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$575+ Cheap flights from Rapid City (RAP) to London (LON)

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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — LON
Apr 20 — Apr 271
Mon 4/20
Mon 4/27
1 adult, Economy
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Cheap flight deals from Rapid City to London

Cheapest flights from Rapid City to London
Explore the most affordable flight options available from Rapid City to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2026.

This United Airlines deal was found by Cheapflights users on 3/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:53 pm
RAP
-
LHR
1 stop11h 27m
United Airlines
Wed 8/262:05 pm
LHR
-
RAP
2 stops33h 00m
United Airlines
Deal found 3/16$785
This British Airways deal was found by Cheapflights users on 3/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:41 pm
RAP
-
LHR
1 stop15h 14m
Multiple Airlines
Wed 8/2612:55 pm
LHR
-
RAP
1 stop16h 03m
Multiple Airlines
Deal found 3/16$805
This United Airlines deal was found by Cheapflights users on 3/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am
RAP
-
LHR
2 stops16h 30m
United Airlines
Fri 9/1111:25 am
LHR
-
RAP
1 stop16h 07m
United Airlines
Deal found 3/16$808
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Mon 11/91:00 pm
RAP
-
LHR
1 stop15h 15m
United Airlines
Fri 11/136:00 pm
LHR
-
RAP
2 stops30h 03m
United Airlines
Deal found 3/17$837
This American Airlines deal was found by Cheapflights users on 3/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:41 pm
RAP
-
LHR
1 stop13h 19m
American Airlines
Wed 8/269:45 am
LHR
-
RAP
1 stop14h 55m
American Airlines
Deal found 3/17$852
This Delta deal was found by Cheapflights users on 3/18. 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 8/126:20 am
RAP
-
LCY
2 stops17h 55m
Delta
Wed 8/267:45 am
LCY
-
RAP
2 stops21h 13m
Delta
Deal found 3/18$1,046
This Delta deal was found by Cheapflights users on 3/16. 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.
Tue 5/264:33 pm
RAP
-
LCY
2 stops17h 07m
Delta
Thu 6/48:25 am
LCY
-
RAP
2 stops20h 59m
Delta
Deal found 3/16$1,159
This KLM deal was found by Cheapflights users on 3/19. 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.
Wed 8/1210:40 am
RAP
-
LCY
2 stops13h 35m
KLM
Wed 8/267:45 am
LCY
-
RAP
2 stops14h 25m
KLM
Deal found 3/19$1,380
This Delta deal was found by Cheapflights users on 3/20. 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.
Tue 9/14:00 pm
RAP
-
LCY
2 stops17h 40m
Delta
Fri 9/118:25 am
LCY
-
RAP
2 stops20h 33m
Delta
Deal found 3/20$1,489
This Delta deal was found by Cheapflights users on 3/16. 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.
Thu 4/303:55 pm
RAP
-
LCY
2 stops17h 45m
Delta
Thu 5/79:20 am
LCY
-
RAP
2 stops20h 03m
Delta
Deal found 3/16$1,791
This lastminute.com deal was found by Cheapflights users on 3/18. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/234:00 pm
RAP
-
LCY
2 stops33h 50m
Virgin Atlantic
Tue 7/285:50 pm
LCY
-
RAP
2 stops35h 08m
Virgin Atlantic
Deal found 3/18$1,833
This Expedia deal was found by Cheapflights users on 3/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/234:00 pm
RAP
-
LCY
2 stops33h 50m
KLM
Tue 7/287:00 pm
LCY
-
RAP
2 stops27h 10m
KLM
Deal found 3/16$1,939

Find flight deals from Rapid City to London

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to London (LON). 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 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$785
(United Airlines)

One-way from

$575
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$952
Provider with most accurate pricing for Rapid City-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rapid City-London (LON) flights.
Search Deals
From Rapid City to London (LON)
Search Deals
One-way flight from Rapid City to London (LON)
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($206 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rapid City to London 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 21, 2026.
Use the filters below to find and compare flights from Rapid City to London 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

5:53 pm-12:20 pm

1 stop11h 27m

London Heathrow

Wed 8/26

2:05 pm-4:05 pm

2 stops33h 00m

$785

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

$805

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Tue 9/1

10:13 am-11:50 am

2 stops18h 37m

London Heathrow

Fri 9/11

2:50 pm-8:32 pm

1 stop12h 42m

$853

Rapid CityLondon

RAP - LHR

RAPLHR

Rapid City

Sat 8/22

4:41 pm-9:40 am

1 stop33h 59m

London Heathrow

Sat 8/29

7:25 am-10:23 pm

2 stops21h 58m

$880

Rapid CityLondon

RAP - LCY

RAPLCY

Rapid City

Wed 8/12

6:20 am-7:15 am

2 stops17h 55m

London City

Wed 8/26

7:45 am-9:58 pm

2 stops21h 13m

$1,046

Rapid CityLondon

RAP - LCY

RAPLCY

Rapid City

Tue 5/26

4:33 pm-4:40 pm

2 stops17h 07m

London City

Thu 6/4

8:25 am-10:24 pm

2 stops20h 59m

$1,159
Quickest round-trip

Rapid CityLondon

RAP - LCY

RAPLCY

Rapid City

Wed 8/12

10:40 am-7:15 am

2 stops13h 35m

London City

Wed 8/26

7:45 am-3:10 pm

2 stops14h 25m

$1,380

Rapid CityLondon

RAP - LCY

RAPLCY

Rapid City

Tue 9/1

4:00 pm-4:40 pm

2 stops17h 40m

London City

Fri 9/11

8:25 am-9:58 pm

2 stops20h 33m

$1,489

Rapid CityLondon

RAP - LCY

RAPLCY

Rapid City

Thu 4/30

3:55 pm-4:40 pm

2 stops17h 45m

London City

Thu 5/7

9:20 am-10:23 pm

2 stops20h 03m

$1,791

Rapid CityLondon

RAP - LCY

RAPLCY

Rapid City

Thu 7/23

4:00 pm-8:50 am

2 stops33h 50m

London City

Tue 7/28

5:50 pm-9:58 pm

2 stops35h 08m

$1,833

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Rapid City to London

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 Rapid City to London in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 Rapid City-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rapid City-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rapid City-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rapid City-London 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 Rapid City-London 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 Rapid City to London

Have a flexible travel schedule? Discover the best time to fly to London from Rapid City 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 Rapid City to London
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated March 21, 2026.
Get a feel of what it's like to fly with United Airlines from Rapid City to London by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,452 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,452 reviews
United Airlines
7.4
Good
9,452 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Rapid City to London. 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 Rapid City to London?

    Rapid City (RAP) is the airport you will fly out of if you book a flight from Rapid City to London. You should not have trouble finding flights to London from Rapid City; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Rapid City airport to London. It is only a 9.0 mi journey to Rapid City (RAP) from Rapid City’s city center.

  • How long is the flight from Rapid City to London?

    Airlines like United Airlines, Delta, and KLM fly from Rapid City to London in about 13h 35m. The time it takes to get you to your destination can typically vary by up to 4h 20m. There are 4400 mi between Rapid City and London. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Rapid City to London round-trip?

    Currently priced at $695, United Airlines will fly you from Rapid City to London and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. United Airlines is currently priced 20% below the average price you’ll pay for this route.

  • Can I find deals for flights from Rapid City to London that include hotel bookings?

    Yes. In addition to deals on Rapid City to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Rapid City to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rapid City to London.

  • Can I find deals for business class flights from Rapid City to London?

    Yes. Cheapflights offers flight deals from Rapid City to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near London?

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Alternative routes for Rapid City to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Rapid City to London

Discover the top airline that operate flights from Rapid City to London. 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 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$695Average$908FlexibilityNo cancel feeOn-time69%

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