Cheap flights from Seattle to Belgium from $269
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Belgium departing on 7/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Seattle to Belgium
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 Belgium?
In general, February is the cheapest month to fly from Seattle to Belgium. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $527. If you are unable to visit Belgium during the month of February, then departing from Seattle during the month November is also very affordable. Most momondo users find prices during this month for around $534.
What is the cheapest day to depart on your flight to Belgium?
Our data shows that Tuesday is the least expensive day to fly to Belgium. Tickets to fly out on this day can be as low as $626. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $783. These prices are subject to change though, so be sure to set up a Price Alert for flights to Belgium.
What is the cheapest time of day to depart on your flight to Belgium?
Our most recent data shows that the best time of day to fly to Belgium is in the morning. Flights from Seattle to Belgium during this time can be as low as $668. Flights to Belgium are more costly at noon, with an average ticket price of $738. 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 Belgium?
You are more likely to see cheaper flights to Belgium from Seattle when booking 23 weeks ahead of your departure date. In general, you can expect to find flights to Belgium for around $647 when searching 23 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belgium from Seattle for as low as $576 on momondo.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Belgium?
Icelandair, Brussels Airlines, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Belgium
What airlines fly to Belgium?
Icelandair, Lufthansa and British Airways are the top three most popular airlines that fly to Belgium from Seattle according to our data. Icelandair is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Belgium. Keep in mind that there are 11 different airlines that fly to Belgium on a routine basis, so you have a few additional options to choose from.
Cheap Seattle to Belgium flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Belgium
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Belgium?
Prices for flights from Seattle/Tacoma Intl Airport to Belgium are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Belgium?
As of April 2025, there are 11 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Belgium.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Belgium?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Belgium.
What documentation or ID do you need to fly to Belgium?
The travel and health documents required for your trip to Belgium can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Belgium. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Seattle to Belgium
Compare and see reviews for airlines that fly from Seattle to Belgium with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $403 | Free Cancellation | Rating 7.0 484 reviews | |||
| PriceFrom $495 | Free Cancellation | Rating 6.6 6,815 reviews | |||
| PriceFrom $501 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $529 | Free Cancellation | Rating 7.4 8,685 reviews | |||
| PriceFrom $532 | Free Cancellation | Rating 7.0 1,068 reviews | |||
| PriceFrom $532 | Free Cancellation | Rating 7.8 1,333 reviews | |||
| PriceFrom $543 | Free Cancellation | Rating 7.0 9,195 reviews | |||
| PriceFrom $549 | Free Cancellation | Rating 8.0 7,919 reviews | |||
| PriceFrom $554 | Free Cancellation | Rating 7.4 1,444 reviews | |||
| PriceFrom $572 | Free Cancellation | Rating 7.6 1,272 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Belgium?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Belgium for you.
Can I find flights from Seattle to Belgium with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Belgium from Seattle with this policy.
How can momondo help me find flights from Seattle to Belgium?
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 Seattle to Belgium.
I’m not ready to book a flight from Seattle to Belgium right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Belgium from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.