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Cheap flights from Washington to Belgium from $289

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 10/15. 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 Washington to Belgium

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
2:35 pm - 11:55 am
SEA
-
BRU
12h 20m
1 stop
Icelandair Logo
12:50 pm - 5:00 pm
BRU
-
SEA
13h 10m
1 stop
$614Icelandair
Wed, Nov 4 - Tue, Nov 17
Icelandair Logo
2:35 pm - 11:55 am
SEA
-
BRU
12h 20m
1 stop
Icelandair Logo
12:50 pm - 5:00 pm
BRU
-
SEA
13h 10m
1 stop
$615Icelandair
Wed, Nov 4 - Thu, Nov 19
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
Icelandair Logo
12:50 pm - 6:00 pm
BRU
-
SEA
13h 10m
1 stop
$642Icelandair
Sun, Oct 18 - Thu, Oct 29
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
Icelandair Logo
12:50 pm - 6:00 pm
BRU
-
SEA
13h 10m
1 stop
$648Icelandair
Sun, Oct 18 - Thu, Oct 29
Air Canada Logo
10:05 am - 8:55 am
PDX
-
BRU
37h 50m
2 stops
Air Canada Logo
10:00 am - 9:25 am
BRU
-
PDX
32h 25m
2 stops
$758Air Canada
Sun, Nov 1 - Tue, Nov 10
Air Canada Logo
7:10 pm - 8:00 pm
PDX
-
BRU
39h 50m
2 stops
Air Canada Logo
10:00 am - 6:30 pm
BRU
-
PDX
41h 30m
2 stops
$759Air Canada
Sun, Nov 1 - Thu, Nov 5
Multiple Airlines Logo
10:05 am - 1:35 pm
PDX
-
BRU
18h 30m
2 stops
Multiple Airlines Logo
7:00 am - 6:30 pm
BRU
-
PDX
20h 30m
2 stops
$768Multiple Airlines
Sun, Nov 1 - Tue, Nov 3
United Airlines Logo
12:40 pm - 1:15 pm
PDX
-
BRU
15h 35m
2 stops
United Airlines Logo
11:15 am - 9:21 pm
BRU
-
PDX
19h 06m
1 stop
$770United Airlines
Sun, Nov 1 - Thu, Nov 5
British Airways Logo
5:45 pm - 4:40 pm
PDX
-
BRU
13h 55m
1 stop
British Airways Logo
9:45 pm - 3:55 pm
BRU
-
PDX
27h 10m
1 stop
$771British Airways
Sun, Nov 1 - Tue, Nov 3
Multiple Airlines Logo
11:40 am - 10:55 am
PDX
-
BRU
14h 15m
1 stop
Multiple Airlines Logo
10:45 am - 11:25 am
BRU
-
PDX
33h 40m
1 stop
$772Multiple Airlines
Sun, Nov 1 - Tue, Nov 10

United Airlines flights from State of Washington to Belgium

Our best United Airlines deals on State of Washington to Belgium flight tickets
United Airlines
Nov 4
SEA5:00 amSeattle/Tacoma Intl
23h 15m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Nov 8
BRU10:00 amBrussels Bruxelles-National
43h 10m
2 stops
SEA8:10 pmSeattle/Tacoma Intl
$711
United Airlines
Nov 3
SEA9:02 amSeattle/Tacoma Intl
19h 13m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Nov 19
BRU7:00 amBrussels Bruxelles-National
14h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$722
United Airlines
Nov 3
SEA11:00 amSeattle/Tacoma Intl
12h 55m
1 stop
BRU8:55 amBrussels Bruxelles-National
Nov 18
BRU7:00 amBrussels Bruxelles-National
14h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$725

Lufthansa flights from State of Washington to Belgium

Our best Lufthansa deals on State of Washington to Belgium flight tickets
Lufthansa
Nov 3
SEA3:05 pmSeattle/Tacoma Intl
31h 45m
2 stops
BRU7:50 amBrussels Bruxelles-National
Nov 16
BRU7:30 pmBrussels Bruxelles-National
25h 40m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$754
Lufthansa
Sep 1
SEA7:20 pmSeattle/Tacoma Intl
26h 50m
2 stops
BRU7:10 amBrussels Bruxelles-National
Sep 9
BRU9:25 amBrussels Bruxelles-National
22h 17m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$767
Lufthansa
Sep 1
SEA7:20 pmSeattle/Tacoma Intl
26h 50m
2 stops
BRU7:10 amBrussels Bruxelles-National
Sep 9
BRU9:25 amBrussels Bruxelles-National
22h 17m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$768

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 May 8, 2026.
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

Cheapest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/4

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Tue 11/17

12:50 pm-5:00 pm

1 stop13h 10m

$614

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/4

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Thu 11/19

12:50 pm-5:00 pm

1 stop13h 10m

$615
Quickest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 10/18

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Thu 10/29

12:50 pm-6:00 pm

1 stop13h 10m

$642

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 10/18

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Thu 10/29

12:50 pm-6:00 pm

1 stop13h 10m

$648

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/1

10:05 am-8:55 am

2 stops37h 50m

Brussels Bruxelles-National

Tue 11/10

10:00 am-9:25 am

2 stops32h 25m

$758

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/1

7:10 pm-8:00 pm

2 stops39h 50m

Brussels Bruxelles-National

Thu 11/5

10:00 am-6:30 pm

2 stops41h 30m

$759

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/1

10:05 am-1:35 pm

2 stops18h 30m

Brussels Bruxelles-National

Tue 11/3

7:00 am-6:30 pm

2 stops20h 30m

$768

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/1

12:40 pm-1:15 pm

2 stops15h 35m

Brussels Bruxelles-National

Thu 11/5

11:15 am-9:21 pm

1 stop19h 06m

$770

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/1

5:45 pm-4:40 pm

1 stop13h 55m

Brussels Bruxelles-National

Tue 11/3

9:45 pm-3:55 pm

1 stop27h 10m

$771

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/1

11:40 am-10:55 am

1 stop14h 15m

Brussels Bruxelles-National

Tue 11/10

10:45 am-11:25 am

1 stop33h 40m

$772

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, August 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 $219. If you are unable to visit Belgium during the month of August, then departing from State of Washington during the month January is also very affordable. Most momondo users find prices during this month for around $375.

How far in advance should I book a flight from Washington 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 $615 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 $503 on momondo.

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

You could potentially save up to 15% 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

Fastest flight time

11h 35m

Direct flights

None
The fastest flight from State of Washington to Belgium takes 11h 35m
There are no direct flights from State of Washington to Belgium. There are no popular flight routes from State of Washington to Belgium.
Search flight deals

Frequently asked questions about flying from Washington to Belgium

  • 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 $383Free CancellationRating
7.0
653 reviews
Search Icelandair flights
British AirwaysPriceFrom $421Free CancellationRating
6.7
7,952 reviews
Search British Airways flights
United AirlinesPriceFrom $470Free CancellationRating
7.4
9,694 reviews
Search United Airlines flights
KLMPriceFrom $481Free CancellationRating
7.8
1,511 reviews
Search KLM flights
DeltaPriceFrom $482Free CancellationRating
7.9
8,456 reviews
Search Delta flights
Air CanadaPriceFrom $485Free CancellationRating
7.1
11,002 reviews
Search Air Canada flights
Virgin AtlanticPriceFrom $488Free CancellationRating
7.4
688 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom $494Free CancellationRating
6.8
7,980 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.

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