How long is the flight from United Kingdom to Seattle?

A quick flight from United Kingdom to Seattle can take about 13h 05m. Icelandair provides one of the quickest options available for as low as £452. Airlines will cover a distance of 4807 mi. Both multi-stop and direct flights can be found to your destination and back.

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

For one-way options, check prices for WestJet. According to our data, you can fly for as low as £253. Users have also found prices from £345 and £347 on British Airways and Virgin Atlantic, respectively.

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.

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).

What are the most popular routes from United Kingdom to Seattle?

The most popular flight routes from United Kingdom to Seattle are London Heathrow - Seattle/Tacoma Intl, London Gatwick - Seattle/Tacoma Intl and London City - Seattle/Tacoma Intl.

What are the cheapest flights from United Kingdom to Seattle?

Looking for the cheapest flight from United Kingdom to Seattle? While on average our users pay £1,737, our data indicates the cheapest price to be £413. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £354.

What are the most reliable airlines from United Kingdom to Seattle?

The top 3 most reliable airlines when flying from United Kingdom to Seattle are Scandinavian Airlines (95%), Air France (88%) and Delta (85%).

What are the most popular airlines that fly from United Kingdom to Seattle?

Virgin Atlantic, British Airways and Icelandair are the most popular airlines when flying from United Kingdom to Seattle.

What airport do you fly into for flights to Seattle from United Kingdom?

For a flight from United Kingdom to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

Can I find deals for flights from United Kingdom to Seattle that include hotel bookings?

Yes. In addition to deals on United Kingdom to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from United Kingdom to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Seattle.

Can I find deals for business class flights from United Kingdom to Seattle?

Yes. Cheapflights offers flight deals from United Kingdom to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£330+ Flights from the United Kingdom to Seattle

Cheap flight deals from United Kingdom to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Seattle
Explore the most affordable flight options available from United Kingdom to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 December 2025.

Tue 23/1220:35LHR - SEA

1 stop28h 25mIcelandair

Tue 6/114:35SEA - LHR

1 stop20h 55mIcelandair

Deal found 15/12£514

Tue 23/1220:35LHR - SEA

1 stop28h 25mIcelandair

Mon 29/1214:35SEA - LHR

1 stop20h 55mIcelandair

Deal found 15/12£609

Wed 24/1212:20LHR - SEA

Nonstop10h 38mAir France

Wed 31/1206:10SEA - LHR

1 stop16h 55mAir France

Deal found 15/12£637

Wed 24/1213:25LHR - SEA

2 stops28h 06mAir Canada

Wed 31/1210:05SEA - LHR

1 stop17h 45mAir Canada

Deal found 15/12£710

Tue 16/1214:10LHR - SEA

1 stop17h 15mBritish Airways

Sun 11/118:50SEA - LHR

Nonstop9h 30mBritish Airways

Deal found 14/12£742

Tue 16/1214:10LHR - SEA

1 stop17h 15mBritish Airways

Wed 14/118:50SEA - LHR

Nonstop9h 30mBritish Airways

Deal found 15/12£744

Wed 24/1206:20STN - SEA

2 stops17h 20mMultiple Airlines

Wed 31/1214:35SEA - STN

2 stops18h 40mMultiple Airlines

Deal found 13/12£751

Wed 24/1220:50LTN - SEA

2 stops26h 50mMultiple Airlines

Wed 31/1214:35SEA - LTN

2 stops23h 20mMultiple Airlines

Deal found 15/12£775

Wed 24/1220:00LGW - SEA

2 stops27h 40mMultiple Airlines

Wed 31/1214:35SEA - LGW

2 stops23h 50mMultiple Airlines

Deal found 15/12£828

Sun 28/1205:50MAN - SEA

2 stops20h 46mDelta

Wed 7/107:10SEA - MAN

2 stops19h 00mDelta

Deal found 14/12£831

Tue 16/1206:10LGW - SEA

2 stops21h 43mMultiple Airlines

Sun 11/123:10SEA - LGW

1 stop26h 50mMultiple Airlines

Deal found 14/12£861

Mon 22/1208:05MAN - SEA

1 stop18h 15mAer Lingus

Mon 29/1220:05SEA - MAN

1 stop27h 30mAer Lingus

Deal found 15/12£882

Best flights from United Kingdom to Seattle
Discover carefully curated flight deals from United Kingdom to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 December 2025.

Thu 29/108:15BRS - SEA

2 stops16h 45mMultiple Airlines

Thu 5/214:35SEA - BRS

2 stops19h 35mMultiple Airlines

Deal found 15/12£437

Thu 5/211:55LGW - SEA

1 stop13h 05mIcelandair

Thu 19/214:35SEA - LGW

1 stop12h 20mIcelandair

Deal found 14/12£452

Wed 28/109:00LHR - SEA

2 stops20h 12mSWISS

Wed 4/210:58SEA - LHR

2 stops18h 02mSWISS

Deal found 14/12£523

Tue 10/306:30LHR - SEA

1 stop13h 40mUnited Airlines

Tue 17/308:00SEA - LHR

2 stops40h 30mUnited Airlines

Deal found 14/12£528

Fri 30/114:50LHR - SEA

2 stops27h 32mWestJet

Fri 6/211:55SEA - LHR

2 stops16h 55mWestJet

Deal found 15/12£541

Thu 5/214:55LHR - SEA

Nonstop10h 00mFinnair

Wed 18/218:50SEA - LHR

Nonstop9h 30mFinnair

Deal found 14/12£544

Wed 14/110:05LHR - SEA

1 stop19h 42mBritish Airways

Thu 1/1013:35SEA - LHR

Nonstop9h 15mBritish Airways

Deal found 15/12£551

Mon 9/217:05LCY - SEA

1 stop26h 35mVirgin Atlantic

Mon 23/215:05SEA - LCY

1 stop17h 30mVirgin Atlantic

Deal found 15/12£585

Thu 29/119:10BHX - SEA

2 stops35h 15mScandinavian Airlines

Thu 5/211:30SEA - BHX

2 stops23h 00mScandinavian Airlines

Deal found 15/12£587

Wed 4/306:00BHX - SEA

2 stops21h 03mLufthansa

Tue 17/315:00SEA - BHX

1 stop19h 05mLufthansa

Deal found 13/12£620

Mon 30/310:25LGW - SEA

1 stop15h 13mAir France

Wed 8/418:40SEA - LGW

1 stop13h 25mAir France

Deal found 14/12£621

Wed 28/106:00BRS - SEA

1 stop13h 50mKLM

Wed 4/215:05SEA - BRS

1 stop17h 50mKLM

Deal found 14/12£631

Wed 4/306:15BHX - SEA

1 stop13h 20mDelta

Tue 17/314:40SEA - BHX

1 stop20h 10mDelta

Deal found 13/12£634

Fri 16/110:40GLA - SEA

2 stops19h 40mIberia

Mon 19/108:04SEA - GLA

2 stops22h 26mIberia

Deal found 12/12£699

Sat 25/417:45STN - SEA

1 stop31h 30mTurkish Airlines

Sat 2/519:10SEA - STN

1 stop31h 05mTurkish Airlines

Deal found 14/12£716

Thu 29/111:15GLA - SEA

1 stop13h 45mIcelandair

Thu 5/214:35SEA - GLA

1 stop11h 20mIcelandair

Deal found 14/12£536

Fri 30/106:50LHR - SEA

2 stops23h 53mUnited Airlines

Sat 31/109:00SEA - LHR

2 stops40h 40mUnited Airlines

Deal found 15/12£537

Thu 29/108:20GLA - SEA

2 stops16h 40mMultiple Airlines

Thu 5/214:35SEA - GLA

2 stops17h 05mMultiple Airlines

Deal found 14/12£539

Wed 14/109:20LCY - SEA

2 stops19h 52mSWISS

Thu 1/1014:52SEA - LCY

2 stops18h 23mSWISS

Deal found 15/12£542

Tue 10/309:10LCY - SEA

2 stops19h 44mBritish Airways

Tue 17/313:37SEA - LCY

2 stops41h 28mBritish Airways

Deal found 15/12£585

Tue 27/120:05LCY - SEA

1 stop23h 45mVirgin Atlantic

Tue 3/207:40SEA - LCY

2 stops17h 50mVirgin Atlantic

Deal found 15/12£585

Fri 6/319:15MAN - SEA

2 stops34h 37mScandinavian Airlines

Wed 11/311:46SEA - MAN

2 stops38h 44mScandinavian Airlines

Deal found 14/12£591

Wed 28/109:20LCY - SEA

2 stops19h 52mSWISS

Wed 4/210:58SEA - LCY

2 stops41h 57mSWISS

Deal found 13/12£542

Wed 14/106:50LHR - SEA

2 stops36h 42mUnited Airlines

Thu 1/1005:07SEA - LHR

2 stops20h 28mUnited Airlines

Deal found 15/12£544

Thu 5/218:10STN - SEA

2 stops27h 10mMultiple Airlines

Thu 19/214:00SEA - STN

2 stops25h 10mMultiple Airlines

Deal found 14/12£550

Thu 15/111:55LGW - SEA

1 stop13h 05mIcelandair

Thu 22/119:54SEA - LGW

2 stops31h 01mIcelandair

Deal found 14/12£573

Thu 29/106:05GLA - SEA

1 stop13h 45mDelta

Thu 5/211:25SEA - GLA

2 stops21h 10mDelta

Deal found 14/12£643

Mon 12/117:05LCY - SEA

1 stop26h 45mVirgin Atlantic

Mon 19/115:10SEA - LCY

1 stop18h 10mVirgin Atlantic

Deal found 15/12£585

Wed 21/109:20LCY - SEA

2 stops19h 52mSWISS

Wed 30/914:52SEA - LCY

2 stops18h 23mSWISS

Deal found 15/12£542

Thu 29/106:00BRS - SEA

1 stop13h 50mKLM

Thu 5/215:05SEA - BRS

1 stop17h 50mKLM

Deal found 15/12£660

Direct flights from United Kingdom to Seattle
Explore direct flight options from United Kingdom to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 December 2025.

Thu 5/312:20LHR - SEA

Nonstop10h 25mVirgin Atlantic

Tue 10/317:40SEA - LHR

Nonstop9h 50mVirgin Atlantic

Deal found 15/12£498

Tue 24/209:25LHR - SEA

Nonstop10h 05mFinnair

Tue 3/313:25SEA - LHR

Nonstop9h 35mFinnair

Deal found 15/12£510

Fri 13/209:25LHR - SEA

Nonstop10h 05mBritish Airways

Thu 19/218:50SEA - LHR

Nonstop9h 30mBritish Airways

Deal found 15/12£525

Tue 3/309:25LHR - SEA

Nonstop10h 05mBritish Airways

Mon 9/319:50SEA - LHR

Nonstop9h 30mBritish Airways

Deal found 15/12£528

Wed 18/314:55LHR - SEA

Nonstop10h 00mFinnair

Sun 29/320:20SEA - LHR

Nonstop9h 25mFinnair

Deal found 14/12£532

Sun 15/312:20LHR - SEA

Nonstop10h 20mVirgin Atlantic

Sat 28/320:25SEA - LHR

Nonstop9h 50mVirgin Atlantic

Deal found 15/12£535

Wed 8/409:50LHR - SEA

Nonstop9h 45mBritish Airways

Wed 15/420:20SEA - LHR

Nonstop9h 25mBritish Airways

Deal found 14/12£537

Fri 20/309:25LHR - SEA

Nonstop10h 05mBritish Airways

Wed 15/413:35SEA - LHR

Nonstop9h 15mBritish Airways

Deal found 15/12£538

Tue 3/214:55LHR - SEA

Nonstop10h 00mFinnair

Thu 5/318:50SEA - LHR

Nonstop9h 30mFinnair

Deal found 14/12£541

Thu 5/214:55LHR - SEA

Nonstop10h 00mBritish Airways

Wed 18/218:50SEA - LHR

Nonstop9h 30mBritish Airways

Deal found 14/12£542

Last-minute flights from United Kingdom to Seattle
Discover last-minute flight deals from United Kingdom to Seattle. Data last updated 16 December 2025 and is based on user searches.

Tue 23/1220:35LHR - SEA

1 stop28h 25mIcelandair

Tue 6/114:35SEA - LHR

1 stop20h 55mIcelandair

Deal found 15/12£514

Mon 12/114:50LHR - SEA

2 stops26h 25mMultiple Airlines

Mon 19/115:10SEA - LHR

1 stop13h 40mMultiple Airlines

Deal found 15/12£500

Mon 12/114:50LHR - SEA

1 stop31h 30mWestJet

Mon 19/111:55SEA - LHR

2 stops16h 55mWestJet

Deal found 15/12£506

Thu 15/114:50LHR - SEA

2 stops27h 32mWestJet

Thu 22/115:10SEA - LHR

1 stop13h 40mWestJet

Deal found 14/12£472

Sat 17/114:50LHR - SEA

2 stops27h 32mWestJet

Fri 23/115:10SEA - LHR

1 stop13h 40mWestJet

Deal found 15/12£464

Wed 21/106:35LHR - SEA

1 stop14h 45mLufthansa

Wed 30/910:00SEA - LHR

2 stops20h 40mLufthansa

Deal found 15/12£516

Wed 21/120:05LHR - SEA

2 stops33h 07mSWISS

Wed 30/907:00SEA - LHR

2 stops16h 55mSWISS

Deal found 15/12£523

Tue 27/106:35LHR - SEA

2 stops20h 41mMultiple Airlines

Tue 3/215:10SEA - LHR

1 stop13h 40mMultiple Airlines

Deal found 15/12£511

Wed 28/106:30LHR - SEA

2 stops20h 46mMultiple Airlines

Wed 4/215:10SEA - LHR

1 stop13h 40mMultiple Airlines

Deal found 14/12£509

Thu 29/108:15BRS - SEA

2 stops16h 45mMultiple Airlines

Thu 5/214:35SEA - BRS

2 stops19h 35mMultiple Airlines

Deal found 15/12£437

Thu 29/106:40LHR - SEA

2 stops18h 20mMultiple Airlines

Thu 5/214:35SEA - LHR

3 stops22h 15mMultiple Airlines

Deal found 15/12£503

Sat 31/114:50LHR - SEA

1 stop13h 02mMultiple Airlines

Sat 7/311:55SEA - LHR

2 stops16h 55mMultiple Airlines

Deal found 14/12£517

One-way flights from United Kingdom to Seattle
Search for one-way flight options from United Kingdom to Seattle. Find affordable one-way fares based on user searches. Data last updated 16 December 2025.

Wed 14/107:50MAN - SEA

2 stops20h 02mMultiple Airlines

Deal found 15/12£330

Wed 28/116:40BHX - SEA

3 stops49h 53mMultiple Airlines

Deal found 14/12£330

Thu 7/521:40GLA - SEA

3 stops47h 28mMultiple Airlines

Deal found 15/12£342

Fri 3/418:15BRS - SEA

3 stops52h 04mMultiple Airlines

Deal found 13/12£348

Mon 23/212:35GLA - SEA

1 stop12h 25mIcelandair

Deal found 14/12£362

Tue 28/414:20GLA - SEA

1 stop11h 35mIcelandair

Deal found 13/12£373

Sat 31/119:30LHR - SEA

2 stops31h 46mLufthansa

Deal found 15/12£394

Fri 13/206:35LHR - SEA

1 stop14h 45mLufthansa

Deal found 15/12£395

Sat 31/109:00LHR - SEA

2 stops20h 12mSWISS

Deal found 14/12£396

Thu 15/120:50LHR - SEA

3 stops32h 38mMultiple Airlines

Deal found 15/12£396

Thu 19/320:50LTN - SEA

3 stops29h 30mMultiple Airlines

Deal found 15/12£396

Wed 18/321:55LTN - SEA

3 stops52h 25mMultiple Airlines

Deal found 15/12£397

Find flight deals from United Kingdom to Seattle

Round-trip from	£437
One-way from	£330
Popular in	July
Cheapest in	January
Average price	£638
Good round-trip deal	£507 or less
Good one-way deal	£538 or less

29/1-5/2
4 total stops
36h 20m total
United Kingdom to Seattle

Search Deals

14/1
2 total stops
20h 02m total
United Kingdom to Seattle

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£61 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from United Kingdom to Seattle/Tacoma Intl.

Search Deals

Price to beat on a one-way flight from United Kingdom to Seattle/Tacoma Intl.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BristolSeattle

BRS - SEA

BRSSEA

Bristol

Thu 29/1

08:15-17:00

2 stops16h 45m

Seattle/Tacoma Intl

Thu 5/2

14:35-18:10

2 stops19h 35m

£437

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 5/2

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Thu 19/2

14:35-10:55

1 stop12h 20m

£452

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 28/1

09:00-21:12

2 stops20h 12m

Seattle/Tacoma Intl

Wed 4/2

10:58-13:00

2 stops18h 02m

£523

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 10/3

06:30-13:10

1 stop13h 40m

Seattle/Tacoma Intl

Tue 17/3

08:00-07:30

2 stops40h 30m

£528

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 29/1

11:15-17:00

1 stop13h 45m

Seattle/Tacoma Intl

Thu 5/2

14:35-09:55

1 stop11h 20m

£536

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 30/1

06:50-22:43

2 stops23h 53m

Seattle/Tacoma Intl

Sat 31/1

09:00-09:40

2 stops40h 40m

£537

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 29/1

08:20-17:00

2 stops16h 40m

Seattle/Tacoma Intl

Thu 5/2

14:35-15:40

2 stops17h 05m

£539

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 30/1

14:50-10:22

2 stops27h 32m

Seattle/Tacoma Intl

Fri 6/2

11:55-12:50

2 stops16h 55m

£541

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 14/1

09:20-21:12

2 stops19h 52m

Seattle/Tacoma Intl

Thu 1/10

14:52-17:15

2 stops18h 23m

£542

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 28/1

09:20-21:12

2 stops19h 52m

Seattle/Tacoma Intl

Wed 4/2

10:58-12:55

2 stops41h 57m

£542

Flights are sorted by cheapest return flights first.

Deals found on 15/12

Showing 1-10 of 60 results

...

Best time to book a flight from United Kingdom to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from United Kingdom 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.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Seattle

What is the cheapest month to book a flight from United Kingdom to Seattle?

Currently, March is the cheapest month in which you can book a flight from United Kingdom to Seattle (average of £305). Flying from United Kingdom to Seattle in August is currently the most expensive (average of £461). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GB to SEA?

One of the essential ways to save on airfare from United Kingdom to Seattle is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 6% on airfare.

What is the cheapest day to fly from United Kingdom to Seattle?

Travellers seeking maximum savings on their United Kingdom to Seattle flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from United Kingdom to Seattle

The most flights from GB0 to SEA are scheduled on a Tuesday (21 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (11 on average).

How often are flights from the United Kingdom to Seattle delayed?

About 13% of weekly flights between United Kingdom and Seattle have experienced delays in the past year, with the average delay time being 117 minutes.

What is the most punctual flight time for the United Kingdom to Seattle flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Seattle flights?

Over the past year, Delta have had the lowest number of delays on this route, with just 6% of flights being delayed.

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown with KLM, Virgin Atlantic, andAir France from the United Kingdom to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.7

Good

1,430 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

KLM

7.7

Good

1,430 reviews

KLM

7.7

Good

1,430 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Virgin Atlantic

7.5

Good

675 reviews

KLM

7.7

Good

1,430 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Air France

7.4

Good

1,506 reviews

KLM

7.7

Good

1,430 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Icelandair

7.0

Good

590 reviews

KLM

7.7

Good

1,430 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

British Airways

6.7

Okay

7,580 reviews

KLM

7.7

Good

1,430 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

What airport do you fly into for flights to Seattle from United Kingdom?
For a flight from United Kingdom to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.
How long is the flight from United Kingdom to Seattle?
A quick flight from United Kingdom to Seattle can take about 13h 05m. Icelandair provides one of the quickest options available for as low as £452. Airlines will cover a distance of 4807 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from United Kingdom to Seattle one-way?
For one-way options, check prices for WestJet. According to our data, you can fly for as low as £253. Users have also found prices from £345 and £347 on British Airways and Virgin Atlantic, respectively.
What are the most popular routes from United Kingdom to Seattle?
The most popular flight routes from United Kingdom to Seattle are London Heathrow - Seattle/Tacoma Intl, London Gatwick - Seattle/Tacoma Intl and London City - Seattle/Tacoma Intl.
What are the most reliable airlines from United Kingdom to Seattle?
The top 3 most reliable airlines when flying from United Kingdom to Seattle are Scandinavian Airlines (95%), Air France (88%) and Delta (85%).
What are the cheapest flights from United Kingdom to Seattle?
Looking for the cheapest flight from United Kingdom to Seattle? While on average our users pay £1,737, our data indicates the cheapest price to be £413. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £354.
Can I find deals for flights from United Kingdom to Seattle that include hotel bookings?
Yes. In addition to deals on United Kingdom to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from United Kingdom to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Seattle.
Can I find deals for business class flights from United Kingdom to Seattle?
Yes. Cheapflights offers flight deals from United Kingdom to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from United Kingdom to Seattle?
Currently, March is the cheapest month in which you can book a flight from United Kingdom to Seattle (average of £305). Flying from United Kingdom to Seattle in August is currently the most expensive (average of £461). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Tacoma

Leavenworth

SeaTac

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from United Kingdom to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£326	Average£549	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£364	Average£569	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Air France	Cheapest£386	Average£714	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Lufthansa	Cheapest£393	Average£571	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
KLM	Cheapest£399	Average£606	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Finnair	Cheapest£399	Average£559	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£407	Average£632	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£419	Average£775	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Virgin Atlantic	Cheapest£442	Average£650	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Scandinavian Airlines	Cheapest£443	Average£640	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights

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Cheap flights from the United Kingdom to Seattle from £330

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from United Kingdom to Seattle

Cheapest flights from United Kingdom to SeattleExplore the most affordable flight options available from United Kingdom to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 December 2025.

Explore the most affordable flight options available from United Kingdom to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 December 2025.

Find flight deals from United Kingdom to Seattle

Keep the following information in mind while searching for United Kingdom to Seattle flight deals. Data was last updated 16 December 2025.

Round-trip from

One-way from

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Use the filters below to find and compare flights from the United Kingdom to Seattle that are best for you.

Best time to book a flight from United Kingdom to Seattle

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

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Seattle

What is the cheapest month to book a flight from United Kingdom to Seattle?

What is the cheapest time of day to fly from GB to SEA?

Find hourly flight availability from United Kingdom to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 December 2025.

What is the cheapest day to fly from United Kingdom to Seattle?

Use this chart to determine the cheapest time to fly return from United Kingdom to Seattle. Price data was last updated on 16 December 2024.

Weekly flight availability from United Kingdom to Seattle

How often are flights from the United Kingdom to Seattle delayed?

What is the most punctual flight time for the United Kingdom to Seattle flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on the United Kingdom to Seattle flights?

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown with KLM, Virgin Atlantic, andAir France from the United Kingdom to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Seattle from United Kingdom?

How long is the flight from United Kingdom to Seattle?

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

What are the most popular routes from United Kingdom to Seattle?

What are the most reliable airlines from United Kingdom to Seattle?

What are the cheapest flights from United Kingdom to Seattle?

Can I find deals for flights from United Kingdom to Seattle that include hotel bookings?

How can I find direct flights from United Kingdom to Seattle?

Can I find deals for business class flights from United Kingdom to Seattle?

What is the cheapest month to book a flight from United Kingdom to Seattle?

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Alternative routes for United Kingdom to Seattle

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Top 10 airlines flying from United Kingdom to Seattle

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How does Cheapflights help users find flights from United Kingdom to Seattle?

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Seattle?

Can Cheapflights find flights from United Kingdom to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from United Kingdom to Seattle become cheaper?

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Cheapest flights from United Kingdom to Seattle
Explore the most affordable flight options available from United Kingdom to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 December 2025.