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$331+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LON
Dec 15 — Dec 221
Mon 12/15
Mon 12/22
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 15, 2025.

This United Airlines deal was found by Cheapflights users on 11/14. 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.
Sat 11/153:15 pmFSD - LHR
1 stop32h 40mUnited Airlines
Sat 11/224:40 pmLHR - FSD
2 stops30h 57mUnited Airlines
Deal found 11/14$676
This Delta deal was found by Cheapflights users on 11/12. 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.
Sun 12/145:14 amFSD - LHR
1 stop19h 51mDelta
Thu 12/258:40 amLHR - FSD
2 stops20h 28mDelta
Deal found 11/12$680
This United Airlines deal was found by Cheapflights users on 11/12. 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.
Sat 12/135:21 pmFSD - LHR
1 stop34h 19mUnited Airlines
Thu 12/2511:35 amLHR - FSD
1 stop34h 56mUnited Airlines
Deal found 11/12$713
This Delta deal was found by Cheapflights users on 11/12. 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 12/161:30 pmFSD - LHR
1 stop11h 35mDelta
Thu 12/256:30 amLHR - FSD
2 stops15h 15mDelta
Deal found 11/12$720
This United Airlines deal was found by Cheapflights users on 11/15. 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.
Fri 12/1211:20 amFSD - LHR
1 stop12h 35mUnited Airlines
Mon 12/156:30 amLHR - FSD
2 stops21h 20mUnited Airlines
Deal found 11/15$729
This Delta deal was found by Cheapflights users on 11/12. 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.
Sat 12/135:14 amFSD - LHR
2 stops20h 36mDelta
Thu 12/256:30 amLHR - FSD
2 stops15h 15mDelta
Deal found 11/12$744
This KLM deal was found by Cheapflights users on 11/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/155:05 amFSD - LHR
1 stop20h 45mKLM
Sat 11/228:55 amLHR - FSD
1 stop20h 14mKLM
Deal found 11/14$746
This KLM deal was found by Cheapflights users on 11/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/121:30 pmFSD - LHR
1 stop11h 35mKLM
Mon 12/1511:05 amLHR - FSD
1 stop14h 35mKLM
Deal found 11/15$747
This Kiwi.com deal was found by Cheapflights users on 11/12. 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
Thu 12/252:00 pmLGW - FSD
2 stops25h 52mMultiple Airlines
Deal found 11/12$964
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 11/12$995
This Kiwi.com deal was found by Cheapflights users on 11/12. 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
Sun 12/282:10 pmLGW - FSD
2 stops25h 42mMultiple Airlines
Deal found 11/12$1,002
This Kiwi.com deal was found by Cheapflights users on 11/12. 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
Fri 12/262:00 pmLGW - FSD
2 stops35h 29mMultiple Airlines
Deal found 11/12$1,027

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 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$625
(United Airlines)

One-way from

$368
(FlightHub)

Popular in

January

Cheapest in

May

Average price

$1,098
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. 18% potential increase in price ($255 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($89 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 15, 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

Thu 1/8

3:11 pm-7:55 am

1 stop10h 44m

London Heathrow

Tue 1/13

7:40 am-5:18 pm

2 stops15h 38m

$626

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 1/14

10:50 am-7:05 am

1 stop14h 15m

London Heathrow

Tue 1/20

12:30 pm-11:14 pm

1 stop16h 44m

$653

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 12/15

11:00 am-7:05 am

1 stop14h 05m

London Heathrow

Thu 12/25

6:30 am-11:08 pm

2 stops22h 38m

$680

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 12/14

5:14 am-7:05 am

1 stop19h 51m

London Heathrow

Thu 12/25

8:40 am-11:08 pm

2 stops20h 28m

$680

Sioux FallsLondon

FSD - LCY

FSDLCY

Sioux Falls Joe Foss Field

Wed 1/14

3:11 pm-5:40 pm

2 stops44h 29m

London City

Tue 1/20

6:15 pm-5:18 pm

2 stops29h 03m

$712

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sat 12/13

5:21 pm-9:40 am

1 stop34h 19m

London Heathrow

Thu 12/25

11:35 am-4:31 pm

1 stop34h 56m

$713

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 12/12

11:20 am-5:55 am

1 stop12h 35m

London Heathrow

Mon 12/15

6:30 am-9:50 pm

2 stops21h 20m

$729

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sat 12/13

5:14 am-7:50 am

2 stops20h 36m

London Heathrow

Thu 12/25

6:30 am-3:45 pm

2 stops15h 15m

$744

Sioux FallsLondon

FSD - LGW

FSDLGW

Sioux Falls Joe Foss Field

Sun 12/14

5:55 pm-10:00 am

1 stop34h 05m

London Gatwick

Thu 12/25

2:00 pm-9:52 am

2 stops25h 52m

$964

Sioux FallsLondon

FSD - LGW

FSDLGW

Sioux Falls Joe Foss Field

Sun 12/14

5:55 pm-10:00 am

1 stop34h 05m

London Gatwick

Sun 12/28

2:10 pm-9:52 am

2 stops25h 42m

$1,002

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/14

Showing 1-10 of 29 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 15, 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.

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 15, 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
9,017 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

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
9,017 reviews
United Airlines
7.4
Good
9,017 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

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
11,051 reviews
United Airlines
7.4
Good
9,017 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

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?

    KLM, Delta, and Lufthansa can get you from Sioux Falls to London in just under 14h 05m. Your travel time can differ by up to 30h 24m. 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 36% below the average price you’ll pay for this route.

  • 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
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
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Eastleigh
Dartford
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Winchester
Orpington
Gatwick
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Wembley
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Eastbourne
Sutton

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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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$709Average$1,216FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$750Average$1,115FlexibilityNo cancel feeOn-time71%

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