$297+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Jun 11 — Jun 181
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Belgium with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 May 12, 2026.
Explore the most affordable flight options available from Seattle to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 12, 2026.
This Gotogate deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/2912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 5/7![Icelandair logo]()
$642
This Mytrip deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 10/51:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/11![Icelandair logo]()
$645
This oojo deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/11![Icelandair logo]()
$650
This Gotogate deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/111:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/11![Icelandair logo]()
$662
This oojo deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/11![Icelandair logo]()
$663
This oojo deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/11![Icelandair logo]()
$665
This Icelandair deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/11:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/7![Icelandair logo]()
$682
This Gotogate deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 9/241:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/9![Icelandair logo]()
$698
This oojo deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:55 pm
SEA
- BRU
1 stop32h 45m
Scandinavian Airlines
Sun 9/277:00 pm
BRU
- SEA
2 stops51h 45m
Scandinavian Airlines
Deal found 5/9![Scandinavian Airlines logo]()
$726
This Mytrip deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:00 am
SEA
- CRL
3 stops27h 00m
Multiple Airlines
Wed 9/239:20 am
CRL
- SEA
3 stops42h 25m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$986
This Mytrip deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:45 am
SEA
- CRL
3 stops29h 15m
Multiple Airlines
Fri 9/119:50 am
CRL
- SEA
3 stops41h 55m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$990
This Mytrip deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/305:40 pm
SEA
- CRL
2 stops18h 20m
Multiple Airlines
Thu 9/36:35 am
CRL
- SEA
2 stops18h 25m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$991
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 May 12, 2026.
Discover carefully curated flight deals from Seattle to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 12, 2026.
This Icelandair deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/11:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/9![Icelandair logo]()
$683
This United Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:20 pm
SEA
- BRU
2 stops39h 40m
United Airlines
Thu 10/156:20 am
BRU
- SEA
2 stops36h 32m
United Airlines
Deal found 5/8![United Airlines logo]()
$779
This British Airways deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:20 pm
SEA
- BRU
1 stop15h 05m
British Airways
Thu 10/19:15 pm
BRU
- SEA
1 stop23h 20m
British Airways
Deal found 5/11![British Airways logo]()
$834
This Air Canada deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:00 am
SEA
- BRU
2 stops27h 00m
Air Canada
Thu 10/19:25 am
BRU
- SEA
2 stops33h 27m
Air Canada
Deal found 5/11![Air Canada logo]()
$958
This Mytrip deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:45 am
SEA
- CRL
3 stops29h 15m
Multiple Airlines
Fri 9/119:50 am
CRL
- SEA
3 stops41h 55m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$990
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/95:20 am
SEA
- BRU
2 stops19h 20m
Delta
Wed 7/2910:25 am
BRU
- SEA
2 stops19h 09m
Delta
Deal found 5/10![Delta logo]()
$1,086
This United Airlines deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:20 pm
SEA
- BRU
2 stops39h 40m
United Airlines
Thu 10/159:55 am
BRU
- SEA
1 stop20h 09m
United Airlines
Deal found 5/10![United Airlines logo]()
$779
This United Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:45 am
SEA
- BRU
2 stops19h 30m
United Airlines
Wed 8/196:20 am
BRU
- SEA
2 stops17h 02m
United Airlines
Deal found 5/7![United Airlines logo]()
$890
This Mytrip deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/305:40 pm
SEA
- CRL
2 stops18h 20m
Multiple Airlines
Thu 9/36:35 am
CRL
- SEA
2 stops18h 25m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$991
This FlightHub deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:45 am
SEA
- BRU
2 stops16h 25m
Air Canada
Thu 6/259:55 am
BRU
- SEA
1 stop20h 12m
Air Canada
Deal found 5/11![Air Canada logo]()
$1,050
This Mytrip deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Sat 9/128:45 am
CRL
- SEA
3 stops33h 55m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$1,023
This United Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2711:03 am
SEA
- BRU
2 stops17h 12m
United Airlines
Thu 10/16:20 am
BRU
- SEA
1 stop15h 00m
United Airlines
Deal found 5/7![United Airlines logo]()
$940
This Mytrip deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:45 am
SEA
- CRL
3 stops24h 50m
Multiple Airlines
Wed 8/195:35 pm
CRL
- SEA
2 stops32h 24m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,038
This United Airlines deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:00 am
SEA
- BRU
1 stop17h 00m
United Airlines
Sun 8/1610:15 am
BRU
- SEA
1 stop14h 52m
United Airlines
Deal found 5/10![United Airlines logo]()
$963
This Mytrip deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 pm
SEA
- CRL
3 stops18h 55m
Multiple Airlines
Sun 1/106:45 pm
CRL
- SEA
3 stops31h 15m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$1,045
This United Airlines deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2310:45 am
SEA
- BRU
2 stops37h 10m
United Airlines
Tue 6/309:55 am
BRU
- SEA
1 stop20h 12m
United Airlines
Deal found 5/9![United Airlines logo]()
$1,044
This Mytrip deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:40 pm
SEA
- CRL
3 stops22h 05m
Multiple Airlines
Sun 9/279:05 am
CRL
- SEA
2 stops20h 35m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,063
This Mytrip deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:40 pm
SEA
- CRL
3 stops18h 45m
Multiple Airlines
Sun 9/279:05 am
CRL
- SEA
2 stops20h 35m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,082
This Mytrip deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:00 am
SEA
- CRL
3 stops27h 00m
Multiple Airlines
Sat 9/128:45 am
CRL
- SEA
3 stops33h 55m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$1,112
This Mytrip deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 7/123:40 pm
SEA
- CRL
2 stops16h 30m
Multiple Airlines
Thu 7/236:35 am
CRL
- SEA
3 stops36h 05m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,115
This Mytrip deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:50 pm
SEA
- CRL
2 stops17h 40m
Multiple Airlines
Wed 7/299:10 am
CRL
- SEA
3 stops42h 35m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$1,160
This Mytrip deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:45 am
SEA
- CRL
3 stops25h 00m
Multiple Airlines
Mon 6/296:25 am
CRL
- SEA
3 stops36h 15m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,178
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated May 12, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated May 12, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 6/151:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/7![Icelandair logo]()
$912
This Cheapflightsfares deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Mon 6/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/7![Icelandair logo]()
$916
This Mytrip deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:40 pm
SEA
- BRU
3 stops33h 00m
Multiple Airlines
Sun 6/149:20 pm
BRU
- SEA
3 stops32h 20m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$876
This Mytrip deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:40 pm
SEA
- BRU
3 stops33h 00m
Multiple Airlines
Thu 6/1111:20 am
BRU
- SEA
2 stops18h 20m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$899
This Gotogate deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 6/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/9![Icelandair logo]()
$908
This oojo deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sun 6/141:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 5/7![Icelandair logo]()
$919
This Mytrip deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:40 pm
SEA
- CRL
2 stops22h 15m
Multiple Airlines
Thu 6/117:45 am
CRL
- SEA
3 stops44h 00m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,055
This Mytrip deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:45 am
SEA
- CRL
3 stops24h 45m
Multiple Airlines
Tue 6/168:50 am
CRL
- SEA
2 stops17h 09m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$1,141
This Gotogate deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1011:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Sun 6/141:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 5/8![Icelandair logo]()
$910
This Mytrip deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:40 pm
SEA
- BRU
3 stops31h 05m
Multiple Airlines
Sun 6/148:50 pm
BRU
- SEA
2 stops28h 20m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$911
This Kiwi.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:30 pm
SEA
- CRL
1 stop15h 15m
Multiple Airlines
Fri 6/195:35 pm
CRL
- SEA
2 stops34h 10m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$1,165
This oojo deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Thu 6/251:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/10![Icelandair logo]()
$920
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 May 12, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated May 12, 2026.
This Mytrip deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 5/7![Icelandair logo]()
$297
This oojo deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 5/11![Icelandair logo]()
$304
This oojo deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 5/10![Icelandair logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 pm
SEA
- CRL
2 stops17h 15m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$308
This Icelandair deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/43:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 5/11![Icelandair logo]()
$319
This Trip.com deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:00 pm
SEA
- BRU
2 stops16h 30m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:00 pm
SEA
- CRL
3 stops28h 55m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 pm
SEA
- BRU
2 stops30h 40m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$335
This oojo deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 5/11![Icelandair logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2511:25 pm
SEA
- CRL
3 stops24h 20m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:35 pm
SEA
- CRL
2 stops28h 40m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$350
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 May 12, 2026.
Round-trip from | $642 (Gotogate) |
|---|---|
One-way from | $297 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $647 |
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 May 12, 2026.
Use the filters below to find and compare flights from Seattle to Belgium that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 9/27
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Thu 10/1
1:50 pm-5:55 pm
1 stop13h 05m
$683
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/5
7:20 pm-8:00 pm
2 stops39h 40m
Brussels Bruxelles-National
Thu 10/15
6:20 am-9:52 am
2 stops36h 32m
$779
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 10/3
7:20 pm-8:00 pm
2 stops39h 40m
Brussels Bruxelles-National
Thu 10/15
9:55 am-9:04 pm
1 stop20h 09m
$779
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 9/29
8:20 pm-8:25 pm
1 stop15h 05m
Brussels Bruxelles-National
Thu 10/1
9:15 pm-11:35 am
1 stop23h 20m
$834
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 8/5
8:45 am-1:15 pm
2 stops19h 30m
Brussels Bruxelles-National
Wed 8/19
6:20 am-2:22 pm
2 stops17h 02m
$890
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 9/27
11:03 am-1:15 pm
2 stops17h 12m
Brussels Bruxelles-National
Thu 10/1
6:20 am-12:20 pm
1 stop15h 00m
$940
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 9/29
8:00 am-8:00 pm
2 stops27h 00m
Brussels Bruxelles-National
Thu 10/1
9:25 am-9:52 am
2 stops33h 27m
$958
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 8/5
7:00 am-9:00 am
1 stop17h 00m
Brussels Bruxelles-National
Sun 8/16
10:15 am-4:07 pm
1 stop14h 52m
$963
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Wed 9/2
5:45 am-8:00 pm
3 stops29h 15m
Charleroi Brussels
Fri 9/11
9:50 am-6:45 pm
3 stops41h 55m
$990
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Sun 8/30
5:40 pm-9:00 pm
2 stops18h 20m
Charleroi Brussels
Thu 9/3
6:35 am-4:00 pm
2 stops18h 25m
$991
Showing 1-10 of 34 resultsSorted by cheapest first
Best time to book a flight from Seattle to Belgium
Have a flexible travel schedule? Discover the best time to fly to Belgium from Seattle with our price prediction graph.
SEA-CRL
SEA-BRU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Belgium
SEA-BE0
SEA-CRL
SEA-BRU
How far ahead should I book a flight from Seattle to Belgium?
Booking 86 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.
What is the cheapest month to book a flight from Seattle to Belgium?
Currently, August is the cheapest month in which you can book a flight from Seattle to Belgium (average of $219). Flying from Seattle to Belgium in June is currently the most expensive (average of $439). 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 May 12, 2026.
Peruse reviews from past customers who have flown with Delta,KLM, andUnited Airlines from Seattle to Belgium to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Belgium. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Belgium
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Belgium by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Belgium by cabin class
Find flights from Seattle to Belgium, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Belgium flights
Browse other Seattle and Belgium flight options. Last updated on May 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 May 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$483 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$624 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$741 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$719 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$623 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$485 | Average$680 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$488 | Average$491 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$494 | Average$663 | FlexibilityNo cancel fee | On-time76% |