$313+ Cheap flights from Seattle (SEA) to Belgium
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Nov 8 — Nov 151
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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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 October 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 October 9, 2026.
This Gotogate deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop12h 20m
Tue 12/812:50 pm -
1 stop13h 10m
Deal found 10/9![Icelandair logo]()
$633
This Kiwi.com deal was found by Cheapflights users on 10/7. 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.
Mon 11/92:35 pm -
1 stop12h 20m
Sun 11/2212:50 pm -
1 stop13h 10m
Deal found 10/7![Icelandair logo]()
$662
This Mytrip deal was found by Cheapflights users on 10/6. 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.
Mon 11/92:35 pm -
2 stops19h 05m
Tue 11/246:15 am -
3 stops19h 45m
Deal found 10/6![Multiple Airlines logo]()
$665
This Icelandair deal was found by Cheapflights users on 10/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:35 pm -
1 stop12h 20m
Thu 2/1112:50 pm -
1 stop13h 10m
Deal found 10/5![Icelandair logo]()
$682
This Cheapflightsfares deal was found by Cheapflights users on 10/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:35 pm -
1 stop12h 20m
Sun 12/1312:50 pm -
1 stop13h 10m
Deal found 10/5![Icelandair logo]()
$686
This Mytrip deal was found by Cheapflights users on 10/9. 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.
Mon 11/232:35 pm -
3 stops35h 15m
Mon 11/308:25 pm -
3 stops29h 35m
Deal found 10/9![Multiple Airlines logo]()
$688
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:35 pm -
1 stop12h 20m
Sun 12/1312:50 pm -
1 stop13h 10m
Deal found 10/6![Icelandair logo]()
$697
This oojo deal was found by Cheapflights users on 10/5. 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 -
1 stop32h 55m
Thu 11/512:50 pm -
1 stop13h 10m
Deal found 10/5![Icelandair logo]()
$702
This Icelandair deal was found by Cheapflights users on 10/7. 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.
Sat 12/52:35 pm -
1 stop12h 20m
Thu 12/1012:50 pm -
1 stop13h 10m
Deal found 10/7![Icelandair logo]()
$710
This Cheapflightsfares deal was found by Cheapflights users on 10/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm -
1 stop12h 15m
Thu 10/2912:50 pm -
1 stop13h 10m
Deal found 10/4![Icelandair logo]()
$728
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 October 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 October 9, 2026.
This United Airlines deal was found by Cheapflights users on 10/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:30 am -
1 stop16h 35m
Tue 11/2411:55 am -
1 stop18h 01m
Deal found 10/6![United Airlines logo]()
$789
This United deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/106:50 am -
1 stop16h 15m
Wed 3/176:45 am -
1 stop15h 15m
Deal found 10/7![Multiple Airlines logo]()
$816
This Justfly.com deal was found by Cheapflights users on 10/4. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:39 am -
2 stops38h 01m
Wed 11/1810:20 am -
2 stops22h 37m
Deal found 10/4![Scandinavian Airlines logo]()
$839
This British Airways deal was found by Cheapflights users on 10/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/21:35 pm -
1 stop20h 40m
Mon 4/128:50 pm -
1 stop23h 45m
Deal found 10/8![British Airways logo]()
$849
This Delta deal was found by Cheapflights users on 10/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:59 pm -
1 stop22h 41m
Tue 11/38:05 am -
2 stops21h 04m
Deal found 10/8![Delta logo]()
$971
This United Airlines deal was found by Cheapflights users on 10/5. 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.
Thu 11/196:30 am -
1 stop16h 35m
Thu 11/267:00 am -
1 stop14h 00m
Deal found 10/5![United Airlines logo]()
$846
This United deal was found by Cheapflights users on 10/4. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:30 pm -
1 stop33h 25m
Wed 11/1810:00 am -
2 stops37h 37m
Deal found 10/4![Multiple Airlines logo]()
$856
This Scandinavian Airlines deal was found by Cheapflights users on 10/8. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/17:20 am -
2 stops41h 20m
Thu 4/85:45 am -
2 stops25h 19m
Deal found 10/8![Scandinavian Airlines logo]()
$896
This United deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:17 pm -
1 stop23h 48m
Sat 11/147:10 pm -
1 stop26h 50m
Deal found 10/9![Multiple Airlines logo]()
$858
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Fri 4/211:00 am -
1 stop13h 00m
Fri 4/910:15 am -
1 stop17h 44m
Deal found 10/8![United Airlines logo]()
$878
This Expedia deal was found by Cheapflights users on 10/4. 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 4/13:15 pm -
2 stops19h 45m
Sat 4/1010:55 am -
1 stop15h 04m
Deal found 10/4![Multiple Airlines logo]()
$901
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated October 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated October 9, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 10/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 pm -
1 stop32h 55m
Thu 11/512:50 pm -
1 stop13h 10m
Deal found 10/5![Icelandair logo]()
$737
This oojo deal was found by Cheapflights users on 10/5. 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 -
1 stop32h 55m
Thu 11/512:50 pm -
1 stop13h 10m
Deal found 10/5![Icelandair logo]()
$702
This oojo deal was found by Cheapflights users on 10/6. 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.
Wed 10/147:00 pm -
1 stop32h 55m
Sun 10/2512:50 pm -
1 stop15h 50m
Deal found 10/6![Icelandair logo]()
$733
This KAYAK deal was found by Cheapflights users on 10/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:00 pm -
1 stop32h 55m
Tue 11/1012:50 pm -
1 stop13h 10m
Deal found 10/5![Icelandair logo]()
$739
This Ovago deal was found by Cheapflights users on 10/5. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/173:40 pm -
1 stop12h 15m
Thu 11/512:50 pm -
1 stop13h 10m
Deal found 10/5![Icelandair logo]()
$738
This Cheapflightsfares deal was found by Cheapflights users on 10/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm -
1 stop12h 15m
Thu 10/2912:50 pm -
1 stop13h 10m
Deal found 10/4![Icelandair logo]()
$728
This Kiwi.com deal was found by Cheapflights users on 10/7. 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.
Mon 11/92:35 pm -
1 stop12h 20m
Sun 11/2212:50 pm -
1 stop13h 10m
Deal found 10/7![Icelandair logo]()
$662
This Mytrip deal was found by Cheapflights users on 10/6. 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.
Mon 11/92:35 pm -
2 stops19h 05m
Tue 11/246:15 am -
3 stops19h 45m
Deal found 10/6![Multiple Airlines logo]()
$665
This Gotogate deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop12h 20m
Tue 12/812:50 pm -
1 stop13h 10m
Deal found 10/9![Icelandair logo]()
$633
This Mytrip deal was found by Cheapflights users on 10/9. 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.
Mon 11/232:35 pm -
3 stops35h 15m
Mon 11/308:25 pm -
3 stops29h 35m
Deal found 10/9![Multiple Airlines logo]()
$688
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 October 9, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
This FlightHub deal was found by Cheapflights users on 10/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/243:40 pm -
1 stop12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Icelandair logo]()
$313
This FlightHub deal was found by Cheapflights users on 10/7. 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 10/217:00 pm -
1 stop32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Icelandair logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 10/7. 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.
Thu 10/227:00 pm -
1 stop32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Icelandair logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:40 pm -
1 stop12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Icelandair logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:35 pm -
3 stops33h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/263:35 pm -
3 stops33h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 10/7. 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.
Sun 11/82:35 pm -
2 stops35h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 10/7. 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.
Sat 12/52:35 pm -
1 stop12h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Icelandair logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 10/7. 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.
Sun 10/187:10 pm -
1 stop29h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/191:50 pm -
3 stops38h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$561
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/292:50 pm -
3 stops38h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$610
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 12/252:35 pm -
3 stops38h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$677
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 October 9, 2026.
Round-trip from | $662 (Kiwi.com) |
|---|---|
One-way from | $313 (FlightHub) |
Popular in | June |
Cheapest in | January |
Average price | $675 |
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 October 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
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 10/19
7:10 pm-9:40 am
1 stop29h 30m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$429
Quickest round-trip
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Wed 10/28
3:35 pm-7:40 pm
3 stops20h 05m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$445
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Fri 12/25
2:50 pm-9:40 am
3 stops33h 50m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$470
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Thu 11/19
1:50 pm-8:20 pm
3 stops45h 30m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$493
SeattleAntwerp
SEA Seattle/Tacoma Intl - ANR Antwerp Deurne
SEAANR
Seattle/Tacoma Intl
Thu 11/19
1:50 pm-1:10 pm
3 stops38h 20m
Antwerp Deurne
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$561
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Thu 10/29
8:05 pm-5:15 pm
1 stop37h 10m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$579
SeattleAntwerp
SEA Seattle/Tacoma Intl - ANR Antwerp Deurne
SEAANR
Seattle/Tacoma Intl
Thu 10/29
2:50 pm-1:05 pm
3 stops38h 15m
Antwerp Deurne
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$610
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Tue 10/27
8:05 pm-2:15 pm
1 stop34h 10m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$612
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Thu 11/19
7:05 pm-5:15 pm
1 stop37h 10m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$612
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Tue 10/20
8:30 am-8:00 pm
3 stops26h 30m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$634
Showing 1-10 of 28 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-ANR
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-ANR
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 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 October 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.
Entertainment
7.2
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Related info for your journey
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Alternative routes for Seattle to Belgium
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Complete your trip to Belgium by adding a car rental and/or hotel reservation to your travel itinerary.
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Seattle and Belgium flights
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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 October 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$381 | Average$557 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$686 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$680 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$496 | Average$782 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$509 | Average$849 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$522 | Average$847 | FlexibilityNo cancel fee | On-time69% |