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Cheap flights from London City Airport to Seattle from £405

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 18/6. Fares are subject to change and may not be available on all flights or dates of travel.
LCY — SEA
20 Apr — 27 Apr1
1 adult

Cheap flight deals from London City to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from London City (LCY) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 April 2025.

Round-trip from

£486

One-way from

£405

Popular in

August

Cheapest in

January

Average price

£539
SWISS
  • SWISS
  • 30/4-7/5
  • 4 total stops
  • 39h 55m total
  • London to Seattle
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18/6
  • 18/6
  • 2 total stops
  • 19h 23m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£85 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from London City to Seattle

Cheapest flights from London City to Seattle
Explore the most affordable flight options available from London City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Wed 30/409:25LCY - SEA
2 stops19h 50mSWISS
Wed 7/514:40SEA - LCY
2 stops20h 05mSWISS
Deal found 14/4£486
Tue 13/509:05LCY - SEA
1 stop15h 54mBritish Airways
Tue 20/518:45SEA - LCY
1 stop14h 45mBritish Airways
Deal found 14/4£495
Tue 6/508:40LCY - SEA
2 stops20h 10mVirgin Atlantic
Mon 12/518:07SEA - LCY
1 stop14h 33mVirgin Atlantic
Deal found 14/4£528
Wed 30/408:45LCY - SEA
2 stops18h 16mMultiple Airlines
Wed 7/514:15SEA - LCY
1 stop18h 10mMultiple Airlines
Deal found 14/4£533
Mon 8/908:45LCY - SEA
2 stops19h 57mLufthansa
Fri 26/908:00SEA - LCY
2 stops49h 15mLufthansa
Deal found 14/4£563
Mon 5/511:40LCY - SEA
1 stop12h 17mDelta
Mon 20/1017:40SEA - LCY
1 stop15h 00mDelta
Deal found 14/4£596
Mon 21/410:00LCY - SEA
1 stop14h 00mKLM
Mon 28/418:10SEA - LCY
1 stop14h 30mKLM
Deal found 14/4£609
Tue 22/416:50LCY - SEA
2 stops35h 55mITA Airways
Tue 29/407:23SEA - LCY
2 stops24h 52mITA Airways
Deal found 14/4£655
Fri 2/506:45LCY - SEA
1 stop18h 14mAer Lingus
Sun 4/523:59SEA - LCY
2 stops26h 21mAer Lingus
Deal found 14/4£712

Cheapflights Fare Finder

Customise your flight search to find flights from London City to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 April 2025.
Use the filters below to find and compare flights from London City Airport to Seattle that are best for you.

Fly from

London City

Fly to

Seattle

Route

Depart

Return

Price

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 30/4

09:25-21:15

2 stops19h 50m

Seattle/Tacoma Intl

Wed 7/5

14:40-18:45

2 stops20h 05m

£486

LondonSeattle

LCY - SEA

LCYSEA

London City

Tue 13/5

09:05-16:59

1 stop15h 54m

Seattle/Tacoma Intl

Tue 20/5

18:45-17:30

1 stop14h 45m

£495

LondonSeattle

LCY - SEA

LCYSEA

London City

Tue 6/5

08:40-20:50

2 stops20h 10m

Seattle/Tacoma Intl

Mon 12/5

18:07-16:40

1 stop14h 33m

£528

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 1/9

08:45-20:42

2 stops19h 57m

Seattle/Tacoma Intl

Tue 9/9

11:05-16:25

2 stops21h 20m

£530

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 8/9

08:45-20:42

2 stops19h 57m

Seattle/Tacoma Intl

Fri 26/9

08:00-17:15

2 stops49h 15m

£563

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 5/5

11:40-15:57

1 stop12h 17m

Seattle/Tacoma Intl

Tue 21/10

17:40-16:40

1 stop15h 00m

£596

LondonSeattle

LCY - SEA

LCYSEA

London City

Fri 30/5

10:00-15:57

1 stop13h 57m

Seattle/Tacoma Intl

Fri 6/6

13:55-11:40

1 stop13h 45m

£657

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 30/4

06:45-16:59

1 stop18h 14m

Seattle/Tacoma Intl

Wed 7/5

06:20-08:30

2 stops18h 10m

£669

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 18/6

09:05-20:28

2 stops19h 23m

£405

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 15/5

19:10-12:25

1 stop25h 15m

£481

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 16 results
1
2

Best time to book a flight from London City to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from London City 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 London City Airport to Seattle

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

Find hourly flight availability from London City 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 15 April 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London City Airport to Seattle as you normally would.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

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.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 15 April 2025.
Read reviews from past customers who have flown Delta, KLM and SWISS from London to Seattle. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,917 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,917 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,578 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.0
Good
1,063 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from London City 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 London City?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from London City to Seattle. 0 airlines have flights to Seattle/Tacoma Intl from London City on a regular basis. Booking flights from London City to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from London City per day.

  • What are the cheapest airlines flying from London City Airport to Seattle round-trip?

    Our cheapest airline available from London City Airport to Seattle is SWISS. Our recent data shows that you can find tickets from as low as £486 on this airline. Additional options worth looking into are British Airways and Virgin Atlantic, starting at £495 and £528 round-trip.

  • What are the cheapest airlines to fly from London City Airport to Seattle one-way?

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at £481. SWISS flights start at £507 while deals on British Airways start at £543 one-way.

  • Can I find deals for flights from London City to Seattle that include hotel bookings?

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

  • How can I find direct flights from London City to Seattle?

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

  • Can I find deals for business class flights from London City to Seattle?

    Yes. Cheapflights offers flight deals from London City 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 London City Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from London City Airport to Seattle (average of £622). Flying from London City Airport to Seattle in July is currently the most expensive (average of £946). 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

Travelling to a place near London City Airport?

Book flights to London City Airport if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell

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Can Cheapflights find flights from London City to Seattle with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London City to Seattle, users can toggle the no change fees filter when performing a flight search.

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