Cheap flights from Seattle (SEA) to Heathrow (LHR)

Flight FAQs

From Seattle to Heathrow

Are flight prices decreasing from Seattle to Heathrow due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and Heathrow for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Seattle/Tacoma Intl to London Heathrow to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Delta is one of them. Some of the new policies that have been implemented to accommodate travelers flying from Seattle/Tacoma Intl to London Heathrow are improved sanitation, HEPA filters, mask requirements, social distance seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

Which airlines flying from Seattle/Tacoma Intl to London Heathrow have flexible cancellations due to COVID-19?

Some of our airline partners flying from Seattle/Tacoma Intl to London Heathrow have new flexible policies in place due to COVID-19. Delta, Virgin Atlantic, and British Airways are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like Delta with this kind of flexibility.

Can I find flights from Seattle to Heathrow for under $600 on Cheapflights?

Yes, there are multiple flights from Seattle to Heathrow for under $600. The cheapest flight booked recently is on Aeromexico for just $527, but on average you can expect to pay $539.

Are there nonstop flights from Seattle to Heathrow for under $700 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Heathrow under $700. A good price for a nonstop flight from Seattle to Heathrow is less than $628.

Are there last-minute flights available from Seattle to Heathrow for under $700?

There are currently 20+ open flights from Seattle to Heathrow within the next 7 days for less than $700.

Does it rain more in Seattle or Heathrow?

When traveling, we recommend packing in preparation to handle common weather conditions. The rainfall in Seattle is typically greater than that of Heathrow. We can gather that this will continue over the next 19 days.

Is Seattle weather warmer or cooler than Heathrow?

With an average temperature of 77 °F, peak weather can be found in July. As a traveler, expect to see changes in flight prices during that period. The temperatures in Heathrow are colder than in Seattle.

How long is the flight from Seattle to Heathrow?

A quick flight from Seattle to Heathrow can take about 9h 15m. Delta provides one of the quickest options available for as low as $529. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Seattle to Heathrow round-trip?

Currently priced at $527, Aeromexico will fly you from Seattle to Heathrow and back. In addition to Aeromexico, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Icelandair - these airlines can fly you to your destination from $529 and $547, respectively. You may be able to fly from Seattle to Heathrow for 20% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from Seattle to Heathrow one-way?

The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $283. Check flights for Iberia, as they currently have the next best price.