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Cheap flights from South Dakota to London from $345

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 8/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from South Dakota to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:00 pm - 10:50 am
RAP
-
LHR
15h 50m
2 stops
United Airlines Logo
9:30 am - 8:33 pm
LHR
-
RAP
17h 03m
2 stops
$825United Airlines
Mon, Oct 26 - Wed, Oct 28
American Airlines Logo
10:18 am - 6:20 am
RAP
-
LHR
13h 02m
1 stop
American Airlines Logo
8:25 am - 9:58 pm
LHR
-
RAP
19h 33m
2 stops
$870American Airlines
Wed, Oct 21 - Tue, Oct 27
United Airlines Logo
7:05 am - 9:40 am
RAP
-
LHR
20h 35m
1 stop
United Airlines Logo
7:30 am - 8:33 pm
LHR
-
RAP
19h 03m
2 stops
$904United Airlines
Sun, Oct 25 - Tue, Oct 27
Multiple Airlines Logo
12:41 pm - 10:55 am
RAP
-
LHR
15h 14m
1 stop
Multiple Airlines Logo
12:55 pm - 9:35 pm
LHR
-
RAP
15h 40m
1 stop
$907Multiple Airlines
Wed, Aug 12 - Wed, Aug 26
Multiple Airlines Logo
12:41 pm - 10:55 am
RAP
-
LHR
15h 14m
1 stop
Multiple Airlines Logo
12:55 pm - 9:35 pm
LHR
-
RAP
15h 40m
1 stop
$908Multiple Airlines
Wed, Aug 12 - Wed, Aug 26
United Airlines Logo
5:47 pm - 10:40 am
RAP
-
LHR
33h 53m
1 stop
United Airlines Logo
9:30 am - 8:33 pm
LHR
-
RAP
17h 03m
2 stops
$909United Airlines
Sat, Oct 24 - Tue, Oct 27
American Airlines Logo
12:19 pm - 6:50 am
RAP
-
LHR
11h 31m
1 stop
American Airlines Logo
9:45 am - 9:35 pm
LHR
-
RAP
18h 50m
2 stops
$912American Airlines
Wed, Aug 12 - Wed, Aug 26
Iberia Logo
12:30 pm - 10:50 am
FSD
-
LHR
16h 20m
1 stop
Iberia Logo
7:50 am - 11:51 pm
LHR
-
FSD
22h 01m
2 stops
$924Iberia
Sat, Sep 12 - Tue, Sep 22
Delta Logo
11:30 am - 1:05 pm
RAP
-
LHR
18h 35m
1 stop
Delta Logo
6:30 am - 10:39 pm
LHR
-
RAP
22h 09m
2 stops
$939Delta
Sun, Oct 18 - Fri, Oct 30
Iberia Logo
6:00 pm - 10:50 am
FSD
-
LHR
10h 50m
1 stop
Iberia Logo
2:45 pm - 11:51 pm
LHR
-
FSD
15h 06m
1 stop
$958Iberia
Sat, Sep 12 - Tue, Sep 22

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
Oct 26
RAP1:00 pmRapid City
15h 50m
2 stops
LHR10:50 amLondon Heathrow
Oct 28
LHR9:30 amLondon Heathrow
17h 03m
2 stops
RAP8:33 pmRapid City
$825
United Airlines
Oct 25
RAP7:05 amRapid City
20h 35m
1 stop
LHR9:40 amLondon Heathrow
Oct 27
LHR7:30 amLondon Heathrow
19h 03m
2 stops
RAP8:33 pmRapid City
$904
United Airlines
Oct 24
RAP5:47 pmRapid City
33h 53m
1 stop
LHR10:40 amLondon Heathrow
Oct 27
LHR9:30 amLondon Heathrow
17h 03m
2 stops
RAP8:33 pmRapid City
$909

American Airlines flights from South Dakota to London Heathrow Airport

Our best American Airlines deals on South Dakota to London Heathrow Airport flight tickets
American Airlines
Oct 21
RAP10:18 amRapid City
13h 02m
1 stop
LHR6:20 amLondon Heathrow
Oct 27
LHR8:25 amLondon Heathrow
19h 33m
2 stops
RAP9:58 pmRapid City
$870
American Airlines
Aug 12
RAP12:19 pmRapid City
11h 31m
1 stop
LHR6:50 amLondon Heathrow
Aug 26
LHR9:45 amLondon Heathrow
18h 50m
2 stops
RAP9:35 pmRapid City
$912
American Airlines
Aug 12
RAP12:41 pmRapid City
13h 19m
1 stop
LHR9:00 amLondon Heathrow
Aug 26
LHR10:30 amLondon Heathrow
18h 05m
2 stops
RAP9:35 pmRapid City
$913

momondo Fare Finder

 
Customize your flight search to find flights from South Dakota to London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated May 11, 2026.
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

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Mon 10/26

1:00 pm-10:50 am

2 stops15h 50m

London Heathrow

Wed 10/28

9:30 am-8:33 pm

2 stops17h 03m

$825

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 10/21

10:18 am-6:20 am

1 stop13h 02m

London Heathrow

Tue 10/27

8:25 am-9:58 pm

2 stops19h 33m

$870

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Sun 10/25

7:05 am-9:40 am

1 stop20h 35m

London Heathrow

Tue 10/27

7:30 am-8:33 pm

2 stops19h 03m

$904

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

12:41 pm-10:55 am

1 stop15h 14m

London Heathrow

Wed 8/26

12:55 pm-9:35 pm

1 stop15h 40m

$907

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

12:41 pm-10:55 am

1 stop15h 14m

London Heathrow

Wed 8/26

12:55 pm-9:35 pm

1 stop15h 40m

$908

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Sat 10/24

5:47 pm-10:40 am

1 stop33h 53m

London Heathrow

Tue 10/27

9:30 am-8:33 pm

2 stops17h 03m

$909

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

12:19 pm-6:50 am

1 stop11h 31m

London Heathrow

Wed 8/26

9:45 am-9:35 pm

2 stops18h 50m

$912

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sat 9/12

12:30 pm-10:50 am

1 stop16h 20m

London Heathrow

Tue 9/22

7:50 am-11:51 pm

2 stops22h 01m

$924

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Sun 10/18

11:30 am-1:05 pm

1 stop18h 35m

London Heathrow

Fri 10/30

6:30 am-10:39 pm

2 stops22h 09m

$939
Quickest round-trip

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sat 9/12

6:00 pm-10:50 am

1 stop10h 50m

London Heathrow

Tue 9/22

2:45 pm-11:51 pm

1 stop15h 06m

$958

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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

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

The month of March is, on average, the cheapest month to fly to London Heathrow Airport from South Dakota, with most prices found around $602. If you’re not able to fly to London Heathrow Airport in March, then September is your next best option. Flight prices from South Dakota to London Heathrow Airport during September average around $649.

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

You could potentially save up to 26% 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

11h 35m

Direct flights

None
The fastest flight from South Dakota to London Heathrow Airport takes 11h 35m
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

Frequently asked questions about flying from South Dakota to London Heathrow Airport

  • 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?

  • 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 AirlinesPriceFrom $654Free CancellationRating
7.4
9,702 reviews
Search United Airlines flights
American AirlinesPriceFrom $658Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Stratford-upon-Avon
Crawley
Wembley
Slough
Stansted
Watford
Croydon
Brentwood
Dartford
Cobham
Folkestone
Romford
Harrow
Uxbridge

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

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