How long does it take to fly to London Heathrow Airport?

On average, it takes 12h 26m to fly from South Dakota to London Heathrow Airport if you fly out of Sioux Falls (the most popular airport in South Dakota) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Rapid City and into London Heathrow Airport, then the flight time is around 12h 45m.

What is the cheapest airline that flies from South Dakota to London Heathrow?

United Airlines and Lufthansa are the most popular carriers operating from South Dakota to London Heathrow

How many operators does momondo search for flights from South Dakota to London Heathrow Airport?

As of March 2026, there is 1 operator available to choose from for flights from South Dakota to London Heathrow Airport.

How old do you have to be to fly from South Dakota to London Heathrow Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$384 Cheap Flights from South Dakota to London Heathrow Airport in 2026

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from South Dakota to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:37 pm - 7:40 pm

FSD

LHR

19h 03m

2 stops

6:55 am - 8:04 pm

LHR

FSD

19h 09m

2 stops

$833Lufthansa

Sun, Aug 16 - Tue, Sep 8

6:52 pm - 4:40 pm

FSD

LHR

15h 48m

2 stops

7:25 am - 9:52 pm

LHR

FSD

20h 27m

2 stops

$852Lufthansa

Sun, May 3 - Tue, May 19

7:00 am - 12:20 pm

RAP

LHR

22h 20m

1 stop

6:50 am - 6:24 pm

LHR

RAP

18h 34m

2 stops

$875United Airlines

Wed, Aug 12 - Wed, Aug 26

7:00 am - 12:20 pm

RAP

LHR

22h 20m

1 stop

6:50 am - 6:24 pm

LHR

RAP

18h 34m

2 stops

$876United Airlines

Wed, Aug 12 - Wed, Aug 26

6:37 pm - 11:55 am

FSD

LHR

11h 18m

1 stop

10:50 am - 9:52 pm

LHR

FSD

17h 02m

2 stops

$876United Airlines

Sun, Aug 16 - Tue, Sep 8

7:00 am - 6:30 am

RAP

LHR

16h 30m

2 stops

6:50 am - 6:24 pm

LHR

RAP

18h 34m

2 stops

$879United Airlines

Wed, Aug 12 - Wed, Aug 26

5:53 pm - 9:40 am

RAP

LHR

32h 47m

1 stop

7:25 am - 10:23 pm

LHR

RAP

21h 58m

2 stops

$881United Airlines

Sat, Aug 15 - Wed, Sep 9

1:00 pm - 9:05 am

RAP

LHR

13h 05m

1 stop

12:55 pm - 9:58 pm

LHR

RAP

16h 03m

1 stop

$885Multiple Airlines

Wed, Aug 12 - Wed, Aug 26

7:00 am - 9:40 am

RAP

LHR

19h 40m

1 stop

7:30 am - 6:24 pm

LHR

RAP

17h 54m

2 stops

$887United Airlines

Wed, Aug 12 - Fri, Sep 11

6:52 pm - 3:40 pm

FSD

LHR

14h 48m

2 stops

7:25 am - 8:20 pm

LHR

FSD

18h 55m

2 stops

$888Lufthansa

Fri, May 1 - Fri, May 8

Lufthansa flights from South Dakota to London Heathrow Airport

Our best Lufthansa deals on South Dakota to London Heathrow Airport flight tickets

Lufthansa

Aug 16

FSD6:37 pmSioux Falls Joe Foss Field

19h 03m

2 stops

LHR7:40 pmLondon Heathrow

Sep 8

LHR6:55 amLondon Heathrow

19h 09m

2 stops

FSD8:04 pmSioux Falls Joe Foss Field

$833

Lufthansa

May 3

FSD6:52 pmSioux Falls Joe Foss Field

15h 48m

2 stops

LHR4:40 pmLondon Heathrow

May 19

LHR7:25 amLondon Heathrow

20h 27m

2 stops

FSD9:52 pmSioux Falls Joe Foss Field

$852

Lufthansa

Aug 18

FSD6:37 pmSioux Falls Joe Foss Field

17h 48m

2 stops

LHR6:25 pmLondon Heathrow

Sep 11

LHR7:25 amLondon Heathrow

20h 27m

2 stops

FSD9:52 pmSioux Falls Joe Foss Field

$889

United Airlines flights from South Dakota to London Heathrow Airport

Our best United Airlines deals on South Dakota to London Heathrow Airport flight tickets

United Airlines

Aug 12

RAP7:00 amRapid City

22h 20m

1 stop

LHR12:20 pmLondon Heathrow

Aug 26

LHR6:50 amLondon Heathrow

18h 34m

2 stops

RAP6:24 pmRapid City

$875

United Airlines

Aug 12

RAP7:00 amRapid City

22h 20m

1 stop

LHR12:20 pmLondon Heathrow

Aug 26

LHR6:50 amLondon Heathrow

18h 34m

2 stops

RAP6:24 pmRapid City

$876

United Airlines

Aug 12

RAP7:00 amRapid City

16h 30m

2 stops

LHR6:30 amLondon Heathrow

Aug 26

LHR6:50 amLondon Heathrow

18h 34m

2 stops

RAP6:24 pmRapid City

$879

momondo Fare Finder

Use the filters below to find and compare flights from South Dakota to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 8/16

6:37 pm-7:40 pm

2 stops19h 03m

London Heathrow

Tue 9/8

6:55 am-8:04 pm

2 stops19h 09m

$833

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 5/3

6:52 pm-4:40 pm

2 stops15h 48m

London Heathrow

Tue 5/19

7:25 am-9:52 pm

2 stops20h 27m

$852

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

7:00 am-12:20 pm

1 stop22h 20m

London Heathrow

Wed 8/26

6:50 am-6:24 pm

2 stops18h 34m

$875

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

7:00 am-12:20 pm

1 stop22h 20m

London Heathrow

Wed 8/26

6:50 am-6:24 pm

2 stops18h 34m

$876

Quickest round-trip

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 8/16

6:37 pm-11:55 am

1 stop11h 18m

London Heathrow

Tue 9/8

10:50 am-9:52 pm

2 stops17h 02m

$876

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

7:00 am-6:30 am

2 stops16h 30m

London Heathrow

Wed 8/26

6:50 am-6:24 pm

2 stops18h 34m

$879

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Sat 8/15

5:53 pm-9:40 am

1 stop32h 47m

London Heathrow

Wed 9/9

7:25 am-10:23 pm

2 stops21h 58m

$881

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

1:00 pm-9:05 am

1 stop13h 05m

London Heathrow

Wed 8/26

12:55 pm-9:58 pm

1 stop16h 03m

$885

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

7:00 am-9:40 am

1 stop19h 40m

London Heathrow

Fri 9/11

7:30 am-6:24 pm

2 stops17h 54m

$887

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 5/1

6:52 pm-3:40 pm

2 stops14h 48m

London Heathrow

Fri 5/8

7:25 am-8:20 pm

2 stops18h 55m

$888

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from South Dakota to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from South Dakota, with most prices found around $658. If you’re not able to fly to London Heathrow Airport in February, then August is your next best option. Flight prices from South Dakota to London Heathrow Airport during August average around $681.

Can stopping save me money on South Dakota to London Heathrow Airport flights?

You could potentially save up to 40% on your flight if you consider stops on a South Dakota to London Heathrow Airport flight.

Cheap South Dakota to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Dakota to London Heathrow Airport

Fastest flight time	12h 50m
Direct flights	None

The fastest flight from South Dakota to London Heathrow Airport takes 12h 50m

There are no direct flights from South Dakota to London Heathrow Airport. There are no popular flight routes from South Dakota to London Heathrow Airport.

Search flight deals

When did momondo last update prices for flights from South Dakota to London Heathrow Airport?
Prices for flights from South Dakota to London Heathrow Airport are updated daily.
How many operators does momondo search for flights from South Dakota to London Heathrow Airport?
As of March 2026, there is 1 operator available to choose from for flights from South Dakota to London Heathrow Airport.
How old do you have to be to fly from South Dakota to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from South Dakota to London Heathrow Airport

Compare and see reviews for airlines that fly from South Dakota to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 9,514 reviews		Search United Airlines flights

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Crawley

Slough

Stratford-upon-Avon

Wembley

Hayes

Croydon

Dartford

Brentwood

Guildford

Harrow

Cobham

Folkestone

Romford

Stansted

Watford

Why use momondo?

Why should I use momondo to find a flight deal from South Dakota to London?

Finding the right flight to London from South Dakota is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

Can I find flights from South Dakota to London with flexible booking policies on momondo?

Flights from South Dakota to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from South Dakota to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from South Dakota.

I’m not ready to book a flight from South Dakota to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from South Dakota. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Wed 4/29

Wed 5/6

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities

Other flights from South Dakota

Other flights to London

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $431

Flights to London City Airportfrom $674

Flights to London Stansted Airportfrom $467

Flights to London Luton Airportfrom $518

Flights to Glasgow Intl Airportfrom $524

Flights to Belfast Intl Airportfrom $669

Flights to London Southend Airportfrom $650

Flights to Belfast City Airportfrom $669

Cheap flights from South Dakota to London from $384

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South Dakota to London departing on 7/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from South Dakota to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Lufthansa flights from South Dakota to London Heathrow Airport

Our best Lufthansa deals on South Dakota to London Heathrow Airport flight tickets

United Airlines flights from South Dakota to London Heathrow Airport

Our best United Airlines deals on South Dakota to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from South Dakota to London Heathrow Airport that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from South Dakota to London Heathrow Airport

What is the cheapest month to fly to London Heathrow Airport?

Can stopping save me money on South Dakota to London Heathrow Airport flights?

What is the cheapest airline that flies from South Dakota to London Heathrow?

How long does it take to fly to London Heathrow Airport?

Cheap South Dakota to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Dakota to London Heathrow Airport

Fastest flight time

Direct flights

Best airlines flying from South Dakota to London Heathrow Airport

Compare and see reviews for airlines that fly from South Dakota to London Heathrow Airport with momondo

Traveling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

South Dakota flight routes

According to popular flight searches on momondo this year

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Complete your trip to London

Explore popular destinations other users love

According to popular flight searches on momondo this year