$221+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Oct 29 — Nov 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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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 September 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 September 29, 2026.
This oojo deal was found by Cheapflights users on 9/27. 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.
Wed 12/22:35 pm -
1 stop12h 20m
Sun 12/612:50 pm -
1 stop13h 10m
Deal found 9/27![Icelandair logo]()
$508
This Gotogate deal was found by Cheapflights users on 9/27. 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 Gotogate 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 9/27![Icelandair logo]()
$512
This oojo deal was found by Cheapflights users on 9/27. 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 10/183:40 pm -
1 stop12h 15m
Thu 10/2912:50 pm -
1 stop13h 10m
Deal found 9/27![Icelandair logo]()
$519
This deal was found by Cheapflights users on 9/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/143:40 pm -
1 stop12h 15m
Thu 1/1412:50 pm -
1 stop13h 10m
Deal found 9/27![Icelandair logo]()
$523
This Justfly.com deal was found by Cheapflights users on 9/27. 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 Justfly.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
Thu 11/1212:50 pm -
1 stop13h 10m
Deal found 9/27![Icelandair logo]()
$525
This FlightHub deal was found by Cheapflights users on 9/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm -
1 stop12h 15m
Sun 1/1712:50 pm -
1 stop13h 10m
Deal found 9/26![Icelandair logo]()
$529
This FlightHub deal was found by Cheapflights users on 9/26. 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 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
Sun 1/1712:50 pm -
1 stop13h 10m
Deal found 9/26![Icelandair logo]()
$531
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/143:40 pm -
1 stop12h 15m
Tue 11/1012:50 pm -
1 stop13h 10m
Deal found 9/25![Icelandair logo]()
$541
This Kiwi.com deal was found by Cheapflights users on 9/28. 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 10/137:00 pm -
1 stop32h 55m
Thu 11/1212:50 pm -
1 stop13h 10m
Deal found 9/28![Icelandair logo]()
$542
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop12h 20m
Tue 12/112:50 pm -
1 stop13h 10m
Deal found 9/25![Icelandair logo]()
$543
This Icelandair deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:40 pm -
1 stop12h 15m
Thu 11/1212:50 pm -
1 stop13h 10m
Deal found 9/25![Icelandair logo]()
$546
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 September 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 September 29, 2026.
This Icelandair deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm -
1 stop12h 15m
Thu 10/151:50 pm -
1 stop15h 50m
Deal found 9/25![Icelandair logo]()
$551
This United deal was found by Cheapflights users on 9/28. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2711:15 pm -
1 stop24h 50m
Tue 11/310:00 am -
2 stops37h 37m
Deal found 9/28![Multiple Airlines logo]()
$737
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/138:00 am -
1 stop14h 15m
Fri 1/1510:10 am -
1 stop21h 29m
Deal found 9/25![United Airlines logo]()
$748
This Delta deal was found by Cheapflights users on 9/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
1 stop20h 00m
Tue 11/178:05 am -
1 stop12h 42m
Deal found 9/28![Delta logo]()
$774
This Icelandair deal was found by Cheapflights users on 9/26. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:00 pm -
1 stop32h 55m
Sun 1/1712:50 pm -
1 stop13h 10m
Deal found 9/26![Icelandair logo]()
$553
This United deal was found by Cheapflights users on 9/28. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:56 pm -
1 stop24h 59m
Tue 11/1710:00 am -
2 stops37h 37m
Deal found 9/28![Multiple Airlines logo]()
$758
This United Airlines deal was found by Cheapflights users on 9/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:43 am -
2 stops19h 32m
Sun 12/137:00 am -
1 stop14h 00m
Deal found 9/29![United Airlines logo]()
$769
This Icelandair deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm -
1 stop12h 15m
Sun 11/812:50 pm -
1 stop13h 10m
Deal found 9/25![Icelandair logo]()
$708
This United Airlines deal was found by Cheapflights users on 9/27. 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 12/210:48 am -
2 stops17h 27m
Sun 12/67:00 am -
1 stop14h 00m
Deal found 9/27![United Airlines logo]()
$769
This United Airlines deal was found by Cheapflights users on 9/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/303:50 pm -
1 stop13h 20m
Tue 11/1011:55 am -
1 stop18h 01m
Deal found 9/28![United Airlines logo]()
$779
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:00 am -
1 stop16h 05m
Sun 12/137:00 am -
1 stop14h 00m
Deal found 9/25![United Airlines logo]()
$823
Last-minute flights from Seattle to BelgiumDiscover last-minute flight deals from Seattle to Belgium. Data last updated September 29, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Belgium. Data last updated September 29, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 9/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm -
1 stop12h 15m
Sun 1/1712:50 pm -
1 stop13h 10m
Deal found 9/26![Icelandair logo]()
$529
This Icelandair deal was found by Cheapflights users on 9/24. 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 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 9/24![Icelandair logo]()
$551
This FlightHub deal was found by Cheapflights users on 9/26. 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 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
Sun 1/1712:50 pm -
1 stop13h 10m
Deal found 9/26![Icelandair logo]()
$531
This Kiwi.com deal was found by Cheapflights users on 9/28. 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 10/137:00 pm -
1 stop32h 55m
Thu 11/1212:50 pm -
1 stop13h 10m
Deal found 9/28![Icelandair logo]()
$542
This deal was found by Cheapflights users on 9/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/143:40 pm -
1 stop12h 15m
Thu 1/1412:50 pm -
1 stop13h 10m
Deal found 9/27![Icelandair logo]()
$523
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Wed 10/143:40 pm -
1 stop12h 15m
Tue 11/1012:50 pm -
1 stop13h 10m
Deal found 9/25![Icelandair logo]()
$541
This Icelandair deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:40 pm -
1 stop12h 15m
Thu 11/1212:50 pm -
1 stop13h 10m
Deal found 9/25![Icelandair logo]()
$546
This oojo deal was found by Cheapflights users on 9/27. 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 10/183:40 pm -
1 stop12h 15m
Thu 10/2912:50 pm -
1 stop13h 10m
Deal found 9/27![Icelandair logo]()
$519
This Justfly.com deal was found by Cheapflights users on 9/27. 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 Justfly.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
Tue 11/1012:50 pm -
1 stop13h 10m
Deal found 9/27![Icelandair logo]()
$525
This Icelandair deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 pm -
1 stop32h 55m
Thu 11/512:50 pm -
1 stop13h 10m
Deal found 9/25![Icelandair logo]()
$548
This Gotogate deal was found by Cheapflights users on 9/27. 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 Gotogate 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 9/27![Icelandair logo]()
$512
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 September 29, 2026.
Search for one-way flight options from Seattle to Belgium. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
This Booking.com deal was found by Cheapflights users on 9/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:35 pm -
1 stop12h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Icelandair logo]()
$221
This Mytrip deal was found by Cheapflights users on 9/27. 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.
Mon 11/162:35 pm -
1 stop12h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Icelandair logo]()
$226
This Booking.com deal was found by Cheapflights users on 9/28. 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 Booking.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 9/28![Icelandair logo]()
$233
This Cheapflightsfares deal was found by Cheapflights users on 9/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:40 pm -
1 stop12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Icelandair logo]()
$237
This FlightHub deal was found by Cheapflights users on 9/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm -
1 stop12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Icelandair logo]()
$238
This oojo deal was found by Cheapflights users on 9/27. 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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Icelandair logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:40 pm -
1 stop12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Icelandair logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:00 pm -
1 stop32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Icelandair logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:00 pm -
1 stop32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Icelandair logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 10/63:55 pm -
3 stops41h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$485
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Mon 11/162:35 pm -
3 stops38h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 12/162:35 pm -
3 stops38h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$501
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 September 29, 2026.
Round-trip from | $506 (Booking.com) |
|---|---|
One-way from | $221 (Booking.com) |
Popular in | June |
Cheapest in | January |
Average price | $832 |
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 September 29, 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
Thu 10/22
7:00 pm-9:40 am
2 stops29h 40m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$390
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Tue 10/13
11:59 pm-9:40 am
2 stops24h 41m
Brussels Bruxelles-National
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$463
SeattleAntwerp
SEA Seattle/Tacoma Intl - ANR Antwerp Deurne
SEAANR
Seattle/Tacoma Intl
Tue 10/6
3:55 pm-6:00 pm
3 stops41h 05m
Antwerp Deurne
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$487
SeattleAntwerp
SEA Seattle/Tacoma Intl - ANR Antwerp Deurne
SEAANR
Seattle/Tacoma Intl
Mon 11/16
2:35 pm-2:20 pm
3 stops38h 45m
Antwerp Deurne
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$499
SeattleAntwerp
SEA Seattle/Tacoma Intl - ANR Antwerp Deurne
SEAANR
Seattle/Tacoma Intl
Mon 11/2
2:35 pm-9:45 pm
3 stops46h 10m
Antwerp Deurne
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$516
SeattleAntwerp
SEA Seattle/Tacoma Intl - ANR Antwerp Deurne
SEAANR
Seattle/Tacoma Intl
Sat 10/24
7:10 pm-1:15 pm
3 stops34h 05m
Antwerp Deurne
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$518
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
$551
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Sat 10/10
7:00 pm-12:55 pm
1 stop32h 55m
Brussels Bruxelles-National
Sun 1/17
12:50 pm-5:00 pm
1 stop13h 10m
$553
SeattleAntwerp
SEA Seattle/Tacoma Intl - ANR Antwerp Deurne
SEAANR
Seattle/Tacoma Intl
Tue 10/13
7:00 pm-6:00 pm
3 stops38h 00m
Antwerp Deurne
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$554
SeattleAntwerp
SEA Seattle/Tacoma Intl - ANR Antwerp Deurne
SEAANR
Seattle/Tacoma Intl
Sat 10/10
3:40 pm-1:20 pm
3 stops36h 40m
Antwerp Deurne
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$571
Showing 1-10 of 30 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 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 September 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.
Boarding
7.8
Overall
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Overall
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Overall
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Overall
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Overall
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Overall
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Entertainment
7.2
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.
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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 September 29, 2026.
Popular flight searches
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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 September 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$381 | Average$557 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$406 | Average$621 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$616 | 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% |