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Cheap flights from Sioux Falls to London Heathrow Airport from £446

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 20/7. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LHR
10 Aug — 17 Aug1
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 11 July 2026.

Wed 21/1015:03
FSD
-
LHR
1 stop11h 27m
United Airlines
Wed 28/1006:50
LHR
-
FSD
2 stops19h 55m
United Airlines
Deal found 7/7£652
Sun 4/1013:05
FSD
-
LHR
1 stop18h 00m
KLM
Tue 20/1006:30
LHR
-
FSD
2 stops15h 29m
KLM
Deal found 7/7£653
Wed 30/911:15
FSD
-
LHR
2 stops16h 45m
United Airlines
Wed 14/1010:50
LHR
-
FSD
2 stops18h 21m
United Airlines
Deal found 6/7£661
Wed 23/907:47
FSD
-
LHR
2 stops16h 43m
United Airlines
Wed 7/1006:55
LHR
-
FSD
2 stops17h 01m
United Airlines
Deal found 9/7£662
Sun 4/1013:05
FSD
-
LHR
2 stops13h 55m
Delta
Tue 20/1008:40
LHR
-
FSD
2 stops20h 32m
Delta
Deal found 7/7£666
Sun 4/1011:15
FSD
-
LHR
1 stop18h 40m
United Airlines
Tue 20/1011:05
LHR
-
FSD
1 stop12h 51m
United Airlines
Deal found 7/7£674
Wed 30/912:06
FSD
-
LHR
1 stop14h 59m
American Airlines
Wed 14/1015:15
LHR
-
FSD
1 stop15h 16m
American Airlines
Deal found 6/7£680
Wed 23/916:28
FSD
-
LHR
1 stop14h 37m
Delta
Wed 7/1011:15
LHR
-
FSD
1 stop14h 41m
Delta
Deal found 9/7£681
Sun 9/807:35
FSD
-
LHR
1 stop19h 25m
United Airlines
Tue 25/806:50
LHR
-
FSD
2 stops17h 08m
United Airlines
Deal found 7/7£690

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 11 July 2026.

Round-trip from

£652

One-way from

£446

Popular in

June

Cheapest in

March

Average price

£867
United Airlines
  • United Airlines
  • 21/10-28/10
  • 3 total stops
  • 31h 22m total
  • Sioux Falls to London
Search Deals
British Airways
  • British Airways
  • 20/7
  • 1 total stop
  • 12h 50m total
  • Sioux Falls to London
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£151 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 11 July 2026.
Use the filters below to find and compare flights from Sioux Falls to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 4/10

13:05-13:05

1 stop18h 00m

London Heathrow

Tue 20/10

06:30-15:59

2 stops15h 29m

£653

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 30/9

11:00-13:05

1 stop20h 05m

London Heathrow

Wed 14/10

06:30-15:59

2 stops15h 29m

£659
Fastest return journey

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 23/9

16:28-13:05

1 stop14h 37m

London Heathrow

Wed 7/10

06:30-15:59

2 stops15h 29m

£659

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 4/10

16:28-13:05

1 stop14h 37m

London Heathrow

Tue 20/10

06:30-19:43

2 stops19h 13m

£659

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 26/8

18:39-18:40

2 stops18h 01m

London Heathrow

Wed 9/9

09:00-23:12

2 stops20h 12m

£698

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sat 12/9

18:41-09:00

1 stop32h 19m

London Heathrow

Tue 22/9

06:50-23:12

2 stops22h 22m

£701

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 11/8

16:28-13:05

1 stop14h 37m

London Heathrow

Mon 17/8

08:40-19:29

2 stops16h 49m

£760

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Thu 6/8

11:16-08:30

1 stop15h 14m

London Heathrow

Thu 13/8

17:40-16:23

2 stops28h 43m

£763

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sat 25/7

15:07-06:45

1 stop33h 38m

London Heathrow

Wed 5/8

08:00-23:31

1 stop21h 31m

£1,048

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 26/8

05:00-09:20

3 stops22h 20m

London Heathrow

Wed 9/9

06:40-22:51

3 stops22h 11m

£1,132

Flights are sorted by cheapest return flights first.

Deals found on 6/7

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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.

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 18h. KLM provides one of the quickest options available for as low as £653. 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.

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
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Slough
Croydon
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
Kingston upon Thames
Eastbourne
Swindon
Poole
Southall
Aylesbury
Romford

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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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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