$238+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Aug 29 — Sep 51
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 July 30, 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 30, 2026.
This Expedia deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:18 am
SEA
- BRU
2 stops16h 17m
Multiple Airlines
Fri 11/1310:15 am
BRU
- SEA
2 stops18h 29m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$524
This Cheapflightsfares deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/221:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/29![Icelandair logo]()
$559
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 7/29![Icelandair logo]()
$560
This Cheapflightsfares deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares 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
Sat 10/241:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/26![Icelandair logo]()
$564
This Mytrip deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/26![Icelandair logo]()
$569
This Gotogate deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/2911:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/111:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/25![Icelandair logo]()
$579
This oojo deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/511:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/28![Icelandair logo]()
$583
This FlightHub deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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
Mon 8/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$584
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/23:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/25![Icelandair logo]()
$585
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 7/25![Icelandair logo]()
$586
This Mytrip deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/247:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Mon 8/318:50 am
CRL
- SEA
2 stops20h 50m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$612
This Mytrip deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 10/213:40 pm
SEA
- CRL
3 stops21h 35m
Multiple Airlines
Wed 10/286:20 am
CRL
- SEA
3 stops40h 00m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$833
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 30, 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 30, 2026.
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 11/310:50 am
SEA
- BRU
2 stops17h 25m
United Airlines
Tue 11/1010:00 am
BRU
- SEA
2 stops35h 19m
United Airlines
Deal found 7/26![United Airlines logo]()
$708
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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.
Tue 11/36:00 am
SEA
- BRU
1 stop20h 00m
Delta
Tue 11/106:10 am
BRU
- SEA
1 stop14h 37m
Delta
Deal found 7/28![Delta logo]()
$729
This United deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/15:13 pm
SEA
- BRU
1 stop30h 47m
Multiple Airlines
Tue 9/86:20 am
BRU
- SEA
1 stop14h 35m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$800
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 11/175:05 am
SEA
- BRU
2 stops18h 50m
United Airlines
Wed 11/184:55 pm
BRU
- SEA
2 stops36h 52m
United Airlines
Deal found 7/26![United Airlines logo]()
$763
This Mytrip deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 10/213:40 pm
SEA
- CRL
3 stops21h 35m
Multiple Airlines
Wed 10/286:20 am
CRL
- SEA
3 stops40h 00m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$833
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/243:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Mon 8/312:25 pm
BRU
- SEA
1 stop30h 30m
United Airlines
Deal found 7/27![United Airlines logo]()
$771
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 7/25![United Airlines logo]()
$779
This Mytrip deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 10/132:10 pm
SEA
- CRL
2 stops23h 45m
Multiple Airlines
Wed 10/216:50 am
CRL
- SEA
2 stops19h 09m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$917
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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.
Sat 10/173:00 pm
SEA
- BRU
2 stops37h 15m
United Airlines
Tue 10/209:55 am
BRU
- SEA
2 stops34h 32m
United Airlines
Deal found 7/29![United Airlines logo]()
$815
This Mytrip deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 10/67:00 pm
SEA
- CRL
3 stops18h 55m
Multiple Airlines
Wed 10/149:20 am
CRL
- SEA
2 stops20h 44m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$954
This Mytrip deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 10/163:40 pm
SEA
- CRL
2 stops14h 50m
Multiple Airlines
Sun 10/257:45 am
CRL
- SEA
3 stops38h 35m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$957
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/215:50 am
SEA
- CRL
3 stops27h 00m
Multiple Airlines
Sun 10/49:05 am
CRL
- SEA
2 stops20h 35m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$974
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/267:10 pm
SEA
- CRL
1 stop28h 30m
Multiple Airlines
Wed 9/24:10 pm
CRL
- SEA
2 stops32h 50m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$1,008
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/213:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Sat 10/1710:30 am
CRL
- SEA
2 stops19h 10m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$1,029
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated July 30, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated July 30, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/26![Icelandair logo]()
$569
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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
- BRU
1 stop32h 55m
Icelandair
Fri 9/41:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/27![Icelandair logo]()
$607
This Icelandair deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 9/31:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/27![Icelandair logo]()
$610
This FlightHub deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Sun 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sat 9/51:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/27![Icelandair logo]()
$637
This Icelandair deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/27![Icelandair logo]()
$662
This Icelandair deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Mon 8/177:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 9/41:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/27![Icelandair logo]()
$648
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/177:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 8/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$664
This FlightHub deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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
Mon 8/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$584
This Icelandair deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Tue 8/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Sat 9/51:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/27![Icelandair logo]()
$660
This Mytrip deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/247:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Mon 8/318:50 am
CRL
- SEA
2 stops20h 50m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$612
This Trip.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/27![Icelandair logo]()
$641
This Gotogate deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/2911:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/111:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/25![Icelandair logo]()
$579
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 30, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated July 30, 2026.
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 7/29![Icelandair logo]()
$238
This oojo deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/28![Icelandair logo]()
$250
This FlightHub deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/317:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/27![Icelandair logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/211:25 pm
SEA
- BRU
2 stops48h 25m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/2911:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 7/27![Icelandair logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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
- BRU
1 stop28h 30m
Icelandair
Deal found 7/27![Icelandair logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 10/197:00 pm
SEA
- BRU
3 stops29h 55m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 10/157:00 pm
SEA
- CRL
3 stops27h 30m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/3111:25 pm
SEA
- CRL
3 stops24h 20m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/237:00 pm
SEA
- CRL
3 stops29h 30m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/2811:25 pm
SEA
- CRL
3 stops24h 20m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$298
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/23:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/29![Icelandair logo]()
$308
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 30, 2026.
Round-trip from | $520 (KAYAK) |
|---|---|
One-way from | $238 (oojo) |
Popular in | June |
Cheapest in | January |
Average price | $792 |
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 30, 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
Tue 11/3
10:50 am-1:15 pm
2 stops17h 25m
Brussels Bruxelles-National
Tue 11/10
10:00 am-12:19 pm
2 stops35h 19m
$708
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 11/3
6:00 am-11:00 am
1 stop20h 00m
Brussels Bruxelles-National
Tue 11/10
6:10 am-11:47 am
1 stop14h 37m
$729
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 11/17
5:05 am-8:55 am
2 stops18h 50m
Brussels Bruxelles-National
Wed 11/18
4:55 pm-8:47 pm
2 stops36h 52m
$763
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/24
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Mon 8/31
2:25 pm-11:55 am
1 stop30h 30m
$771
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
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 9/1
5:13 pm-9:00 am
1 stop30h 47m
Brussels Bruxelles-National
Tue 9/8
6:20 am-11:55 am
1 stop14h 35m
$800
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 10/17
3:00 pm-1:15 pm
2 stops37h 15m
Brussels Bruxelles-National
Tue 10/20
9:55 am-11:27 am
2 stops34h 32m
$815
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Wed 10/21
3:40 pm-10:15 pm
3 stops21h 35m
Charleroi Brussels
Wed 10/28
6:20 am-2:20 pm
3 stops40h 00m
$833
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 10/13
2:10 pm-10:55 pm
2 stops23h 45m
Charleroi Brussels
Wed 10/21
6:50 am-4:59 pm
2 stops19h 09m
$917
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 10/6
7:00 pm-10:55 pm
3 stops18h 55m
Charleroi Brussels
Wed 10/14
9:20 am-9:04 pm
2 stops20h 44m
$954
Showing 1-10 of 29 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 30, 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.
Crew
8.4
Comfort
7.7
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Comfort
7.7
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Comfort
7.7
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Comfort
7.7
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Comfort
7.7
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Comfort
7.7
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
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 30, 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 July 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$382 | Average$556 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$621 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$640 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$494 | Average$680 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$502 | Average$773 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$509 | Average$759 | FlexibilityNo cancel fee | On-timeN/A |