Find flights
Deals
When to book
FAQs & Tips
Airlines

Find cheap flights from Seattle to Belgium from $319

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 Belgium departing on 7/27. 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
Fri 7/5
Fri 7/12

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

In the last 7 days travelers have searched 44,281,614 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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

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

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

Best Belgium Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Brussels
Brussels1 stop$418

Good to know

Low season

January

High season

July

Cheapest flight

$319
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 31% increase in price.
Flight from Seattle to Brussels Airport

FAQs - booking Belgium flights

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

    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 Belgium.

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

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

    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 Belgium with an airline and back to Seattle with another airline.

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

    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 Belgium 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 cheap flights to Belgium

  • Morning departure is around 9% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Seattle to Belgium

Need help choosing which airline to fly with from Seattle to Belgium? 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.
7.5
Air FranceOverall score based on 1720 reviews
7.4Comfort
8.2Crew
7.1Entertainment
7.5Boarding
7.1Food
Airline reviews

Old cabine without flat bed in business for a 12 hour flight is not acceptable

4.0 OkayAnonymous, Apr 2024JNB - CDG
Read more about Air France reviews

Old cabine without flat bed in business for a 12 hour flight is not acceptable

Medíocre. The food wasn't good (although not bad, bad) and the staff wasn't kind. I asked for n extra blanket, the steward never came back, serving us roughly.

Excellent apart from transport to actual plane 10 minutes from the actual gate , walking out in the tarmac in the rain and having to climb stairs to enter while holding luggage.

Did not find the wheelchair that supposed to assist and went to a long queue for transit security chk which was very slow and boarding desk wanted to close counter although that they knew that I am minutes away because of their mistake of not providing the wheelchair.

Boarding was smooth and on time. The seat was comfortable and the entertainment worked. Staff were gracious.

Business class in the second leg - CDG-EVN was a disaster.

Everything went smoothly with Air France. There was a delay in departure which seemed to relate to the immigration services being short staffed.

worst experience ever i choose my seat in advance and also have my seat selected in my boarding and the they told me that my seat has been changed without notify me

I have used Air France and KLM many times it will help if they change their menu's feel like it's been the same for years!!!, Especially the breakfast. Overall the flight was good and enjoyable.

No birding was given for next trip on same carrier, food was very moderate.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Everything was pretty good except for food. They need to improve on it compared to other airlines.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the premium paid for the first class ticket

Not worth the price of premium class ticket paid, felt more like steerage.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

I flew Delta last week and United Airlines is a poor substitute mechanical problems with the plane and shitty food among other things made my travel experience what’s become to be expected from United no way is it ever worth the money they make us pay

I had a great flight. Everything went smoothly and the flight arrived early.

Well....let's start from the point that I had to stay in airport for 12 hours instead of 2 that was scheduled. Poor company and even worst customer service. Never again....

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

Very nice flight, easy connections in Keflavík, and friendly crew.

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.

Poor, we had 1 hour to grab our checked luggage, go through customs, recheck bags and run across terminals to make our United flight. Poorly planned connections.

Check in in Albuquerque was awful. The people were great but they were over loaded. The procedures were terrible. We got through fine but it took 90+ minutes.

Will try to not fly with them again. Delays because of weather but got redirected to an airport where I could not make connection.

Staff didn’t care in business class. Closed the door on my mom while she was on the jetbridge and flight attendant told me she would make it from the connecting flight. They lied. My luggage was damaged on arrival. No success in filing damage claim.

Boston Logan is a crummy airport - signage is terrible or lacking in areas. Boarding seemed to be a free for all and with all the different airlines speaking, you couldn't tell who was supposed to be where and when. Plain and simple, airlines should board from the back of the plane to the front. Also someone was sitting in my seat. By the time that was figured out, I had to place my overhead behind me which made de-planing more difficult. Logan is not Lufthansa's fault so that is not on them, Boarding is on them! Still, overall it was a Good Experience flying with Lufthansa. This is not my first flight with them...

Overall, the flight was comfortable without any serious issues. Transit through Frankfurt airport was a little confusing, but not too difficult if you follow the signs

There was a screaming child behind our seats. This prevented us from getting any sleep during the night.

There was a screaming child just behind our seats. This prevented us from getting any sleep during the night!!

Staff disappeared after dinner service until breakfast, no help with beds, no help running to our gate to catch connection cause flight was late, our luggage didn’t make it, took over 24 hours to get luggage to hotel, no compensation!!

Everything was good except food. I believe there is room for improvement

Awful. Delay, lost vacation time and travel time now more than 24h

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

There was a problem in the luggage because there were not porters

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

they are improving. The crew from Charlotte to Tampa was outstanding. SMILING and trying to be helpful with the customers.

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

Book cheap flights from Seattle to Belgium

Recent round-trip flight deals

11/5Tue
1 stopAir Canada
13h 10mSEA-BRU
11/14Thu
1 stopAir Canada
20h 14mBRU-SEA
$418
11/4Mon
1 stop
13h 00mSEA-BRU
11/11Mon
1 stop
26h 55mBRU-SEA
$445
10/1Tue
1 stopIcelandair
12h 00mSEA-BRU
10/22Tue
1 stopIcelandair
13h 05mBRU-SEA
$522
9/12Thu
1 stopIcelandair
12h 00mSEA-BRU
10/3Thu
1 stopIcelandair
13h 05mBRU-SEA
$528
10/12Sat
1 stopDelta
24h 50mSEA-BRU
10/22Tue
1 stopDelta
13h 25mBRU-SEA
$547
10/12Sat
2 stopsBritish Airways
18h 39mSEA-BRU
10/22Tue
1 stopBritish Airways
24h 50mBRU-SEA
$570
10/12Sat
2 stopsBritish Airways
18h 39mSEA-BRU
10/22Tue
2 stopsBritish Airways
19h 08mBRU-SEA
$580
9/17Tue
1 stopDelta
24h 46mSEA-BRU
10/11Fri
1 stopDelta
13h 25mBRU-SEA
$601
8/6Tue
1 stopUnited Airlines
23h 30mSEA-BRU
8/21Wed
1 stopUnited Airlines
17h 00mBRU-SEA
$790
8/6Tue
2 stopsUnited Airlines
21h 45mSEA-BRU
8/21Wed
1 stopUnited Airlines
17h 00mBRU-SEA
$795

Search by stops

Search by airline

Search by price

Recent one-way flight deals

7/27Sat
2 stops
51h 30mSEA-BRU
$319
7/27Sat
3 stops
48h 15mSEA-CRL
$341
7/27Sat
3 stops
29h 45mSEA-BRU
$422
7/27Sat
2 stops
32h 10mSEA-CRL
$459
6/16Sun
3 stops
55h 27mSEA-CRL
$503
7/27Sat
1 stop
29h 15mSEA-BRU
$543
6/16Sun
3 stops
49h 02mSEA-BRU
$585
6/16Sun
2 stopsAmerican Airlines
35h 24mSEA-BRU
$665
7/26Fri
2 stopsAmerican Airlines
32h 46mSEA-BRU
$688
6/16Sun
1 stopAir France
16h 35mSEA-BRU
$717

Search by stops

Search by airline

Search by price

Last minute flights from Seattle to Belgium

Last minute flight, train and bus deals

6/10Mon
multi-stop
21h 00mSEA-BRU
6/14Fri
multi-stop
22h 19mBRU-SEA
$950
6/10Mon
multi-stop
21h 00mSEA-BRU
6/15Sat
multi-stop
20h 32mBRU-SEA
$960
6/10Mon
multi-stop
15h 20mSEA-BRU
6/15Sat
multi-stop
20h 32mBRU-SEA
$970
6/10Mon
multi-stop
15h 20mSEA-BRU
6/15Sat
multi-stop
16h 10mBRU-SEA
$1,030
6/10Mon
multi-stop
11h 55mSEA-BRU
6/14Fri
multi-stop
27h 05mBRU-SEA
$1,049
6/10Mon
multi-stop
22h 40mSEA-BRU
6/14Fri
multi-stop
34h 57mBRU-SEA
$1,347
6/10Mon
multi-stop
24h 25mSEA-BRU
6/14Fri
multi-stop
34h 57mBRU-SEA
$1,349
6/10Mon
multi-stop
25h 50mSEA-BRU
6/15Sat
multi-stop
29h 02mBRU-SEA
$1,354
6/10Mon
multi-stop
32h 25mSEA-CRL
6/14Fri
multi-stop
33h 10mCRL-SEA
$3,015

Search by stops

Search by price

Seattle - Belgium Flights

Departure:

Seattle (SEA)United States

Return flight deals:

Belgium - Seattle

Cabin classes:

Browse destinations: