Cheap flights from Seattle to Brussels from $313
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Brussels departing on 10/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Use the filters below to find and compare flights from Seattle to Brussels Bruxelles-National Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 11/9
2:35 pm-11:55 am
1 stop12h 20m
Brussels Bruxelles-National
Sun 11/22
12:50 pm-5:00 pm
1 stop13h 10m
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 11/9
2:35 pm-6:40 pm
2 stops19h 05m
Brussels Bruxelles-National
Tue 11/24
6:15 am-5:00 pm
3 stops19h 45m
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 11/2
2:35 pm-11:55 am
1 stop12h 20m
Brussels Bruxelles-National
Thu 11/12
12:50 pm-5:00 pm
1 stop13h 10m
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Wed 3/10
7:15 am-7:35 am
2 stops15h 20m
Brussels Bruxelles-National
Wed 3/17
6:15 am-12:35 pm
1 stop14h 20m
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 11/9
2:35 pm-7:50 pm
3 stops20h 15m
Brussels Bruxelles-National
Tue 11/24
6:15 am-5:00 pm
3 stops19h 45m
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 1/11
6:45 pm-4:40 pm
1 stop12h 55m
Brussels Bruxelles-National
Mon 1/25
5:35 pm-4:50 pm
1 stop32h 15m
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 1/11
8:30 am-1:15 pm
3 stops19h 45m
Brussels Bruxelles-National
Mon 1/25
1:45 pm-9:59 pm
2 stops41h 14m
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Wed 11/4
2:50 pm-1:10 pm
1 stop13h 20m
Brussels Bruxelles-National
Wed 11/11
7:00 am-12:00 pm
1 stop14h 00m
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 4/5
1:35 pm-2:25 pm
1 stop15h 50m
Brussels Bruxelles-National
Mon 4/12
8:50 pm-11:35 am
1 stop23h 45m
SeattleBrussels
SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National
SEABRU
Seattle/Tacoma Intl
Mon 11/9
8:30 am-1:15 pm
2 stops19h 45m
Brussels Bruxelles-National
Tue 11/24
11:55 am-8:56 pm
1 stop18h 01m
See travel insights to Brussels from
How to get the cheapest flight ticket from Seattle to Brussels Bruxelles-National Airport
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 typical price of a round-trip flight between Seattle and Brussels Bruxelles-National Airport?
Prices are currently typical for flights on this route.
Typical prices usually range from $556 to $789.The lowest price recently found on this route was $662.
What is the cheapest month to fly to Brussels Bruxelles-National Airport?
The cheapest month to fly to Brussels Bruxelles-National Airport from Seattle is in February. Flight prices, which tend to average around $510, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Brussels Bruxelles-National Airport from Seattle during January instead. Flights to Brussels Bruxelles-National Airport in January, while not as cheap as those in February, still average around $510.
How far in advance should I book a flight from Seattle to Brussels Bruxelles-National Airport?
You are more likely to see cheaper flights to Brussels Bruxelles-National Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport for around $760 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels Bruxelles-National Airport from Seattle for as low as $568 on momondo.
Can stopping save me money on Seattle to Brussels Bruxelles-National Airport flights?
You could potentially save up to 34% on your flight if you consider stops on a Seattle to Brussels Bruxelles-National Airport flight.
How have Seattle to Brussels Bruxelles-National Airport flight prices changed over time?
As of October 2026, prices for Seattle to Brussels Bruxelles-National Airport flights are approximately 44% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Brussels Bruxelles-National?
Icelandair is the most popular carrier operating from Seattle/Tacoma Intl to Brussels Bruxelles-National
What airlines fly to Brussels Bruxelles-National Airport?
Lufthansa, Icelandair and United Airlines are the top three most popular airlines that fly to Brussels Bruxelles-National Airport from Seattle according to our data. Lufthansa is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Brussels Bruxelles-National Airport. Keep in mind that there are 6 different airlines that fly to Brussels Bruxelles-National Airport on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Seattle and Brussels Bruxelles-National Airport?
Munich (MUC) was the most common stop: 28% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Seattle to Brussels Bruxelles-National Airport?
Flights via London (LHR) offer the lowest average round-trip price of $473.
Which layover airport has the shortest travel time from Seattle to Brussels Bruxelles-National Airport?
Flights connecting via Munich (MUC) have the shortest average one-way travel time: 12h 25m.
Which layover airport has the shortest connection time from Seattle to Brussels Bruxelles-National Airport?
Munich (MUC) has the shortest average layover time for this route: 1h 22m.
When to book flights from Seattle to Brussels Bruxelles-National Airport
Cheap Seattle to Brussels Bruxelles-National Airport (SEA to BRU) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Brussels Bruxelles-National Airport
Frequently asked questions about flying from Seattle to Brussels Bruxelles-National Airport
How far is Seattle/Tacoma Intl to Brussels Bruxelles-National by plane?
The straight-line distance from Seattle/Tacoma Intl to Brussels Bruxelles-National is 4932.2 mi. Typically, this will take 12h 15m by plane in normal conditions.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Brussels Bruxelles-National Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Brussels Bruxelles-National Airport refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Brussels Bruxelles-National Airport?
As of October 2026, there are 6 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Brussels Bruxelles-National Airport.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Brussels Bruxelles-National Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Brussels Bruxelles-National Airport.
What documentation or ID do you need to fly to Brussels Bruxelles-National Airport?
The travel and health documents required for your trip to Brussels Bruxelles-National Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Brussels Bruxelles-National Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Seattle to Brussels Bruxelles-National Airport?
Based on momondo bookings for flights between Seattle and Brussels Bruxelles-National Airport, the leading airline is Lufthansa, making up 35% of the total bookings. Other popular airlines include Icelandair with 29%, United Airlines with 11%, and Delta with 10%.
Best airlines flying from Seattle to Brussels Bruxelles-National Airport
Compare and see reviews for airlines that fly from Seattle to Brussels Bruxelles-National Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $381 | Free Cancellation | Rating 6.9 758 reviews | |||
| PriceFrom $421 | Free Cancellation | Rating 6.7 8,255 reviews | |||
| PriceFrom $481 | Free Cancellation | Rating 7.8 1,580 reviews | |||
| PriceFrom $496 | Free Cancellation | Rating 6.8 8,269 reviews | |||
| PriceFrom $509 | Free Cancellation | Rating 7.8 8,651 reviews | |||
| PriceFrom $522 | Free Cancellation | Rating 7.4 10,331 reviews |
Traveling to a place near Brussels?
Book flights to Brussels if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Seattle to Brussels?
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Can I find flights from Seattle to Brussels with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Brussels from Seattle with this policy.
How can momondo help me find flights from Seattle to Brussels?
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 Seattle to Brussels.
I’m not ready to book a flight from Seattle to Brussels right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Seattle to Brussels flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.