$222+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Jun 25 — Jul 21
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 May 26, 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 26, 2026.
This oojo deal was found by Cheapflights users on 5/25. 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.
Sat 10/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/25![Icelandair logo]()
$594
This oojo deal was found by Cheapflights users on 5/24. 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.
Sun 10/183:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/2912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 5/24![Icelandair logo]()
$595
This oojo deal was found by Cheapflights users on 5/24. 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
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/24![Icelandair logo]()
$596
This Gotogate deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 8/313:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/11:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/23![Icelandair logo]()
$600
This oojo deal was found by Cheapflights users on 5/24. 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 9/13:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/24![Icelandair logo]()
$607
This oojo deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 9/167:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 9/301:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/22![Icelandair logo]()
$609
This Kiwi.com deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 10/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sun 10/111:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/22![Icelandair logo]()
$623
This KAYAK deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 9/303:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 10/161:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/22![Icelandair logo]()
$624
This KAYAK deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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.
Tue 9/297:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 10/161:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/22![Icelandair logo]()
$625
This oojo deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 9/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/25![Icelandair logo]()
$629
This Mytrip deal was found by Cheapflights users on 5/25. 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.
Tue 9/83:55 pm
SEA
- CRL
2 stops18h 40m
Multiple Airlines
Mon 9/148:15 pm
CRL
- SEA
2 stops26h 30m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$893
This Mytrip deal was found by Cheapflights users on 5/25. 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.
Sun 8/233:40 pm
SEA
- CRL
3 stops21h 55m
Multiple Airlines
Sat 8/294:20 pm
CRL
- SEA
3 stops37h 40m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$953
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 26, 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 26, 2026.
This Icelandair deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 10/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sat 10/171:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/22![Icelandair logo]()
$770
This British Airways deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:50 pm
SEA
- BRU
1 stop33h 45m
British Airways
Fri 11/69:50 am
BRU
- SEA
1 stop16h 05m
British Airways
Deal found 5/22![British Airways logo]()
$775
This Scandinavian Airlines deal was found by Cheapflights users on 5/24. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:55 pm
SEA
- BRU
2 stops19h 45m
Scandinavian Airlines
Mon 8/3110:20 am
BRU
- SEA
2 stops20h 45m
Scandinavian Airlines
Deal found 5/24![Scandinavian Airlines logo]()
$916
This Mytrip deal was found by Cheapflights users on 5/25. 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.
Tue 9/88:00 am
SEA
- CRL
3 stops26h 35m
Multiple Airlines
Mon 9/148:15 pm
CRL
- SEA
3 stops27h 07m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$967
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Mon 11/212:46 pm
SEA
- BRU
2 stops15h 29m
United Airlines
Fri 11/66:45 am
BRU
- SEA
1 stop15h 15m
United Airlines
Deal found 5/24![United Airlines logo]()
$974
This Delta deal was found by Cheapflights users on 5/25. 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 7/206:05 am
SEA
- BRU
2 stops16h 30m
Delta
Thu 7/308:05 am
BRU
- SEA
2 stops21h 29m
Delta
Deal found 5/25![Delta logo]()
$1,014
This Icelandair deal was found by Cheapflights users on 5/25. 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.
Tue 7/213:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sun 8/21:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 5/25![Icelandair logo]()
$954
This British Airways deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:20 pm
SEA
- BRU
1 stop28h 35m
British Airways
Wed 7/159:15 pm
BRU
- SEA
1 stop23h 20m
British Airways
Deal found 5/22![British Airways logo]()
$1,027
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2311:20 pm
SEA
- BRU
1 stop22h 55m
United Airlines
Wed 7/2912:00 pm
BRU
- SEA
2 stops29h 00m
United Airlines
Deal found 5/25![United Airlines logo]()
$1,071
This Delta deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 7/97:15 am
SEA
- BRU
2 stops17h 25m
Delta
Thu 7/166:20 am
BRU
- SEA
1 stop14h 13m
Delta
Deal found 5/23![Delta logo]()
$1,074
This Kiwi.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Sun 8/28:35 am
CRL
- SEA
2 stops18h 20m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$1,100
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/247:30 am
SEA
- BRU
1 stop15h 15m
United Airlines
Fri 7/3112:00 pm
BRU
- SEA
2 stops29h 00m
United Airlines
Deal found 5/25![United Airlines logo]()
$1,071
This Kiwi.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:10 pm
SEA
- CRL
1 stop28h 30m
Multiple Airlines
Sun 8/28:35 am
CRL
- SEA
2 stops18h 20m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$1,106
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 7/210:52 am
SEA
- BRU
1 stop13h 08m
United Airlines
Thu 7/96:45 am
BRU
- SEA
2 stops21h 51m
United Airlines
Deal found 5/23![United Airlines logo]()
$1,075
This Mytrip deal was found by Cheapflights users on 5/25. 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 6/105:45 am
SEA
- CRL
3 stops24h 50m
Multiple Airlines
Tue 6/166:55 am
CRL
- SEA
3 stops47h 05m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$1,107
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 7/15:30 pm
SEA
- CRL
1 stop15h 15m
Multiple Airlines
Fri 7/178:50 am
CRL
- SEA
1 stop17h 50m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$1,117
This Mytrip deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/610:45 am
SEA
- CRL
3 stops24h 10m
Multiple Airlines
Fri 7/109:50 am
CRL
- SEA
3 stops41h 55m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$1,191
This Mytrip deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 6/166:50 pm
SEA
- CRL
2 stops17h 25m
Multiple Airlines
Mon 6/227:55 am
CRL
- SEA
3 stops35h 12m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$1,197
This Mytrip deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 7/158:00 am
SEA
- CRL
2 stops24h 45m
Multiple Airlines
Wed 7/229:10 am
CRL
- SEA
3 stops33h 57m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$1,204
This Kiwi.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:10 pm
SEA
- CRL
1 stop17h 05m
Multiple Airlines
Tue 7/287:55 am
CRL
- SEA
2 stops18h 15m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$1,206
This Mytrip deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 7/27:00 pm
SEA
- CRL
2 stops17h 30m
Multiple Airlines
Thu 7/97:05 am
CRL
- SEA
2 stops22h 35m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$1,268
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated May 26, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated May 26, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 5/317:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 6/141:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/22![Icelandair logo]()
$806
This FlightHub deal was found by Cheapflights users on 5/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Sun 6/71:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/25![Icelandair logo]()
$877
This Kiwi.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/311:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 6/81:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/25![Icelandair logo]()
$853
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/33:40 pm
SEA
- CRL
2 stops17h 05m
Multiple Airlines
Mon 6/159:40 pm
CRL
- SEA
1 stop28h 30m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$1,166
This Mytrip deal was found by Cheapflights users on 5/25. 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 6/1010:30 am
SEA
- CRL
2 stops20h 15m
Multiple Airlines
Tue 6/166:55 am
CRL
- SEA
3 stops47h 05m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$987
This oojo deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 6/1111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Sun 6/211:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/23![Icelandair logo]()
$864
This oojo deal was found by Cheapflights users on 5/24. 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 6/1611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Thu 6/251:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/24![Icelandair logo]()
$821
This oojo deal was found by Cheapflights users on 5/25. 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 6/1611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Mon 6/221:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 5/25![Icelandair logo]()
$822
This Mytrip deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 6/166:50 pm
SEA
- CRL
2 stops17h 25m
Multiple Airlines
Mon 6/227:55 am
CRL
- SEA
3 stops35h 12m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$1,197
This oojo deal was found by Cheapflights users on 5/25. 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.
Thu 6/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 6/261:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 5/25![Icelandair logo]()
$867
This Kiwi.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Mon 6/297:55 am
CRL
- SEA
2 stops20h 30m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$1,191
This Gotogate deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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.
Tue 6/233:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Tue 6/301:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 5/22![Icelandair logo]()
$894
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 26, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated May 26, 2026.
This Booking.com deal was found by Cheapflights users on 5/25. 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.
Tue 9/226:55 pm
SEA
- BRU
1 stop16h 50m
Aer Lingus
Deal found 5/25![Aer Lingus logo]()
$222
This oojo deal was found by Cheapflights users on 5/24. 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 10/137:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 5/24![Icelandair logo]()
$269
This oojo deal was found by Cheapflights users on 5/25. 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 5/25![Icelandair logo]()
$272
This oojo deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 7/73:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 5/22![Icelandair logo]()
$275
This Icelandair deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 5/21![Icelandair logo]()
$293
This Icelandair deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 8/267:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 5/21![Icelandair logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 7/257:00 pm
SEA
- CRL
3 stops39h 40m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 7/283:40 pm
SEA
- CRL
3 stops31h 30m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 9/203:40 pm
SEA
- CRL
3 stops22h 05m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” 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 7/73:40 pm
SEA
- CRL
3 stops39h 05m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 pm
SEA
- CRL
3 stops17h 15m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:52 am
SEA
- CRL
3 stops21h 03m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$384
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 26, 2026.
Round-trip from | $594 (oojo) |
|---|---|
One-way from | $222 (Booking.com) |
Popular in | June |
Cheapest in | January |
Average price | $656 |
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 26, 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
Sat 10/3
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Sat 10/17
1:50 pm-8:40 pm
1 stop15h 50m
$770
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 11/2
6:50 pm-1:35 pm
1 stop33h 45m
Brussels Bruxelles-National
Fri 11/6
9:50 am-4:55 pm
1 stop16h 05m
$775
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 8/22
3:55 pm-8:40 pm
2 stops19h 45m
Brussels Bruxelles-National
Mon 8/31
10:20 am-10:05 pm
2 stops20h 45m
$916
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Tue 7/21
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Sun 8/2
1:50 pm-11:45 am
1 stop30h 55m
$954
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 9/8
8:00 am-7:35 pm
3 stops26h 35m
Charleroi Brussels
Mon 9/14
8:15 pm-2:22 pm
3 stops27h 07m
$967
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 11/2
12:46 pm-1:15 pm
2 stops15h 29m
Brussels Bruxelles-National
Fri 11/6
6:45 am-1:00 pm
1 stop15h 15m
$974
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 7/20
6:05 am-7:35 am
2 stops16h 30m
Brussels Bruxelles-National
Thu 7/30
8:05 am-8:34 pm
2 stops21h 29m
$1,014
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 7/6
8:20 pm-9:55 am
1 stop28h 35m
Brussels Bruxelles-National
Wed 7/15
9:15 pm-11:35 am
1 stop23h 20m
$1,027
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 7/23
11:20 pm-7:15 am
1 stop22h 55m
Brussels Bruxelles-National
Wed 7/29
12:00 pm-8:00 am
2 stops29h 00m
$1,071
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 7/24
7:30 am-7:45 am
1 stop15h 15m
Brussels Bruxelles-National
Fri 7/31
12:00 pm-8:00 am
2 stops29h 00m
$1,071
Showing 1-10 of 31 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, August is the cheapest month in which you can book a flight from Seattle to Belgium (average of $362). 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 81 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 May 26, 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.
Boarding
8.1
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Belgium. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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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 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from Seattle to Belgium
Discover the top 7 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 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$488 | 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$560 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$494 | Average$663 | FlexibilityNo cancel fee | On-time76% |