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Cheap flights from Washington to Belgium from $327

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Belgium departing on 11/23. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
3:35 pm - 11:55 amSEA-BRU
12h 20m1 stop
Icelandair Logo
1:50 pm - 8:45 pmBRU-SEA
15h 55m1 stop
$381Icelandair
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mié., mar. 25 - lun., mar. 30
Icelandair Logo
2:35 pm - 11:55 amSEA-BRU
12h 20m1 stop
Icelandair Logo
12:50 pm - 5:00 pmBRU-SEA
13h 10m1 stop
$383Icelandair
Find Deal
jue., nov. 27 - jue., dic. 11
Multiple Airlines Logo
8:00 pm - 7:50 amSEA-BRU
26h 50m2 stops
Multiple Airlines Logo
10:00 am - 7:16 pmBRU-SEA
18h 16m2 stops
$468Multiple Airlines
Find Deal
jue., dic. 4 - jue., dic. 11
Multiple Airlines Logo
3:15 pm - 8:00 pmPDX-BRU
19h 45m2 stops
Multiple Airlines Logo
6:45 am - 6:30 pmBRU-PDX
20h 45m2 stops
$473Multiple Airlines
Find Deal
mié., dic. 3 - dom., dic. 7
Air Canada Logo
3:15 pm - 8:55 amPDX-BRU
32h 40m2 stops
Air Canada Logo
10:00 am - 11:48 amBRU-PDX
34h 48m2 stops
$476Air Canada
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mar., dic. 2 - mié., dic. 10
Air Canada Logo
7:00 pm - 7:50 amPDX-BRU
51h 50m2 stops
Air Canada Logo
10:00 am - 6:45 pmBRU-PDX
41h 45m2 stops
$480Air Canada
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mié., dic. 3 - jue., dic. 11
United Airlines Logo
5:00 am - 1:15 pmSEA-BRU
23h 15m2 stops
United Airlines Logo
10:00 am - 11:49 amBRU-SEA
33h 49m2 stops
$480United Airlines
Find Deal
mar., feb. 10 - mar., mar. 10
Lufthansa Logo
10:05 am - 1:10 pmSEA-BRU
18h 05m2 stops
Lufthansa Logo
7:00 am - 1:10 pmBRU-SEA
14h 10m1 stop
$499Lufthansa
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mar., feb. 10 - mar., mar. 10
United Airlines Logo
8:17 am - 7:15 amSEA-BRU
13h 58m1 stop
United Airlines Logo
8:30 am - 12:20 pmBRU-SEA
12h 50m1 stop
$503United Airlines
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mar., mar. 3 - mié., abr. 1
Lufthansa Logo
9:50 am - 7:50 amPDX-BRU
37h 00m2 stops
Lufthansa Logo
7:10 pm - 12:37 amBRU-PDX
38h 27m2 stops
$524Lufthansa
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sáb., dic. 6 - sáb., dic. 13

Lufthansa flights from State of Washington to Belgium

Our best Lufthansa deals on State of Washington to Belgium flight tickets
Lufthansa
Feb 10
SEA10:05 amSeattle/Tacoma Intl
18h 05m
2 stops
BRU1:10 pmBrussels Bruxelles-National
Mar 10
BRU7:00 amBrussels Bruxelles-National
14h 10m
1 stop
SEA1:10 pmSeattle/Tacoma Intl
$499
Find similar
Lufthansa
Dec 6
PDX9:50 amPortland
37h 00m
2 stops
BRU7:50 amBrussels Bruxelles-National
Dec 13
BRU7:10 pmBrussels Bruxelles-National
38h 27m
2 stops
PDX12:37 amPortland
$524
Find similar
Lufthansa
Dec 1
SEA2:00 pmSeattle/Tacoma Intl
21h 40m
1 stop
BRU8:40 pmBrussels Bruxelles-National
Dec 8
BRU10:00 amBrussels Bruxelles-National
18h 16m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$526
Find similar

KLM flights from State of Washington to Belgium

Our best KLM deals on State of Washington to Belgium flight tickets
KLM
Nov 12
PDX7:05 amPortland
16h 55m
1 stop
BRU9:00 amBrussels Bruxelles-National
Nov 19
BRU8:05 amBrussels Bruxelles-National
12h 20m
1 stop
PDX11:25 amPortland
$705
Find similar
KLM
Mar 13
PDX6:04 amPortland
17h 56m
1 stop
BRU8:00 amBrussels Bruxelles-National
Mar 21
BRU10:00 amBrussels Bruxelles-National
17h 18m
1 stop
PDX7:18 pmPortland
$706
Find similar
KLM
Mar 13
PDX2:25 pmPortland
11h 45m
1 stop
BRU10:10 amBrussels Bruxelles-National
Mar 21
BRU2:45 pmBrussels Bruxelles-National
29h 40m
1 stop
PDX12:25 pmPortland
$710
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momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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, momondo users made 832,500 searches. Data last updated noviembre 6, 2025.
Use the filters below to find and compare flights from Washington to Belgium that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 3/25

3:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

lun. 3/30

1:50 pm-8:45 pm

1 stop15h 55m

$381

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

jue. 11/27

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

jue. 12/11

12:50 pm-5:00 pm

1 stop13h 10m

$383

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

jue. 12/4

8:00 pm-7:50 am

2 stops26h 50m

Brussels Bruxelles-National

jue. 12/11

10:00 am-7:16 pm

2 stops18h 16m

$468

PortlandBrussels

PDX - BRU

PDXBRU

Portland

mié. 12/3

3:15 pm-8:00 pm

2 stops19h 45m

Brussels Bruxelles-National

dom. 12/7

6:45 am-6:30 pm

2 stops20h 45m

$473

PortlandBrussels

PDX - BRU

PDXBRU

Portland

mar. 12/2

3:15 pm-8:55 am

2 stops32h 40m

Brussels Bruxelles-National

mié. 12/10

10:00 am-11:48 am

2 stops34h 48m

$476

PortlandBrussels

PDX - BRU

PDXBRU

Portland

mié. 12/3

7:00 pm-7:50 am

2 stops51h 50m

Brussels Bruxelles-National

jue. 12/11

10:00 am-6:45 pm

2 stops41h 45m

$480

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mar. 2/10

5:00 am-1:15 pm

2 stops23h 15m

Brussels Bruxelles-National

mar. 3/10

10:00 am-11:49 am

2 stops33h 49m

$480

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mar. 2/10

10:05 am-1:10 pm

2 stops18h 05m

Brussels Bruxelles-National

mar. 3/10

7:00 am-1:10 pm

1 stop14h 10m

$499

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mar. 3/3

8:17 am-7:15 am

1 stop13h 58m

Brussels Bruxelles-National

mié. 4/1

8:30 am-12:20 pm

1 stop12h 50m

$503

PortlandBrussels

PDX - BRU

PDXBRU

Portland

sáb. 12/6

9:50 am-7:50 am

2 stops37h 00m

Brussels Bruxelles-National

sáb. 12/13

7:10 pm-12:37 am

2 stops38h 27m

$524

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 Belgium from

How to get the cheapest flight ticket from State of Washington to Belgium

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 Belgium?

In general, October is the cheapest month to fly from State of Washington to Belgium. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $517. If you are unable to visit Belgium during the month of October, then departing from State of Washington during the month September is also very affordable. Most momondo users find prices during this month for around $518.

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

Our data shows that Tuesday is the least expensive day to fly to Belgium. Tickets to fly out on this day can be as low as $626. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $783. These prices are subject to change though, so be sure to set up a Price Alert for flights to Belgium.

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

Our most recent data shows that the best time of day to fly to Belgium is in the morning. Flights from State of Washington to Belgium during this time can be as low as $668. Flights to Belgium are more costly at noon, with an average ticket price of $738. 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 Belgium?

You are more likely to see cheaper flights to Belgium from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Belgium for around $627 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belgium from State of Washington for as low as $524 on momondo.

Can stopping save me money on State of Washington to Belgium flights?

You could potentially save up to 17% on your flight if you consider stops on a State of Washington to Belgium flight.

Cheap State of Washington to Belgium flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Belgium

Direct flights

None
There are no direct flights from State of Washington to Belgium. There are no popular flight routes from State of Washington to Belgium.
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  • When did momondo last update prices for flights from Washington to Belgium?

    Prices for flights from Washington to Belgium are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington to Belgium?

  • How old do you have to be to fly from Washington to Belgium?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Belgium.

  • What documentation or ID do you need to fly to Belgium?

    The necessary travel and health documents for your Belgium trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Belgium

Compare and see reviews for airlines that fly from State of Washington to Belgium with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $386Free CancellationRating
7.1
571 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom $488Free CancellationRating
7.5
672 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom $502Free CancellationRating
7.4
9,004 reviews
Search United Airlines flights
British AirwaysPriceFrom $503Free CancellationRating
6.7
7,500 reviews
Search British Airways flights
Air FrancePriceFrom $506Free CancellationRating
7.4
1,484 reviews
Search Air France flights
KLMPriceFrom $511Free CancellationRating
7.7
1,405 reviews
Search KLM flights
DeltaPriceFrom $514Free CancellationRating
7.9
8,001 reviews
Search Delta flights
Aer LingusPriceFrom $532Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $556Free CancellationRating
7.1
10,415 reviews
Search Air Canada flights
LufthansaPriceFrom $561Free CancellationRating
6.8
7,558 reviews
Search Lufthansa flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Belgium. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Belgium from Washington which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Washington to Belgium flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Belgium from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Belgium trip

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1 adult
sáb. 12/6
sáb. 12/13
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