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Find cheap British Airways flights to Seattle

RDU — SEA
26 Aug — 2 Sep1
1 adult
1 adult, Economy, 0 bags

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Cheapest British Airways flights from United Kingdom to Seattle
Explore the most affordable British Airways flight options available from United Kingdom to Seattle. Find the lowest fares with prices last updated on 27 July 2026.

Wed 12/809:50
LHR
-
SEA
Nonstop9h 45m
British Airways
Sun 16/820:20
SEA
-
LHR
Nonstop9h 25m
British Airways
Deal found 22/7£496
Tue 25/813:10
LHR
-
SEA
1 stop15h 42m
British Airways
Mon 7/920:20
SEA
-
LHR
Nonstop9h 25m
British Airways
Deal found 25/7£532
Tue 25/813:10
LHR
-
SEA
1 stop15h 42m
British Airways
Sun 6/913:30
SEA
-
LHR
Nonstop9h 15m
British Airways
Deal found 24/7£533

Flights to Seattle with British Airways at a glance

Find detailed information about British Airways flights from United Kingdom to Seattle. Explore the options provided by British Airways to plan your journey from United Kingdom to Seattle. Data last updated 27 July 2026.

Popular in

August

Cheapest in

March

Average price

£617

Return from

£460

One-way from

£418
Highest demand for flights to Seattle with British Airways; 6% potential price increase.
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Best time to find cheap flights to Seattle with British Airways; 1% potential price drop.
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Average price for flights to Seattle with British Airways (return).
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British Airways
  • British Airways
  • 1/9-12/9
  • Nonstop
  • 19h 10m total
  • United Kingdom to Seattle
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British Airways
  • British Airways
  • 22/9
  • Nonstop
  • 9h 45m total
  • United Kingdom to Seattle
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Cheapflights Insights

Find cheap British Airways flights to Seattle

How long is the flight to Seattle with British Airways?

On average, British Airways flights from the United Kingdom to Seattle take 12 hours 7 minutes. Flights to Seattle from other popular cities in the United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

British Airways weekly flight availability to Seattle

The most flights to Seattle operated by British Airways are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

When is the best time to book a flight to Seattle with British Airways?

The best time to book a flight to Seattle with British Airways is 89 days before departure. On average, fares are higher if you book 25 days before departure.

FAQs about flights to Seattle with British Airways

  • Which airport do British Airways flights arrive at when travelling to Seattle?

    British Airways flights on this route tend to land at Seattle/Tacoma Intl Airport.

  • Is British Airways the cheapest airline for a flight to Seattle?

    Flight prices will depend on factors like date, time, and cabin class, so it is worth comparing flights before booking. Based on Cheapflights data, the cheapest average return price for flights to Seattle tends to be with Air Canada.

  • Are there alternative airlines other than British Airways that fly to Seattle?

    Virgin Atlantic, Icelandair and Alaska Airlines all fly to Seattle and offer an alternative to British Airways.

  • How much is a British Airways flight to Seattle?

    The average price for a return flight with British Airways is £636, while a one-way flight costs around £621.

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Reviews of British Airways

See what Cheapflights users have to say about their British Airways experience.
British Airways
6.7
Okay
8,132 reviews
Check prices
Overview

Entertainment

6.5

Crew

7.7

Comfort

6.8

Food

6.4

Boarding

7.0

Popular British Airways flights

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Fly your favourite airline to Seattle/Tacoma Intl

Fly your favorite airline to Seattle/Tacoma Intl. Flight routes are based on user searches made on Cheapflights and were last updated on 27 July 2026.
British Airways flights from London to Seattle
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