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SEA - BRU

Find cheap flights from Seattle to Brussels Airport from $446

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Brussels departing on 7/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
jeu. 5/16
jeu. 5/23

Search hundreds of travel sites at once for deals on flights to Brussels Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Brussels.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Brussels.
In the last 7 days travelers have searched 43,990,755 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to Brussels (SEA-BRU)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Brussels that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:50 pm - 12:50 pmSEA-BRU
12h 00m1 stop
1:50 pm - 5:40 pmBRU-SEA
12h 50m1 stop
$508Icelandair
Find Deal
ven., mai 3 - jeu., mai 16
3:50 pm - 12:50 pmSEA-BRU
12h 00m1 stop
1:50 pm - 8:35 pmBRU-SEA
15h 45m1 stop
$523Icelandair
Find Deal
mer., mai 1 - lun., mai 13
3:20 pm - 6:15 amSEA-BRU
53h 55m2 stops
8:35 am - 12:27 pmBRU-SEA
36h 52m2 stops
$579Lufthansa
Find Deal
dim., avr. 21 - mar., avr. 30
7:20 am - 8:45 amSEA-BRU
16h 25m1 stop
3:05 pm - 10:10 amBRU-SEA
28h 05m1 stop
$589Delta
Find Deal
mer., mai 1 - lun., mai 6
11:05 pm - 8:45 amSEA-BRU
24h 40m1 stop
6:10 am - 10:15 amBRU-SEA
13h 05m1 stop
$590Delta
Find Deal
dim., avr. 21 - mar., avr. 30
3:20 pm - 6:15 amSEA-BRU
53h 55m2 stops
8:45 pm - 10:42 pmBRU-SEA
34h 57m2 stops
$595Lufthansa
Find Deal
dim., avr. 21 - mar., avr. 30
8:06 am - 7:15 amSEA-BRU
14h 09m1 stop
10:00 am - 1:19 pmBRU-SEA
36h 19m2 stops
$598United Airlines
Find Deal
mer., mai 1 - lun., mai 13
5:00 am - 9:00 amSEA-BRU
19h 00m2 stops
10:00 am - 1:19 pmBRU-SEA
36h 19m2 stops
$603United Airlines
Find Deal
mer., mai 1 - lun., mai 13
1:30 pm - 2:05 pmSEA-BRU
15h 35m1 stop
8:00 pm - 11:35 amBRU-SEA
24h 35m1 stop
$622British Airways
Find Deal
jeu., mai 2 - lun., mai 13
1:30 pm - 2:05 pmSEA-BRU
15h 35m1 stop
8:00 pm - 7:21 pmBRU-SEA
32h 21m2 stops
$660British Airways
Find Deal
jeu., mai 2 - lun., mai 13

Flights from Seattle to Brussels - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Brussels to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Brussels Airport?

The average price of all flights from Seattle to Brussels Bruxelles-National Airport clicked on KAYAK for each day over the last 12 months.
When flying from Seattle to Brussels Airport, you should consider leaving on a Sunday and avoid Thursdays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Seattle to Brussels Bruxelles-National Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Brussels Bruxelles-National Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Brussels Bruxelles-National Airport is November, where tickets cost $684 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,606 and $1,247 respectively.

How far in advance should I book a flight from Seattle to Brussels Bruxelles-National Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Brussels Bruxelles-National Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Brussels Bruxelles-National Airport, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 82 days before departure.

Which airlines provide the cheapest flights from Seattle to Brussels Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Icelandair ($446) and Air Canada ($485). The cheapest round-trip tickets were found on Icelandair ($508) and Air Canada ($559).

Good to know

Low season

January

High season

July

Cheapest flight

$446
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 24% increase in price.
Flight from Seattle to Brussels Airport

When to book flights from Seattle to Brussels

Are your dates flexible? Find out the best times to travel from Seattle to Brussels based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Brussels Airport flights

  • Traveling with your child can be convenient if you consider flying with Condor from SEA to BRU. They offer family-friendly services, including special family check-in counters, pre-boarding for those with young children, changing facilities, and in-flight entertainment with child-friendly content.

    What are the transport options from Brussels Airport to downtown?

  • You can connect from BRU Airport to Brussels North in downtown Brussels using the Ic train of Belgian Railways servicing NMBS and SNCB Lines with an interval of 10 minutes. STIB bus links BRU Airport with Schuman in downtown Brussels and operates at a 20-mins interval. De Lijn bus connects BRU Airport to downtown Brussels and operates after every 30 minutes. FlixBus bus runs six times weekly and connects BRU Airport to downtown Brussels.

    What are some layover airports for flights from Seattle to Brussels?

  • All flights have layovers on the SEA to BRU route. Some of the stopover airports include Frankfurt (FR) by Condor and Lufthansa, Keflavik (KEF) by Iceland, Dublin (DUB) by Aer Lingus, and London (LHR) by Finnair, Iberia, American, and British.

    Which lounges can I access at Seattle Airport?

  • SEA Airport has lounges where you can relax while waiting for your BRU flight. Some of the lounges offer exclusive access to their Business- and First-class passengers free of charge. They include Centurion Lounge on Concourse B at the Airside, Delta Sky Club Lounge on Concourse A at the Airside, and Alaska Lounge with three locations on Concourse D, Concourse C, and North Satellite at the Airside.

    What is the carry-on policy for flights from Seattle to Brussels?

  • What is the cheapest flight from Seattle to Brussels Bruxelles-National Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Brussels Bruxelles-National Airport was $446 for a one-way ticket and $508 for a round-trip.

  • Do I need a passport to fly between Seattle and Brussels Airport?

    Yes, you’ll need a passport to travel to Brussels Airport from Seattle.

  • Which aircraft models fly most regularly from Seattle to Brussels Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Brussels Airport?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Seattle and Brussels Airport, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Brussels, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Seattle to Brussels are Delta and KLM. With an average price for the route of $1,086 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $822 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Seattle to Brussels Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Brussels Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Brussels Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels Airport from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Brussels Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Brussels Airport with an airline and back to Seattle with another airline. Booking your flights between Seattle and BRU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Brussels Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Brussels Airport from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from SEA to Brussels Airport

  • Yes. Airlines flying from Miami to Vilnius assist passengers with special needs. Each airline operating on this route runs a wheelchair assistance program to help passengers with limited mobility get through the airport. Airlines like United Airlines, Lufthansa, and Turkish Airlines offer airport attendants who assist travelers with reduced mobility with their luggage from check-in areas to baggage claim on arrival.
  • Consider flying with Tap Air Portugal from Seattle–Tacoma Airport - Seatac (SEA) to Brussels Airport - Zaventem (BRU) to enjoy personalized meals that match your dietary needs. They include age-appropriate meals for children, Gluten-free meals for their gluten-intolerant passengers, and vegan, diabetic, and vegetarian meals specified for these passengers.
  • Condor and Tap Air Portugal allow minors aged 5 to 11 to travel unaccompanied from SEA to BRU. Their travel is only restricted to domestic flights. Both airlines have ground personnel who can help them through check-in. An assigned in-flight crew supervises the unaccompanied minors throughout their flight for enhanced safety and comfort.
  • SWISS offers extensive accessible services to special needs passengers traveling from SEA to BRU. The airline offer wheelchair assistance to passengers with reduced mobility. Their low-vision and hard-to-hear passengers have access to other forms of communication, such as braille, audio descriptions, and written or visual announcements.
  • Since the journey from SEA to BRU is long, consider flying Business- or First-class with Scandinavian Airlines for enhanced comfort. They offer these passengers special services and amenities, including fine dining options, spacious seats, and increased allowed size of carry-on bags.
See more tips

Top 5 airlines serving from Seattle to Brussels

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Brussels. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Brussels? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 11360 reviews
7.7boarding
7.2comfort
8.1crew
7.1entertainment
6.7food
Airline reviews

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

2.0 MediocreAnonymous, Apr 2024EWR - MCO
Read more about United Airlines reviews

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

the flight from Tampa departed with a delay. The food on board was poor, usually on international airlines alcoholic beverages are offered free of charge , but here it was for a fee, the cutlery was wooden, there were no hot drinks (tea, coffee). Unfortunately, I didn't take pictures of the portions of food, but it wouldn't have been enough for a child either.And in the future, I will try not to use the services of this airline

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

I liked everything about the flight. The service was excellent!

The customer service was excellent! Check-in, baggage check-in, boarding, the flight went very smooth.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

Aer Lingus doesn't have plug ins for devices at each seat. They also did not give me a dairy free meal as requested and confirmed by staff. It was as if I had not requested anything. Otherwise, they were great!

The transatlantic flight was wonderful. The regional reminded me of jet blue. Crazy and packed. Not enough overhead space and tough on elderly.

All OK. Food, best bring your own. Even a BigMac will be better.

Always find Aer Lingus reliable and good value for money. Food on this flight was pretty basic and the headphone Jack at my seat only worked for one ear. Little disappointed in movie selection, limited on recent releases. Staff are okay - but I always buy a cheap ticket so not like I expect first class opulence anyway!!!

Great hospitality and service! Seats are better cushioned then some

The vegan meal was pretty horrible tasting and the staff did not bring me breakfast and no coffee and asked. the connecting flight from dublin to bristol was much delayed.

Pretty darn good. Food was typical airline food. Not anyone’s favorite.

Nice easy flight. Crew was very nice and of all the times I have bought a seat for my guitar - this was the easiest. They were prepared and no problems at all.

I will never fly this airline again. Checking in was poor , we had to go back to the check in counter at Raleigh - Durham international airport three times because they didn’t issue my boarding pass but rather duplicated my husband’s twice which caused a big headache at the passport control at the airport which triggered security alert and wouldn’t let us pass through we we had to wait for long time to be able to explain and clear everything after talking to the supervisor.. No food on the plane , not even crackers. No food was offered to buy ether . No ear phone was provided . Very little time to make from one plane to another and nobody to assist with smooth transition. Flight itself , we felt safe so thank you to the pilots . But customer service was terrible . We spent $ 2500 on 2 tickets, so I cannot say that service was consistent with the price .

Seats are way too much now with these new airplanes especially long flights like we had. I was 7 month pregnant and in a lot of discomfort due to small seats.

Food was horrible. This wasn’t business class. No leg space, can’t sleep in row position, huge delay

I liked how easy my transfers between flights in Keflavik were. I would have appreciated more food options in Keflavik.

The plane was flaming hot! Could not breathe. Everyone coughing from heat. Awful.

My biggest problem was the flight from KEF to DUB was delayed, which caused me to miss my connecting flight in DUB and we were forced into an unplanned 10-hour layover in DUB. Crew and boarding staff were all very friendly but this was a real inconvenience and especially uncomfortable for my disabled wife.

Not much! This was my first flight with Iceland air and unfortunately it wasn’t what I have expected. My luggage is lost nothing as of yet where it was left. Not a good service at all!!

The seat size was more like a domestic than an international flight. In fact, i would compare the ammenities, quality and service to a short hall ryan air flight, which was unexpected for an international flight. The plane was extremely hot so sleeping was difficult. My biggest complaint was that they are very strict on carry on luggage only allowing it to weigh 10kg/22lb. I try to limit myself to a carryon so i don't have to mess with bagage claim, but the wieght restriction made it impossible. I have never had a carry on weight restriction (at least enforced) on an international flight. Will not be including them in future searches.

Pros: "I liked the northern lights look after boarding upon introduction of the captain and crew members. Everyone was super personal and uninformed looked great. The best part was when they started boarding from the last row, which is the most logical and efficient way to do it"
Pros: "Got assisted to the plane by airport staff as I was in a wheelchair"
Cons: "Food on board was awful. Ordered hamburger but not availabe having already pre paid. Pizza was poor quality and had no taste. Range of food disappointing"

I dropped my wallet under my seat on this flight with all of my money and credit card. I requested to be able to go back and retrieve it but Lufthansa denied my request. I went to the Customer Services and they called Lost and Found but I was told nothing found would be turned in until around 12:00pm. My next flight was leaving so I was unable to check to see if my wallet was turned in. I will never fly with Lufthansa again.

My concern is with Flight: 441 IAH-FRA I was very cramped in my seat and the person in front of me was reclined. I pulled my wallet out of my purse and when finished I did my best to cram it back into my purse. Our flight was very delayed and we were rebooked twice and lots of airport time. As I got off the flight I noticed that I had dropped my wallet( containing all my credit & debit bank cards + 240 US dollars & 240 Euros. I spoke to customer service & Lost &Found. I was denied access to look on the plane. Therefore I have been without money and given no help. Paula Bjork 503.545.6698

Dinner was good by air travel standards but breakfast was too light and heavy on carbs/sugar.

Used to love Lufthansa, but Rowe are too close together in Economy and passengers are allowed to recline their seats so far back it is impossible for those behind them to even reach for carry-on essentials during flight - except for meal service when flight attendants ask for seat backs to be raised, we can’t sleep on planes so this flight was most uncomfortable ever! Rod Rose

So far so good. I missed my flight because of the Lufthansa diversion. United helped me to figure out how to get accommodations from Lufthansa for my long layover. They help me book appropriate onward flight.

Horrible crowding on the seats, headphones provided did not fit or work in the entertainment center, seriously the most uncomfortable flight I have taken in a LONG time. The people in front of me were literally 5 inches from my face the entire flight. Did they change their seats recently? I remember it being tight but wow this was a whole new level. Also I am a 5'3" small woman so I can't even imagine a larger person dealing with that for 11 hrs.

Seat controls of lights were broken, and only 1 of the 2 seat TVs ever worked on the long flight. On the short flight there were no USB connections, on the long one they were difficult to access. Part of my meal was frozen, though the hot portion was good.

Lufthansa fails at mentioning no luggage when booking through points. We had to pay added fees to take checked bags to Europe for 2 weeks. The staff at check in were not helpful at all. told us "if we don't like it, then book another flight". Food was bad, they ran out of half the options. Vegetarian was terrible. The flight crew was nice, and tried to make it work ok.

Always a pleasure to deal with United's helpful and knowledgeable staff

Always a pleasure to deal with United's helpful and knowledgeable saff

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Not sure if the crew were experiencing something unknown to me,but the service of passing water was non-existent.In addition,please take consideration when providing yogurt as alternative for breakfast as some of us, could be lactose intolerant.. thanks

Very cramped seats in economy, difficult to get comfortable with your legs and feet and back. The seat width is ok but I’m average size. Food is HORRIBLE. Crew is friendly. Delays and very tight connections made it tough for navigating. We would have missed our connecting flight if it wasn’t delayed too. The terminal transit was slow and normally every 10 minutes before 8pm, after 8 pm is every 30 minutes!!!!! No free wine or drinks!! Below average attitude.

Leg room was better than expected. Lavatory’s were easy to access.crew was grea!

Horrible seat allocation. Boarding was slow. Food was average and so was entertainment. The TV terminal didn't work and so had to use remote.

Lost one checked bag.and wasted 30min waiting and filing missing baggage report. Very unsatisfied.

I’m not happy because I discovered there is something wrong and my miles have not been getting put on my AA account. So this needs to be fixed because I have traveled a lot since October and none of my miles are registered

This was an American Airlines flight. The crew were very unhappy and quite grumpy. Abrupt to the point of being rude. The food was dreadful. Indeed the breakfast was in edible. I will avoid AA at all costs in the future.

As expected for a BA long haul flight in economy - you get what you pay for. Good leg space, in flight entertainment and food and drink provided. Staff on the return flight (overnight) we're a bit brisk and just wanted to get everyone fed and watered before turning the lights down. We're vegetarian so ordered it separately through the booking, although when we were in flight we realised there was a normal and vegetarian option anyway, and we were given vegan. This is fine, however on the return trip we were told there were no more specially ordered meals left, so be aware in case you have specific dietary requirements.

Fare was much lower with a layover in London as I was able avoid numerous landing fees that would have been added to the ticket price had I booked a direct flight to Amsterdam.

Book cheap flights from Seattle to Brussels

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Brussels found on KAYAK in the last 72 hours.
7/3mer.
1 stopIcelandair
12h 00mSEA-BRU
$446
7/4jeu.
1 stopIcelandair
12h 00mSEA-BRU
$447
7/1lun.
1 stopIcelandair
28h 50mSEA-BRU
$449
4/19ven.
1 stopLufthansa
17h 00mSEA-BRU
$594
5/19dim.
1 stopBritish Airways
14h 35mSEA-BRU
$698
5/15mer.
2 stopsUnited Airlines
17h 22mSEA-BRU
$700
5/18sam.
1 stopUnited Airlines
24h 15mSEA-BRU
$706
7/2mar.
2 stopsBritish Airways
18h 46mSEA-BRU
$708
7/3mer.
2 stopsLufthansa
15h 40mSEA-BRU
$724
6/29sam.
2 stopsDelta
24h 15mSEA-BRU
$1,362

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Last minute flights from Seattle to Brussels

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Brussels that are departing in the next 10 days.
4/21dim.
multi-stopLufthansa
53h 55mSEA-BRU
4/30mar.
multi-stopLufthansa
36h 52mBRU-SEA
$579
4/21dim.
multi-stopDelta
24h 40mSEA-BRU
4/30mar.
multi-stopDelta
28h 10mBRU-SEA
$590
4/21dim.
multi-stopLufthansa
53h 55mSEA-BRU
4/30mar.
multi-stopLufthansa
34h 57mBRU-SEA
$595
4/21dim.
multi-stopDelta
24h 40mSEA-BRU
4/30mar.
multi-stopDelta
17h 02mBRU-SEA
$600
4/18jeu.
multi-stopUnited Airlines
14h 44mSEA-BRU
4/25jeu.
multi-stopUnited Airlines
17h 18mBRU-SEA
$620
4/18jeu.
multi-stopBritish Airways
18h 17mSEA-BRU
4/25jeu.
multi-stopBritish Airways
21h 44mBRU-SEA
$636
4/20sam.
multi-stopUnited Airlines
20h 05mSEA-BRU
4/26ven.
multi-stopUnited Airlines
38h 58mBRU-SEA
$737
4/20sam.
multi-stopBritish Airways
35h 18mSEA-BRU
4/26ven.
multi-stopBritish Airways
34h 52mBRU-SEA
$752
4/20sam.
multi-stop
14h 25mSEA-BRU
4/26ven.
multi-stop
16h 50mBRU-SEA
$1,198
4/19ven.
multi-stopAmerican Airlines
33h 21mSEA-BRU
4/26ven.
multi-stopAmerican Airlines
42h 22mBRU-SEA
$2,131

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Search by airline

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Seattle - Brussels Airport Flights

Departure:

Seattle (SEA)United States

Destination:

Brussels Airport (BRU)Belgium

Return flight deals:

Brussels Airport - Seattle

Cabin classes: