Question 1

How long is the flight from Belfast to Seattle?

Accepted Answer

For as low as £762, British Airways can have you in Seattle from Belfast in 33h 25m. Airlines will cover a distance of 4472 mi.

Question 2

E

Accepted Answer

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Question 3

E

Accepted Answer

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Question 4

What is the cheapest time of day to fly from BFS to SEA?

Accepted Answer

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast to Seattle as you normally would.

Question 5

What airport do you fly into for flights to Seattle from Belfast?

Accepted Answer

Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Belfast. On average, Seattle/Tacoma Intl has 0 inbound flights from Belfast per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

Question 6

Can I find deals for flights from Belfast to Seattle that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Belfast to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 7

How can I find direct flights from Belfast to Seattle?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to Seattle.

Question 8

Can I find deals for business class flights from Belfast to Seattle?

Accepted Answer

Yes. Cheapflights offers flight deals from Belfast to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 9

How does Cheapflights help users find flights from Belfast to Seattle?

Accepted Answer

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Belfast to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Question 10

Why should you use Cheapflights to find cheap flight tickets from Belfast to Seattle?

Accepted Answer

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Question 11

Can Cheapflights find flights from Belfast to Seattle with no change fees?

Accepted Answer

Certainly. Search results for flights to Seattle from Belfast shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 12

Can Cheapflights notify me if prices for flights from Belfast to Seattle become cheaper?

Accepted Answer

Yes, Cheapflights offers price alerts on Belfast to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

Cheap flights from Belfast to Seattle from £762

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast to Seattle

Cheapest flights from Belfast to SeattleExplore the most affordable flight options available from Belfast to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Explore the most affordable flight options available from Belfast to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Belfast to SeattleDiscover carefully curated flight deals from Belfast to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from Belfast to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

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Related info for your journey

What airport do you fly into for flights to Seattle from Belfast?

How long is the flight from Belfast to Seattle?

Can I find deals for flights from Belfast to Seattle that include hotel bookings?

How can I find direct flights from Belfast to Seattle?

Can I find deals for business class flights from Belfast to Seattle?

Travelling to a place near Seattle?

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Alternative routes for Belfast to Seattle

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Complete your trip

Complete your trip to Seattle by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Washington

Book a non-stop flight to one of these other cities located in Washington.

Search flights from Belfast to Seattle by cabin class

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Belfast and Seattle flights

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Other flights to Seattle

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How does Cheapflights help users find flights from Belfast to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Belfast to Seattle?

Can Cheapflights find flights from Belfast to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Belfast to Seattle become cheaper?

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Cheapest flights from Belfast to Seattle
Explore the most affordable flight options available from Belfast to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Belfast to Seattle
Discover carefully curated flight deals from Belfast to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.