$256+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
May 5 — May 121
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 April 5, 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 April 5, 2026.
This Gotogate deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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.
Fri 4/247:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/2![Icelandair logo]()
$580
This Gotogate deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 11/182:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Tue 12/112:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 4/3![Icelandair logo]()
$603
This oojo deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/233:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sun 4/261:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/31![Icelandair logo]()
$605
This Gotogate deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/117:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 5/201:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/2![Icelandair logo]()
$618
This oojo deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 4/223:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/211:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/1![Icelandair logo]()
$623
This oojo deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/217:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Tue 5/261:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/31![Icelandair logo]()
$625
This Gotogate deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 10/173:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/221:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/3![Icelandair logo]()
$630
This Justfly.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 4/1![Icelandair logo]()
$631
This FlightHub deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Fri 5/87:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/3![Turkish Airlines logo]()
$641
This Mytrip deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 9/243:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/221:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/2![Icelandair logo]()
$645
This Mytrip deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 6/13:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Wed 6/109:20 am
CRL
- SEA
3 stops33h 48m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$761
This Mytrip deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 6/27:00 pm
SEA
- CRL
2 stops17h 15m
Multiple Airlines
Thu 6/117:45 am
CRL
- SEA
3 stops43h 48m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$847
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 April 5, 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 April 5, 2026.
This Mytrip deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/253:40 pm
SEA
- BRU
2 stops16h 00m
Multiple Airlines
Sun 5/39:50 am
BRU
- SEA
3 stops21h 50m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$740
This oojo deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 8/223:55 pm
SEA
- BRU
1 stop32h 45m
Scandinavian Airlines
Mon 8/319:10 pm
BRU
- SEA
2 stops25h 35m
Scandinavian Airlines
Deal found 4/5![Scandinavian Airlines logo]()
$767
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 9/1312:29 pm
SEA
- BRU
2 stops22h 31m
United Airlines
Sun 9/277:00 am
BRU
- SEA
2 stops16h 22m
United Airlines
Deal found 4/1![United Airlines logo]()
$836
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/151:21 pm
SEA
- BRU
2 stops34h 34m
United Airlines
Fri 5/2212:00 pm
BRU
- SEA
2 stops20h 10m
United Airlines
Deal found 3/31![United Airlines logo]()
$843
This Mytrip deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 6/27:00 pm
SEA
- CRL
2 stops17h 15m
Multiple Airlines
Thu 6/117:45 am
CRL
- SEA
3 stops43h 48m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$847
This United Airlines deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 4/213:45 pm
SEA
- BRU
2 stops19h 15m
United Airlines
Thu 5/218:30 am
BRU
- SEA
2 stops22h 29m
United Airlines
Deal found 4/3![United Airlines logo]()
$857
This United Airlines deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 4/1811:59 pm
SEA
- BRU
2 stops22h 16m
United Airlines
Fri 5/2210:15 am
BRU
- SEA
1 stop17h 51m
United Airlines
Deal found 4/3![United Airlines logo]()
$862
This Mytrip deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/218:00 am
SEA
- CRL
2 stops27h 35m
Multiple Airlines
Wed 5/279:20 am
CRL
- SEA
3 stops33h 45m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$956
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:40 pm
SEA
- BRU
2 stops32h 15m
United Airlines
Thu 4/2311:10 am
BRU
- SEA
2 stops20h 32m
United Airlines
Deal found 3/31![United Airlines logo]()
$873
This Mytrip deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/1110:30 am
SEA
- CRL
2 stops22h 20m
Multiple Airlines
Wed 5/209:20 am
CRL
- SEA
3 stops33h 45m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$1,016
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:40 pm
SEA
- BRU
2 stops32h 15m
United Airlines
Mon 4/2010:30 am
BRU
- SEA
1 stop34h 50m
United Airlines
Deal found 3/31![United Airlines logo]()
$886
This Mytrip deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 9/243:40 pm
SEA
- CRL
3 stops20h 50m
Multiple Airlines
Wed 10/219:20 am
CRL
- SEA
2 stops20h 44m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$1,060
This United Airlines deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 8/811:52 pm
SEA
- BRU
1 stop24h 08m
United Airlines
Wed 8/1912:45 pm
BRU
- SEA
1 stop13h 14m
United Airlines
Deal found 4/4![United Airlines logo]()
$889
This Mytrip deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/263:40 pm
SEA
- CRL
2 stops22h 15m
Multiple Airlines
Wed 4/295:35 pm
CRL
- SEA
2 stops31h 25m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$1,084
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:00 am
SEA
- BRU
1 stop17h 00m
United Airlines
Sun 4/197:00 am
BRU
- SEA
1 stop14h 20m
United Airlines
Deal found 3/31![United Airlines logo]()
$924
This Mytrip deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/305:50 am
SEA
- CRL
3 stops24h 30m
Multiple Airlines
Wed 6/109:20 am
CRL
- SEA
3 stops33h 48m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$1,104
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/185:50 am
SEA
- BRU
2 stops29h 10m
United Airlines
Mon 6/159:30 am
BRU
- SEA
2 stops37h 50m
United Airlines
Deal found 4/2![United Airlines logo]()
$931
This Mytrip deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 8/105:45 am
SEA
- CRL
3 stops22h 05m
Multiple Airlines
Tue 8/187:55 am
CRL
- SEA
3 stops46h 12m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$1,107
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated April 5, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated April 5, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 5/241:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 4/1![Icelandair logo]()
$631
This KAYAK deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Tue 5/261:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/1![Icelandair logo]()
$651
This oojo deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/217:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Tue 5/261:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/31![Icelandair logo]()
$625
This Mytrip deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/218:00 am
SEA
- CRL
2 stops27h 35m
Multiple Airlines
Wed 5/279:20 am
CRL
- SEA
3 stops33h 45m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$956
This oojo deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 4/223:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 5/211:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/1![Icelandair logo]()
$623
This KAYAK deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Tue 5/261:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/1![Icelandair logo]()
$650
This oojo deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/233:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sun 4/261:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 3/31![Icelandair logo]()
$605
This Gotogate deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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.
Fri 4/247:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 5/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 4/2![Icelandair logo]()
$580
This Mytrip deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/263:40 pm
SEA
- CRL
3 stops22h 05m
Multiple Airlines
Wed 4/295:35 pm
CRL
- SEA
2 stops31h 25m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$1,019
This FlightHub deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:10 pm
SEA
- BRU
1 stop17h 15m
Turkish Airlines
Fri 5/87:20 am
BRU
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/3![Turkish Airlines logo]()
$641
This Gotogate deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/117:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 5/201:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 4/2![Icelandair logo]()
$618
This Mytrip deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/1110:30 am
SEA
- CRL
2 stops22h 20m
Multiple Airlines
Wed 5/209:20 am
CRL
- SEA
3 stops33h 45m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$1,016
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 April 5, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated April 5, 2026.
This Mytrip deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/203:40 pm
SEA
- CRL
2 stops19h 55m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$256
This oojo deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/2011:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 3/31![Icelandair logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 4/297:00 pm
SEA
- CRL
3 stops28h 20m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$317
This Trip.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/203:40 pm
SEA
- BRU
2 stops17h 35m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/2011:25 pm
SEA
- CRL
2 stops37h 05m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 6/137:35 pm
SEA
- CRL
3 stops40h 40m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/233:40 pm
SEA
- CRL
2 stops31h 25m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$346
This Mytrip deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 4/293:40 pm
SEA
- BRU
2 stops17h 35m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$354
This Cheapflightsfares deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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.
Tue 8/41:30 pm
SEA
- BRU
1 stop21h 55m
British Airways
Deal found 3/31![British Airways logo]()
$357
This TravelUp deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:33 pm
SEA
- BRU
2 stops19h 27m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:29 am
SEA
- BRU
2 stops24h 31m
United Airlines
Deal found 3/31![United Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/2311:25 pm
SEA
- BRU
3 stops48h 30m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$366
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 April 5, 2026.
Round-trip from | $580 (Gotogate) |
|---|---|
One-way from | $256 (Mytrip) |
Popular in | December |
Cheapest in | January |
Average price | $559 |
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 April 5, 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
Sat 4/25
3:40 pm-4:40 pm
2 stops16h 00m
Brussels Bruxelles-National
Sun 5/3
9:50 am-10:40 pm
3 stops21h 50m
$740
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 8/22
3:55 pm-9:40 am
1 stop32h 45m
Brussels Bruxelles-National
Mon 8/31
9:10 pm-1:45 pm
2 stops25h 35m
$767
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 9/13
12:29 pm-8:00 pm
2 stops22h 31m
Brussels Bruxelles-National
Sun 9/27
7:00 am-2:22 pm
2 stops16h 22m
$836
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 5/15
1:21 pm-8:55 am
2 stops34h 34m
Brussels Bruxelles-National
Fri 5/22
12:00 pm-11:10 pm
2 stops20h 10m
$843
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 6/2
7:00 pm-9:15 pm
2 stops17h 15m
Charleroi Brussels
Thu 6/11
7:45 am-6:33 pm
3 stops43h 48m
$847
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 4/21
3:45 pm-8:00 pm
2 stops19h 15m
Brussels Bruxelles-National
Thu 5/21
8:30 am-9:59 pm
2 stops22h 29m
$857
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 4/18
11:59 pm-7:15 am
2 stops22h 16m
Brussels Bruxelles-National
Fri 5/22
10:15 am-7:06 pm
1 stop17h 51m
$862
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/16
3:40 pm-8:55 am
2 stops32h 15m
Brussels Bruxelles-National
Thu 4/23
11:10 am-10:42 pm
2 stops20h 32m
$873
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 4/16
3:40 pm-8:55 am
2 stops32h 15m
Brussels Bruxelles-National
Mon 4/20
10:30 am-12:20 pm
1 stop34h 50m
$886
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 8/8
11:52 pm-9:00 am
1 stop24h 08m
Brussels Bruxelles-National
Wed 8/19
12:45 pm-4:59 pm
1 stop13h 14m
$889
Showing 1-10 of 28 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 $378). Flying from Seattle to Belgium in June is currently the most expensive (average of $505). 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.
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 April 5, 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.
Comfort
7.9
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - 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
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 April 5, 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 8 airlines flying from Seattle to Belgium
Discover the top 8 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 April 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$477 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$697 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$722 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$699 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$632 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$488 | Average$491 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$494 | Average$647 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$518 | Average$680 | FlexibilityNo cancel fee | On-time67% |