$246+ Cheap flights from Seattle (SEA) to Belgium
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Aug 8 — Aug 151
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 July 9, 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 9, 2026.
This oojo deal was found by Cheapflights users on 7/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Sat 10/241:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/8![Icelandair logo]()
$525
This oojo deal was found by Cheapflights users on 7/8. 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 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 7/8![Icelandair logo]()
$527
This oojo deal was found by Cheapflights users on 7/8. 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 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 7/8![Icelandair logo]()
$528
This FlightHub deal was found by Cheapflights users on 7/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Tue 11/1012:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 7/7![Icelandair logo]()
$533
This Expedia deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 8/211:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/4![Icelandair logo]()
$547
This FlightHub deal was found by Cheapflights users on 7/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Tue 11/1012:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 7/7![Icelandair logo]()
$548
This Icelandair deal was found by Cheapflights users on 7/7. 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.
Mon 11/22:35 pm
SEA
- BRU
1 stop12h 20m
Icelandair
Sun 11/812:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 7/7![Icelandair logo]()
$555
This oojo deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Tue 11/1712:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 7/5![Icelandair logo]()
$558
This Sembo deal was found by Cheapflights users on 7/8. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 9/111:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/8![Icelandair logo]()
$559
This oojo deal was found by Cheapflights users on 7/8. 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 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 7/8![Icelandair logo]()
$562
This oojo deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 10/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/6![Icelandair logo]()
$564
This Mytrip deal was found by Cheapflights users on 7/7. 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 9/83:55 pm
SEA
- CRL
2 stops18h 40m
Multiple Airlines
Mon 9/148:15 pm
CRL
- SEA
2 stops26h 30m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$690
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 9, 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 9, 2026.
This Icelandair deal was found by Cheapflights users on 7/8. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Fri 8/281:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/8![Icelandair logo]()
$679
This Mytrip deal was found by Cheapflights users on 7/7. 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 9/83:55 pm
SEA
- CRL
2 stops18h 40m
Multiple Airlines
Mon 9/148:15 pm
CRL
- SEA
2 stops26h 30m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$690
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Wed 11/187:00 am
BRU
- SEA
1 stop14h 00m
United Airlines
Deal found 7/4![United Airlines logo]()
$745
This Delta deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:00 am
SEA
- BRU
1 stop16h 40m
Delta
Fri 11/206:10 am
BRU
- SEA
1 stop14h 37m
Delta
Deal found 7/5![Delta logo]()
$754
This Scandinavian Airlines deal was found by Cheapflights users on 7/7. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:55 pm
SEA
- BRU
2 stops33h 45m
Scandinavian Airlines
Sun 9/279:20 pm
BRU
- SEA
2 stops49h 25m
Scandinavian Airlines
Deal found 7/7![Scandinavian Airlines logo]()
$795
This Mytrip deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/610:40 am
SEA
- CRL
3 stops25h 50m
Multiple Airlines
Thu 8/207:05 am
CRL
- SEA
2 stops23h 02m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/143:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Thu 11/197:00 am
BRU
- SEA
1 stop14h 00m
United Airlines
Deal found 7/4![United Airlines logo]()
$745
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/611:59 pm
SEA
- BRU
1 stop22h 41m
Delta
Thu 8/209:45 am
BRU
- SEA
1 stop19h 38m
Delta
Deal found 7/6![Delta logo]()
$755
This United deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:50 pm
SEA
- BRU
2 stops22h 10m
Multiple Airlines
Wed 8/194:25 pm
BRU
- SEA
1 stop33h 34m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$759
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:42 am
SEA
- BRU
1 stop13h 18m
United Airlines
Sat 11/1410:10 am
BRU
- SEA
1 stop17h 38m
United Airlines
Deal found 7/4![United Airlines logo]()
$763
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Sat 8/2911:00 pm
SEA
- BRU
1 stop25h 00m
United Airlines
Fri 9/1112:00 pm
BRU
- SEA
1 stop17h 18m
United Airlines
Deal found 7/8![United Airlines logo]()
$777
This Mytrip deal was found by Cheapflights users on 7/7. 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 9/166:50 pm
SEA
- CRL
2 stops16h 10m
Multiple Airlines
Thu 9/246:35 am
CRL
- SEA
3 stops23h 29m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$840
This United Airlines deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:10 pm
SEA
- BRU
2 stops35h 50m
United Airlines
Mon 8/319:30 am
BRU
- SEA
2 stops35h 02m
United Airlines
Deal found 7/5![United Airlines logo]()
$807
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Sat 8/293:40 pm
SEA
- CRL
3 stops21h 00m
Multiple Airlines
Fri 9/119:50 am
CRL
- SEA
3 stops41h 55m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$845
This Mytrip deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:50 am
SEA
- CRL
3 stops30h 40m
Multiple Airlines
Mon 9/219:15 pm
CRL
- SEA
3 stops45h 25m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$851
This Mytrip deal was found by Cheapflights users on 7/7. 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.
Sat 9/193:40 pm
SEA
- CRL
2 stops14h 40m
Multiple Airlines
Wed 9/309:20 am
CRL
- SEA
2 stops35h 15m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$885
This Mytrip deal was found by Cheapflights users on 7/9. 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 8/66:50 pm
SEA
- CRL
2 stops17h 40m
Multiple Airlines
Thu 8/137:05 am
CRL
- SEA
2 stops23h 02m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$905
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated July 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated July 9, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:40 pm
SEA
- CRL
3 stops22h 15m
Multiple Airlines
Sun 7/269:05 am
CRL
- SEA
2 stops34h 35m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$985
This Flightnetwork deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 8/191:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/5![Icelandair logo]()
$570
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Tue 8/43:55 pm
SEA
- CRL
2 stops20h 20m
Multiple Airlines
Fri 8/149:55 pm
CRL
- SEA
2 stops24h 50m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$943
This Expedia deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 8/211:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/4![Icelandair logo]()
$547
This Gotogate deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Thu 8/201:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 7/6![Icelandair logo]()
$569
This Mytrip deal was found by Cheapflights users on 7/9. 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 8/610:40 am
SEA
- CRL
3 stops25h 50m
Multiple Airlines
Thu 8/137:05 am
CRL
- SEA
2 stops23h 02m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$714
This Mytrip deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/610:40 am
SEA
- CRL
3 stops25h 50m
Multiple Airlines
Thu 8/207:05 am
CRL
- SEA
2 stops23h 02m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$715
This Booking.com deal was found by Cheapflights users on 7/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/711:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Thu 8/201:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/7![Icelandair logo]()
$579
This oojo deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Tue 8/251:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/6![Icelandair logo]()
$574
This Gotogate deal was found by Cheapflights users on 7/7. 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.
Sat 8/297:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Fri 9/111:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 7/7![Icelandair logo]()
$555
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Sat 8/293:40 pm
SEA
- CRL
3 stops21h 00m
Multiple Airlines
Fri 9/119:50 am
CRL
- SEA
3 stops41h 55m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$845
This oojo deal was found by Cheapflights users on 7/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/303:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 7/8![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 9, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated July 9, 2026.
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Sat 8/2211:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 7/8![Icelandair logo]()
$246
This oojo deal was found by Cheapflights users on 7/9. 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.
Tue 8/47:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/9![Icelandair logo]()
$249
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Sun 8/233:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/8![Icelandair logo]()
$250
This Mytrip deal was found by Cheapflights users on 7/7. 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 7/297:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 7/7![Icelandair logo]()
$252
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Tue 8/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 7/8![Icelandair logo]()
$260
This Icelandair deal was found by Cheapflights users on 7/8. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 7/8![Icelandair logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 7/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:35 pm
SEA
- BRU
1 stop13h 20m
Icelandair
Deal found 7/7![Icelandair logo]()
$284
This oojo deal was found by Cheapflights users on 7/8. 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 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 7/8![Icelandair logo]()
$304
This oojo deal was found by Cheapflights users on 7/7. 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.
Sun 9/63:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 7/7![Icelandair logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 7/8. 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.
Sat 8/227:00 pm
SEA
- CRL
2 stops28h 05m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 7/8. 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.
Mon 8/177:00 pm
SEA
- CRL
3 stops34h 00m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 7/8. 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.
Fri 8/217:00 pm
SEA
- CRL
2 stops28h 15m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$327
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 9, 2026.
Round-trip from | $525 (oojo) |
|---|---|
One-way from | $246 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $713 |
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 9, 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
Mon 8/24
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Fri 8/28
1:50 pm-5:55 pm
1 stop13h 05m
$679
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Tue 9/8
3:55 pm-7:35 pm
2 stops18h 40m
Charleroi Brussels
Mon 9/14
8:15 pm-1:45 pm
2 stops26h 30m
$690
SeattleBrussels
SEA - CRL
SEACRL
Seattle/Tacoma Intl
Thu 8/6
10:40 am-9:30 pm
3 stops25h 50m
Charleroi Brussels
Thu 8/20
7:05 am-9:07 pm
2 stops23h 02m
$715
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 10/11
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Wed 11/18
7:00 am-12:00 pm
1 stop14h 00m
$745
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 10/14
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Thu 11/19
7:00 am-12:00 pm
1 stop14h 00m
$745
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 10/14
6:00 am-7:40 am
1 stop16h 40m
Brussels Bruxelles-National
Fri 11/20
6:10 am-11:47 am
1 stop14h 37m
$754
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 8/6
11:59 pm-7:40 am
1 stop22h 41m
Brussels Bruxelles-National
Thu 8/20
9:45 am-8:23 pm
1 stop19h 38m
$755
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/3
12:50 pm-8:00 pm
2 stops22h 10m
Brussels Bruxelles-National
Wed 8/19
4:25 pm-4:59 pm
1 stop33h 34m
$759
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 10/14
10:42 am-9:00 am
1 stop13h 18m
Brussels Bruxelles-National
Sat 11/14
10:10 am-6:48 pm
1 stop17h 38m
$763
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sat 8/29
11:00 pm-9:00 am
1 stop25h 00m
Brussels Bruxelles-National
Fri 9/11
12:00 pm-8:18 pm
1 stop17h 18m
$777
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 73 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 9, 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
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from Seattle to Belgium. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Belgium
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Complete your trip
Complete your trip to Belgium by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Belgium by cabin class
Find flights from Seattle to Belgium, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Belgium flights
Browse other Seattle and Belgium flight options. Last updated on July 9, 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 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$536 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$620 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$713 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$483 | Average$741 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$494 | Average$672 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$509 | Average$749 | FlexibilityNo cancel fee | On-timeN/A |