BRU - SEA

$388 Find Cheap Flights from Brussels to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Brussels to Seattle departing on 5/6. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Brussels to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Brussels to Seattle.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$695
Typical prices: $874-$623
Aer Lingus
Sat 6/13Tue 6/16
BRU - SEA • 1 stop
Cheapest one-way
$388
Typical prices: $519-$674
Multiple Airlines
Wed 5/6
BRU - SEA • 3 stops
Top airlines
Cheapest • from $695 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Brussels and Seattle. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $645 (round-trip)
Shortest trip • 12h 26m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 26% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Brussels to Seattle (BRU-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Brussels to Seattle 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Brussels to Seattle

Sat, Jun 13 - Tue, Jun 16
Aer Lingus Logo
10:20 am - 5:10 pm
BRU
-
SEA
15h 50m
1 stop
Aer Lingus Logo
7:10 pm - 8:45 pm
SEA
-
BRU
16h 35m
1 stop
$695Aer Lingus
Sun, May 17 - Tue, Jun 2
Aer Lingus Logo
10:20 am - 5:10 pm
BRU
-
SEA
15h 50m
1 stop
Aer Lingus Logo
7:10 pm - 8:45 pm
SEA
-
BRU
16h 35m
1 stop
$719Aer Lingus
Fri, May 29 - Fri, Jun 12
Scandinavian Airlines Logo
3:15 pm - 1:45 pm
BRU
-
SEA
31h 30m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$725Scandinavian Airlines
Thu, Aug 27 - Sat, Sep 5
Scandinavian Airlines Logo
8:30 pm - 1:45 pm
BRU
-
SEA
26h 15m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$727Scandinavian Airlines
Fri, May 29 - Fri, Jun 12
Scandinavian Airlines Logo
3:15 pm - 1:45 pm
BRU
-
SEA
31h 30m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$728Scandinavian Airlines
Fri, May 29 - Fri, Jun 12
Scandinavian Airlines Logo
9:10 pm - 1:45 pm
BRU
-
SEA
25h 35m
2 stops
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$755Scandinavian Airlines
Sat, Sep 12 - Sat, Sep 19
Scandinavian Airlines Logo
3:15 pm - 1:45 pm
BRU
-
SEA
31h 30m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$756Scandinavian Airlines
Sat, Sep 12 - Sat, Sep 19
Scandinavian Airlines Logo
3:15 pm - 1:45 pm
BRU
-
SEA
31h 30m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$757Scandinavian Airlines
Sat, Sep 12 - Sat, Sep 19
Scandinavian Airlines Logo
3:15 pm - 1:45 pm
BRU
-
SEA
31h 30m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$760Scandinavian Airlines
Sun, May 17 - Sun, May 31
Icelandair Logo
1:50 pm - 8:40 pm
BRU
-
SEA
15h 50m
1 stop
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
$773Icelandair
Booking Insights

KAYAK's insights & trends for Brussels to Seattle flights

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

How much is a round-trip flight from Brussels Bruxelles-National Airport to Seattle?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Brussels Bruxelles-National Airport to Seattle departing in June.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Brussels Bruxelles-National Airport to Seattle, 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 Brussels Bruxelles-National Airport to Seattle is December, where tickets cost $597 (return) on average. On the other hand, the most expensive months are January and November, where the average cost of round-trip tickets is $1,232 and $915 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Brussels Bruxelles-National Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Brussels Bruxelles-National Airport to Seattle, you should book around 3 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$388
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 4% increase in price.
Flight from Brussels to Seattle

When to book flights from Brussels to Seattle

Are your dates flexible? Find out the best times to travel from Brussels to Seattle 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 Brussels to Seattle flights

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

    In the last 3 days, the lowest price for a flight from Brussels Bruxelles-National Airport to Seattle was $388 for a one-way ticket and $695 for a round-trip.

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

    Yes

  • Which airports will I be using when flying from Brussels to Seattle?

    When flying out of Brussels you will be using Brussels Bruxelles-National. You will be landing at Seattle, also known as Seattle/Tacoma Intl.

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

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

  • Which airline alliances offer flights from Brussels to Seattle?

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

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

    The two airlines most popular with KAYAK users for flights from Brussels to Seattle are Delta and KLM. With an average price for the route of $1,199 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $882 and an overall rating of 7.8.

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

    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 Brussels to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Brussels 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 Brussels to Seattle?

    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 Seattle with an airline and back to Brussels with another airline. Booking your flights between Brussels and SEA 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 Brussels to Seattle?

    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 Seattle from Brussels up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Brussels to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Brussels to Seattle. 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 Brussels to Seattle? 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.
7.8
KLMOverall score based on 1482 reviews
7.1Entertainment
8.4Crew
7.6Comfort
7.8Boarding
7.3Food
Airline reviews

The flight was delayed. The aircraft was unclean. Promised seat was not given due to change in Aircraft. Not one crew on ground was in a position to give any response. Amsterdam Airport is AVIODABLE Over crowded. Over Expensive. Poor Services.

2.0 MediocreRakesh, Mar 2026
AMS - BOM
Read more KLM reviews

The flight was delayed. The aircraft was unclean. Promised seat was not given due to change in Aircraft. Not one crew on ground was in a position to give any response. Amsterdam Airport is AVIODABLE Over crowded. Over Expensive. Poor Services.

It was really nice journey i personally recommend klm flight

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Terrible last row seats many seats available but no offer to move to better seat

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

Just a bad day to fly. Flight was delayed from scheduled 6:50 pm departure to 8:50 pm. Combination of factors mostly related to weather at the destination airport (which is where the incoming flight originated) which delayed the inbound flight over an hour. Once on board, we taxied but had to hold again on the taxiway for 10 minutes or so. We did not get wheels up until after 9 pm. The flight was smooth but about 18 minutes from our destination, we had to hold for several minutes more due to weather at ORD. We finally landed at ORD about 11:08 pm (accounting for the time difference, that was about a 3 hour delay from our scheduled departure time). It felt like we were never going to get to our destination. But the flight crew and attendants were very good. The movie selection onboard was also very nice. Got to watch half of a movie just during our taxi from the gate at ATL due to the delay!

I liked that it was on time, however, the food was not good.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

They were fast and I like how they used to entertainment system to play video about the safety.

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Efficient boarding and early departure. Very smooth flight. Early arrival in ATL. Great flight.

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

In general, flight attendants were not very welcoming. Because of delays in departure and luggage handling, we missed our connecting flight. Offered a later flight on standby but available seats were then taken by 4 or 5 airline crew so slept at airport and got home next day. I am a frequent traveler, and this experience was the worst.

The most uncomfortable seat i’ve ever had on a flight

Waiting area on top of stairs before Boarding the bus wasn’t great. Took a long time to load the bus to gate.

The real reason why the flying experience with Icelandair ---was mediocre was because of not being able to enter DC airspace yesterday evening. This obviously was out of your control and do realize this is a safety issue. I did notice---that everything was being done to get us to Washington Dulles and we did arrive at Dulles SAFELY with just a 4 hour delay. Thank you!

Nice, quick flight. There were lots of empty seats so they told me I could sit next to the emergency exit where I would have more legroom.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

The Experience Was Torture Spend a few extra dollars and avoid Icelandair at all costs. There is absolutely no refreshments, no food, no drinks. Only water, coffee, tea are free and at only half a tiny cup. Entertainment is limited selection of films, shows and mostly outdated. The seats are smaller than usual, with no cushion, no pillows, no blankets. First time in my life have I witness an airline asking for donations in spare change for a charity. With all the money Icelandair saves by starving the passenger, they can afford to give this charity on their own.

Again, we paid $ 328.00 for specific seats are were assigned those seats.

Generally good. Not their fault but the design of the Boeing 747 had seating supports directly in line with my legs. So my legs always had to straddle this support which caused body misallignment. Such poor design from Boeing. There was no USB port for me to charge my phone. The screen touch control was very poor.

I like crew. They are friendly. The flight was delayed to take off for 1hr and that caused panic at Houston Airport to catch connecting flight due to security check delay. If it has reached on time I would have sufficient time in collecting bags and security check

How about changing the personal out to more friendly human beings? This team was pretty arrogant. No fun!!

Everything could have been better. What needed to be wrong with United went wrong

Excellent service. The crew goes above their way to make the customer comfortable.

It was good. The seats in economy weren’t bad

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Excellent service; they helped me reschedule so I can fly in an earlier flight

Wonderful staff. The boarding process can be improved a little better by adequate prior communication but all in all they did fine. However the boarding gate was quite unfreindly to elderly and who needs help with sevral stairs.

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

There was a delay for the San Francisco-London flight, but we were all informed via text and email. The staff was very friendly and nice and the food was good. I do recommend that the airline offer something without eggs or something vegan for the vegetarian meal option. A lot of Indians are lacto-vegetarian, while some could be allergic to eggs/dairy.

food options were terrible. for a 10-hour flight, there should be 2 decent meals. Also, flight attendants should come around with drinks more than just at the meals.

Smooth flight. The seats were comfortable but the reclining mechanism didn't work very well. My wife's seat required the flight attendant to push the seat forward while she pushed the button. The leg support didn't want to return to its home under the seat. I ordered the diabetic meal which was full of carbs. It was low in sugar but carbs turn into sugar so was it really diabetic? Overall the flight was pleasant, long but pleasant.

Crew were nice, food was good. Boarding was horrendous. We were driven around the airport in a bus forced to climb a long flight of very steep stairs with no adequate handrails to board the plane . In many many years of flying to the US I have never been required to do this . There was no assistance for those needing help getting up the stairs to the plane. A fellow passenger helped me. No idea how other elderly, physically limited passengers or those with young children managed . It was a full flight with crowds trying to get up the stairs. It was an accident waiting to happen.

Horrible, the plane is just old and junky...Filthy restroom, seat was as hard as rock. The food, mystery side dish, inedible..geez..just Horrible. Never flying BA again

We paid for Business Class seats, but system did not have us and they were not available.

the service on Business class should be improved to be at par with industry leaders like Cathay Pacific and Singapore AIrlines. A lot of room for improvement.

I paid for a very expensive Business Class seat to and from Cairo Egypt from Charleston SC. There was partnership from states to London using American Airlines. That leg was amazing. The British Airlines leg was a joke. They used the standard no leg room 3 by 3 seats. A tray was put on the middle seat. The trip was 5 hours, from London to Cairo, thus my BC purchase. There was no screen proving tv/movie options, only a small device plug. The fold down tray and the bag of peanuts were typical of normal short run flying. The one toilet was located in the galley. We all got to know each other well. This was my first and last trip with British Airlines. I now understand why they would NEVER give me a seat chart so that I could make a selection.prior to departure. It honestly would not have made a difference, there were less than 50% of occupied seats. Apparently everyone got the memo but me. I have never felt so cheated as with that trip, got to so another going back to London, yeah. I will be sending a letter to customer service and asking for a refund. I will be photos comparing the two BC legs. OH, one more thing. The FC ticket holders got bulkhead and exit row seats. I know they had to be thrilled

Late takeoff, but on time landing. Lost bags, 3 days to find them, still in transit to my location. Power outlets broken, Wi-Fi not working, so much for working on the long flight.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

Everything you need to know for your flight from Brussels to Seattle

Information on your arrival and departure airports