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Cheap flights from Belgium to Seattle from $377

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belgium to Seattle departing on 11/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Belgium to Seattle

Recent round-trip flight deals from Belgium to Seattle

Enter your travel dates to find the best prices.
Aer Lingus Logo
10:15 am - 6:20 pmBRU-SEA
17h 05m1 stop
Aer Lingus Logo
8:05 pm - 6:15 pmSEA-BRU
13h 10m1 stop
$594Aer Lingus
Find Deal
lun., nov. 24 - lun., dic. 8
Icelandair Logo
12:50 pm - 5:00 pmBRU-SEA
13h 10m1 stop
Icelandair Logo
2:35 pm - 11:55 amSEA-BRU
12h 20m1 stop
$716Icelandair
Find Deal
jue., nov. 6 - mié., nov. 19
Lufthansa Logo
10:00 am - 7:16 pmBRU-SEA
18h 16m2 stops
Lufthansa Logo
7:00 am - 8:55 amSEA-BRU
16h 55m1 stop
$740Lufthansa
Find Deal
jue., nov. 6 - mié., nov. 19
Lufthansa Logo
10:00 am - 7:16 pmBRU-SEA
18h 16m2 stops
Lufthansa Logo
7:00 am - 8:55 amSEA-BRU
16h 55m1 stop
$743Lufthansa
Find Deal
lun., nov. 24 - lun., dic. 8
British Airways Logo
10:15 am - 4:55 pmBRU-SEA
15h 40m1 stop
British Airways Logo
1:35 pm - 1:40 pmSEA-BRU
15h 05m1 stop
$754British Airways
Find Deal
jue., nov. 13 - sáb., nov. 29
British Airways Logo
8:35 pm - 11:30 amBRU-SEA
23h 55m1 stop
British Airways Logo
2:46 pm - 3:25 pmSEA-BRU
15h 39m2 stops
$755British Airways
Find Deal
jue., nov. 13 - vie., nov. 28
Delta Logo
6:15 am - 8:50 pmBRU-SEA
23h 35m2 stops
Delta Logo
9:59 pm - 9:00 amSEA-BRU
26h 01m1 stop
$786Delta
Find Deal
sáb., nov. 29 - sáb., dic. 6
Delta Logo
8:00 am - 8:50 pmBRU-SEA
21h 50m2 stops
Delta Logo
7:30 am - 2:35 pmSEA-BRU
22h 05m2 stops
$788Delta
Find Deal
dom., abr. 5 - sáb., abr. 11
KLM Logo
8:05 am - 11:50 amBRU-SEA
12h 45m1 stop
KLM Logo
3:05 pm - 2:15 pmSEA-BRU
14h 10m1 stop
$869KLM
Find Deal
vie., dic. 19 - mar., dic. 30
KLM Logo
8:05 am - 11:50 amBRU-SEA
12h 45m1 stop
KLM Logo
3:05 pm - 2:15 pmSEA-BRU
14h 10m1 stop
$872KLM
Find Deal
jue., dic. 18 - lun., dic. 29

British Airways flights from Belgium to Seattle

Our best British Airways deals on Belgium to Seattle flight tickets
British Airways
Nov 13
BRU10:15 amBrussels Bruxelles-National
15h 40m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
Nov 29
SEA1:35 pmSeattle/Tacoma Intl
15h 05m
1 stop
BRU1:40 pmBrussels Bruxelles-National
$754
Find similar
British Airways
Nov 13
BRU8:35 pmBrussels Bruxelles-National
23h 55m
1 stop
SEA11:30 amSeattle/Tacoma Intl
Nov 28
SEA2:46 pmSeattle/Tacoma Intl
15h 39m
2 stops
BRU3:25 pmBrussels Bruxelles-National
$755
Find similar
British Airways
Nov 14
BRU9:20 pmBrussels Bruxelles-National
23h 10m
1 stop
SEA11:30 amSeattle/Tacoma Intl
Nov 28
SEA2:46 pmSeattle/Tacoma Intl
15h 39m
2 stops
BRU3:25 pmBrussels Bruxelles-National
$757
Find similar

American Airlines flights from Belgium to Seattle

Our best American Airlines deals on Belgium to Seattle flight tickets
American Airlines
Nov 10
BRU5:30 pmBrussels Bruxelles-National
27h 00m
1 stop
SEA11:30 amSeattle/Tacoma Intl
Nov 24
SEA6:50 pmSeattle/Tacoma Intl
33h 45m
1 stop
BRU1:35 pmBrussels Bruxelles-National
$752
Find similar
American Airlines
Nov 10
BRU11:50 amBrussels Bruxelles-National
20h 28m
2 stops
SEA11:18 pmSeattle/Tacoma Intl
Nov 24
SEA2:19 pmSeattle/Tacoma Intl
21h 41m
2 stops
BRU9:00 pmBrussels Bruxelles-National
$758
Find similar
American Airlines
Nov 13
BRU10:15 amBrussels Bruxelles-National
22h 03m
2 stops
SEA11:18 pmSeattle/Tacoma Intl
Nov 28
SEA11:42 amSeattle/Tacoma Intl
18h 43m
2 stops
BRU3:25 pmBrussels Bruxelles-National
$769
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Belgium to Seattle 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, momondo users made 832,500 searches. Data last updated octubre 16, 2025.
Use the filters below to find and compare flights from Belgium to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

lun. 11/24

10:15 am-6:20 pm

1 stop17h 05m

Seattle/Tacoma Intl

lun. 12/8

8:05 pm-6:15 pm

1 stop13h 10m

$594

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jue. 11/6

12:50 pm-5:00 pm

1 stop13h 10m

Seattle/Tacoma Intl

mié. 11/19

2:35 pm-11:55 am

1 stop12h 20m

$716

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jue. 11/6

10:00 am-7:16 pm

2 stops18h 16m

Seattle/Tacoma Intl

mié. 11/19

7:00 am-8:55 am

1 stop16h 55m

$740

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

lun. 11/24

10:00 am-7:16 pm

2 stops18h 16m

Seattle/Tacoma Intl

lun. 12/8

7:00 am-8:55 am

1 stop16h 55m

$743

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jue. 11/13

10:15 am-4:55 pm

1 stop15h 40m

Seattle/Tacoma Intl

sáb. 11/29

1:35 pm-1:40 pm

1 stop15h 05m

$754

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jue. 11/13

8:35 pm-11:30 am

1 stop23h 55m

Seattle/Tacoma Intl

vie. 11/28

2:46 pm-3:25 pm

2 stops15h 39m

$755

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

sáb. 11/29

6:15 am-8:50 pm

2 stops23h 35m

Seattle/Tacoma Intl

sáb. 12/6

9:59 pm-9:00 am

1 stop26h 01m

$786

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

dom. 4/5

8:00 am-8:50 pm

2 stops21h 50m

Seattle/Tacoma Intl

sáb. 4/11

7:30 am-2:35 pm

2 stops22h 05m

$788

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

vie. 12/19

8:05 am-11:50 am

1 stop12h 45m

Seattle/Tacoma Intl

mar. 12/30

3:05 pm-2:15 pm

1 stop14h 10m

$869

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jue. 12/18

8:05 am-11:50 am

1 stop12h 45m

Seattle/Tacoma Intl

lun. 12/29

3:05 pm-2:15 pm

1 stop14h 10m

$872

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Belgium to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, December is the cheapest month to fly from Belgium to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $620. If you don’t want to visit Seattle in December, then you should wait until January to fly from Belgium, when ticket prices are also cheap, with an average price of $624.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Belgium is on a Sunday. momondo users have found tickets for Sunday departures for as low as $696. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Belgium because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $979.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Belgium in the morning is the least expensive time of day to depart. momondo users have found prices as low as $809 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $956. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Belgium when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $708 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Belgium for as low as $645 on momondo.

Cheap Belgium to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belgium to Seattle

Direct flights

None
There are no direct flights from Belgium to Seattle. There are no popular flight routes from Belgium to Seattle.
Search flight deals

  • When did momondo last update prices for flights from Belgium to Seattle/Tacoma Intl Airport?

    Prices for flights from Belgium to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from Belgium to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Belgium to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belgium to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Belgium to Seattle

Compare and see reviews for airlines that fly from Belgium to Seattle with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $586Free CancellationRating
7.0
556 reviews
Search Icelandair flights
British AirwaysPriceFrom $592Free CancellationRating
6.7
7,457 reviews
Search British Airways flights
United AirlinesPriceFrom $597Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
KLMPriceFrom $605Free CancellationRating
7.7
1,404 reviews
Search KLM flights
DeltaPriceFrom $616Free CancellationRating
7.9
7,980 reviews
Search Delta flights
FinnairPriceFrom $651Free CancellationRating
7.6
1,332 reviews
Search Finnair flights
LufthansaPriceFrom $674Free CancellationRating
6.8
7,497 reviews
Search Lufthansa flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Federal Way
Tukwila
Lakewood
Kirkland
Fife
Centralia
Shoreline
Cle Elum
Redmond
Westport

Why use momondo?

Why should I use momondo to find a flight deal from Belgium to Seattle?

Finding the right flight to Seattle from Belgium is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from Belgium to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Belgium with this policy.

How can momondo help me find flights from Belgium to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Belgium to Seattle.

I’m not ready to book a flight from Belgium to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Belgium and alert you when they change.

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sáb. 11/15
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