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

Our cheapest airline available from Seattle to London City Airport is SWISS. Our recent data shows that you can find tickets from as low as £495 on this airline. Additional options worth looking into are Delta and Virgin Atlantic, starting at £510 and £511 round-trip.

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

For one-way options, check prices for SWISS. According to our data, you can fly for as low as £321. Users have also found prices from £331 and £332 on KLM and Lufthansa, respectively.

What is the cheapest month to book a flight from Seattle to London City Airport?

Currently, February is the cheapest month in which you can book a flight from Seattle to London City Airport (average of £161). Flying from Seattle to London City Airport in August is currently the most expensive (average of £214). 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.

How far in advance should I book a flight from Seattle to London City Airport?

Travelers have found it’s best to book a flight 35 days in advance to save up to 38% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 35 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to London City Airport 1-2 weeks in advance for as low as £647, or £731 for flights within the next 24 hours.

What is the cheapest month to fly from Seattle to London City Airport?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, October can be a great choice for travel to London City Airport. Flights to London City Airport from Seattle in October are about £604 on average during October, but can be found for as low as £423.

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

When flying from Seattle to London City Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Seattle to London City?

For a flight from Seattle to London City, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 outbound flights to London City per day. 0 airlines have flights to London City from Seattle/Tacoma Intl on a regular basis.

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

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

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

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

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

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

£274+ Flights from Seattle to London City Airport

Cheap flight deals from Seattle to London City

Round-trip from	£495
One-way from	£274
Popular in	June
Cheapest in	October
Average price	£520

SWISS
6/5-13/5
4 total stops
35h 58m total
Seattle to London

Search Deals

22/7
3 total stops
21h 55m total
Seattle to London

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£103 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Seattle to London City

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

Tue 6/514:40SEA - LCY

2 stops18h 50mSWISS

Tue 13/509:25LCY - SEA

2 stops17h 08mSWISS

Deal found 14/4£495

Wed 7/514:15SEA - LCY

1 stop18h 10mMultiple Airlines

Wed 14/513:05LCY - SEA

2 stops37h 28mMultiple Airlines

Deal found 14/4£498

Wed 23/418:10SEA - LCY

1 stop14h 30mDelta

Wed 7/510:00LCY - SEA

1 stop13h 57mDelta

Deal found 14/4£510

Tue 13/513:55SEA - LCY

1 stop19h 25mVirgin Atlantic

Tue 20/517:50LCY - SEA

1 stop25h 50mVirgin Atlantic

Deal found 15/4£511

Sun 27/418:10SEA - LCY

1 stop14h 30mKLM

Thu 15/510:00LCY - SEA

1 stop13h 57mKLM

Deal found 14/4£525

Wed 24/914:20SEA - LCY

1 stop18h 05mLufthansa

Mon 6/1019:10LCY - SEA

1 stop24h 45mLufthansa

Deal found 14/4£555

Mon 28/418:45SEA - LCY

1 stop14h 45mAer Lingus

Tue 13/509:05LCY - SEA

1 stop15h 54mAer Lingus

Deal found 14/4£601

Mon 3/1120:00SEA - LCY

1 stop13h 30mBritish Airways

Wed 12/1106:50LCY - SEA

1 stop19h 25mBritish Airways

Deal found 14/4£606

Best flights from Seattle to London City
Discover carefully curated flight deals from Seattle to London City that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 April 2025.

Tue 6/514:40SEA - LCY

2 stops18h 50mSWISS

Tue 13/509:25LCY - SEA

2 stops17h 08mSWISS

Deal found 14/4£495

Wed 7/514:15SEA - LCY

1 stop18h 10mMultiple Airlines

Wed 14/513:05LCY - SEA

2 stops37h 28mMultiple Airlines

Deal found 14/4£498

Wed 7/514:10SEA - LCY

1 stop18h 30mDelta

Wed 14/507:45LCY - SEA

1 stop16h 12mDelta

Deal found 14/4£510

Tue 13/513:55SEA - LCY

1 stop19h 25mVirgin Atlantic

Tue 20/517:50LCY - SEA

1 stop25h 50mVirgin Atlantic

Deal found 15/4£511

Sun 27/418:10SEA - LCY

1 stop14h 30mKLM

Thu 15/510:00LCY - SEA

1 stop13h 57mKLM

Deal found 14/4£525

Wed 24/914:20SEA - LCY

1 stop18h 05mLufthansa

Mon 6/1019:10LCY - SEA

1 stop24h 45mLufthansa

Deal found 14/4£555

Mon 28/418:45SEA - LCY

1 stop14h 45mAer Lingus

Tue 13/509:05LCY - SEA

1 stop15h 54mAer Lingus

Deal found 14/4£601

Tue 5/818:45SEA - LCY

1 stop18h 55mBritish Airways

Tue 19/809:05LCY - SEA

1 stop15h 54mBritish Airways

Deal found 14/4£607

Last-minute flights from Seattle to London City
Discover last-minute flight deals from Seattle to London City. Data last updated 15 April 2025 and is based on user searches.

Mon 21/414:30SEA - LCY

2 stops34h 20mMultiple Airlines

Tue 6/509:25LCY - SEA

3 stops23h 31mMultiple Airlines

Deal found 14/4£759

Tue 22/410:50SEA - LCY

2 stops38h 00mSWISS

Thu 1/509:25LCY - SEA

2 stops21h 17mSWISS

Deal found 14/4£503

Tue 22/418:45SEA - LCY

1 stop14h 45mBritish Airways

Tue 29/406:45LCY - SEA

1 stop18h 14mBritish Airways

Deal found 14/4£633

Tue 22/423:59SEA - LCY

2 stops26h 21mAer Lingus

Tue 29/406:45LCY - SEA

1 stop18h 14mAer Lingus

Deal found 14/4£643

Tue 22/422:59SEA - LCY

2 stops33h 16mITA Airways

Wed 30/416:50LCY - SEA

2 stops35h 13mITA Airways

Deal found 14/4£1,722

Wed 23/418:10SEA - LCY

1 stop14h 30mDelta

Wed 7/510:00LCY - SEA

1 stop13h 57mDelta

Deal found 14/4£510

Wed 23/418:10SEA - LCY

1 stop14h 30mKLM

Wed 7/510:00LCY - SEA

1 stop13h 57mKLM

Deal found 15/4£527

Fri 25/406:00SEA - LCY

2 stops18h 10mVirgin Atlantic

Mon 28/408:40LCY - SEA

1 stop15h 20mVirgin Atlantic

Deal found 14/4£1,087

Sun 27/418:10SEA - LCY

1 stop14h 30mKLM

Thu 15/510:00LCY - SEA

1 stop13h 57mKLM

Deal found 14/4£525

Mon 28/418:45SEA - LCY

1 stop14h 45mAer Lingus

Tue 13/509:05LCY - SEA

1 stop15h 54mAer Lingus

Deal found 14/4£601

Mon 5/518:45SEA - LCY

1 stop18h 05mBritish Airways

Wed 21/506:45LCY - SEA

1 stop18h 14mBritish Airways

Deal found 13/4£620

Tue 6/514:40SEA - LCY

2 stops18h 50mSWISS

Tue 13/509:25LCY - SEA

2 stops17h 08mSWISS

Deal found 14/4£495

One-way flights from Seattle to London City
Search for one-way flight options from Seattle to London City. Find affordable one-way fares based on user searches. Data last updated 15 April 2025.

Tue 22/715:45SEA - LCY

3 stops21h 55mMultiple Airlines

Deal found 14/4£274

Tue 29/410:50SEA - LCY

2 stops23h 55mSWISS

Deal found 14/4£321

Sun 21/917:40SEA - LCY

1 stop15h 00mKLM

Deal found 15/4£331

Tue 5/814:20SEA - LCY

1 stop20h 15mLufthansa

Deal found 15/4£332

Sun 27/406:20SEA - LCY

2 stops18h 30mDelta

Deal found 13/4£334

Sat 20/911:05SEA - LCY

3 stops41h 25mUnited Airlines

Deal found 14/4£346

Mon 5/518:45SEA - LCY

2 stops17h 40mBritish Airways

Deal found 13/4£407

Wed 2/718:45SEA - LCY

1 stop14h 45mAer Lingus

Deal found 14/4£467

Fri 25/406:05SEA - LCY

2 stops18h 05mVirgin Atlantic

Deal found 14/4£656

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to London City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 6/5

14:40-17:30

2 stops18h 50m

London City

Tue 13/5

09:25-18:33

2 stops17h 08m

£495

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 7/5

14:15-16:25

1 stop18h 10m

London City

Wed 14/5

13:05-18:33

2 stops37h 28m

£498

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 7/5

14:10-16:40

1 stop18h 30m

London City

Wed 14/5

07:45-15:57

1 stop16h 12m

£510

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 13/5

13:55-17:20

1 stop19h 25m

London City

Tue 20/5

17:50-11:40

1 stop25h 50m

£511

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 27/4

18:10-16:40

1 stop14h 30m

London City

Thu 15/5

10:00-15:57

1 stop13h 57m

£525

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 24/9

14:20-16:25

1 stop18h 05m

London City

Mon 6/10

19:10-11:55

1 stop24h 45m

£555

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 28/4

18:45-17:30

1 stop14h 45m

London City

Tue 13/5

09:05-16:59

1 stop15h 54m

£601

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 5/8

18:45-21:40

1 stop18h 55m

London City

Tue 19/8

09:05-16:59

1 stop15h 54m

£607

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 22/7

15:45-21:40

3 stops21h 55m

£274

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 29/4

10:50-18:45

2 stops23h 55m

£321

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 17 results

Best time to book a flight from Seattle to London City

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

Rainfall in London City by month

In terms of precipitation, rainfall in London City Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London City Airport when rainfall is around 40.0 mm.

Temperature in London City by month

If weather is an important factor for your trip to London City Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London City

Read reviews from past customers who have flown Delta, KLM and SWISS from Seattle to London. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,916 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,323 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,578 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,656 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic

7.4

Good

642 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from Seattle to London City?
For a flight from Seattle to London City, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 outbound flights to London City per day. 0 airlines have flights to London City from Seattle/Tacoma Intl on a regular basis.
What are the cheapest airlines flying from Seattle to London City Airport round-trip?
Our cheapest airline available from Seattle to London City Airport is SWISS. Our recent data shows that you can find tickets from as low as £495 on this airline. Additional options worth looking into are Delta and Virgin Atlantic, starting at £510 and £511 round-trip.
What are the cheapest airlines to fly from Seattle to London City Airport one-way?
For one-way options, check prices for SWISS. According to our data, you can fly for as low as £321. Users have also found prices from £331 and £332 on KLM and Lufthansa, respectively.
Can I find deals for flights from Seattle to London City that include hotel bookings?
Yes. In addition to deals on Seattle to London City flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Seattle to London City?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to London City.
Can I find deals for business class flights from Seattle to London City?
Yes. Cheapflights offers flight deals from Seattle to London City 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 Seattle to London City Airport?
Currently, February is the cheapest month in which you can book a flight from Seattle to London City Airport (average of £161). Flying from Seattle to London City Airport in August is currently the most expensive (average of £214). 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

Hounslow

Deal

Milton Keynes

Gatwick

Luton

Slough

Croydon

Eastbourne

Wembley

Hayes

Crawley

Southend-on-Sea

Maidstone

Ipswich

Southall

Ilford

Winchester

Folkestone

Dartford

Watford

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to London City?

When you search for this flight from Seattle to London City, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to London City?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to London City for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to London City from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to London City become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Seattle to London City Airport from £274

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 22/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to London City

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to London City

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

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

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to London City Airport that are best for you.

Best time to book a flight from Seattle to London City

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

Cheapflights Insights

Everything you need to know about your flight from Seattle to London City Airport

Rainfall in London City by month

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

Temperature in London City by month

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

Reviews of airlines servicing London City

Read reviews from past customers who have flown Delta, KLM and SWISS from Seattle to London. You can also see how each airline stacks up 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 Seattle to London City. 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 from for flights from Seattle to London City?

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

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

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

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

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

What is the cheapest month to book a flight from Seattle to London City Airport?

Travelling to a place near Seattle?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to London City

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to London City?

Why should you use Cheapflights to find cheap flight tickets from Seattle to London City?

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

Can Cheapflights notify me if prices for flights from Seattle to London City become cheaper?

100% Free

Book with Flexibility

Travel Smart

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