$225+ Cheap flights from Seattle (SEA) to Belgium
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Aug 15 — Aug 221
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Belgium
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to BelgiumExplore the most affordable flight options available from Seattle to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2026.
Explore the most affordable flight options available from Seattle to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2026.
This oojo deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 7/15![Icelandair logo]()
$526
This oojo deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 7/15![Icelandair logo]()
$527
This Gotogate deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 9/511:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/14![Icelandair logo]()
$530
This Gotogate deal was found by Cheapflights users on 7/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 9/171:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/12![Icelandair logo]()
$534
This Mytrip deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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
Fri 9/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/14![Icelandair logo]()
$538
This oojo deal was found by Cheapflights users on 7/11. 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.
Thu 9/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 9/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/11![Icelandair logo]()
$540
This oojo deal was found by Cheapflights users on 7/11. 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 9/111:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/11![Icelandair logo]()
$543
This Mytrip deal was found by Cheapflights users on 7/11. 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.
Thu 9/38:00 am
SEA
- CRL
2 stops28h 30m
Multiple Airlines
Fri 9/1810:00 pm
CRL
- SEA
2 stops27h 59m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$551
This Icelandair deal was found by Cheapflights users on 7/12. 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 Icelandair 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 10/221:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/12![Icelandair logo]()
$555
This oojo deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 9/211:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/13![Icelandair logo]()
$563
This Mytrip deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Tue 8/251:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/13![Icelandair logo]()
$570
This Mytrip deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 9/83:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Mon 9/149:15 pm
CRL
- SEA
3 stops32h 49m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$797
Best flights from Seattle to BelgiumDiscover carefully curated flight deals from Seattle to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 16, 2026.
Discover carefully curated flight deals from Seattle to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 16, 2026.
This Icelandair deal was found by Cheapflights users on 7/12. 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 Icelandair 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 10/221:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/12![Icelandair logo]()
$555
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 11/610:52 am
SEA
- BRU
2 stops17h 23m
United Airlines
Wed 11/117:00 am
BRU
- SEA
1 stop14h 00m
United Airlines
Deal found 7/15![United Airlines logo]()
$725
This Mytrip deal was found by Cheapflights users on 7/11. 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.
Thu 9/35:50 am
SEA
- CRL
3 stops30h 40m
Multiple Airlines
Fri 9/185:30 pm
CRL
- SEA
3 stops32h 29m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$768
This Delta deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:20 am
SEA
- BRU
1 stop15h 20m
Delta
Mon 9/2110:25 am
BRU
- SEA
1 stop34h 22m
Delta
Deal found 7/13![Delta logo]()
$785
This Cheapflightsfares deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sat 10/171:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/16![Icelandair logo]()
$689
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/123:00 pm
SEA
- BRU
2 stops37h 15m
United Airlines
Thu 10/159:10 am
BRU
- SEA
2 stops39h 52m
United Airlines
Deal found 7/15![United Airlines logo]()
$761
This Mytrip deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 9/83:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Mon 9/149:15 pm
CRL
- SEA
3 stops32h 49m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$797
This Cheapflightsfares deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/16![Icelandair logo]()
$744
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:52 am
SEA
- BRU
1 stop13h 03m
United Airlines
Mon 11/304:55 pm
BRU
- SEA
2 stops38h 02m
United Airlines
Deal found 7/11![United Airlines logo]()
$766
This Mytrip deal was found by Cheapflights users on 7/12. 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.
Tue 9/13:40 pm
SEA
- CRL
2 stops20h 35m
Multiple Airlines
Wed 9/95:30 pm
CRL
- SEA
3 stops33h 25m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$809
This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/1210:40 am
SEA
- BRU
2 stops24h 20m
United Airlines
Wed 8/1912:45 pm
BRU
- SEA
2 stops38h 44m
United Airlines
Deal found 7/14![United Airlines logo]()
$767
This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:40 am
SEA
- BRU
2 stops19h 35m
United Airlines
Mon 8/242:25 pm
BRU
- SEA
1 stop30h 30m
United Airlines
Deal found 7/14![United Airlines logo]()
$770
This United Airlines deal was found by Cheapflights users on 7/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Thu 10/229:10 am
BRU
- SEA
2 stops39h 52m
United Airlines
Deal found 7/12![United Airlines logo]()
$778
This Mytrip deal was found by Cheapflights users on 7/11. 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.
Tue 9/88:00 am
SEA
- CRL
3 stops28h 15m
Multiple Airlines
Wed 9/161:15 pm
CRL
- SEA
3 stops35h 45m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$992
This United Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/227:20 pm
SEA
- BRU
2 stops39h 40m
United Airlines
Mon 8/319:30 am
BRU
- SEA
2 stops35h 02m
United Airlines
Deal found 7/16![United Airlines logo]()
$789
This Mytrip deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Mon 8/248:50 am
CRL
- SEA
2 stops35h 55m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$1,009
This Mytrip deal was found by Cheapflights users on 7/11. 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.
Sun 9/63:40 pm
SEA
- CRL
2 stops22h 15m
Multiple Airlines
Wed 9/96:40 am
CRL
- SEA
2 stops18h 00m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$1,027
This Mytrip deal was found by Cheapflights users on 7/11. 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 11/252:35 pm
SEA
- CRL
2 stops17h 05m
Multiple Airlines
Mon 11/3010:55 am
CRL
- SEA
3 stops43h 04m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$1,031
This Mytrip deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
SEA
- CRL
2 stops28h 15m
Multiple Airlines
Tue 8/257:55 am
CRL
- SEA
2 stops16h 45m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$1,089
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated July 16, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated July 16, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Mon 8/177:55 am
CRL
- SEA
2 stops20h 30m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$1,246
This Mytrip deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 8/127:00 am
SEA
- CRL
3 stops23h 35m
Multiple Airlines
Wed 8/199:55 pm
CRL
- SEA
2 stops28h 25m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$1,215
This Gotogate deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/177:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 8/281:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/14![Icelandair logo]()
$607
This Mytrip deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Fri 8/289:50 am
CRL
- SEA
2 stops32h 50m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$978
This Mytrip deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
- CRL
2 stops16h 35m
Multiple Airlines
Mon 8/248:50 am
CRL
- SEA
2 stops35h 55m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$1,009
This Gotogate deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/187:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Tue 8/251:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/14![Icelandair logo]()
$563
This Gotogate deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/186:50 pm
SEA
- BRU
1 stop12h 25m
Multiple Airlines
Tue 8/259:55 am
BRU
- SEA
2 stops17h 37m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$703
This Mytrip deal was found by Cheapflights users on 7/11. 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.
Tue 8/187:00 pm
SEA
- CRL
2 stops17h 15m
Multiple Airlines
Tue 8/254:00 pm
CRL
- SEA
2 stops34h 55m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$1,008
This oojo deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 8/227:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Mon 8/311:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/13![Icelandair logo]()
$611
This Gotogate deal was found by Cheapflights users on 7/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/12![Icelandair logo]()
$555
This Flightnetwork deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Fri 9/41:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/14![Icelandair logo]()
$574
This oojo deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/307:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/14![Icelandair logo]()
$580
One-way flights from Seattle to BelgiumSearch for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated July 16, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated July 16, 2026.
This Mytrip deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 10/43:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/14![Icelandair logo]()
$225
This oojo deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/15![Icelandair logo]()
$229
This Mytrip deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 10/183:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/15![Icelandair logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 10/47:00 pm
SEA
- CRL
3 stops29h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$247
This oojo deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 7/16![Icelandair logo]()
$248
This oojo deal was found by Cheapflights users on 7/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/12![Icelandair logo]()
$249
This Icelandair deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/263:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/14![Icelandair logo]()
$259
This FlightHub deal was found by Cheapflights users on 7/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/283:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/12![Icelandair logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2411:25 pm
SEA
- BRU
2 stops48h 35m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:00 pm
SEA
- CRL
3 stops27h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:25 pm
SEA
- CRL
2 stops47h 40m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:25 pm
SEA
- CRL
3 stops24h 20m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$325
Find flight deals from Seattle to Belgium
Keep the following information in mind while searching for Seattle to Belgium flight deals. Data was last updated July 16, 2026.
Round-trip from | $526 (oojo) |
|---|---|
One-way from | $225 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $733 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Belgium that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 16, 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 10/18
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Thu 10/22
1:50 pm-5:55 pm
1 stop13h 05m
$555
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 10/9
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Sat 10/17
1:50 pm-8:40 pm
1 stop15h 50m
$689
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 11/6
10:52 am-1:15 pm
2 stops17h 23m
Brussels Bruxelles-National
Wed 11/11
7:00 am-12:00 pm
1 stop14h 00m
$725
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 8/22
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Mon 8/31
1:50 pm-8:40 pm
1 stop15h 50m
$744
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/12
3:00 pm-1:15 pm
2 stops37h 15m
Brussels Bruxelles-National
Thu 10/15
9:10 am-4:02 pm
2 stops39h 52m
$761
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 11/25
10:52 am-8:55 am
1 stop13h 03m
Brussels Bruxelles-National
Mon 11/30
4:55 pm-9:57 pm
2 stops38h 02m
$766
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 8/12
10:40 am-8:00 pm
2 stops24h 20m
Brussels Bruxelles-National
Wed 8/19
12:45 pm-6:29 pm
2 stops38h 44m
$767
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 9/3
5:50 am-9:30 pm
3 stops30h 40m
Charleroi Brussels
Fri 9/18
5:30 pm-4:59 pm
3 stops32h 29m
$768
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/17
8:40 am-1:15 pm
2 stops19h 35m
Brussels Bruxelles-National
Mon 8/24
2:25 pm-11:55 am
1 stop30h 30m
$770
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/18
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Thu 10/22
9:10 am-4:02 pm
2 stops39h 52m
$778
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-BRU
SEA-CRL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Belgium
SEA-BE0
SEA-BRU
SEA-CRL
What is the cheapest month to book a flight from Seattle to Belgium?
Currently, January is the cheapest month in which you can book a flight from Seattle to Belgium (average of $375). Flying from Seattle to Belgium in June is currently the most expensive (average of $693). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Seattle to Belgium?
Booking 71 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Belgium. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Belgium
Get insights into the airlines that provide service to Belgium. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belgium. Reviews last updated July 16, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, andUnited Airlines from Seattle to Belgium to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.4
Boarding
7.8
Entertainment
7.2
Comfort
7.7
Food
7.3
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Entertainment
7.2
Comfort
7.7
Food
7.3
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Entertainment
7.2
Comfort
7.7
Food
7.3
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Entertainment
7.2
Comfort
7.7
Food
7.3
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Entertainment
7.2
Comfort
7.7
Food
7.3
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Entertainment
7.2
Comfort
7.7
Food
7.3
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from Seattle to Belgium. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
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 July 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Seattle to Belgium
Discover the top 6 airlines that operate flights from Seattle to Belgium. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$535 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$620 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$713 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$749 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$494 | Average$675 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$502 | Average$741 | FlexibilityNo cancel fee | On-time69% |