$226+ 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
Sep 28 — Oct 51
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Belgium with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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
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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 August 29, 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 August 29, 2026.
This Gotogate deal was found by Cheapflights users on 8/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm -
1 stop32h 55m
Sun 10/181:50 pm -
1 stop15h 50m
Deal found 8/25![Icelandair logo]()
$514
This oojo deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/227:00 pm -
1 stop32h 55m
Thu 11/512:50 pm -
1 stop13h 10m
Deal found 8/29![Icelandair logo]()
$517
This Gotogate deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 -
1 stop28h 30m
Sun 12/1312:50 pm -
1 stop13h 10m
Deal found 8/28![Icelandair logo]()
$518
This Mytrip deal was found by Cheapflights users on 8/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:40 pm -
1 stop12h 15m
Sat 10/241:50 pm -
1 stop13h 05m
Deal found 8/24![Icelandair logo]()
$519
This Mytrip deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/113:40 pm -
1 stop12h 15m
Thu 10/151:50 pm -
1 stop15h 50m
Deal found 8/27![Icelandair logo]()
$520
This oojo deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/113:40 pm -
1 stop12h 15m
Sat 10/241:50 pm -
1 stop13h 05m
Deal found 8/27![Icelandair logo]()
$522
This oojo deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 -
1 stop32h 55m
Thu 10/151:50 pm -
1 stop15h 50m
Deal found 8/27![Icelandair logo]()
$524
This FlightHub deal was found by Cheapflights users on 8/25. 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.
Wed 10/213:40 pm -
1 stop12h 15m
Thu 10/2912:50 pm -
1 stop13h 10m
Deal found 8/25![Icelandair logo]()
$526
This FlightHub deal was found by Cheapflights users on 8/25. 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.
Tue 10/207:00 pm -
1 stop32h 55m
Thu 10/2912:50 pm -
1 stop13h 10m
Deal found 8/25![Icelandair logo]()
$527
This oojo deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:40 pm -
1 stop12h 15m
Wed 9/301:50 pm -
1 stop13h 05m
Deal found 8/27![Icelandair logo]()
$535
This Mytrip deal was found by Cheapflights users on 8/25. 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 10/136:50 pm -
2 stops17h 25m
Tue 10/209:00 pm -
3 stops30h 32m
Deal found 8/25![Multiple Airlines logo]()
$554
This Mytrip deal was found by Cheapflights users on 8/25. 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 9/158:00 am -
3 stops28h 15m
Tue 9/229:00 pm -
3 stops30h 32m
Deal found 8/25![Multiple Airlines logo]()
$571
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 August 29, 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 August 29, 2026.
This Icelandair deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 10/113:40 pm -
1 stop12h 15m
Thu 10/151:50 pm -
1 stop15h 50m
Deal found 8/28![Icelandair logo]()
$550
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:00 am -
2 stops21h 15m
Tue 11/1010:10 am -
1 stop17h 53m
Deal found 8/26![United Airlines logo]()
$725
This United deal was found by Cheapflights users on 8/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:13 pm -
1 stop24h 47m
Tue 10/209:10 am -
2 stops33h 55m
Deal found 8/25![Multiple Airlines logo]()
$768
This Scandinavian Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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.
Sun 10/113:55 pm -
2 stops17h 20m
Thu 10/1510:20 am -
2 stops21h 29m
Deal found 8/28![Scandinavian Airlines logo]()
$837
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Tue 11/1712:45 pm -
2 stops15h 30m
Tue 12/811:55 am -
1 stop17h 25m
Deal found 8/24![United Airlines logo]()
$725
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 12/712:46 pm -
2 stops15h 29m
Tue 2/1610:10 am -
1 stop17h 49m
Deal found 8/26![United Airlines logo]()
$730
This Mytrip deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:05 pm -
2 stops19h 40m
Tue 10/277:55 am -
2 stops17h 00m
Deal found 8/27![Multiple Airlines logo]()
$885
This United Airlines deal was found by Cheapflights users on 8/24. 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 2/812:46 pm -
2 stops15h 29m
Tue 2/1611:55 am -
1 stop17h 15m
Deal found 8/24![United Airlines logo]()
$735
This Mytrip deal was found by Cheapflights users on 8/25. 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 10/136:05 pm -
2 stops19h 40m
Tue 10/207:55 am -
2 stops16h 45m
Deal found 8/25![Multiple Airlines logo]()
$892
This United Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 11/1110:50 am -
1 stop13h 05m
Sun 11/157:00 am -
1 stop14h 00m
Deal found 8/27![United Airlines logo]()
$775
This Mytrip deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 10/115:40 pm -
2 stops16h 50m
Thu 10/156:45 am -
2 stops18h 15m
Deal found 8/26![Multiple Airlines logo]()
$914
This United Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/227:00 am -
1 stop17h 00m
Thu 11/510:10 am -
2 stops20h 09m
Deal found 8/27![United Airlines logo]()
$809
This Mytrip deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:55 pm -
3 stops18h 30m
Sun 10/119:05 am -
2 stops20h 35m
Deal found 8/29![Multiple Airlines logo]()
$929
This United Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:15 pm -
2 stops39h 45m
Sat 10/176:20 am -
1 stop15h 00m
Deal found 8/27![United Airlines logo]()
$838
This Mytrip deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/223:00 pm -
3 stops20h 20m
Thu 11/54:55 pm -
2 stops29h 05m
Deal found 8/27![Multiple Airlines logo]()
$932
This United Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/2512:43 pm -
2 stops15h 32m
Wed 9/308:30 am -
1 stop12h 25m
Deal found 8/27![United Airlines logo]()
$842
This Mytrip deal was found by Cheapflights users on 8/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:55 pm -
3 stops18h 30m
Fri 10/168:45 am -
2 stops18h 10m
Deal found 8/24![Multiple Airlines logo]()
$966
This Mytrip deal was found by Cheapflights users on 8/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:55 pm -
3 stops21h 50m
Sat 10/2410:30 am -
2 stops19h 10m
Deal found 8/24![Multiple Airlines logo]()
$989
This Mytrip deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/83:00 pm -
3 stops21h 30m
Thu 10/156:35 am -
2 stops18h 25m
Deal found 8/29![Multiple Airlines logo]()
$1,008
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/77:10 pm -
1 stop28h 15m
Fri 10/96:25 am -
2 stops16h 20m
Deal found 8/29![Multiple Airlines logo]()
$1,040
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated August 29, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated August 29, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 8/24. 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 9/111:25 pm -
1 stop28h 30m
Wed 9/91:50 pm -
1 stop30h 55m
Deal found 8/24![Icelandair logo]()
$538
This oojo deal was found by Cheapflights users on 8/24. 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.
Wed 9/23:40 pm -
1 stop12h 15m
Wed 9/91:50 pm -
1 stop30h 55m
Deal found 8/24![Icelandair logo]()
$692
This Gotogate deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 -
1 stop28h 30m
Sun 12/1312:50 pm -
1 stop13h 10m
Deal found 8/28![Icelandair logo]()
$518
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/77:10 pm -
1 stop28h 15m
Fri 10/96:25 am -
2 stops16h 20m
Deal found 8/29![Multiple Airlines logo]()
$1,040
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/97:10 pm -
1 stop28h 30m
Fri 10/96:25 am -
2 stops16h 20m
Deal found 8/29![Multiple Airlines logo]()
$1,047
This Mytrip deal was found by Cheapflights users on 8/25. 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 9/158:00 am -
3 stops28h 15m
Tue 9/229:00 pm -
3 stops30h 32m
Deal found 8/25![Multiple Airlines logo]()
$571
This Mytrip deal was found by Cheapflights users on 8/25. 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 9/158:00 am -
3 stops26h 50m
Tue 9/226:55 pm -
3 stops32h 37m
Deal found 8/25![Multiple Airlines logo]()
$778
This oojo deal was found by Cheapflights users on 8/25. 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.
Wed 9/167:00 pm -
1 stop32h 55m
Wed 9/301:50 pm -
1 stop13h 05m
Deal found 8/25![Icelandair logo]()
$537
This Gotogate deal was found by Cheapflights users on 8/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:50 am -
2 stops16h 20m
Tue 9/296:20 am -
2 stops16h 57m
Deal found 8/25![Multiple Airlines logo]()
$761
This oojo deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:40 pm -
1 stop12h 15m
Wed 9/301:50 pm -
1 stop13h 05m
Deal found 8/27![Icelandair logo]()
$535
This Mytrip deal was found by Cheapflights users on 8/25. 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.
Fri 9/252:10 pm -
2 stops21h 15m
Tue 9/299:00 pm -
2 stops28h 59m
Deal found 8/25![Multiple Airlines logo]()
$740
This Mytrip deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:00 pm -
2 stops16h 25m
Wed 9/305:30 pm -
3 stops33h 25m
Deal found 8/26![Multiple Airlines logo]()
$900
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 August 29, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated August 29, 2026.
This Mytrip deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 -
1 stop12h 15m
Deal found 8/27![Icelandair logo]()
$226
This Mytrip deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 10/283:35 pm -
1 stop12h 20m
Deal found 8/28![Icelandair logo]()
$231
This oojo deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 -
1 stop32h 55m
Deal found 8/27![Icelandair logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 9/293:55 pm -
2 stops20h 20m
Deal found 8/28![Multiple Airlines logo]()
$236
This Mytrip deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/273:40 pm -
1 stop12h 15m
Deal found 8/27![Icelandair logo]()
$238
This Mytrip deal was found by Cheapflights users on 8/25. 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 9/167:00 pm -
1 stop32h 55m
Deal found 8/25![Icelandair logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/143:40 pm -
1 stop12h 15m
Deal found 8/27![Icelandair logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/253:55 pm -
2 stops31h 20m
Deal found 8/29![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/157:00 pm -
1 stop32h 55m
Deal found 8/27![Icelandair logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/207:00 pm -
1 stop32h 55m
Deal found 8/27![Icelandair logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/103:55 pm -
2 stops31h 10m
Deal found 8/29![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/273:55 pm -
3 stops32h 35m
Deal found 8/27![Multiple Airlines logo]()
$261
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 August 29, 2026.
Round-trip from | $514 (Gotogate) |
|---|---|
One-way from | $226 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $811 |
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 7,457,451 searches. Data last updated August 29, 2026.
Use the filters below to find and compare flights from Seattle to Belgium that are best for you.
Fly from
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Route
Depart
Return
Cheapest round-trip
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Sun 10/11
3:40 pm-12:55 pm
1 stop12h 15m
Brussels Bruxelles-National
Thu 10/15
1:50 pm-8:40 pm
1 stop15h 50m
$550
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Tue 11/3
7:00 am-1:15 pm
2 stops21h 15m
Brussels Bruxelles-National
Tue 11/10
10:10 am-7:03 pm
1 stop17h 53m
$725
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Tue 11/17
12:45 pm-1:15 pm
2 stops15h 30m
Brussels Bruxelles-National
Tue 12/8
11:55 am-8:20 pm
1 stop17h 25m
$725
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 12/7
12:46 pm-1:15 pm
2 stops15h 29m
Brussels Bruxelles-National
Tue 2/16
10:10 am-6:59 pm
1 stop17h 49m
$730
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 2/8
12:46 pm-1:15 pm
2 stops15h 29m
Brussels Bruxelles-National
Tue 2/16
11:55 am-8:10 pm
1 stop17h 15m
$735
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Tue 10/13
11:13 pm-9:00 am
1 stop24h 47m
Brussels Bruxelles-National
Tue 10/20
9:10 am-10:05 am
2 stops33h 55m
$768
Quickest round-trip
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Wed 11/11
10:50 am-8:55 am
1 stop13h 05m
Brussels Bruxelles-National
Sun 11/15
7:00 am-12:00 pm
1 stop14h 00m
$775
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Thu 10/22
7:00 am-9:00 am
1 stop17h 00m
Brussels Bruxelles-National
Thu 11/5
10:10 am-9:19 pm
2 stops20h 09m
$809
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Sun 10/11
3:55 pm-6:15 pm
2 stops17h 20m
Brussels Bruxelles-National
Thu 10/15
10:20 am-10:49 pm
2 stops21h 29m
$837
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Sat 10/3
7:15 pm-8:00 pm
2 stops39h 45m
Brussels Bruxelles-National
Sat 10/17
6:20 am-12:20 pm
1 stop15h 00m
$838
Showing 1-10 of 39 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 $510). Flying from Seattle to Belgium in June is currently the most expensive (average of $1,284). 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 72 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 August 29, 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
Entertainment
7.2
Boarding
7.8
Food
7.3
Overall
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Entertainment
7.2
Boarding
7.8
Food
7.3
Overall
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Entertainment
7.2
Boarding
7.8
Food
7.3
Overall
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Entertainment
7.2
Boarding
7.8
Food
7.3
Overall
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Entertainment
7.2
Boarding
7.8
Food
7.3
Overall
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Entertainment
7.2
Boarding
7.8
Food
7.3
Overall
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
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 August 29, 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 7,457,451 searches. Data last updated August 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$382 | Average$562 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$624 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$864 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$494 | Average$746 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$502 | Average$789 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$509 | Average$806 | FlexibilityNo cancel fee | On-timeN/A |