Cheap flights from Belgium to Seattle from $388
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belgium to Seattle departing on 6/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Belgium to Seattle
Recent round-trip flight deals from Belgium to Seattle
Recent one-way flight deals from Belgium to Seattle
Aer Lingus flights from Belgium to Seattle
Our best Aer Lingus deals on Belgium to Seattle flight tickets
Icelandair flights from Belgium to Seattle
Our best Icelandair deals on Belgium to Seattle flight tickets
See travel insights to Seattle from
How to get the cheapest flight ticket from Belgium to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
In general, January is the cheapest month to fly from Belgium to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $662. If you don’t want to visit Seattle in January, then you should wait until March to fly from Belgium, when ticket prices are also cheap, with an average price of $665.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from Belgium is on a Sunday. momondo users have found tickets for Sunday departures for as low as $696. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Belgium because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $979.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from Belgium in the morning is the least expensive time of day to depart. momondo users have found prices as low as $809 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $956. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Belgium when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $748 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Belgium for as low as $689 on momondo.
What is the cheapest airline that flies from Belgium to Seattle/Tacoma Intl?
Aer Lingus, Icelandair, and British Airways are the most popular carriers operating from Belgium to Seattle/Tacoma Intl
What airlines fly to Seattle?
British Airways, Delta and KLM are the top three most popular airlines that fly to Seattle from Belgium according to our data. British Airways is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 8 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
Cheap Belgium to Seattle flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Belgium to Seattle
When did momondo last update prices for flights from Belgium to Seattle/Tacoma Intl Airport?
Prices for flights from Belgium to Seattle/Tacoma Intl Airport are updated daily.
How many operators does momondo search for flights from Belgium to Seattle/Tacoma Intl Airport?
The number of operators available for flights from Belgium to Seattle/Tacoma Intl Airport is 8 as of April 2025.
How old do you have to be to fly from Belgium to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belgium to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Belgium to Seattle
Compare and see reviews for airlines that fly from Belgium to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $524 | Free Cancellation | Rating 7.0 1,063 reviews | |||
| PriceFrom $586 | Free Cancellation | Rating 7.0 482 reviews | |||
| PriceFrom $605 | Free Cancellation | Rating 7.8 1,329 reviews | |||
| PriceFrom $611 | Free Cancellation | Rating 6.6 6,767 reviews | |||
| PriceFrom $616 | Free Cancellation | Rating 8.0 7,917 reviews | |||
| PriceFrom $651 | Free Cancellation | Rating 7.6 1,269 reviews | |||
| PriceFrom $670 | Free Cancellation | Rating 6.7 7,012 reviews | |||
| PriceFrom $694 | Free Cancellation | Rating 7.4 8,667 reviews |
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Belgium to Seattle?
Finding the right flight to Seattle from Belgium is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.
Can I find flights from Belgium to Seattle with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Seattle from Belgium with this policy.
How can momondo help me find flights from Belgium to Seattle?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Belgium to Seattle.
I’m not ready to book a flight from Belgium to Seattle right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Belgium and alert you when they change.