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Cheap flights from Sioux Falls to London Heathrow Airport from £183

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 18/5. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LHR
10 Mar — 17 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sioux Falls to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Sioux Falls to Heathrow
Explore the most affordable flight options available from Sioux Falls to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 February 2026.

Wed 13/511:25
FSD
-
LHR
1 stop16h 15m
United Airlines
Wed 20/508:00
LHR
-
FSD
1 stop15h 44m
United Airlines
Deal found 6/2£498
Tue 24/318:35
FSD
-
LHR
1 stop11h 40m
United Airlines
Tue 31/317:40
LHR
-
FSD
2 stops32h 50m
United Airlines
Deal found 7/2£500
Tue 6/1013:33
FSD
-
LHR
1 stop15h 22m
Multiple Airlines
Fri 16/1013:10
LHR
-
FSD
1 stop15h 07m
Multiple Airlines
Deal found 8/2£505
Tue 6/1005:15
FSD
-
LHR
2 stops19h 55m
Delta
Fri 16/1011:15
LHR
-
FSD
1 stop16h 57m
Delta
Deal found 8/2£508
Tue 24/305:20
FSD
-
LHR
1 stop22h 40m
KLM
Tue 31/312:25
LHR
-
FSD
1 stop16h 39m
KLM
Deal found 7/2£512
Fri 1/507:30
FSD
-
LHR
1 stop19h 30m
United Airlines
Fri 8/506:50
LHR
-
FSD
2 stops20h 57m
United Airlines
Deal found 8/2£513
Fri 1/505:10
FSD
-
LHR
1 stop19h 15m
KLM
Thu 7/509:55
LHR
-
FSD
2 stops15h 31m
KLM
Deal found 6/2£513
Tue 6/1006:00
FSD
-
LHR
2 stops18h 30m
United Airlines
Fri 16/1009:30
LHR
-
FSD
2 stops31h 07m
United Airlines
Deal found 8/2£514
Fri 1/511:24
FSD
-
LHR
2 stops13h 31m
United Airlines
Thu 7/506:50
LHR
-
FSD
2 stops20h 57m
United Airlines
Deal found 7/2£516

Find flight deals from Sioux Falls to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to Heathrow (LHR). 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 8 February 2026.

Round-trip from

£498

One-way from

£183

Popular in

June

Cheapest in

February

Average price

£483
United Airlines
  • United Airlines
  • 13/5-19/5
  • 2 total stops
  • 32h 57m total
  • Sioux Falls to London
Search Deals
United Airlines
  • United Airlines
  • 18/5
  • 1 total stop
  • 21h 20m total
  • Sioux Falls to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£123 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sioux Falls to Heathrow 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 8 February 2026.
Use the filters below to find and compare flights from Sioux Falls to London Heathrow Airport that are best for you.

Fly from

Sioux Falls

Fly to

Heathrow

Route

Depart

Return

Price

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 1/5

13:44-13:05

1 stop17h 21m

London Heathrow

Thu 7/5

09:55-19:26

2 stops15h 31m

£513

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 1/5

16:57-12:20

1 stop13h 23m

London Heathrow

Fri 8/5

06:50-10:42

2 stops33h 52m

£513

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 1/5

11:24-06:55

2 stops13h 31m

London Heathrow

Thu 7/5

06:50-21:47

2 stops20h 57m

£516

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Thu 30/4

11:24-06:45

1 stop13h 21m

London Heathrow

Mon 4/5

17:50-21:47

2 stops33h 57m

£522

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 1/5

09:00-08:20

2 stops17h 20m

London Heathrow

Mon 4/5

17:50-21:47

2 stops33h 57m

£527

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 18/5

09:00-12:20

1 stop21h 20m

£183

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 18/5

19:39-18:15

2 stops16h 36m

£243

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 18/5

18:11-11:10

3 stops34h 59m

£285

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sat 25/4

18:35-06:30

2 stops29h 55m

£296

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Thu 23/4

11:20-06:55

2 stops13h 35m

£366

Flights are sorted by cheapest return flights first.

Deals found on 7/2

Showing 1-10 of 12 results
1
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Best time to book a flight from Sioux Falls to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Sioux Falls 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 Sioux Falls to London Heathrow Airport

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

Currently, March is the cheapest month in which you can book a flight from Sioux Falls to London Heathrow Airport (average of £442). Flying from Sioux Falls to London Heathrow Airport in April is currently the most expensive (average of £741). 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.

Related info for your journey

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

    Most people fly from Sioux Falls Joe Foss Field (FSD) if they book a flight from Sioux Falls to London Heathrow. On average, Joe Foss Field has 0 outbound flights to London Heathrow per day from 0 airlines. Sioux Falls Joe Foss Field is conveniently located just 2.6 mi from Sioux Falls’s city center.

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

    A quick flight from Sioux Falls to London Heathrow Airport can take about 13h 23m. KLM provides one of the quickest options available for as low as £513. The distance between Sioux Falls and London Heathrow Airport is about 4189 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sioux Falls to Heathrow 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 Heathrow Airport?

    Currently, March is the cheapest month in which you can book a flight from Sioux Falls to London Heathrow Airport (average of £442). Flying from Sioux Falls to London Heathrow Airport in April is currently the most expensive (average of £741). 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 Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Luton
Northampton
Wembley
Gatwick
Slough
Ilford
Hounslow
Brentford
Hayes
Colchester
Watford
Guildford
Swindon
Bedford
Chelmsford
Eastbourne
Crawley
Kingston upon Thames

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sioux Falls to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Gatwick flights
Rapid City to Heathrow flights

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How does Cheapflights help users find flights from Sioux Falls to Heathrow?

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Why should you use Cheapflights to find cheap flight tickets from Sioux Falls to Heathrow?

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Can Cheapflights find flights from Sioux Falls to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from Sioux Falls to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from Sioux Falls to Heathrow become cheaper?

Of course! You can now track prices for flights from Sioux Falls to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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