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$224+ Cheap flights from Sioux Falls (FSD) to London (LON)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LON
Dec 25 — Jan 11
Thu 12/25
Thu 1/1
1 adult, Economy
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Find flight deals from Sioux Falls to London

Cheapest flights from Sioux Falls to London
Explore the most affordable flight options available from Sioux Falls to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 25, 2025.

This United Airlines deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:16 pmFSD - LHR
1 stop29h 39mUnited Airlines
Thu 1/810:25 amLHR - FSD
1 stop17h 25mUnited Airlines
Deal found 11/24$802
This Delta deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/234:25 pmFSD - LHR
1 stop32h 40mDelta
Wed 1/710:45 amLHR - FSD
1 stop18h 25mDelta
Deal found 11/24$811
This United Airlines deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:16 pmFSD - LHR
1 stop29h 39mUnited Airlines
Wed 1/711:10 amLHR - FSD
2 stops29h 37mUnited Airlines
Deal found 11/24$814
This United Airlines deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:00 amFSD - LHR
2 stops17h 10mUnited Airlines
Sun 12/76:50 amLHR - FSD
2 stops16h 43mUnited Airlines
Deal found 11/23$844
This Cheapflightsfares deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2711:17 amFSD - LHR
1 stop12h 38mLufthansa
Tue 12/25:30 pmLHR - FSD
2 stops34h 21mLufthansa
Deal found 11/23$845
This Lufthansa deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:55 pmFSD - LHR
1 stop13h 45mLufthansa
Sun 12/711:35 amLHR - FSD
1 stop14h 46mLufthansa
Deal found 11/23$872
This KAYAK deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2311:27 amFSD - LHR
2 stops40h 13mLufthansa
Thu 1/87:40 amLHR - FSD
2 stops18h 44mLufthansa
Deal found 11/24$878
This Cheapflightsfares deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2711:17 amFSD - LCY
2 stops16h 03mLufthansa
Tue 12/25:15 pmLCY - FSD
2 stops34h 36mLufthansa
Deal found 11/23$886
This United Airlines deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/148:00 amFSD - LHR
1 stop17h 55mUnited Airlines
Sat 12/277:40 amLHR - FSD
1 stop20h 16mUnited Airlines
Deal found 11/23$946
This KAYAK deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:16 pmFSD - LHR
1 stop29h 39mLufthansa
Tue 1/68:15 pmLHR - FSD
2 stops27h 03mLufthansa
Deal found 11/24$948
This Kiwi.com deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/145:55 pmFSD - LGW
1 stop34h 05mMultiple Airlines
Mon 12/292:00 pmLGW - FSD
1 stop25h 31mMultiple Airlines
Deal found 11/24$985
This Kiwi.com deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:46 amFSD - LGW
1 stop18h 14mMultiple Airlines
Thu 1/82:00 pmLGW - FSD
2 stops34h 11mMultiple Airlines
Deal found 11/24$1,059

Cheap flight deals from Sioux Falls to London

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to London (LON). 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 November 25, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$557
(Kiwi.com)

One-way from

$224
(KLM)

Popular in

January

Cheapest in

May

Average price

$922
Provider with most accurate pricing for Sioux Falls Joe Foss Field-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-London (LON) flights.
Search Deals
From Sioux Falls Joe Foss Field to London (LON)
Search Deals
One-way flight from Sioux Falls Joe Foss Field to London (LON)
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($271 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($91 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls to London 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 2,558,603 searches. Data last updated November 25, 2025.
Use the filters below to find and compare flights from Sioux Falls to London that are best for you.

Fly from

Sioux Falls

Fly to

London

Route

Depart

Return

Price

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 1/9

1:40 pm-9:40 am

1 stop14h 00m

London Heathrow

Fri 1/16

7:25 am-8:24 pm

2 stops18h 59m

$590

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Thu 1/8

3:11 pm-7:55 am

1 stop10h 44m

London Heathrow

Thu 1/15

11:10 am-9:50 pm

2 stops16h 40m

$624

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 1/9

9:00 am-7:10 am

2 stops16h 10m

London Heathrow

Fri 1/16

1:25 pm-10:47 am

2 stops27h 22m

$630

Sioux FallsLondon

FSD - LCY

FSDLCY

Sioux Falls Joe Foss Field

Mon 1/5

6:16 pm-5:35 pm

2 stops41h 19m

London City

Thu 1/29

9:40 am-9:50 pm

2 stops42h 10m

$806

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 12/3

8:00 am-7:55 am

1 stop17h 55m

London Heathrow

Sun 12/7

6:50 am-5:33 pm

2 stops16h 43m

$844

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 12/3

1:55 pm-9:40 am

1 stop13h 45m

London Heathrow

Sun 12/7

10:25 am-5:33 pm

1 stop13h 08m

$872

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 12/15

8:00 am-7:10 am

2 stops17h 10m

London Heathrow

Sat 12/27

7:40 am-9:56 pm

1 stop20h 16m

$946

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 12/14

6:00 am-9:40 am

1 stop21h 40m

London Heathrow

Sat 12/27

7:40 am-9:56 pm

1 stop20h 16m

$946

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 12/14

11:20 am-5:55 am

1 stop12h 35m

London Heathrow

Sun 12/28

7:40 am-8:00 pm

2 stops42h 20m

$971

Sioux FallsLondon

FSD - LGW

FSDLGW

Sioux Falls Joe Foss Field

Sun 12/14

5:55 pm-10:00 am

1 stop34h 05m

London Gatwick

Mon 12/29

2:00 pm-9:31 am

1 stop25h 31m

$986

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/24

Showing 1-10 of 31 results
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Compare providers for flights from Sioux Falls to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux Falls to London in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sioux Falls-London flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Sioux Falls-London flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Sioux Falls-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux Falls-London flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux Falls-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sioux Falls to London

Have a flexible travel schedule? Discover the best time to fly to London from Sioux Falls with our price prediction graph.
Estimated round-trip 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 Sioux Falls to London

What is the cheapest month to book a flight from Sioux Falls to London?

Currently, September is the cheapest month in which you can book a flight from Sioux Falls to London (average of $652). Flying from Sioux Falls to London in May is currently the most expensive (average of $1,128). 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 FSD to LON?

Find hourly flight availability from Sioux Falls to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 25, 2025.

One of the essential ways to save on airfare from Sioux Falls to London is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 73% on airfare.

How much does it cost to fly round-trip from Sioux Falls to London?

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated November 25, 2025.
Read reviews from past customers who have flown United Airlines and American Airlines from Sioux Falls to London. 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.
United Airlines
7.4
Good
9,046 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,046 reviews
United Airlines
7.4
Good
9,046 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,038 reviews
United Airlines
7.4
Good
9,046 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to London. 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 Sioux Falls to London?

    For a flight from Sioux Falls to London, you will be flying from Joe Foss Field. Sioux Falls Joe Foss Field (FSD) is just 2.6 mi from the center of the city. Joe Foss Field is the only Sioux Falls airport and it handles 0 outbound flights to London per day. 2 airlines have flights to London from Sioux Falls Joe Foss Field on a regular basis.

  • How long is the flight from Sioux Falls to London?

    Lufthansa, United Airlines, and Delta can get you from Sioux Falls to London in just under 10h 44m. Your travel time can differ by up to 11h 32m. There are 4189 mi between Sioux Falls and London. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Sioux Falls to London round-trip?

    Our cheapest airline available from Sioux Falls to London is United Airlines. Our recent data shows that you can find tickets from as low as $709 on this airline. An additional option worth looking into is American Airlines, starting at $750. United Airlines is currently priced 35% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Sioux Falls to London one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $224. Users have also found prices from $224 and $577 on KLM and Iberia, respectively.

  • What are the most popular routes from Sioux Falls to London?

    Most travelers choose Sioux Falls Joe Foss Field - London Heathrow, Sioux Falls Joe Foss Field - London City or Sioux Falls Joe Foss Field - London Gatwick when deciding on the best route from Sioux Falls to London.

  • Can I find deals for flights from Sioux Falls to London that include hotel bookings?

    Yes. In addition to deals on Sioux Falls to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sioux Falls to London?

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

  • Can I find deals for business class flights from Sioux Falls to London?

    Yes. Cheapflights offers flight deals from Sioux Falls to London 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 Sioux Falls to London?

    Currently, September is the cheapest month in which you can book a flight from Sioux Falls to London (average of $652). Flying from Sioux Falls to London in May is currently the most expensive (average of $1,128). 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

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Ilford
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Hayes
Southend-on-Sea
Harrow
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Orpington
Watford
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Top 2 airlines flying from Sioux Falls to London

Discover the top 2 airlines that operate flights from Sioux Falls to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$709Average$1,216FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$750Average$1,115FlexibilityNo cancel feeOn-time71%

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