FSD - LON

$384 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 9/3. 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

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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Everything you should know

Cheapest round-trip
$915
Typical prices: $800-$663
Lufthansa
Sat 9/12Tue 9/22
FSD - LHR • 1 stop
Cheapest one-way
$384
American Airlines
Thu 9/3
FSD - LHR • 1 stop
Top airlines
Cheapest • from $915 (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 Sioux Falls and London. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $602 (round-trip)
Shortest trip • 11h 10m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Booking Insights
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

Sat, Sep 12 - Tue, Sep 22
Lufthansa Logo
6:41 pm - 9:00 am
FSD
-
LHR
32h 19m
1 stop
Lufthansa Logo
6:55 am - 8:07 pm
LHR
-
FSD
19h 12m
2 stops
$915Lufthansa
Sat, Sep 12 - Tue, Sep 22
Lufthansa Logo
6:41 pm - 6:45 am
FSD
-
LHR
30h 04m
1 stop
Lufthansa Logo
11:05 am - 6:06 pm
LHR
-
FSD
13h 01m
1 stop
$938Lufthansa
Sat, Sep 12 - Tue, Sep 22
British Airways Logo
6:00 pm - 6:50 am
FSD
-
LHR
30h 50m
1 stop
British Airways Logo
1:10 pm - 11:51 pm
LHR
-
FSD
16h 41m
1 stop
$948British Airways
Sat, Sep 12 - Tue, Sep 22
Delta Logo
1:20 pm - 1:15 pm
FSD
-
LHR
17h 55m
2 stops
Delta Logo
8:40 am - 10:09 pm
LHR
-
FSD
19h 29m
2 stops
$959Delta
Sat, Sep 12 - Tue, Sep 22
Lufthansa Logo
6:41 pm - 5:55 pm
FSD
-
LCY
17h 14m
2 stops
Lufthansa Logo
9:15 am - 10:52 pm
LCY
-
FSD
19h 37m
2 stops
$985Lufthansa
Sat, Oct 10 - Sat, Oct 17
United Airlines Logo
6:20 pm - 6:30 am
FSD
-
LHR
30h 10m
2 stops
United Airlines Logo
11:25 am - 8:02 pm
LHR
-
FSD
14h 37m
1 stop
$987United Airlines
Sat, Oct 10 - Sat, Oct 17
United Airlines Logo
6:20 pm - 9:20 pm
FSD
-
LHR
21h 00m
2 stops
United Airlines Logo
7:45 am - 5:34 pm
LHR
-
FSD
15h 49m
2 stops
$988United Airlines
Fri, Sep 4 - Sun, Sep 13
United Airlines Logo
6:50 pm - 12:25 pm
FSD
-
LHR
11h 35m
1 stop
United Airlines Logo
6:50 am - 10:52 pm
LHR
-
FSD
22h 02m
2 stops
$1,004United Airlines
Fri, Sep 4 - Sun, Sep 13
American Airlines Logo
5:29 pm - 11:15 am
FSD
-
LHR
11h 46m
1 stop
American Airlines Logo
8:55 am - 5:19 pm
LHR
-
FSD
14h 24m
1 stop
$1,005American Airlines
Fri, Jul 3 - Wed, Jul 8
Delta Logo
1:53 pm - 9:25 am
FSD
-
LGW
13h 32m
2 stops
Delta Logo
10:25 am - 11:06 pm
LGW
-
FSD
18h 41m
2 stops
$1,149Delta
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?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Sioux Falls to London departing in September.

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 July, where tickets cost $511 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $950 and $874 respectively.

Good to know

Low seasonSeptember
Cheapest flight$384
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 21% increase in price.
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 $384 for a one-way ticket and $915 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?

    Star Alliance, and oneworld are the airline alliances operating flights between Sioux Falls and London, with Star Alliance 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 $938 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 $950 and an overall rating of 7.1.

  • 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 9749 reviews
6.6Food
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
Airline reviews

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

10.0 ExcellentSteve, May 2026
SFO - SYD
Read more United Airlines reviews

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Check in was chaotic with only one counter for business class and first class. The luggage conveyor belt at JFK airport was broken so the flight departure was delayed which made the flight stressful as I had a tight connection. Although the captain said they could make up the delay, they didn’t do so.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

Lost of requested seat assignments. Lost my husband's meal choice

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

We had a delay, but thankfully I made it to my connection. Overall it went smooth

The flight had a delay but I made it to my connection. Flight was smooth overall

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

This flight is a quick way to get to Chicago, but a bit expensive.

It's a long flight and that is always difficult. I was comfortable and well. The movies available were great and the crew was good.

Premium Economy Good crew, good service, excellent food. Seat back screen just not bright enough.

Flight was delayed an no one cares, or try to help passengers to get the conexión.

Our flight was cancelled while we are on our way to the airport. So, no notice. We were rescheduled to another airline with a 2 hour later takeoff and so arrived at our destination on time. We pre-paid American Airlines $190 to upgrade our seats. No refund. So no use for AA or Kayak.

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

The business class layout of chairs was weired. You are sitting directly across stranger.,

We did not have enough time to make our connecting flight. As a result, we were put onto a different airline for our second leg. The different airline was NOT comparable to British Airlines, and our arrival was significantly delayed. The actual flight on BA was amazing.

Tv screens and movie selection v good. Friendly staff. They were really worried about max capacity and room for carryons. That is never fun but i had no problem finding space when I boarded.

My flight to London from Philadelphia was cancelled due to weather.

Disliked having to wait a little longer to disembark from the plan when we landed in London

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

Information on your arrival and departure airports