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$623+ Cheap flights from Sioux Falls (FSD) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LHR
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
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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 septiembre 16, 2025.

Round-trip from

$623
(Delta)

Popular in

June

Cheapest in

August

Average price

$773
From Sioux Falls Joe Foss Field to London Heathrow
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Highest demand for flights based on searches. 28% potential increase in price ($396 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($58 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 16, 2025.

This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/121:30 pmFSD - LHR
1 stop11h 35mDelta
mié. 11/198:55 amLHR - FSD
2 stops20h 16mDelta
Deal found 9/15$623
This KLM deal was found by Cheapflights users on 9/15. 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.
mié. 11/121:30 pmFSD - LHR
1 stop11h 35mKLM
mié. 11/198:55 amLHR - FSD
1 stop20h 16mKLM
Deal found 9/15$631
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/74:24 pmFSD - LHR
1 stop14h 46mDelta
vie. 10/178:25 pmLHR - FSD
2 stops22h 30mDelta
Deal found 9/14$635
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/12:32 pmFSD - LHR
2 stops17h 18mDelta
mié. 10/89:00 amLHR - FSD
2 stops19h 56mDelta
Deal found 9/15$655
This KLM deal was found by Cheapflights users on 9/16. 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.
vie. 9/265:30 amFSD - LHR
1 stop19h 15mKLM
mar. 9/3012:25 pmLHR - FSD
1 stop16h 19mKLM
Deal found 9/16$681
This Delta deal was found by Cheapflights users on 9/16. 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.
vie. 9/265:30 amFSD - LHR
1 stop19h 15mDelta
mar. 9/3011:45 amLHR - FSD
2 stops16h 59mDelta
Deal found 9/16$686
This United Airlines deal was found by Cheapflights users on 9/15. 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.
lun. 10/66:10 pmFSD - LHR
1 stop11h 35mUnited Airlines
mar. 10/147:30 amLHR - FSD
2 stops20h 52mUnited Airlines
Deal found 9/15$700
This United Airlines deal was found by Cheapflights users on 9/14. 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.
mié. 10/19:30 amFSD - LHR
2 stops16h 10mUnited Airlines
mié. 10/87:25 amLHR - FSD
2 stops18h 56mUnited Airlines
Deal found 9/14$702
This United Airlines deal was found by Cheapflights users on 9/14. 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.
mar. 10/288:00 amFSD - LHR
1 stop16h 55mUnited Airlines
lun. 11/244:40 pmLHR - FSD
2 stops35h 06mUnited Airlines
Deal found 9/14$707
This United Airlines deal was found by Cheapflights users on 9/15. 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.
mar. 10/711:19 amFSD - LHR
1 stop13h 01mUnited Airlines
vie. 10/1711:05 amLHR - FSD
1 stop17h 17mUnited Airlines
Deal found 9/15$712

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 septiembre 16, 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

mié. 11/12

1:30 pm-7:05 am

1 stop11h 35m

London Heathrow

mié. 11/19

8:55 am-11:11 pm

2 stops20h 16m

$623

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

mar. 10/7

1:35 pm-1:30 pm

2 stops17h 55m

London Heathrow

vie. 10/17

8:25 pm-12:55 pm

2 stops22h 30m

$635

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

mié. 10/1

2:32 pm-1:50 pm

2 stops17h 18m

London Heathrow

mié. 10/8

9:00 am-10:56 pm

2 stops19h 56m

$655

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

vie. 9/26

5:30 am-6:45 am

1 stop19h 15m

London Heathrow

mar. 9/30

12:25 pm-10:44 pm

1 stop16h 19m

$681

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

lun. 10/6

1:58 pm-9:40 am

1 stop13h 42m

London Heathrow

mar. 10/14

8:30 am-10:22 pm

2 stops19h 52m

$700

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

mié. 10/1

9:30 am-7:40 am

2 stops16h 10m

London Heathrow

mié. 10/8

7:25 am-8:21 pm

2 stops18h 56m

$702

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

mar. 10/28

8:00 am-5:55 am

1 stop16h 55m

London Heathrow

lun. 11/24

4:40 pm-9:46 pm

2 stops35h 06m

$707

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

mar. 10/7

8:00 am-6:20 am

1 stop16h 20m

London Heathrow

vie. 10/17

2:10 pm-10:22 pm

1 stop14h 12m

$712

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

lun. 10/6

6:10 pm-11:45 am

1 stop11h 35m

$4,029

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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, November is the cheapest month in which you can book a flight from Sioux Falls to London Heathrow Airport (average of $661). Flying from Sioux Falls to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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 LHR?

Find hourly flight availability from Sioux Falls to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 16, 2025.

It’s optimal to fly from Sioux Falls to London Heathrow Airport in the afternoon. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the morning.

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 septiembre 16, 2025.
Get a feel of what it's like to fly with Delta and 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.
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

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
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

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
7,957 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

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?

    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 2 different airlines.

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

    For as low as $623, Delta can have you in London Heathrow Airport from Sioux Falls in 11h 35m. Sioux Falls and London Heathrow Airport are separated by a distance of 4189 mi. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from Sioux Falls to London Heathrow Airport round-trip from $679. Another airline that can offer you cheap pricing is American Airlines. Delta is priced at 32% 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, November is the cheapest month in which you can book a flight from Sioux Falls to London Heathrow Airport (average of $661). Flying from Sioux Falls to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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
Hounslow
Hayes
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Wembley
Folkestone
Chichester

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 London City flights
Rapid City to Heathrow flights
Sioux Falls to London City flights
Sioux Falls to Gatwick flights

Top 2 airlines flying from Sioux Falls to Heathrow

Discover the top 2 airlines 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 septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$679Average$872FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$750Average$1,169FlexibilityNo cancel feeOn-time71%

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