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 £493 on this airline. Additional options worth looking into are Lufthansa and Virgin Atlantic, starting at £543 and £553 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 £318. Users have also found prices from £321 and £370 on Lufthansa and Aer Lingus, 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 £619, or £722 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, January can be a great choice for travel to London City Airport. Flights to London City Airport from Seattle in January are about £575 on average during January, but can be found for as low as £365.

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.

£275+ Flights from Seattle to London City Airport

Cheap flight deals from Seattle to London City

Round-trip from	£493
One-way from	£275
Popular in	June
Cheapest in	January
Average price	£757

SWISS
16/9-7/10
4 total stops
50h 17m total
Seattle to London

Search Deals

7/9
3 total stops
29h 15m total
Seattle to London

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£79 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 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 13 June 2025.

Tue 16/914:29SEA - LCY

2 stops19h 01mSWISS

Tue 7/1019:20LCY - SEA

2 stops31h 16mSWISS

Deal found 11/6£493

Wed 8/1014:20SEA - LCY

1 stop18h 05mMultiple Airlines

Wed 22/1009:25LCY - SEA

2 stops17h 11mMultiple Airlines

Deal found 11/6£525

Tue 16/914:20SEA - LCY

1 stop18h 05mLufthansa

Tue 23/919:10LCY - SEA

1 stop24h 45mLufthansa

Deal found 11/6£543

Wed 6/814:10SEA - LCY

1 stop21h 30mVirgin Atlantic

Fri 22/809:20LCY - SEA

2 stops21h 05mVirgin Atlantic

Deal found 11/6£553

Wed 27/819:35SEA - LCY

1 stop13h 55mAer Lingus

Fri 12/909:05LCY - SEA

1 stop16h 45mAer Lingus

Deal found 12/6£566

Fri 10/1013:55SEA - LCY

1 stop13h 45mKLM

Thu 23/1009:20LCY - SEA

1 stop14h 45mKLM

Deal found 11/6£581

Wed 1/1019:35SEA - LCY

1 stop13h 55mBritish Airways

Fri 10/1009:05LCY - SEA

1 stop16h 45mBritish Airways

Deal found 11/6£620

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 13 June 2025.

Tue 16/914:29SEA - LCY

2 stops19h 01mSWISS

Tue 7/1019:20LCY - SEA

2 stops31h 16mSWISS

Deal found 11/6£493

Wed 8/1014:20SEA - LCY

1 stop18h 05mMultiple Airlines

Wed 22/1009:25LCY - SEA

2 stops17h 11mMultiple Airlines

Deal found 11/6£525

Tue 16/914:20SEA - LCY

1 stop18h 05mLufthansa

Tue 23/919:10LCY - SEA

1 stop24h 45mLufthansa

Deal found 11/6£543

Wed 6/814:10SEA - LCY

1 stop21h 30mVirgin Atlantic

Fri 22/809:20LCY - SEA

2 stops21h 05mVirgin Atlantic

Deal found 11/6£553

Wed 27/819:35SEA - LCY

1 stop13h 55mAer Lingus

Fri 12/909:05LCY - SEA

1 stop16h 45mAer Lingus

Deal found 12/6£566

Fri 10/1013:55SEA - LCY

1 stop13h 45mKLM

Fri 24/1009:20LCY - SEA

1 stop14h 45mKLM

Deal found 11/6£581

Wed 1/1019:35SEA - LCY

1 stop13h 55mBritish Airways

Fri 10/1009:05LCY - SEA

1 stop16h 45mBritish Airways

Deal found 11/6£620

Last-minute flights from Seattle to London City
Discover last-minute flight deals from Seattle to London City. Data last updated 13 June 2025 and is based on user searches.

Wed 18/610:00SEA - LCY

2 stops22h 25mMultiple Airlines

Wed 25/608:45LCY - SEA

2 stops17h 51mMultiple Airlines

Deal found 11/6£957

Wed 18/617:35SEA - LCY

1 stop15h 05mDelta

Fri 1/807:45LCY - SEA

1 stop16h 10mDelta

Deal found 12/6£3,945

Thu 19/614:50SEA - LCY

2 stops18h 25mSWISS

Sun 27/718:05LCY - SEA

1 stop28h 50mSWISS

Deal found 11/6£1,303

Thu 19/614:15SEA - LCY

1 stop18h 10mLufthansa

Thu 31/708:45LCY - SEA

1 stop35h 10mLufthansa

Deal found 11/6£1,346

Fri 20/606:00SEA - LCY

2 stops18h 10mVirgin Atlantic

Wed 30/707:45LCY - SEA

1 stop16h 05mVirgin Atlantic

Deal found 11/6£1,740

Sun 22/619:35SEA - LCY

1 stop13h 55mAer Lingus

Thu 31/720:30LCY - SEA

1 stop29h 20mAer Lingus

Deal found 11/6£1,049

Sun 22/609:05SEA - LCY

2 stops14h 10mKLM

Wed 23/710:00LCY - SEA

1 stop13h 50mKLM

Deal found 12/6£1,145

Sun 22/606:24SEA - LCY

2 stops28h 01mBritish Airways

Wed 23/715:30LCY - SEA

2 stops38h 13mBritish Airways

Deal found 12/6£1,208

Mon 23/610:25SEA - LCY

2 stops39h 40mITA Airways

Mon 30/616:50LCY - SEA

2 stops35h 45mITA Airways

Deal found 12/6£1,932

Sat 5/717:35SEA - LCY

1 stop29h 40mDelta

Wed 16/710:00LCY - SEA

1 stop13h 50mDelta

Deal found 11/6£768

Tue 8/719:35SEA - LCY

1 stop18h 05mBritish Airways

Tue 7/1009:05LCY - SEA

1 stop16h 45mBritish Airways

Deal found 11/6£726

Mon 14/716:25SEA - LCY

1 stop18h 20mSWISS

Mon 11/809:25LCY - SEA

1 stop13h 30mSWISS

Deal found 11/6£515

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 13 June 2025.

Sun 7/923:30SEA - LCY

3 stops29h 15mMultiple Airlines

Deal found 12/6£275

Tue 2/914:29SEA - LCY

2 stops20h 16mSWISS

Deal found 11/6£318

Wed 8/1014:20SEA - LCY

1 stop18h 05mLufthansa

Deal found 12/6£321

Wed 12/1120:05SEA - LCY

1 stop28h 30mAer Lingus

Deal found 12/6£370

Fri 19/913:55SEA - LCY

1 stop13h 45mKLM

Deal found 11/6£397

Wed 12/1120:05SEA - LCY

1 stop14h 30mBritish Airways

Deal found 11/6£399

Thu 18/920:15SEA - LCY

2 stops31h 25mDelta

Deal found 11/6£421

Thu 10/700:20SEA - LCY

2 stops27h 20mUnited Airlines

Deal found 12/6£444

Fri 4/706:00SEA - LCY

2 stops17h 15mVirgin Atlantic

Deal found 10/6£465

Tue 12/810:15SEA - LCY

2 stops39h 50mITA Airways

Deal found 12/6£534

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 16/9

14:29-17:30

2 stops19h 01m

London City

Tue 7/10

19:20-18:36

2 stops31h 16m

£493

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 8/10

14:20-16:25

1 stop18h 05m

London City

Wed 22/10

09:25-18:36

2 stops17h 11m

£525

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 16/9

14:20-16:25

1 stop18h 05m

London City

Tue 23/9

19:10-11:55

1 stop24h 45m

£543

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 6/8

14:10-19:40

1 stop21h 30m

London City

Fri 22/8

09:20-22:25

2 stops21h 05m

£553

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 27/8

19:35-17:30

1 stop13h 55m

London City

Fri 12/9

09:05-17:50

1 stop16h 45m

£566

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Fri 10/10

13:55-11:40

1 stop13h 45m

London City

Thu 23/10

09:20-16:05

1 stop14h 45m

£581

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 1/10

19:35-17:30

1 stop13h 55m

London City

Fri 10/10

09:05-17:50

1 stop16h 45m

£620

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 7/9

23:30-12:45

3 stops29h 15m

£275

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 2/9

14:29-18:45

2 stops20h 16m

£318

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 8/10

14:20-16:25

1 stop18h 05m

£321

Flights are sorted by cheapest return flights first.

Deals found on 12/6

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

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,946 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

SWISS

7.5

Good

1,624 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Virgin Atlantic

7.4

Good

652 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 £493 on this airline. Additional options worth looking into are Lufthansa and Virgin Atlantic, starting at £543 and £553 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 £318. Users have also found prices from £321 and £370 on Lufthansa and Aer Lingus, 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

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Folkestone

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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!

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Cheap flights from Seattle to London City Airport from £275

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 7/9. 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 13 June 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 13 June 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?

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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 13 June 2025.