How do most travelers feel about British Airways?

The general consensus from 1,076 Cheapflights users is that British Airways is a 7.0/10. Select your travel dates above for updated prices on flights from London Heathrow Airport to Seattle (LHR-SEA).

Can I get a flight from London Heathrow Airport to Seattle on British Airways for under £800?

London Heathrow Airport to Seattle flights on British Airways are currently available under £800. 1 flights have been found by Cheapflights users under that amount. To find flights for your dates, click here.

£477+ British Airways Flights from Heathrow to Seattle

Cheapflights users flying from London to Seattle on British Airways typically fly into Seattle/Tacoma Intl and depart from London Heathrow. Select your dates above for pricing.

British Airways flights from Heathrow to Seattle in 2025

One-way from	£530
Return from	£477
Popular in	July
Cheapest in	February
Average price (all airlines)	£542

British Airways
23/6
Nonstop
9h 50m total
London to Seattle

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British Airways
13/5-20/5
1 total stop
27h 59m total
London to Seattle

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Highest demand for flights from London Heathrow to Seattle/Tacoma Intl; 15% potential price increase.

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Best time to find cheap flights from London Heathrow to Seattle/Tacoma Intl; 2% potential price drop.

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Average price for all London Heathrow to Seattle/Tacoma Intl flights (one-way and round-trip).

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Can I get a flight from London Heathrow Airport to Seattle on British Airways for under £800?
London Heathrow Airport to Seattle flights on British Airways are currently available under £800. 1 flights have been found by Cheapflights users under that amount. To find flights for your dates, click here.
How do most travelers feel about British Airways?
The general consensus from 1,076 Cheapflights users is that British Airways is a 7.0/10. Select your travel dates above for updated prices on flights from London Heathrow Airport to Seattle (LHR-SEA).

Find British Airways flight deals from Heathrow to Seattle

Cheapest British Airways flights from Heathrow to Seattle
Explore the most affordable British Airways flight options available from Heathrow to Seattle. Find the lowest fares with prices last updated on 30 April 2025.

Tue 13/506:20LHR - SEA

1 stop18h 39mBritish Airways

Tue 20/513:30SEA - LHR

Nonstop9h 20mBritish Airways

Deal found 29/4£477

Travel insights for British Airways flights from Heathrow to Seattle

Get recent, data-driven insights about British Airways flights from Heathrow to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Seattle with British Airways?

Booking with British Airways 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Seattle with British Airways?

Currently, the most affordable month to book a British Airways flight from London Heathrow Airport to Seattle in February, with an average price of £397. Conversely, traveling with British Airways from London Heathrow Airport to Seattle in July will be the most expensive, with an average cost of £616. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Weekly British Airways flight availability from London Heathrow Airport to Seattle

The most British Airways flights from LHR to SEA are scheduled on a Monday (2 on average). You will have fewer British Airways flight options on Sunday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Seattle by month

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.

Temperature in Seattle by month

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).

Best time to book a flight from Heathrow to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Heathrow with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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See what others are saying about British Airways

British Airways

6.6

Okay

6,837 reviews

Check prices

Overview

Recent reviews

8.0

Very Good|Apr 2025

Baby in front of me cried throughout the flight.(This was beyond the crew control) A flight attendant that decided he wanted to have continuous conservation with the passenger also in front of me. Considering it was a night flight it was literally painful. Thank you

10.0

Wonderful|Apr 2025

By turning off the air conditioning, which was on during the best part of the flight

2.0

Poor|Mar 2025

Plane was delayed 2 hours. We were charged extra for luggage and seats. Seat rows were so close together that it was almost impossible to get in and out to use the bathroom, let alone sit comfortably. Food was mediocre at best. Your ambient music is the same tune that is used when AA puts me on hold. Flying has become a nightmare!

2.0

Poor|Feb 2025

My wife bought tickets using her married name, but forgot her passport was still in her maiden name. We were denied boarding and had to cancel our trip - no refunds - the company would not simply change the name on the ticket. It is just wrong to do that to someone like her.

10.0

Wonderful|Feb 2025

After flying on easyJet and Ryan air frequently over the last few years was nice to get back to an airline that was on time and valued its passengers. We will be back !!

1 out of 2279

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British Airways flights from London Heathrow Airport to Seattle (LHR - SEA)

Cheapflights users flying from London to Seattle on British Airways typically fly into Seattle/Tacoma Intl and depart from London Heathrow. Select your dates above for pricing.

British Airways flights from Heathrow to Seattle in 2025

Find detailed information about British Airways flights from Heathrow to Seattle. Explore the options provided by British Airways to plan your journey from Heathrow to Seattle. Data last updated 30 April 2025.

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

Can I get a flight from London Heathrow Airport to Seattle on British Airways for under £800?

How do most travelers feel about British Airways?

Find British Airways flight deals from Heathrow to Seattle

Cheapest British Airways flights from Heathrow to SeattleExplore the most affordable British Airways flight options available from Heathrow to Seattle. Find the lowest fares with prices last updated on 30 April 2025.

Explore the most affordable British Airways flight options available from Heathrow to Seattle. Find the lowest fares with prices last updated on 30 April 2025.

Travel insights for British Airways flights from Heathrow to Seattle

Get recent, data-driven insights about British Airways flights from Heathrow to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Seattle with British Airways?

Use this chart to determine the optimal time to book a return flight from Heathrow to Seattle. Price data was last updated on 25 April 2025.

What is the cheapest month to book a flight from London Heathrow Airport to Seattle with British Airways?

Weekly British Airways flight availability from London Heathrow Airport to Seattle

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

Best time to book a flight from Heathrow to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Heathrow with our price prediction graph.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Heathrow to Seattle on another airline

Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on 30 April 2025.

See what others are saying about British Airways

Overview

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Travel Smart

Cheapest British Airways flights from Heathrow to Seattle
Explore the most affordable British Airways flight options available from Heathrow to Seattle. Find the lowest fares with prices last updated on 30 April 2025.