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$337+ Cheap flights from Sioux Falls (FSD) to Heathrow (LHR)

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LHR
Mar 31 — Apr 71
Tue 3/31
Tue 4/7
1 adult, Economy
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Cheap 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 March 1, 2026.

This United Airlines deal was found by Cheapflights users on 2/27. 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 10/67:40 am
FSD
-
LHR
2 stops20h 35m
United Airlines
Fri 10/165:40 pm
LHR
-
FSD
2 stops33h 06m
United Airlines
Deal found 2/27$690
This United Airlines deal was found by Cheapflights users on 2/26. 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 8/127:40 am
FSD
-
LHR
2 stops20h 35m
United Airlines
Mon 8/179:00 am
LHR
-
FSD
2 stops41h 46m
United Airlines
Deal found 2/26$702
This KLM deal was found by Cheapflights users on 2/27. 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.
Tue 10/64:09 pm
FSD
-
LHR
1 stop14h 56m
KLM
Fri 10/1611:15 am
LHR
-
FSD
1 stop16h 57m
KLM
Deal found 2/27$707
This KLM deal was found by Cheapflights users on 2/26. 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.
Thu 12/35:25 am
FSD
-
LHR
1 stop21h 35m
KLM
Thu 12/108:40 am
LHR
-
FSD
2 stops16h 34m
KLM
Deal found 2/26$718
This Virgin Atlantic deal was found by Cheapflights users on 2/26. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/310:58 am
FSD
-
LHR
2 stops13h 52m
Virgin Atlantic
Thu 12/108:40 am
LHR
-
FSD
2 stops16h 34m
Virgin Atlantic
Deal found 2/26$722
This United Airlines deal was found by Cheapflights users on 2/26. 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 4/811:25 am
FSD
-
LHR
2 stops16h 50m
United Airlines
Fri 4/176:50 am
LHR
-
FSD
2 stops22h 39m
United Airlines
Deal found 2/26$726
This Delta deal was found by Cheapflights users on 2/25. 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.
Wed 3/251:34 pm
FSD
-
LHR
1 stop12h 31m
Delta
Wed 4/18:40 am
LHR
-
FSD
2 stops16h 40m
Delta
Deal found 2/25$728

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 March 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$702
(United Airlines)

One-way from

$337
(BusinessClass)

Popular in

June

Cheapest in

February

Average price

$750
Provider with most accurate pricing for Sioux Falls Joe Foss Field-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-London Heathrow flights.
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From Sioux Falls Joe Foss Field to London Heathrow
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One-way flight from Sioux Falls Joe Foss Field to London Heathrow
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Highest demand for flights based on searches. 20% potential increase in price ($230 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in March 2026
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Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated March 1, 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

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 3/25

1:34 pm-7:05 am

1 stop12h 31m

London Heathrow

Wed 4/1

8:40 am-7:20 pm

2 stops16h 40m

$728

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 4/8

4:57 pm-12:20 pm

1 stop13h 23m

London Heathrow

Fri 4/17

6:50 am-5:44 pm

2 stops16h 54m

$728

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 4/8

3:17 pm-11:15 am

1 stop13h 58m

London Heathrow

Fri 4/17

1:10 pm-11:11 pm

1 stop16h 01m

$747

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 3/25

1:26 pm-10:00 am

1 stop15h 34m

London Heathrow

Wed 4/1

2:45 pm-10:55 pm

1 stop14h 10m

$747

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 4/8

6:10 am-10:15 am

2 stops22h 05m

London Heathrow

Sat 4/18

2:10 pm-9:54 pm

1 stop13h 44m

$816

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 4/8

11:01 am-1:05 pm

1 stop20h 04m

London Heathrow

Sat 4/18

3:15 pm-11:40 pm

1 stop14h 25m

$817

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 3/30

3:10 pm-8:30 am

1 stop11h 20m

London Heathrow

Mon 4/6

11:25 am-8:30 pm

1 stop15h 05m

$817

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 4/8

5:00 am-7:10 am

2 stops20h 10m

London Heathrow

Sat 4/18

10:45 am-11:40 pm

2 stops18h 55m

$821

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 3/30

11:01 am-7:10 am

2 stops14h 09m

London Heathrow

Mon 4/6

6:30 am-11:04 pm

2 stops22h 34m

$832

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 3/27

5:45 am-10:15 am

2 stops23h 30m

London Heathrow

Fri 4/3

2:10 pm-4:16 pm

2 stops32h 06m

$895

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/27

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Sioux Falls to Heathrow

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 Heathrow in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*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 Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux Falls-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux Falls-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux Falls-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 Heathrow Airport 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 Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 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 $602). Flying from Sioux Falls to London Heathrow Airport in June is currently the most expensive (average of $1,021). 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.

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

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 March 1, 2026.
Get a feel of what it's like to fly with American Airlines from Sioux Falls to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,370 reviews

Crew

8.0

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,370 reviews
American Airlines
7.2
Good
11,370 reviews

Crew

8.0

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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?

    Located just 2.6 mi from the city center, Sioux Falls Joe Foss Field is the airport most travelers will use when flying to London Heathrow from Sioux Falls. Booking flights from Joe Foss Field (FSD) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 1 airline.

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

    For as low as $728, Delta can have you in London Heathrow Airport from Sioux Falls in 12h 31m. Sioux Falls and London Heathrow Airport are separated by a distance of 4189 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Sioux Falls to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Sioux Falls to London Heathrow Airport round-trip from $658. American Airlines is priced at 24% lower than the current average price of a flight leaving 3 months from now.

  • 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 vacation 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 $602). Flying from Sioux Falls to London Heathrow Airport in June is currently the most expensive (average of $1,021). 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 Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Aylesbury
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne

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.
Rapid City to Heathrow flights

Top airline flying from Sioux Falls to Heathrow

Discover the top airline that operate flights from Sioux Falls to Heathrow. 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 March 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$658Average$851FlexibilityNo cancel feeOn-time71%

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