$254+ 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 29 — Aug 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 June 29, 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 29, 2026.
This oojo deal was found by Cheapflights users on 6/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Thu 12/312:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 6/27![Icelandair logo]()
$554
This Gotogate deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 8/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 8/191:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 6/24![Icelandair logo]()
$561
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares 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 6/28![Icelandair logo]()
$564
This oojo deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 6/24![Icelandair logo]()
$567
This Mytrip deal was found by Cheapflights users on 6/27. 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.
Tue 8/187:00 pm
SEA
- CRL
2 stops17h 15m
Multiple Airlines
Thu 8/277:05 am
CRL
- SEA
2 stops19h 50m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$570
This Mytrip deal was found by Cheapflights users on 6/27. 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 8/177:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 8/271:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/27![Icelandair logo]()
$574
This oojo deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 6/24![Icelandair logo]()
$580
This Gotogate deal was found by Cheapflights users on 6/25. 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.
Wed 8/53:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Tue 8/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/25![Icelandair logo]()
$603
This Mytrip deal was found by Cheapflights users on 6/27. 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 8/1710:45 am
SEA
- CRL
3 stops24h 50m
Multiple Airlines
Thu 8/276:35 am
CRL
- SEA
3 stops36h 05m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$846
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:10 pm
SEA
- CRL
1 stop28h 30m
Multiple Airlines
Tue 8/259:00 pm
CRL
- SEA
2 stops29h 55m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$922
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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
Wed 8/199:20 am
CRL
- SEA
2 stops42h 53m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$935
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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
Thu 8/277:05 am
CRL
- SEA
2 stops19h 50m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$938
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 29, 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 29, 2026.
This oojo deal was found by Cheapflights users on 6/29. 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 8/1711:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 8/281:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/29![Icelandair logo]()
$575
This Scandinavian Airlines deal was found by Cheapflights users on 6/27. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:55 pm
SEA
- BRU
2 stops17h 25m
Scandinavian Airlines
Sun 9/1310:20 am
BRU
- SEA
1 stop12h 25m
Scandinavian Airlines
Deal found 6/27![Scandinavian Airlines logo]()
$714
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 8/1611:00 pm
SEA
- BRU
2 stops23h 15m
United Airlines
Thu 8/279:55 am
BRU
- SEA
2 stops39h 12m
United Airlines
Deal found 6/24![United Airlines logo]()
$746
This Delta deal was found by Cheapflights users on 6/25. 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 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 6/25![Delta logo]()
$747
This United deal was found by Cheapflights users on 6/28. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:00 am
SEA
- BRU
1 stop17h 00m
Multiple Airlines
Mon 8/247:40 pm
BRU
- SEA
2 stops31h 52m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$752
This Gotogate deal was found by Cheapflights users on 6/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:45 am
SEA
- BRU
2 stops18h 30m
SWISS
Mon 8/247:40 pm
BRU
- SEA
2 stops31h 52m
SWISS
Deal found 6/28![SWISS logo]()
$758
This Icelandair deal was found by Cheapflights users on 6/25. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 8/281:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/25![Icelandair logo]()
$642
This Delta deal was found by Cheapflights users on 6/28. 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.
Sun 8/95:45 pm
SEA
- BRU
1 stop11h 55m
Delta
Mon 8/243:10 pm
BRU
- SEA
1 stop29h 27m
Delta
Deal found 6/28![Delta logo]()
$759
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Wed 11/257:00 am
SEA
- BRU
2 stops21h 15m
United Airlines
Mon 11/304:55 pm
BRU
- SEA
2 stops38h 02m
United Airlines
Deal found 6/26![United Airlines logo]()
$761
This Mytrip deal was found by Cheapflights users on 6/28. 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.
Sun 8/97:00 am
SEA
- CRL
3 stops29h 15m
Multiple Airlines
Mon 8/248:50 am
CRL
- SEA
2 stops18h 05m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$939
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 9/67:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Mon 9/1410:00 pm
CRL
- SEA
2 stops29h 45m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$939
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 8/37:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Wed 8/199:20 am
CRL
- SEA
2 stops42h 53m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$950
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:00 am
SEA
- CRL
2 stops27h 35m
Multiple Airlines
Fri 8/289:50 am
CRL
- SEA
2 stops17h 55m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$958
This Mytrip deal was found by Cheapflights users on 6/28. 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.
Wed 8/52:10 pm
SEA
- CRL
2 stops18h 35m
Multiple Airlines
Mon 8/176:20 pm
CRL
- SEA
2 stops26h 35m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$967
This Mytrip deal was found by Cheapflights users on 6/26. 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 7/243:40 pm
SEA
- CRL
3 stops21h 55m
Multiple Airlines
Fri 7/319:50 am
CRL
- SEA
3 stops45h 52m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$1,008
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 9/67:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Sat 9/127:20 pm
CRL
- SEA
2 stops25h 25m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$1,013
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated June 29, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated June 29, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/266:50 pm
SEA
- BRU
1 stop19h 05m
Lufthansa
Fri 7/36:45 am
BRU
- SEA
1 stop19h 14m
Lufthansa
Deal found 6/25![Lufthansa logo]()
$1,119
This Mytrip deal was found by Cheapflights users on 6/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/12:10 pm
SEA
- CRL
2 stops21h 20m
Multiple Airlines
Mon 7/69:05 pm
CRL
- SEA
2 stops28h 54m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,294
This Turkish Airlines deal was found by Cheapflights users on 6/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:15 pm
SEA
- BRU
1 stop29h 40m
Turkish Airlines
Wed 7/2211:20 am
BRU
- SEA
1 stop39h 00m
Turkish Airlines
Deal found 6/29![Turkish Airlines logo]()
$1,052
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/193:40 pm
SEA
- BRU
3 stops33h 35m
Multiple Airlines
Wed 7/228:50 pm
BRU
- SEA
3 stops32h 50m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,087
This BusinessClass deal was found by Cheapflights users on 6/29. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/193:00 pm
SEA
- BRU
2 stops37h 15m
Austrian Airlines
Wed 7/229:30 am
BRU
- SEA
2 stops35h 08m
Austrian Airlines
Deal found 6/29![Austrian Airlines logo]()
$1,093
This Cheapflightsfares deal was found by Cheapflights users on 6/26. 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.
Fri 7/243:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 7/311:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/26![Icelandair logo]()
$825
This Mytrip deal was found by Cheapflights users on 6/26. 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 7/243:40 pm
SEA
- CRL
3 stops21h 55m
Multiple Airlines
Fri 7/319:50 am
CRL
- SEA
3 stops45h 52m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$1,008
This Delta deal was found by Cheapflights users on 6/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/247:20 am
SEA
- BRU
1 stop15h 20m
Delta
Fri 7/3110:25 am
BRU
- SEA
2 stops19h 09m
Delta
Deal found 6/26![Delta logo]()
$1,054
This oojo deal was found by Cheapflights users on 6/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/243:00 pm
SEA
- BRU
2 stops16h 15m
Lufthansa
Fri 7/3110:30 am
BRU
- SEA
2 stops15h 29m
Lufthansa
Deal found 6/26![Lufthansa logo]()
$1,110
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Sat 7/257:30 am
SEA
- BRU
2 stops20h 45m
United Airlines
Sat 8/112:00 pm
BRU
- SEA
2 stops31h 00m
United Airlines
Deal found 6/27![United Airlines logo]()
$1,022
This Delta deal was found by Cheapflights users on 6/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:40 pm
SEA
- BRU
1 stop12h 00m
Delta
Sat 8/13:10 pm
BRU
- SEA
1 stop29h 27m
Delta
Deal found 6/27![Delta logo]()
$1,023
This Mytrip deal was found by Cheapflights users on 6/27. 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.
Sat 7/253:55 pm
SEA
- BRU
3 stops32h 35m
Scandinavian Airlines
Sat 8/15:05 pm
BRU
- SEA
2 stops29h 40m
Scandinavian Airlines
Deal found 6/27![Scandinavian Airlines logo]()
$1,106
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 29, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated June 29, 2026.
This oojo deal was found by Cheapflights users on 6/25. 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 8/411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/25![Icelandair logo]()
$254
This Icelandair deal was found by Cheapflights users on 6/25. 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 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 6/25![Icelandair logo]()
$273
This Icelandair deal was found by Cheapflights users on 6/25. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 6/25![Icelandair logo]()
$305
This oojo deal was found by Cheapflights users on 6/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 6/27![Icelandair logo]()
$315
This oojo deal was found by Cheapflights users on 6/29. 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 7/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 6/29![Icelandair logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 6/27. 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.
Tue 9/297:52 am
SEA
- CRL
3 stops30h 03m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 6/27. 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.
Tue 9/297:52 am
SEA
- BRU
3 stops27h 08m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$343
This oojo deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 10/138:20 pm
SEA
- BRU
1 stop15h 05m
British Airways
Deal found 6/24![British Airways logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 9/147:00 pm
SEA
- CRL
2 stops42h 55m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 8/137:10 pm
SEA
- CRL
2 stops31h 15m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 8/77:10 pm
SEA
- CRL
2 stops35h 10m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 8/87:10 pm
SEA
- CRL
2 stops29h 05m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$391
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 29, 2026.
Round-trip from | $554 (oojo) |
|---|---|
One-way from | $254 (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 29, 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 8/17
11:25 pm-12:55 pm
1 stop28h 30m
Brussels Bruxelles-National
Fri 8/28
1:50 pm-5:55 pm
1 stop13h 05m
$575
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/24
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Fri 8/28
1:50 pm-5:55 pm
1 stop13h 05m
$642
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 9/5
3:55 pm-6:20 pm
2 stops17h 25m
Brussels Bruxelles-National
Sun 9/13
10:20 am-1:45 pm
1 stop12h 25m
$714
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 8/16
11:00 pm-7:15 am
2 stops23h 15m
Brussels Bruxelles-National
Thu 8/27
9:55 am-4:07 pm
2 stops39h 12m
$746
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
$747
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 8/9
7:00 am-9:00 am
1 stop17h 00m
Brussels Bruxelles-National
Mon 8/24
7:40 pm-6:32 pm
2 stops31h 52m
$752
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 8/9
10:45 am-2:15 pm
2 stops18h 30m
Brussels Bruxelles-National
Mon 8/24
7:40 pm-6:32 pm
2 stops31h 52m
$758
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 8/9
5:45 pm-2:40 pm
1 stop11h 55m
Brussels Bruxelles-National
Mon 8/24
3:10 pm-11:37 am
1 stop29h 27m
$759
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 11/25
7:00 am-1:15 pm
2 stops21h 15m
Brussels Bruxelles-National
Mon 11/30
4:55 pm-9:57 pm
2 stops38h 02m
$761
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Sun 8/9
7:00 am-9:15 pm
3 stops29h 15m
Charleroi Brussels
Mon 8/24
8:50 am-5:55 pm
2 stops18h 05m
$939
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 $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 74 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 29, 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
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Boarding
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
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
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 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to Belgium flights
Consider these flights traveling from Seattle to Belgium.
Top 6 airlines flying from Seattle to Belgium
Discover the top 6 airlines that operate flights from Seattle to Belgium. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$524 | 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$716 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$494 | Average$672 | FlexibilityNo cancel fee | On-time76% |