Seattle, WA to Brussels, Belgium flights

Flights starting at £372. Choose between Ryanair, WestJet, or Alaska Airlines to find the best price.

One search, all the flights

One search, all the flights

Kiwi-Code finds cheap flights other sites can’t see.

Safe and effortless booking

Safe and effortless booking

We accept most payment methods and guarantee the highest level of security.

Trusted by millions

Trusted by millions

Join over 10 million yearly travellers booking with ease.

Tips to know when travelling to Brussels

Cheapest one-way trip

Cheapest nonstop round-trip

Cheapest round-trip

Average round-trip

Includes rare itinerary

Travel hack

Round trips

One-way trips

Seattle SEADublin DUBBrussels BRU
£405
Mailbox
Receive exclusive deals by email
Travelers usually depart from Seattle–Tacoma International, Seattle, WA - King Street Station, Seattle, WA - Ferry Terminal, Kenmore Air Harbor Seaplane Base, or Seattle, WA - University of Washington when they travel from Seattle to Brussels. Book your trip to arrive at Brussels South Charleroi, Brussels, Brussels - Midi, Antwerp International, or Brussels - Nord. The most popular airlines for this route are Ryanair, WestJet, Alaska Airlines, Icelandair, and United Airlines. Seattle and Brussels have 401 direct flights per week.

Check-in for a flight from Seattle to Brussels

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
RyanairRYRFRNoOpens 24 days before flight
Closes 2 hours before flight
WestJetWJAWSNoOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASYesOpens 24 days before flight
Closes 1 hours before flight
IcelandairICEFIYes0
0
United AirlinesUALUAYesNo

Belgium COVID-19 travel restrictions

Your trip summary

Departure

Travel restrictions
  • Travel is allowed
  • Proof of pre-departure COVID-19 test is not required
  • Quarantine is not required
Visa requirements
  • Visa is not required

Return

Travel restrictions
  • Travel is allowed
  • Proof of pre-departure COVID-19 test is not required
  • Quarantine is not required
Visa requirements
  • Visa is not required

Frequently asked questions

What are the most popular routes to and from Seattle?
What are the most popular routes to and from Brussels?
Which airports are there in Seattle?
What airports are near Seattle?
What airports are near Brussels?
What buses and trains depart from Seattle?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Seattle and Brussels?
What is Virtual Interlining and how do I use it?
Which airlines fly between Seattle and Brussels?
When's the best time to travel between Seattle and Brussels?
What flights operate between Seattle and Brussels?
How many airports are there near Seattle?
How many airports are there near Brussels?
Is it possible to reach Seattle by bus or train?
What time do nonstop (direct) flights between Seattle and Brussels depart?
What time do nonstop (direct) flights between Seattle and Brussels arrive?
What time do flights between Seattle and Brussels depart?
What time do flights between Seattle and Brussels arrive?

Explore alternative trips

Flights from Seattle

Flights to Brussels

Popular routes


We hack the system,
you fly for less