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Find cheap flights from Seattle to Belgium from $388

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 8/13. 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
sam. 6/15
sam. 6/22

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Best Belgium Flight Deals

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

Brussels
Brussels1 stop$834

Good to know

Low season

January

High season

July

Cheapest flight

$388
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Seattle to Charleroi Brussels

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 21% cheaper 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 1764 reviews
7.2Food
7.5Boarding
7.4Comfort
7.1Entertainment
8.2Crew
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.

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.

We transited through Chad and what was supposed to be a 1hr 20 minutes transit time lasted over 4hrs. We didn't get regular updates until we complained. After a 10hr flight from Paris no form of refreshment given and finally arrived Abuja over 6hrs later and none of my bags came

Standard flight experience, but there is only power at the seat to row 20 on the aircraft, on my initial check in it did not say that was the case

Not a fan of the diagonal partially enclosed business class seats or how they have to be converted to beds manually by crew. I prefer more isolation and user control for switching to lie flat.

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

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.

Second time I took this flight, and they lost my luggage both times. Waiting for my suitcase now, last time it took two days to get it back.

Everything could be better. The plain was in Orlando for 3 hours prior to boarding. After boarding all the passengers they found out that plane has a mechanical problem. After an hour the problem was solved, the pilot comes on and states, (We have to go back to the gate and take on more fuel!) Are you kidding me???? Who they have for pilots, Boy scouts?? I barely made my connecting flight to Vienna, but my suitcase did not. I'm still waiting for it, in Gyor, Hungary. Am I having fun yet?? Other passenger were in the same binned. I travelled all over the world both for business and pleasure with all types of airlines. By far of all the carriers I travelled with, Discover is the worst. I'm contemplating to bight the bullet and go back to the US with a different carrier. For International flights, the seats are made for little people. The person in front of me had his seat reclined the whole way, I felt like he was sitting in my lap. For closing, I would not let my dog travel with Discover, yet alone recommend it to an other person. Does it sound like I'm frustrated, Think about having to travel back to the US with them. I'm sure I'll not hear back from you, because nobody wants to hear about bad news, but with all the hype Discover puts out there about their services, nothing could be further from the truth. Joseph A. Nagy

Only problem we experienced was not anything to do with Lufthansa. When changing planes in Frankfurt we spent over an hour on passport control line. Lufthansa did a marvelous job on everything from keeping me informed via texts, to terrific cabin crew.

Bordón could be bettet if the company say before boarding the order of the different groups.

Checked in is easy and it was a smooth flight from LAX to Munich

There is no recline on flight from DFW to FRA. Middle eastern airways provide better recline option for the same class. FRA to Bangalore has better recline option. I bid 100$ for premium economy, my request was declined. But staff handled it without issues.

The Lufthansa part was wonderful. The short connection flight was not.

German crew were very kind. Food was okay but can be better, especially bread was not good, Garbage collection was very poor.

Awful Terrible staff poor communication Flight delayed for an hour with no apology or explanation and no help re missing connecting flight. Resulted in a 7 hour layover at Munich waiting for another connecting flight. Only 15 euros refreshment voucher given. Will not fly Lufthansa again

Both flights were late for what appeared to be the airline’s not having the planes ready. Arrived over 6 hours late.

- OK plane. Basic accommodations. OK food. The digital window shade wasn't working.

- OK plane. Basic accommodations. OK food. The digital window shade wasn't working. - Expect to be woken up more than an hour before landing when they start dinging the bell and making announcements and turning on all cabin lights to serve a snack. I would prefer they remain quiet and only serve people who want to wake up.

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

It was ok, not as good as it used to be. The Heathrow connection was a disaster - complete anarchy, unknowledgable and skimpy assistance and signage. Gate crew at next flight was great, held the flight while my wife struggled through security.

It was great! The seats were comfortable, and they fed me during the transatlantic flight, something which I have been missing out on for the past 3 years as I travel to and from school.

This flight was cancelled at the last minute. We were rebooked on another flight but a day later. We lost a day of our vacation and paid for a night in a hotel we couldn’t use. The flights we were rebooked on (both American) messed up our seating on both flights-we didn’t get the seats we had paid for. All in all, a terrible experience.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

The seats were tiny, being of a fairly petite build, I don’t usually expect to feel crammed and cramped in a seat, but I definitely was on this flight. I couldn’t even bend over to get anything out from under the seat in front and getting up to go to the bathroom at night with the seat backs reclined was nearly impossible. I had to do gymnastics to get over and out. For an airline that does long flights overnight, it’s kind of ridiculous.

Not connecting flights. Missed my flight from Dublin to Liverpool because I arrived at Dublin one hour too late. For this mistake, they offered me a flight from Dublin to Manchester. Thats great and all, but I waste time and money to commute to Liverpool. Be sure to check the time of your connecting flights, because they sure don’t when they sell it to you

Book cheap flights from Seattle to Belgium

Recent round-trip flight deals

6/17lun.
1 stopAir Canada
13h 40mSEA-BRU
8/30ven.
1 stopAir Canada
20h 25mBRU-SEA
$834
6/17lun.
1 stopAir Canada
13h 40mSEA-BRU
8/30ven.
2 stopsAir Canada
20h 55mBRU-SEA
$839
6/17lun.
2 stopsUnited Airlines
25h 41mSEA-BRU
8/30ven.
2 stopsUnited Airlines
30h 48mBRU-SEA
$853
6/18mar.
2 stopsBritish Airways
21h 50mSEA-BRU
8/19lun.
2 stopsBritish Airways
34h 56mBRU-SEA
$893
6/7ven.
2 stopsLufthansa
36h 15mSEA-BRU
6/10lun.
2 stopsLufthansa
24h 28mBRU-SEA
$894
6/18mar.
1 stopUnited Airlines
13h 40mSEA-BRU
8/19lun.
1 stopUnited Airlines
32h 33mBRU-SEA
$901
6/26mer.
1 stopBritish Airways
15h 35mSEA-BRU
7/11jeu.
1 stopBritish Airways
23h 25mBRU-SEA
$1,072
6/17lun.
1 stopDelta
24h 45mSEA-BRU
7/10mer.
1 stopDelta
13h 05mBRU-SEA
$1,094
6/18mar.
2 stopsDelta
17h 40mSEA-BRU
7/10mer.
1 stopDelta
13h 05mBRU-SEA
$1,098
6/17lun.
2 stopsLufthansa
24h 25mSEA-BRU
7/12ven.
1 stopLufthansa
14h 15mBRU-SEA
$1,319

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Recent one-way flight deals

8/13mar.
3 stops
59h 05mSEA-CRL
$388
8/13mar.
2 stops
16h 45mSEA-BRU
$391
6/7ven.
2 stops
41h 05mSEA-BRU
$432
8/12lun.
3 stops
33h 45mSEA-CRL
$469
8/12lun.
1 stopAir Canada
13h 40mSEA-BRU
$539
8/12lun.
2 stopsBritish Airways
17h 45mSEA-BRU
$552
8/11dim.
2 stopsBritish Airways
26h 13mSEA-BRU
$575
7/12ven.
2 stopsUnited Airlines
21h 45mSEA-BRU
$594
6/6jeu.
2 stopsAmerican Airlines
33h 45mSEA-BRU
$1,131
6/6jeu.
1 stopUnited Airlines
23h 35mSEA-BRU
$1,133

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Last minute flights from Seattle to Belgium

Last minute flight, train and bus deals

5/20lun.
multi-stop
22h 55mSEA-BRU
5/28mar.
multi-stop
15h 20mBRU-SEA
$930
5/20lun.
multi-stop
15h 20mSEA-BRU
5/28mar.
multi-stop
15h 20mBRU-SEA
$963
5/20lun.
multi-stop
22h 55mSEA-BRU
5/28mar.
multi-stop
20h 44mBRU-SEA
$980
5/17ven.
multi-stop
14h 45mSEA-BRU
5/28mar.
multi-stop
15h 20mBRU-SEA
$1,176
5/20lun.
multi-stop
19h 40mSEA-BRU
5/28mar.
multi-stop
19h 35mBRU-SEA
$1,255
5/17ven.
multi-stop
29h 15mSEA-BRU
5/28mar.
multi-stop
15h 20mBRU-SEA
$1,260
5/17ven.
multi-stop
34h 36mSEA-BRU
5/28mar.
multi-stop
21h 22mBRU-SEA
$1,500
5/17ven.
multi-stop
14h 45mSEA-BRU
5/28mar.
multi-stop
17h 16mBRU-SEA
$1,673
5/17ven.
multi-stop
21h 00mSEA-BRU
5/28mar.
multi-stop
15h 20mBRU-SEA
$1,757
5/17ven.
multi-stopAmerican Airlines
36h 30mSEA-BRU
5/28mar.
multi-stopAmerican Airlines
19h 44mBRU-SEA
$1,850

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Seattle - Belgium Flights

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