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Amazing British Airways SEA to LHR Flight Deals

The cheapest flights to Heathrow found within the past 7 days were $865 round trip and $724 one way. Prices and availability subject to change. Additional terms may apply.


LHR From SEA Economy Coach Packages on Similar Airlines


FAQs about British Airways Flights from SEA to LHR
Can I catch a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LHR-Heathrow) right now?

For any present London (LHR-Heathrow) quarantine requirements and travel advice, visit our Covid-19 Travel Advisor. Check before you arrange your flight, so you don't get caught up.

What terminal is British Airways at Sea-Tac Airport?

While it's hard to say exactly which terminal your British Airways flight from Seattle - Tacoma Intl. Airport (SEA) to Heathrow Airport (LHR) will leave from, we can tell you that there's a strong chance you'll be arriving at terminal 3.

Are there British Airways non-stop flights from SEA to LHR?

If you're traveling from Sea-Tac Airport to London (LHR-Heathrow) and prefer a direct flight, British Airways can help. Lock in your seat now and you'll be arriving at the other end in no time at all.

How long is a British Airways flight from SEA to LHR?

Life is one big, exciting journey — and so is your trip from Sea-Tac Airport to London (LHR-Heathrow) with British Airways. Taking an average of 10 hours and 46 minutes, be prepared and bring essentials on board like a neck pillow, a cardigan and your toothbrush.

What type of aircraft does British Airways fly from SEA to LHR?

The Boeing 777-200 and the Boeing 787-10 are the two types of aircraft most often flown by British Airways between SEA and LHR.

How many direct and indirect flights does British Airways fly from SEA to LHR?

You'll have a choice of about 26 flights each day with British Airways from Sea-Tac Airport to LHR.

If I am not able to travel due to COVID-19, can I change my booking to a later date?

For more info about changing your flight to Heathrow Airport (LHR), please visit our Customer Service Portal.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2020. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Sunday, as data shows the end of the week is when prices are generally at their highest.

What are the cheapest days to fly?

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2020, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

How far in advance can you book a flight?

Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2020 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2 weeks to 2 months prior to their travel dates.

How can I save money on airline tickets?

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2020 saved nearly 40% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2020. Savings are subject to change based on departure location, date and destination.

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BA 48 07:20 pm 12:40 pm Check fare - Check fare - Check fare - Check fare 0 stop(s)

Travelers ❤️ these 🏨 after their flight to London

Hilton Garden Inn London Heathrow Terminal 2 and 3
Hilton Garden Inn London Heathrow Terminal 2 and 3
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Clean and comfortable

Reviewed on Apr 6, 2021
This hotel features a restaurant, a fitness center, and a bar/lounge. Traveling on business? Take advantage of the 5 conference rooms, as well as the 24-hour ...
Aerotel London Heathrow T2 & T3
Aerotel London Heathrow T2 & T3
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The location is ideal. Directions to the hotel are not clear.

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Free WiFi in public areas is provided and the front desk is staffed around-the-clock.
Hyatt Place London Heathrow Airport
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4.0 out of 5.0 The Grove, Bath Road, West Drayton, England
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The room was spacious and the staff were very helpful - much appreciated by this tired traveler!

Reviewed on Mar 7, 2020
A restaurant and a bar/lounge are featured at this hotel. Traveling on business? Take advantage of the 24-hour business center and free WiFi in public areas. ...

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.