Cheap flights from Seattle to England from £118

The cheapest month to fly to England from Seattle is in January. Flight prices, which tend to average around £482, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to England from Seattle during November instead. Flights to England in November, while not as cheap as those in January, still average around £504.

The cheapest day to depart from Seattle to England is on a Tuesday when prices can be found for as low as £600. The most expensive day to fly to England is Sunday, with ticket prices averaging around £822.

Flying to England from Seattle at midday is the least expensive time of day to depart. momondo users have found prices as low as £614 when looking at flights departing at midday. Flights to England are more costly in the evening, with an average ticket price of £706. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle/Tacoma Intl - England flight prices

You are more likely to see cheaper flights to England from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to England for around £632 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to England from Seattle for as low as £565 on momondo.

There are 2 cabin classes available to choose from on Seattle to England flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Icelandair, WestJet, and KLM are the most popular carriers operating from Seattle/Tacoma Intl to England

Virgin Atlantic, British Airways and Alaska Airlines are the top three most popular airlines that fly to England from Seattle according to our data. Virgin Atlantic is the first choice among our users, with 57% of people opting to fly with this airline when travelling to England. Keep in mind that there are 3 different airlines that fly to England on a routine basis, so you have a few additional options to choose from.

As of August 2026, there are 21 flights per day flying from Seattle to England. The most common time of day flights depart is 21:00, with 74% of flights taking off in the evening.

As of August 2026, 152 flights take off from Seattle and land in England each week. The most common flight departure day for this route is Wed, with 16% of weekly flights taking off on this day.