LON - FSD

Find Cheap Flights from London to Sioux Falls – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Direct flights
Not available
There are currently no direct flights between London and Sioux Falls. You’ll need at least 1 connection.
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Top stopover airports
Warsaw (WAW)
Cheapest • Avg £699 (return)
Chicago (ORD)
Shortest trip • 12h 29m (one-way)
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When to travel
April
Cheapest • 100% price drop
August
Most popular
Good to know
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+1
+1
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Booking Insights
Flight Deals

Cheap Flights from London to Sioux Falls (LON-FSD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Sioux Falls 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 return flight deals from London to Sioux Falls

Multiple Airlines Logo
LON
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FSD
4199 mimulti-stop
Multiple Airlines Logo
FSD
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LON
4199 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK’s insights & trends for London to Sioux Falls flights

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

What is the cheapest month to fly from London to Sioux Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Sioux Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Sioux Falls is April, where tickets cost £0 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is £1,061 and £971 respectively.

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Good to know - Cheap tickets from London to Sioux Falls

Most popular time to fly (23% more expensive on average)

When to book flights from London to Sioux Falls

Are your dates flexible? Find out the best times to travel from London to Sioux Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 London to Sioux Falls

  • Which aircraft models fly most regularly from London to Sioux Falls?

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

  • Which airline alliances offer flights from London to Sioux Falls?

    Star Alliance is the only airline alliance operating flights between London and Sioux Falls.

  • How does KAYAK find such low prices on flights from London to Sioux Falls?

    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 London to Sioux Falls.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux Falls from London 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 London to Sioux Falls?

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

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

    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 Sioux Falls from London 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 London to Sioux Falls

 
See real verified KAYAK customer reviews for airlines flying from London to Sioux Falls. 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 London to Sioux Falls? 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 9988 reviews
6.6Food
7.1Entertainment
7.7Boarding
7.3Comfort
8.1Crew
Airline reviews

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

8.0 ExcellentMarianne, May 2026
LHR - DEN
Read more United Airlines reviews

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

First time flying with UA and it was a great experience. Thank you

Staff on board was excellent. Positive upbeat helpful- like it used to be.

United has come a long way, it’s been a fantastic experience traveling with them.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

Our experience on United Airlines was extremely poor. The plane was extremely cold throughout our entire flight- which multiple people complained about- and we had to wait 2 hours to get a blanket which was too thin and barely helped warm us up. As well as this, none of the entertainment features were working so we had to sit through a roughly 10 hour flight with nothing to keep our attention, including the actual flight path screen. It was an extremely disappointing experience and I would hope that this gets fixed if we ever choose United Airlines again.

Cabin crew was very friendly, requests were satisfied promptly and cheerfully, and the cabin was reasonably clean when I boarded. The United lounges at Newark and Heathrow are always well-run and comfortable, especially Newark. I look forward to the new lounge that will be part of the rebuild of Terminal 2 at Heathrow.

The senior flight attendants were amazing. Totally different vibe from other carriers. Easy 10 hour flight in Business Class. Great food. Good humor as well.

I was lucky to sit in a seat with legroom in economy . The airplane felt like it was 100 years old, seats were very basic, barely reclined. Food was alright , staff was ok but not the friendliest. But all in all ok trip, perfectly on time

Your food is AWEFUL! For Premium Economy this was the WORST FOOD EVER - salad and tomatoes were all spoiled, "chicken" was awful and burnt. This is the WORST FOOD of ANY AIRLINE!!!!!!!!!!!!!!! horrible

Everything you need to know for your flight from London to Sioux Falls

Information on your arrival and departure airports

Sioux Falls (FSD)