL
3 stops30h 30m
Multiple Airlines
Sun 8/169:05 am
CRL
- SEA
3 stops22h 37m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$906
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:10 pm
SEA
- CRL
1 stop17h 05m
Multiple Airlines
Sun 8/309:05 am
CRL
- SEA
2 stops39h 55m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$932
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:40 pm
SEA
- CRL
2 stops20h 50m
Multiple Airlines
Sun 9/139:05 am
CRL
- SEA
2 stops17h 50m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$962
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/263:40 pm
SEA
- CRL
3 stops20h 35m
Multiple Airlines
Tue 8/119:05 am
CRL
- SEA
2 stops17h 05m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$979
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Tue 8/186:40 am
CRL
- SEA
2 stops21h 05m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$992
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 12, 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 12, 2026.
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Fri 10/239:10 am
BRU
- SEA
2 stops39h 41m
United Airlines
Deal found 6/8![United Airlines logo]()
$778
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:05 am
SEA
- BRU
2 stops23h 35m
Delta
Tue 8/189:45 am
BRU
- SEA
1 stop19h 38m
Delta
Deal found 6/10![Delta logo]()
$864
This Scandinavian Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:20 am
SEA
- BRU
2 stops22h 15m
Scandinavian Airlines
Fri 10/235:45 am
BRU
- SEA
2 stops24h 03m
Scandinavian Airlines
Deal found 6/6![Scandinavian Airlines logo]()
$873
This United deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:10 pm
SEA
- BRU
2 stops35h 50m
Multiple Airlines
Sun 9/139:10 am
BRU
- SEA
2 stops38h 12m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$895
This British Airways deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:26 am
SEA
- BRU
2 stops21h 59m
British Airways
Tue 8/1810:55 am
BRU
- SEA
2 stops20h 31m
British Airways
Deal found 6/9![British Airways logo]()
$978
This Icelandair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/213:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 6/261:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/10![Icelandair logo]()
$1,188
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:00 am
SEA
- BRU
1 stop16h 40m
Delta
Thu 8/138:05 am
BRU
- SEA
1 stop12h 32m
Delta
Deal found 6/11![Delta logo]()
$866
This Mytrip deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:45 am
SEA
- CRL
3 stops30h 30m
Multiple Airlines
Sun 8/169:05 am
CRL
- SEA
3 stops22h 37m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$906
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/319:45 pm
SEA
- BRU
1 stop24h 55m
Delta
Wed 8/126:20 am
BRU
- SEA
2 stops19h 40m
Delta
Deal found 6/11![Delta logo]()
$877
This United deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:13 pm
SEA
- BRU
1 stop30h 47m
Multiple Airlines
Sun 8/169:30 am
BRU
- SEA
2 stops33h 37m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$913
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:40 pm
SEA
- CRL
2 stops20h 50m
Multiple Airlines
Sun 9/139:05 am
CRL
- SEA
2 stops17h 50m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$962
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/263:40 pm
SEA
- CRL
3 stops20h 35m
Multiple Airlines
Tue 8/119:05 am
CRL
- SEA
2 stops17h 05m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$979
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Tue 8/186:40 am
CRL
- SEA
2 stops21h 05m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$992
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:40 pm
SEA
- CRL
2 stops22h 15m
Multiple Airlines
Mon 10/199:40 am
CRL
- SEA
2 stops17h 15m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,092
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/310:45 am
SEA
- CRL
3 stops24h 50m
Multiple Airlines
Mon 8/109:40 am
CRL
- SEA
2 stops16h 30m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,107
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1411:00 am
SEA
- CRL
3 stops26h 35m
Multiple Airlines
Fri 8/289:50 am
CRL
- SEA
2 stops17h 55m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,113
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:10 pm
SEA
- CRL
1 stop17h 05m
Multiple Airlines
Fri 8/78:45 am
CRL
- SEA
2 stops17h 25m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,120
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated June 12, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated June 12, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/7![Icelandair logo]()
$847
This Booking.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/10![Aer Lingus logo]()
$820
This Gotogate deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:45 am
SEA
- BRU
2 stops16h 25m
Air Canada
Wed 7/159:30 am
BRU
- SEA
2 stops33h 37m
Air Canada
Deal found 6/8![Air Canada logo]()
$885
This Booking.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/126:55 pm
SEA
- BRU
1 stop16h 45m
Aer Lingus
Sat 7/2510:20 am
BRU
- SEA
1 stop15h 50m
Aer Lingus
Deal found 6/10![Aer Lingus logo]()
$873
This Gotogate deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:00 am
SEA
- BRU
1 stop14h 50m
Air Canada
Wed 7/299:30 am
BRU
- SEA
2 stops22h 12m
Air Canada
Deal found 6/7![Air Canada logo]()
$842
This Gotogate deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:20 pm
SEA
- BRU
2 stops26h 50m
Multiple Airlines
Tue 8/1112:45 pm
BRU
- SEA
1 stop13h 14m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$857
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2611:59 pm
SEA
- BRU
1 stop22h 41m
Delta
Tue 8/118:05 am
BRU
- SEA
1 stop12h 32m
Delta
Deal found 6/10![Delta logo]()
$860
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/263:40 pm
SEA
- CRL
3 stops20h 35m
Multiple Airlines
Tue 8/119:05 am
CRL
- SEA
2 stops17h 05m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$979
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:20 pm
SEA
- BRU
2 stops50h 50m
Air Canada
Thu 8/139:30 am
BRU
- SEA
2 stops33h 37m
Air Canada
Deal found 6/11![Air Canada logo]()
$854
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/319:45 pm
SEA
- BRU
1 stop24h 55m
Delta
Thu 8/1310:25 am
BRU
- SEA
1 stop34h 12m
Delta
Deal found 6/11![Delta logo]()
$866
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/319:45 pm
SEA
- BRU
1 stop24h 55m
Delta
Wed 8/126:20 am
BRU
- SEA
2 stops19h 40m
Delta
Deal found 6/11![Delta logo]()
$877
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:40 pm
SEA
- BRU
1 stop28h 55m
Delta
Fri 8/710:25 am
BRU
- SEA
2 stops22h 29m
Delta
Deal found 6/11![Delta logo]()
$881
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 12, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:35 pm
SEA
- CRL
3 stops42h 55m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:35 pm
SEA
- BRU
2 stops16h 55m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:35 pm
SEA
- BRU
2 stops31h 05m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:35 pm
SEA
- CRL
3 stops29h 40m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$214
This Mytrip deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 6/8![Icelandair logo]()
$215
This Mytrip deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/8![Icelandair logo]()
$217
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/9![Icelandair logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:35 pm
SEA
- BRU
3 stops30h 40m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$229
This Mytrip deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/8![Icelandair logo]()
$231
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 6/9![Icelandair logo]()
$236
This oojo deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/8![Icelandair logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:35 pm
SEA
- CRL
3 stops28h 20m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$264
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 12, 2026.
Round-trip from | $513 (oojo) |
|---|---|
One-way from | $184 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,138 |
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 12, 2026.
Use the filters below to find and compare flights from Seattle to Belgium that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/19
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Fri 10/23
9:10 am-3:51 pm
2 stops39h 41m
$778
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/3
6:05 am-2:40 pm
2 stops23h 35m
Brussels Bruxelles-National
Tue 8/18
9:45 am-8:23 pm
1 stop19h 38m
$864
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 8/6
6:00 am-7:40 am
1 stop16h 40m
Brussels Bruxelles-National
Thu 8/13
8:05 am-11:37 am
1 stop12h 32m
$866
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/19
7:20 am-2:35 pm
2 stops22h 15m
Brussels Bruxelles-National
Fri 10/23
5:45 am-8:48 pm
2 stops24h 03m
$873
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 7/31
9:45 pm-7:40 am
1 stop24h 55m
Brussels Bruxelles-National
Wed 8/12
6:20 am-5:00 pm
2 stops19h 40m
$877
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 9/3
12:10 pm-9:00 am
2 stops35h 50m
Brussels Bruxelles-National
Sun 9/13
9:10 am-2:22 pm
2 stops38h 12m
$895
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 8/11
5:45 am-9:15 pm
3 stops30h 30m
Charleroi Brussels
Sun 8/16
9:05 am-10:42 pm
3 stops22h 37m
$906
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 8/11
5:13 pm-9:00 am
1 stop30h 47m
Brussels Bruxelles-National
Sun 8/16
9:30 am-10:07 am
2 stops33h 37m
$913
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 9/3
3:40 pm-9:30 pm
2 stops20h 50m
Charleroi Brussels
Sun 9/13
9:05 am-5:55 pm
2 stops17h 50m
$962
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/3
7:26 am-2:25 pm
2 stops21h 59m
Brussels Bruxelles-National
Tue 8/18
10:55 am-10:26 pm
2 stops20h 31m
$978
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-CRL
SEA-BRU
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-CRL
SEA-BRU
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 12, 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.
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Belgium. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Belgium
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Belgium by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Belgium by cabin class
Find flights from Seattle to Belgium, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Belgium flights
Browse other Seattle and Belgium flight options. Last updated on June 12, 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 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$496 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$621 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$741 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$713 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$642 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$494 | Average$663 | FlexibilityNo cancel fee | On-time76% |