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Cheap flights from Rapid City to London from $600

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rapid City to London departing on 5/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Rapid City to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:08 am - 9:40 am
RAP
-
LHR
15h 32m
1 stop
United Airlines Logo
7:30 am - 7:25 pm
LHR
-
RAP
18h 55m
2 stops
$836United Airlines
Wed, Aug 12 - Wed, Aug 26
United Airlines Logo
7:00 am - 6:30 am
RAP
-
LHR
16h 30m
2 stops
United Airlines Logo
7:30 am - 7:25 pm
LHR
-
RAP
18h 55m
2 stops
$839United Airlines
Wed, Aug 12 - Wed, Aug 26
United Airlines Logo
7:00 am - 6:30 am
RAP
-
LHR
16h 30m
2 stops
United Airlines Logo
7:30 am - 4:05 pm
LHR
-
RAP
15h 35m
2 stops
$840United Airlines
Wed, Aug 12 - Wed, Aug 26
United Airlines Logo
5:00 am - 6:30 am
RAP
-
LHR
18h 30m
2 stops
United Airlines Logo
5:40 pm - 12:24 pm
LHR
-
RAP
25h 44m
2 stops
$842United Airlines
Tue, Sep 1 - Fri, Sep 11
Multiple Airlines Logo
12:41 pm - 10:55 am
RAP
-
LHR
15h 14m
1 stop
Multiple Airlines Logo
12:55 pm - 9:58 pm
LHR
-
RAP
16h 03m
1 stop
$854Multiple Airlines
Wed, Aug 12 - Wed, Aug 26
United Airlines Logo
5:00 am - 6:30 am
RAP
-
LHR
18h 30m
2 stops
United Airlines Logo
11:25 am - 8:32 pm
LHR
-
RAP
16h 07m
1 stop
$857United Airlines
Tue, Sep 1 - Fri, Sep 11
United Airlines Logo
7:00 am - 6:30 am
RAP
-
LHR
16h 30m
2 stops
United Airlines Logo
2:50 pm - 10:23 pm
LHR
-
RAP
14h 33m
1 stop
$858United Airlines
Tue, Sep 1 - Fri, Sep 11
United Airlines Logo
7:00 am - 12:20 pm
RAP
-
LHR
22h 20m
1 stop
United Airlines Logo
6:50 am - 6:24 pm
LHR
-
RAP
18h 34m
2 stops
$876United Airlines
Wed, Aug 12 - Wed, Aug 26
United Airlines Logo
7:00 am - 6:30 am
RAP
-
LHR
16h 30m
2 stops
United Airlines Logo
6:50 am - 6:24 pm
LHR
-
RAP
18h 34m
2 stops
$879United Airlines
Wed, Aug 12 - Wed, Aug 26
American Airlines Logo
1:00 pm - 9:05 am
RAP
-
LHR
13h 05m
1 stop
American Airlines Logo
8:55 am - 9:58 pm
LHR
-
RAP
20h 03m
1 stop
$884American Airlines
Tue, Sep 1 - Fri, Sep 11

United Airlines flights from Rapid City to London Heathrow Airport

Our best United Airlines deals on Rapid City to London Heathrow Airport flight tickets
United Airlines
Aug 12
RAP11:08 amRapid City
15h 32m
1 stop
LHR9:40 amLondon Heathrow
Aug 26
LHR7:30 amLondon Heathrow
18h 55m
2 stops
RAP7:25 pmRapid City
$836
United Airlines
Aug 12
RAP7:00 amRapid City
16h 30m
2 stops
LHR6:30 amLondon Heathrow
Aug 26
LHR7:30 amLondon Heathrow
18h 55m
2 stops
RAP7:25 pmRapid City
$839
United Airlines
Aug 12
RAP7:00 amRapid City
16h 30m
2 stops
LHR6:30 amLondon Heathrow
Aug 26
LHR7:30 amLondon Heathrow
15h 35m
2 stops
RAP4:05 pmRapid City
$840

KLM flights from Rapid City to London Heathrow Airport

Our best KLM deals on Rapid City to London Heathrow Airport flight tickets
KLM
May 8
RAP4:33 pmRapid City
13h 32m
1 stop
LHR1:05 pmLondon Heathrow
May 15
LHR6:30 amLondon Heathrow
16h 18m
2 stops
RAP3:48 pmRapid City
$935
KLM
May 8
RAP11:13 amRapid City
18h 52m
1 stop
LHR1:05 pmLondon Heathrow
May 15
LHR12:25 pmLondon Heathrow
16h 58m
1 stop
RAP10:23 pmRapid City
$964
KLM
May 26
RAP4:33 pmRapid City
13h 32m
1 stop
LHR1:05 pmLondon Heathrow
Jun 4
LHR6:30 amLondon Heathrow
14h 14m
2 stops
RAP1:44 pmRapid City
$1,138

momondo Fare Finder

 
Customize your flight search to find flights from Rapid City 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 March 28, 2026.
Use the filters below to find and compare flights from Rapid City 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

Wed 8/12

11:08 am-9:40 am

1 stop15h 32m

London Heathrow

Wed 8/26

7:30 am-7:25 pm

2 stops18h 55m

$836

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

7:00 am-6:30 am

2 stops16h 30m

London Heathrow

Wed 8/26

7:30 am-7:25 pm

2 stops18h 55m

$839

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Wed 8/12

7:00 am-6:30 am

2 stops16h 30m

London Heathrow

Wed 8/26

7:30 am-4:05 pm

2 stops15h 35m

$840

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Tue 9/1

5:00 am-6:30 am

2 stops18h 30m

London Heathrow

Fri 9/11

5:40 pm-12:24 pm

2 stops25h 44m

$842

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-9:58 pm

1 stop16h 03m

$854

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Tue 9/1

5:00 am-6:30 am

2 stops18h 30m

London Heathrow

Fri 9/11

11:25 am-8:32 pm

1 stop16h 07m

$857
Quickest round-trip

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Tue 9/1

7:00 am-6:30 am

2 stops16h 30m

London Heathrow

Fri 9/11

2:50 pm-10:23 pm

1 stop14h 33m

$858

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

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

Tue 9/1

1:00 pm-9:05 am

1 stop13h 05m

London Heathrow

Fri 9/11

8:55 am-9:58 pm

1 stop20h 03m

$884

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Rapid City 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

Can stopping save me money on Rapid City to London Heathrow Airport flights?

You could potentially save up to 26% on your flight if you consider stops on a Rapid City to London Heathrow Airport flight.

When to book flights from Rapid City to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Rapid City to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Rapid City to London Heathrow Airport (RAP to LHR) flight deals and tips

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

Fastest flight time

12h 45m

Direct flights

None
The fastest flight from Rapid City to London Heathrow Airport takes 12h 45m
There are no direct flights from Rapid City to London Heathrow Airport. There are no popular flight routes from Rapid City to London Heathrow Airport.
Search flight deals

  • How far is Rapid City to London Heathrow by plane?

    A flight from Rapid City to London Heathrow will travel around 4388.5 mi. A reasonable flight in good conditions will take 12h 45m.

  • When did momondo last update prices for flights from Rapid City Airport to London Heathrow Airport?

    Prices for flights from Rapid City Airport to London Heathrow Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Rapid City Airport to London Heathrow Airport?

  • How old do you have to be to fly from Rapid City Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rapid City Airport to London Heathrow Airport.

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

    The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Rapid City to London Heathrow Airport?

Best airlines flying from Rapid City to London Heathrow Airport

Compare and see reviews for airlines that fly from Rapid City to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $695Free CancellationRating
7.4
9,499 reviews
Search United Airlines flights

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Why use momondo?

Why should I use momondo to find a flight deal from Rapid City to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Rapid City to London for you.

Can I find flights from Rapid City to London with flexible booking policies on momondo?

Flights from Rapid City 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 Rapid City to London?

momondo provides multiple filters to help you find the best flight to London from Rapid City. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Rapid City to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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