FSD - LON

$594 Find Cheap Flights from Sioux Falls to London

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux Falls to London departing on 8/25. 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

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to London, as well as popular online travel agencies
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Flight Deals

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

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

Mon, Aug 25 - Tue, Sep 9
Virgin Atlantic Logo
6:04 pm - 1:10 pmFSD-LHR
13h 06m1 stop
Virgin Atlantic Logo
6:15 am - 11:46 pmLHR-FSD
23h 31m2 stops
$594Virgin Atlantic
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Mon, Aug 25 - Tue, Sep 9
Virgin Atlantic Logo
2:30 pm - 1:30 pmFSD-LHR
17h 00m2 stops
Virgin Atlantic Logo
4:05 pm - 11:46 pmLHR-FSD
37h 41m2 stops
$596Virgin Atlantic
Find Deal
Mon, Aug 25 - Tue, Sep 9
Virgin Atlantic Logo
6:04 pm - 1:10 pmFSD-LHR
13h 06m1 stop
Virgin Atlantic Logo
9:20 am - 11:06 pmLHR-FSD
19h 46m1 stop
$607Virgin Atlantic
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Tue, Oct 7 - Fri, Oct 17
Delta Logo
4:24 pm - 1:10 pmFSD-LHR
14h 46m1 stop
Delta Logo
9:20 am - 10:56 pmLHR-FSD
19h 36m1 stop
$641Delta
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Tue, Oct 7 - Fri, Oct 17
Delta Logo
1:35 pm - 1:30 pmFSD-LHR
17h 55m2 stops
Delta Logo
11:45 am - 10:57 pmLHR-FSD
17h 12m2 stops
$646Delta
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Wed, Aug 27 - Mon, Sep 1
KLM Logo
2:30 pm - 1:10 pmFSD-LHR
16h 40m1 stop
KLM Logo
12:25 pm - 11:46 pmLHR-FSD
17h 21m1 stop
$691KLM
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Mon, Oct 6 - Tue, Oct 14
United Airlines Logo
11:19 am - 8:20 amFSD-LHR
15h 01m1 stop
United Airlines Logo
5:40 pm - 2:37 pmLHR-FSD
26h 57m2 stops
$735United Airlines
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Wed, Oct 1 - Wed, Oct 8
United Airlines Logo
8:00 am - 12:20 pmFSD-LHR
22h 20m2 stops
United Airlines Logo
7:25 am - 5:27 pmLHR-FSD
16h 02m2 stops
$736United Airlines
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Wed, Oct 1 - Wed, Oct 8
American Airlines Logo
7:00 am - 6:25 amFSD-LHR
17h 25m1 stop
American Airlines Logo
8:20 am - 4:35 pmLHR-FSD
14h 15m1 stop
$751American Airlines
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Thu, Oct 2 - Thu, Oct 9
American Airlines Logo
5:19 pm - 12:45 pmFSD-LHR
13h 26m1 stop
American Airlines Logo
8:20 am - 4:37 pmLHR-FSD
14h 17m1 stop
$801American Airlines
Find Deal
Booking Insights

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

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

How much is a round-trip flight from Sioux Falls to London?

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sioux Falls to London, 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 Sioux Falls to London is March, where tickets cost $689 (return) on average. On the other hand, the most expensive months are January and June, where the average cost of round-trip tickets is $1,999 and $1,326 respectively.

Good to know

Low seasonMarch
Cheapest flight$594
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Sioux Falls to London Heathrow Airport

When to book flights from Sioux Falls to London

Are your dates flexible? Find out the best times to travel from Sioux Falls 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 Sioux Falls to London

  • What is the cheapest flight from Sioux Falls to London?

    In the last 3 days, the lowest price for a flight from Sioux Falls to London was $3,665 for a one-way ticket and $594 for a round-trip.

  • Do I need a passport to fly between Sioux Falls and London?

    Yes, you’ll need a passport to travel to London from Sioux Falls.

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

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

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

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Sioux Falls and London, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Sioux Falls to London, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Sioux Falls to London are United Airlines and American Airlines. With an average price for the route of $1,028 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $990 and an overall rating of 7.2.

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sioux Falls 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 Sioux Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Sioux Falls to London

 
See real verified KAYAK customer reviews for airlines flying from Sioux Falls 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 Sioux Falls 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 8928 reviews
6.6Food
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

10.0 ExcellentAnonymous, Aug 2025TPA - IAD
Read more United Airlines reviews

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

The flight was comfortable with the exit row and great service

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

The service was good, the food could have been better.

Staff was rude. Didn’t give water for 2 hours. Worst service

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

More choices on menu. Seemed only thing offered was Scottish, and while that’s good for the Scot’s it doesn’t help the Americans who don’t like that food. And I really hate it when, during sleep time the attendants have a very loud conversation right over you. Lastly, I paid 5000 dollars for business class, and having to pay more to choose my seat early is really an insult. Seems greedy

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

Again flight was awesome except British Airways lost both gate checked luggage’s. Still missing

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

Crew was great and responsive. Entertainment quit working with about 4 hours remaining on the flight. My seat cushion was broken.

Not very good , the stewardess were unfriendly and they don't like to be bothered. Cos was a night flight and they need to sleep.

British Airways staff are very polite and willing to help.

I had a carry on and a personal bag. I put my personal item under my seat and on way to the seat I put my bag up. I usually close my eyes and rest as I was on call for last 36 hours. I heard very loud announcements that someone needs to identify their bag. Pretty sure it was not mine until the hostess pointed out my jacket details attached to the bag. I asked why she got my bag out. I got berated and did not want to create a scene. But this person needs to be talked to.

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

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