RAP - LON

$831 Find Cheap Flights from Rapid City to London - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Rapid City to London departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$831
United Airlines
Tue 12/1Fri 12/4
RAP - LHR • 1 stop
Cheapest one-way
$3,099
British Airways
Sun 10/25
RAP - LHR • 2 stops
Top airlines
Cheapest • from $831 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Rapid City and London. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $653 (round-trip)
Shortest trip • 12h 04m (one-way)
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Flight Deals

Cheap Flights from Rapid City to London (RAP-LON)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Rapid City to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Rapid City to London

Tue, Dec 1 - Fri, Dec 4
United Airlines Logo
5:48 pm - 9:40 am
RAP
-
LHR
32h 52m
1 stop
United Airlines Logo
9:30 am - 10:08 pm
LHR
-
RAP
19h 38m
2 stops
$831United Airlines
Tue, Dec 1 - Fri, Dec 4
United Airlines Logo
12:50 pm - 12:00 pm
RAP
-
LHR
16h 10m
2 stops
United Airlines Logo
7:30 am - 7:08 pm
LHR
-
RAP
18h 38m
2 stops
$888United Airlines
Tue, Dec 1 - Fri, Dec 4
United Airlines Logo
12:50 pm - 12:00 pm
RAP
-
LHR
16h 10m
2 stops
United Airlines Logo
7:30 am - 7:08 pm
LHR
-
RAP
18h 38m
2 stops
$889United Airlines
Tue, Dec 1 - Fri, Dec 4
United Airlines Logo
12:50 pm - 9:40 am
RAP
-
LHR
13h 50m
1 stop
United Airlines Logo
11:35 am - 7:08 pm
LHR
-
RAP
14h 33m
1 stop
$902United Airlines
Tue, Dec 1 - Fri, Dec 4
United Airlines Logo
12:50 pm - 9:40 am
RAP
-
LHR
13h 50m
1 stop
United Airlines Logo
11:35 am - 7:08 pm
LHR
-
RAP
14h 33m
1 stop
$903United Airlines
Tue, Sep 8 - Tue, Sep 22
Delta Logo
2:30 pm - 1:05 pm
RAP
-
LHR
15h 35m
1 stop
Delta Logo
9:55 am - 10:18 pm
LHR
-
RAP
19h 23m
2 stops
$934Delta
Tue, Sep 8 - Tue, Sep 22
Delta Logo
10:42 am - 1:15 pm
RAP
-
LHR
19h 33m
2 stops
Delta Logo
6:30 am - 10:18 pm
LHR
-
RAP
22h 48m
2 stops
$938Delta
Tue, Sep 8 - Tue, Sep 22
American Airlines Logo
12:20 pm - 6:50 am
RAP
-
LHR
11h 30m
1 stop
American Airlines Logo
12:55 pm - 9:23 pm
LHR
-
RAP
15h 28m
1 stop
$962American Airlines
Fri, Aug 21 - Tue, Sep 1
Delta Logo
10:46 am - 1:05 pm
RAP
-
LHR
19h 19m
1 stop
Delta Logo
6:30 am - 10:37 pm
LHR
-
RAP
23h 07m
2 stops
$984Delta
Fri, Aug 21 - Tue, Sep 1
Delta Logo
6:48 am - 1:15 pm
RAP
-
LHR
23h 27m
2 stops
Delta Logo
6:30 am - 10:37 pm
LHR
-
RAP
23h 07m
2 stops
$988Delta
Booking Insights

KAYAK's insights & trends for Rapid City to London flights

Get data-powered insights and trends into flights from Rapid City to London to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Rapid City to London?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Rapid City to London were found on United Airlines ($831) and Delta ($934).

Good to know

Cheapest flight$831
Flight from Rapid City to London Heathrow Airport

When to book flights from Rapid City to London

Are your dates flexible? Find out the best times to travel from Rapid City to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Rapid City to London

  • What is the cheapest flight from Rapid City to London?

    In the last 5 days, the lowest price for a flight from Rapid City to London was $3,099 for a one-way ticket and $831 for a round-trip.

  • Do I need a passport to fly between Rapid City and London?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Rapid City and on arrival in London.

  • Which airports will I be using when flying from Rapid City to London?

    On your way to London, you’ll fly out from Rapid City. You’ll be landing in one of London’s 2 airports: London City or London Heathrow.

  • Which aircraft models fly most regularly from Rapid City to London?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Rapid City to London?

    Star Alliance is the only airline alliance operating flights between Rapid City and London.

  • How does KAYAK find such low prices on flights from Rapid City to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Rapid City to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Rapid City to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Rapid City is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Rapid City to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Rapid City with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Rapid City to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Rapid City up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Rapid City to London

 
See real verified KAYAK customer reviews for airlines flying from Rapid City to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Rapid City to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9927 reviews
7.1Entertainment
7.7Boarding
6.7Food
7.3Comfort
8.1Crew
Airline reviews

I was very disappointed with my experience at the United Airlines baggage check. The representative was rude and unhelpful. I was required to remove approximately 1.5 pounds from my two checked bags, even though it was a very small amount over the limit. The interaction was unnecessarily unpleasant, and I expected much better customer service. I hope United will review this incident and provide additional customer service training to its staff.

10.0 ExcellentAnonymous, Jun 2026
LAX - LHR
Read more United Airlines reviews

I was very disappointed with my experience at the United Airlines baggage check. The representative was rude and unhelpful. I was required to remove approximately 1.5 pounds from my two checked bags, even though it was a very small amount over the limit. The interaction was unnecessarily unpleasant, and I expected much better customer service. I hope United will review this incident and provide additional customer service training to its staff.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Fight was delayed an hour due to operational issues ,then further delayed due to ground control for a total of about 1.30 hours. Salad was completely frozen and flatware was so cold you could barely handle it. Crew was friendly and professional and the flight was smooth. The aircraft was clean and well-serviced.

Waited for our plane from HNL so we didn't miss connection. AMAZING Service for that, then really clean plane. Nice airline attendants.

Horrible! I paid for a straight flight from Chicago to London. A week before trip it changed and now I had a connecting flight. Our flight was delayed an hour and a half because our flight crew was still flying in from CA. Forty passengers ran from one plane to the next. The next United Airlines flight was delayed two to three hours because of mechanical difficulties. They had to ready another plane which took time. I missed my scheduled excursion in London. 😢

Lufthansa placed a 300 lb passenger in the aisle seat and I was stuck in the middle leaning sideways with no arm rest or ability to sit up straight and fully use my seat (due to encroachment-the seats are very narrow) the entire flight.

Everything you need to know for your flight from Rapid City to London

Information on your arrival and departure airports