$273 Cheap Flights from Seattle (SEA) to Brussels (BRU)

View $273 flight on Sun, Apr 26, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Brussels Airport (BRU)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Seattle to Brussels (SEA-BRU)

Prices were available within the past 7 days and start at $273 for one-way flights and $563 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Thu, Apr 16 - Thu, Apr 23
SEA
Seattle
BRU
Brussels
$563 Roundtrip, found 3 days ago
$563
Roundtrip
found 3 days ago
Select Icelandair flight, departing Thu, Apr 16 from Seattle to Brussels, returning Thu, Apr 23, priced at $563 found 3 days ago
Icelandair
Wed, Nov 11 - Thu, Nov 19
SEA
Seattle
BRU
Brussels
$564 Roundtrip, found 1 day ago
$564
Roundtrip
found 1 day ago
Select Icelandair flight, departing Wed, Nov 11 from Seattle to Brussels, returning Thu, Nov 19, priced at $564 found 1 day ago
Icelandair
Sun, Apr 26 - Wed, May 6
SEA
Seattle
BRU
Brussels
$571 Roundtrip, found 2 days ago
$571
Roundtrip
found 2 days ago
Select Icelandair flight, departing Sun, Apr 26 from Seattle to Brussels, returning Wed, May 6, priced at $571 found 2 days ago
Icelandair
Sat, Apr 18 - Fri, May 1
SEA
Seattle
BRU
Brussels
$572 Roundtrip, just found
$572
Roundtrip
just found
Select Icelandair flight, departing Sat, Apr 18 from Seattle to Brussels, returning Fri, May 1, priced at $572 just found
Icelandair
Thu, Apr 16 - Sun, May 17
SEA
Seattle
BRU
Brussels
$600 Roundtrip, found 6 days ago
$600
Roundtrip
found 6 days ago
Select Icelandair flight, departing Thu, Apr 16 from Seattle to Brussels, returning Sun, May 17, priced at $600 found 6 days ago
Scandinavian Airlines
Tue, Aug 18 - Thu, Sep 10
SEA
Seattle
BRU
Brussels
$616 Roundtrip, found 6 days ago
$616
Roundtrip
found 6 days ago
Select Scandinavian Airlines flight, departing Tue, Aug 18 from Seattle to Brussels, returning Thu, Sep 10, priced at $616 found 6 days ago
Aer Lingus
Wed, Nov 25 - Fri, Dec 4
SEA
Seattle
BRU
Brussels
$660 Roundtrip, found 20 hours ago
$660
Roundtrip
found 20 hours ago
Select Aer Lingus flight, departing Wed, Nov 25 from Seattle to Brussels, returning Fri, Dec 4, priced at $660 found 20 hours ago
Air Canada
Wed, Nov 25 - Fri, Dec 4
SEA
Seattle
BRU
Brussels
$662 Roundtrip, found 20 hours ago
$662
Roundtrip
found 20 hours ago
Select Air Canada flight, departing Wed, Nov 25 from Seattle to Brussels, returning Fri, Dec 4, priced at $662 found 20 hours ago
United
Tue, Apr 28 - Thu, May 7
SEA
Seattle
BRU
Brussels
$670 Roundtrip, found 13 hours ago
$670
Roundtrip
found 13 hours ago
Select United flight, departing Tue, Apr 28 from Seattle to Brussels, returning Thu, May 7, priced at $670 found 13 hours ago
Lufthansa
Wed, Nov 25 - Fri, Dec 4
SEA
Seattle
BRU
Brussels
$676 Roundtrip, found 20 hours ago
$676
Roundtrip
found 20 hours ago
Select Lufthansa flight, departing Wed, Nov 25 from Seattle to Brussels, returning Fri, Dec 4, priced at $676 found 20 hours ago

Alternative airports near Brussels

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Brussels - National BRU. Cheapest and Closest option available. Average driving time to city center is 15 minutes. Flights from $656
BRU
Brussels - National
CheapestClosest
Average driving time to city center15 min
Flights from $656

Find the cheapest month to fly from Seattle (SEA) to Brussels (BRU)

November is typically the cheapest month to fly

From $404 - $1,163 per traveler.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) cost?
You can find cheap one-way flights from $273 and cheap return flights from $563 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) with Expedia. One-way flights usually range from $439 to $3552, and return flights typically cost between $636 and $6687. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National)?
February is the cheapest month to fly from Seattle (SEA) to Brussels (BRU), with average round-trip fares around $621. This price is about 20% lower than the average throughout the year, as winter typically sees less travel. Other economical months to consider are August and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National)?
Enter SEA to BRU and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National)?
The best times to fly from Seattle, WA (SEA) to Brussels (BRU) are February and September. February typically has return flights priced around $621, which is a good deal for international travel. September is also popular, allowing you to experience Brussels in the pleasant early autumn weather.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National)?
The earliest flight from Seattle-Tacoma International (SEA) to Brussels National (BRU) typically departs at 12:05 AM, operated by United. This is a seasonal service, active in November. An early departure can help you maximize your time in Brussels. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National)?
The most popular departure times for flights from Seattle (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) are in the early morning, from 6am to 9am. About 33% of passengers prefer this time window. Many major carriers, including United Airlines, Delta Airlines and Air Canada, offer flights during this window. This timing is favored because it allows you to arrive in Brussels with a full day ahead of you.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National)?
Flights from SEA to BRU with one stop typically take around 17 hours, covering approximately 4,945 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National)?
Business class seats are offered on the SEA to BRU route. Airlines that offer business class service on this route include:

  • Lufthansa
  • Turkish Airlines
  • United Airlines
  • British Airways
  • Air Canada
  • Edelweiss Air
  • Icelandair
  • Finnair
  • Air France
  • Delta Air Lines

First class is available with United Airlines.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Brussels from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly into Brussels - National (BRU) to reach Brussels. Some flights may connect through major hubs like O'Hare Intl. (ORD), Denver Intl. (DEN), Vancouver Intl. (YVR) before reaching Brussels. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) Brussels Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Brussels (BRU-Brussels - National) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Brussels - National
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$562
Distance
4944 mi

Book with confidence

Seattle to Brussels Flights

The cheapest times to fly from Seattle to Brussels

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Brussels are during the month of April. You can find some of the cheapest flights from Seattle to Brussels with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Brussels

Sunday is one of the best days to book for cheap flights from Seattle to Brussels: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Brussels

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Brussels in 2026. You can also book with separate airlines for your outbound and return journeys, from $273 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Brussels flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Brussels airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Brussels Flights

*Flight schedules are subject to change.

Explore a world of travel with Expedia

*Available to One Key members.