FSD - LON

$664 Find Cheap Flights from Sioux Falls to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux Falls to London departing on 10/8. 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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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

Sun, Nov 16 - Sun, Nov 23
KLM Logo
1:30 pm - 7:05 amFSD-LHR
11h 35m1 stop
KLM Logo
8:40 am - 7:35 pmLHR-FSD
16h 55m2 stops
$664KLM
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Sun, Nov 16 - Sun, Nov 23
United Airlines Logo
6:23 pm - 7:10 amFSD-LHR
30h 47m2 stops
United Airlines Logo
6:50 am - 5:37 pmLHR-FSD
16h 47m2 stops
$670United Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
Delta Logo
5:20 am - 9:00 amFSD-LHR
22h 40m1 stop
Delta Logo
6:30 am - 10:58 pmLHR-FSD
22h 28m2 stops
$779Delta
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Fri, Mar 27 - Tue, Mar 31
Delta Logo
5:20 am - 9:00 amFSD-LHR
22h 40m1 stop
Delta Logo
6:30 am - 7:18 pmLHR-FSD
18h 48m2 stops
$780Delta
Find Deal
Fri, Mar 27 - Tue, Mar 31
Virgin Atlantic Logo
5:20 am - 9:00 amFSD-LHR
22h 40m1 stop
Virgin Atlantic Logo
12:25 pm - 7:18 pmLHR-FSD
12h 53m1 stop
$808Virgin Atlantic
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Fri, Mar 27 - Tue, Mar 31
Virgin Atlantic Logo
1:20 pm - 9:00 amFSD-LHR
14h 40m2 stops
Virgin Atlantic Logo
8:40 am - 7:18 pmLHR-FSD
16h 38m2 stops
$818Virgin Atlantic
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Fri, Oct 31 - Tue, Nov 11
Multiple Airlines Logo
11:17 am - 11:40 amFSD-LCY
19h 23m2 stops
Multiple Airlines Logo
5:45 pm - 9:46 pmLCY-FSD
34h 01m2 stops
$840Multiple Airlines
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Fri, Oct 31 - Tue, Nov 11
Multiple Airlines Logo
8:00 am - 11:40 amFSD-LCY
22h 40m3 stops
Multiple Airlines Logo
5:15 pm - 2:40 pmLCY-FSD
27h 25m2 stops
$870Multiple Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
6:56 am - 7:30 amFSD-LGW
19h 34m2 stops
American Airlines Logo
2:30 pm - 10:14 pmLGW-FSD
37h 44m2 stops
$989American Airlines
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Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
6:56 am - 7:30 amFSD-LGW
19h 34m2 stops
American Airlines Logo
2:30 pm - 2:48 pmLGW-FSD
30h 18m2 stops
$998American Airlines
Find Deal

Everything you should know

Top airlines
KLM
Cheapest • from $664 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$664
Typical prices: $770-874
KLM
Sun 11/16Sun 11/23
FSD - LHR • 1 stop
Cheapest one-way
$544
Lufthansa
Wed 10/8
FSD - LHR • 2 stops
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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.

Which airlines provide the cheapest flights from Sioux Falls to London?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Sioux Falls to London were found on KLM ($664) and United Airlines ($670).

Which airlines fly non-stop between Sioux Falls and London?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Sioux Falls to London.

There are 2 airlines that fly nonstop from Sioux Falls to London. They are American Airlines and Delta. The cheapest airline for this route is Delta, with the best round-trip deal found costing $679. On average, the best prices for this route can be found at Delta.

Good to know

Low seasonMay
Cheapest flight$544
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 19% 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 $544 for a one-way ticket and $664 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?

    SkyTeam, and oneworld 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, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Sioux Falls to London are Delta and United Airlines. With an average price for the route of $1,022 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,028 and an overall rating of 7.4.

  • 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 3 airlines serving 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.
7.9
DeltaOverall score based on 7962 reviews
7.3Food
8.5Crew
7.9Comfort
7.9Entertainment
8.2Boarding
Airline reviews

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

4.0 OkayPeter, Sep 2025SLC - SAN
Read more Delta reviews

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

Cramped seating for me. Luckily it wasn’t a long flight

Lounge in Lagos is terrible, food on board from Lagos to Atlanta was horrible. Only bright spot the cabin crew were awesome.

The airport was reasonably clean. The boarding process reasonably efficient. The cabin crew was efficient, polite but not that friendly. The food quality was unremarkable and the choices were awful . There was either a so so chicken dish or a “ vegetarian “ option which was really cheap carbohydrates drowned in cheese. Signing onto i flight wifi was not straightforward. Overall it was a very average experience

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

It would have been better if the crew has supported my husband's reasons for needing to keep the space clear around his feet, rather than insisting that he put his knapsack in that space.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Subject: Formal Complaint: Discriminatory and Unprofessional Conduct – Request for Immediate Action & Compensation Dear [Airline Customer Relations Team], I am writing to file a formal complaint regarding my recent travel experience with [Airline], which was by far the worst I have ever encountered. What occurred was not only unprofessional, but in several instances discriminatory, unsafe, and unacceptable. On the first leg of my trip, I arrived only four minutes past check-in. Instead of making any attempt to resolve the matter, your representative flatly denied me boarding and made me wait while she attended to passengers who arrived after me. By the time a manager intervened, it was too late to board, costing me time, money, and unnecessary frustration. The second leg of my trip (Chicago–San Francisco) raised even more serious concerns. From the outset, it was apparent that the staff—particularly two attendants—prioritized Caucasian passengers while dismissing African American and minority passengers. • When a Caucasian passenger in the exit row refused to comply with federal safety requirements, I, as a first responder, immediately offered to switch seats and assume the responsibility. My offer was blatantly ignored, and instead, a Caucasian passenger seated further up was chosen. This was discriminatory and deeply insulting, especially as I was actively de-escalating the situation that could have delayed the flight further. • During a lengthy tarmac delay of over 90 minutes, passengers were given conflicting and unreasonable instructions that created unnecessary distress and tension. • Throughout the flight, a visibly intoxicated passenger directly in front of me was disruptive, rude to others, failed to comply with seatbelt and electronic device rules, and yet faced no enforcement from the crew. In stark contrast, I was singled out for repeated compliance checks even though I was following every rule. This unequal treatment was so obvious that multiple passengers around me spoke up in my defense. This pattern of behavior demonstrated a clear lack of professionalism, disregard for passenger safety, and discriminatory treatment. I expect far better from an airline of your stature. As a paying customer subjected to this unacceptable treatment, I am formally requesting: 1. A full investigation into the conduct of the staff on both flights. 2. A written apology acknowledging the discriminatory and unprofessional behavior I endured. 3. Appropriate compensation for the distress, inconvenience, and mishandling of my travel. If this matter is not addressed promptly and thoroughly, I will have no choice but to escalate my complaint further, including filing with the U.S. Department of Transportation and sharing my experience through other channels. I trust [Airline] will take this complaint seriously and provide a timely resolution.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

Check in was quick and easy during early hours. Flight was on time, and customer services was a plus.

Terrible. They wouldn't allow me on my flight on the 14th..

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

The flight was canceled 3 hours after original take off time

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

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