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Cheap flights from Sioux Falls to London Heathrow Airport from £240

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 25/7. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LHR
18 Jun — 25 Jun1
1 adult

Cheap 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 13 June 2025.

Round-trip from

£536

One-way from

£240

Popular in

June

Cheapest in

November

Average price

£1,203
United Airlines
  • United Airlines
  • 7/10-17/10
  • 3 total stops
  • 44h 14m total
  • Sioux Falls to London
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25/7
  • 25/7
  • 2 total stops
  • 39h 11m total
  • Sioux Falls to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£211 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£31 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Find flight deals from Sioux Falls to Heathrow

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 13 June 2025.

Tue 7/1011:19FSD - LHR
1 stop15h 01mUnited Airlines
Fri 17/1014:05LHR - FSD
2 stops30h 32mUnited Airlines
Deal found 11/6£536
Wed 10/912:19FSD - LHR
1 stop17h 56mIberia
Mon 22/919:25LHR - FSD
2 stops28h 23mIberia
Deal found 10/6£542
Tue 7/1012:30FSD - LHR
1 stop12h 20mMultiple Airlines
Fri 17/1013:10LHR - FSD
1 stop16h 49mMultiple Airlines
Deal found 12/6£552
Tue 7/1005:25FSD - LHR
1 stop19h 20mKLM
Fri 17/1012:25LHR - FSD
1 stop16h 24mKLM
Deal found 11/6£553
Mon 22/1218:10FSD - LHR
1 stop29h 45mLufthansa
Fri 2/107:40LHR - FSD
1 stop20h 07mLufthansa
Deal found 11/6£954
Mon 23/619:59FSD - LHR
1 stop11h 11mDelta
Wed 9/711:30LHR - FSD
2 stops17h 33mDelta
Deal found 11/6£1,238
Sun 22/617:56FSD - LHR
1 stop12h 19mAmerican Airlines
Mon 7/714:25LHR - FSD
1 stop15h 34mAmerican Airlines
Deal found 12/6£1,442

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 13 June 2025.
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

Tue 7/10

11:19-08:20

1 stop15h 01m

London Heathrow

Fri 17/10

14:05-14:37

2 stops30h 32m

£536

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 10/9

12:19-12:15

1 stop17h 56m

London Heathrow

Mon 22/9

19:25-17:48

2 stops28h 23m

£542

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 7/10

12:30-06:50

1 stop12h 20m

London Heathrow

Fri 17/10

13:10-23:59

1 stop16h 49m

£552

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 7/10

05:25-06:45

1 stop19h 20m

London Heathrow

Fri 17/10

12:25-22:49

1 stop16h 24m

£553

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 28/10

18:23-11:15

1 stop11h 52m

London Heathrow

Sat 1/11

07:40-20:31

2 stops17h 51m

£1,223

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 23/6

19:59-13:10

1 stop11h 11m

London Heathrow

Wed 9/7

11:30-23:03

2 stops17h 33m

£1,238

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 22/6

17:56-12:15

1 stop12h 19m

London Heathrow

Mon 7/7

14:25-23:59

1 stop15h 34m

£1,442

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 25/7

21:39-18:50

2 stops39h 11m

£240

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 10/9

11:20-07:15

2 stops13h 55m

£328

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 5/8

05:15-06:45

1 stop19h 30m

£337

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 12 results
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.

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, January is the cheapest month in which you can book a flight from Sioux Falls to London Heathrow Airport (average of £112). Flying from Sioux Falls to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow 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 Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow 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 Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 13 June 2025.
See what other customers who have flown with Delta, KLM and United Airlines from Sioux Falls to London have to say. 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.
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,950 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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

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.

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

    Currently priced at £536, United Airlines will fly you from Sioux Falls to London Heathrow Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Iberia and KLM - these airlines can fly you to your destination from £542 and £553, respectively. Users have found that United Airlines is 27% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as £337 on KLM. Other airlines that offer cheap prices include American Airlines from £374 and Iberia from £588 one-way.

  • 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, January is the cheapest month in which you can book a flight from Sioux Falls to London Heathrow Airport (average of £112). Flying from Sioux Falls to London Heathrow Airport in August is currently the most expensive (average of £164). 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 Sioux Falls?

Book flights to Sioux Falls if you plan to visit one of these locations
Deal
Hounslow
Croydon
Milton Keynes
Northampton
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Southend-on-Sea
Watford
Hayes
Ipswich
Winchester
Folkestone
Maidstone
Swindon

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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.
Rapid City to Heathrow flights
Sioux Falls to Gatwick flights

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