Cheap flights from Seattle (SEA) to Brussels from $470

This is the cheapest one-way flight price, found on 9/28. Prices may vary by date and flight preferences.
SEA — BRU
Oct 3 — Oct 101

How to find the cheapest flight from Seattle (SEA) to Brussels

All the information you need to plan the best SEA to BR1 flight in 2023: compare Seattle to Brussels flight prices with the expected peak season, weather and rainfall in Brussels.

Popular in

July

Cheapest in

April

Round-trip from

$660

One-way from

$490
High demand for flights, 28% potential price rise
Best time to find cheap flights, 35% potential price drop
From Seattle/Tacoma Intl to Brussels
One-way flight from Seattle/Tacoma Intl to Brussels

SEA - BRU

Price

$660 - $1,528

BRU

Temperature

37.4 - 62.6 °F

BRU

Rainfall

1.6 - 3.1 inches

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

To save up to 16% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to Brussels from $1,183 1-2 weeks out and tickets from $1,214 for flights departing within the next 72 hours.

What is the cheapest month to fly from Seattle to Brussels?

April can be a great time to fly to Brussels from Seattle with a flight ticket averaging about $946. Cheapflights users have found deals in the month of April for as cheap as $479. The most expensive prices can be found in the month of July.

When is the cheapest time to fly from Seattle to Brussels (SEA - BRU)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Brussels as you normally would.

Cheap Scandinavian Airlines flights from Seattle to Brussels

Check out some of the cheapest Scandinavian Airlines flights we've come across from Seattle to Brussels. It's recommended that users confirm their flight details before booking.

Cheap British Airways flights from Seattle to Brussels

To aid your search, here are some of the cheapest British Airways flights we've found from Seattle to Brussels. Deals are refreshing constantly so come back soon for more options.

Cheap Seattle to Brussels flights in September & October 2023

The best prices found for SEA to Brussels flights for September, October
The lowest fares we've come across on flights traveling from Seattle to Brussels in September and October 2023. If these deals don't appeal to you, be sure to come back soon for more options.

Seattle to Brussels 2023 flight deals

Cheap flights to Brussels from Seattle found for this year
The lowest fares we've come across on flights traveling from Seattle to Brussels in September and October 2023. If these deals don't appeal to you, be sure to come back soon for more options.

Seattle to Brussels flights leaving soon

Late deals on return flights to Brussels from Seattle, departing today and this week
Check out these flights departing soon from Seattle to Brussels. It's wise to confirm all flight details are correct before booking.

One-way flights to Brussels from Seattle

The cheapest one-way flights from Seattle to Brussels
Some of the best available deals we've found on one-way flights from Seattle to Brussels. Users needing a return flight from Seattle to Brussels should utilize the search form above.

Find flights from Seattle to Brussels within your budget

Use the slider to find flights from Seattle to Brussels that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$470 - $827

Route

Depart

Return

Price

Seattle/Tacoma IntlBrussels Bruxelles-National

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/8

1 stop12h 20m

Brussels Bruxelles-National

Fri 11/17

1 stop13h 10m

Seattle/Tacoma IntlBrussels Bruxelles-National

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/8

1 stop12h 20m

Brussels Bruxelles-National

Fri 11/17

1 stop13h 10m

Seattle/Tacoma IntlBrussels Bruxelles-National

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 10/26

2 stops20h 55m

Brussels Bruxelles-National

Thu 11/2

2 stops23h 53m

Seattle/Tacoma IntlBrussels Bruxelles-National

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 3/13

1 stop27h 20m

Brussels Bruxelles-National

Wed 3/27

2 stops19h 19m

Seattle/Tacoma IntlBrussels Bruxelles-National

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 10/26

1 stop14h 20m

Brussels Bruxelles-National

Thu 11/2

1 stop19h 14m

Seattle/Tacoma IntlBrussels Bruxelles-National

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 3/13

1 stop15h 55m

Brussels Bruxelles-National

Wed 3/27

1 stop13h 50m

Seattle/Tacoma IntlBrussels Bruxelles-National

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/8

2 stops18h 39m

Brussels Bruxelles-National

Fri 11/17

1 stop13h 50m

Seattle/Tacoma IntlBrussels Bruxelles-National

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 2/12

2 stops15h 35m

Brussels Bruxelles-National

Fri 2/16

1 stop13h 10m

Seattle/Tacoma IntlBrussels Bruxelles-National

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 10/18

2 stops22h 55m

Brussels Bruxelles-National

Fri 10/27

2 stops23h 40m

Flights are sorted by cheapest first

Deals found on 9/28

Reviews of airlines servicing Brussels

Read reviews from past customers who have flown Scandinavian Airlines, British Airways and United Airlines from Seattle to Brussels. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
3,023 reviews

Crew

8.5

Boarding

8.0

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Delta
7.9
Good
3,023 reviews
Delta
7.9
Good
3,023 reviews

Crew

8.5

Boarding

8.0

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Ethiopian Air
7.5
Good
125 reviews
Delta
7.9
Good
3,023 reviews

Crew

8.5

Boarding

8.0

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

KLM
7.5
Good
196 reviews
Delta
7.9
Good
3,023 reviews

Crew

8.5

Boarding

8.0

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

United Airlines
7.4
Good
1,890 reviews
Delta
7.9
Good
3,023 reviews

Crew

8.5

Boarding

8.0

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

American Airlines
7.2
Good
2,635 reviews
Delta
7.9
Good
3,023 reviews

Crew

8.5

Boarding

8.0

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Related info for your journey

Useful info, stats and facts about Seattle to Brussels flights.

What airport do you fly from for flights from Seattle to Brussels?

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Brussels. On average, Seattle/Tacoma Intl has 0 outbound flights to Brussels per day from 11 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

Can I find flights from Seattle to Brussels for under $500 on Cheapflights?

Yes, there are multiple flights from Seattle to Brussels for under $500. The cheapest flight booked recently is on Icelandair for just $470, but on average you can expect to pay $654.

Are there last-minute flights available from Seattle to Brussels for under $900?

There are currently 14+ open flights from Seattle to Brussels within the next 7 days for less than $900.

What are the cheapest airlines flying from Seattle to Brussels round-trip?

Icelandair, at $470, was found to be the cheapest airline from Seattle to Brussels.Alternate airlines to your destination round-trip include Iberia and Delta. Users have found that Icelandair is 50% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Seattle to Brussels one-way?

The cheapest airline one-way is KLM, with whom users have recently found tickets for as low as $490. However, be on the lookout for offers from Aer Lingus and American Airlines, as they are both options that can get you from Seattle to Brussels for a low price.

What are the most popular airlines that fly from Seattle to Brussels?

What does SEA to BRU mean?

SEA stands for Seattle/Tacoma Intl Airport, while BRU stands for Brussels Bruxelles-National Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Charleroi Brussels Airport (CRL), Antwerp Deurne Airport (ANR), Ostende-Bruges Airport (OST), Liège Bierset Airport (LGG) are some additional IATA codes for airports related to your trip.

Other flights from Seattle

Top 10 airlines flying from Seattle to Brussels

The chart below displays the airlines Cheapflights users traveling from Seattle to Brussels choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$517Average$910FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapest$528Average$1,684FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest$589Average$1,067FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest$642Average$989FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest$668Average$1,058FlexibilityNo cancel feeOn-time75%
Search KLM flights
DeltaCheapest$669Average$885FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest$684Average$1,097FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest$684Average$1,114FlexibilityNo cancel feeOn-time77%
Search Air France flights
American AirlinesCheapest$758Average$1,065FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
CondorCheapest$812Average$1,267FlexibilityNo cancel feeOn-time76%
Search Condor flights

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