£351 Cheap Flights to Seattle

View £351 flight on Sun, 19 Apr 2026Opens in a new window

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Cheap round-trip flights to Seattle

Prices were available within the past 7 days and start at £351 for one-way flights and £518 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Icelandair
Tue, 21 Apr - Tue, 28 Apr
LHR
London
SEA
Seattle
£518 Return, found 7 hours ago
£518
Return
found 7 hours ago
Select Icelandair flight, departing Tue, 21 Apr from London to Seattle, returning Tue, 28 Apr, priced at £518 found 7 hours ago
American Airlines
Tue, 1 Dec - Mon, 25 Jan
LGW
London
SEA
Seattle
£524 Return, found 1 day ago
£524
Return
found 1 day ago
Select American Airlines flight, departing Tue, 1 Dec from London to Seattle, returning Mon, 25 Jan, priced at £524 found 1 day ago
Iberia
Tue, 24 Nov - Mon, 30 Nov
LHR
London
SEA
Seattle
£543 Return, found 4 days ago
£543
Return
found 4 days ago
Select Iberia flight, departing Tue, 24 Nov from London to Seattle, returning Mon, 30 Nov, priced at £543 found 4 days ago
British Airways
Wed, 18 Nov - Wed, 2 Dec
LHR
London
SEA
Seattle
£543 Return, found 1 day ago
£543
Return
found 1 day ago
Select British Airways flight, departing Wed, 18 Nov from London to Seattle, returning Wed, 2 Dec, priced at £543 found 1 day ago
Condor
Sun, 12 Apr - Sun, 19 Apr
LGW
London
SEA
Seattle
£550 Return, found 6 hours ago
£550
Return
found 6 hours ago
Select Condor flight, departing Sun, 12 Apr from London to Seattle, returning Sun, 19 Apr, priced at £550 found 6 hours ago

Frequently asked questions

What is the name of Seattle's airport?
Seattle - Tacoma Intl. Airport (SEA) is the most frequently utilized airport in Seattle.
How far is SEA from central Seattle?
If you're staying in central Seattle, it's wise to organise how you'll get into the city before you arrive. The downtown area is approximately 19 kms (12 miles) from Sea-Tac Airport.
What airport is best to fly into Seattle?
Countless travellers visit Seattle each day. With multiple airports positioned around the city, there are a number of places you might hit the tarmac. The major ones are Sea-Tac Airport (19 kms (12 miles) from downtown), Snohomish County - Paine Field Airport (PAE) (32 kms (20 miles) from downtown) and BFI (8 kms (5 miles) from downtown).
How many airlines fly to Seattle?
There are 40 air carriers connecting Seattle to 127 airports globally.
Which airlines fly to Seattle?
Seattle receives the majority of its flights from Alaska Airlines, Delta and American Airlines with Alaska Airlines being the favourite choice of carrier. Los Angeles is the most popular city for passengers to jet off from.
How many nonstop flights are there to Seattle?
Planning an amazing Seattle escape is simple when there are 3,498 direct flights every week to pick from.
Where are the most popular flights to Seattle departing from?
Flights to Seattle departing from Los Angeles, Phoenix and Portland airports are always popular.
How long is the flight to Seattle Airport?
If you're going to Seattle from Los Angeles, you'll have a flight time of 3 hours. Those leaving from Phoenix can expect to be airborne for 3 hours and 17 minutes. From Portland it's 1 hour and 5 minutes away.
How to book the cheapest flight to Seattle?
Don't leave locking in your flight to Seattle until the last possible moment. That's one trick savvy travellers use to get the best prices. Booking well in advance means more choices and more affordable flights. Don't stop there, however. Do some research and see if there are a couple of airports at your destination. Fares often differ depending on the airport you jet into. Be sure to compare fares across airlines too. Last but not least, be ready to secure your seat quickly if you stumble on a great price. It might not stick around for too long! With a bit of knowledge and a little luck, the perfect airfare can be yours.
Do you have any tips for my flight to Seattle?
Depending on where you're coming from, your flight to Seattle could be no sweat at all or it could go on forever. We've put together some tips that will help you start your next great adventure on a positive note. What to pack in your hand luggage:

  • First of all, pack in your passport, travel docs, credit cards and medications. Next, you'll need some in-flight entertainment to while away the time. A thrilling novel and a laptop filled with your favourite movies are some terrific options. If you plan to catch more than just forty winks, a neck pillow and a pair of earplugs will also be useful. Finally, leave space for a toothbrush and some cleansing wipes so you'll hop off the plane feeling fresh and raring to go.

Do not pack the following items in your hand luggage:

  • Double-check that you don't have a sharp object hiding in your hand luggage. Other banned items include explosive or flammable substances, like aerosols and matches, and liquids and gels in containers larger than 3.4 ounces (100 millilitres).

What to wear on a flight:

  • Your aim here is to feel as comfortable as possible. Pick flat, closed-toe shoes, dress in loose, breathable clothing and don't forget to bring a pullover in case you get chilly in the cabin.
  • Caused by sustained periods of immobility, deep vein thrombosis (DVT) is a blood clotting condition that can affect some passengers on long-haul flights. Lower your risks by drinking water, keeping your feet and legs moving and wearing compression socks to help your circulation.

How to get through airport security fast when flying to Seattle?
It's easy — be prepared. We've put together some top tips for an easy trip through airport security. Look out Seattle, here you come:

  • Security personnel first need to establish that you have a valid passport and matching boarding pass before you're allowed to proceed any further. Have them in your hand, ready for inspection.
  • Your jacket, belt, keys and other small items, like coins, will be required to go through the X-ray machine. Make the whole process faster by removing them before your turn.
  • For just a few moments, you'll have to unplug from technology. Your phone, laptop and any other electronics will need to be sent through the scanner.
  • Any liquids or gels, such as hair oil or hand cream, that you want to bring on board need to be in containers no greater than 3.4 ounces (100 millilitres). Also, everything must fit inside a quart-size (one litre), clear zip-close bag.
  • Slip-on shoes are a great footwear choice as you're less likely to have to remove them when passing through security. Safety boots and other heavy shoes are often subjected to additional screening.
  • Airlines will not allow any pocket knives or other sharp items in the cabin. If you must bring these kinds of items, pack them in your checked luggage.

Travel information

Destination airport
Seattle - Tacoma Intl.
Destination airport IATA code
SEA
Destination city name
Seattle
Return price
£119

Trending flights to Seattle

Prices were available within the past 7 days and start at £351 for one-way flights and £518 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Icelandair
Tue, 21 Apr - Tue, 28 Apr
LHR
London
SEA
Seattle
£518 Return, found 7 hours ago
£518
Return
found 7 hours ago
Select Icelandair flight, departing Tue, 21 Apr from London to Seattle, returning Tue, 28 Apr, priced at £518 found 7 hours ago

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