FSD - LHR

$224 Find Cheap Flights from Sioux Falls to London Heathrow Airport

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 Heathrow departing on 7/27. 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 Heathrow Airport

 
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
$640
Typical prices: $864-$1,053
United Airlines
Fri 5/1Mon 5/4
FSD - LHR • 2 stops
Cheapest one-way
$224
United Airlines
Mon 7/27
FSD - LHR • 1 stop
Top airlines
United Airlines
Cheapest • from $640 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
February
Cheapest • 28% price drop
June
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 Heathrow!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sioux Falls to Heathrow (FSD-LHR)

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

Fri, May 1 - Mon, May 4
United Airlines Logo
1:35 pm - 10:00 am
FSD
-
LHR
38h 25m
2 stops
United Airlines Logo
9:00 am - 11:43 pm
LHR
-
FSD
20h 43m
2 stops
$640United Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
7:43 am - 7:55 am
FSD
-
LHR
18h 12m
1 stop
United Airlines Logo
1:30 pm - 2:32 pm
LHR
-
FSD
30h 02m
2 stops
$644United Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
5:45 am - 5:55 am
FSD
-
LHR
18h 10m
2 stops
United Airlines Logo
8:30 am - 11:44 pm
LHR
-
FSD
20h 14m
2 stops
$649United Airlines
Thu, Feb 26 - Sat, Mar 7
American Airlines Logo
2:08 pm - 8:15 am
FSD
-
LHR
12h 07m
1 stop
American Airlines Logo
8:20 am - 4:49 pm
LHR
-
FSD
14h 29m
1 stop
$662American Airlines
Thu, Feb 26 - Sat, Mar 7
Virgin Atlantic Logo
1:00 pm - 7:05 am
FSD
-
LHR
12h 05m
1 stop
Virgin Atlantic Logo
9:40 am - 10:55 pm
LHR
-
FSD
19h 15m
2 stops
$666Virgin Atlantic
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
9:00 am - 9:40 am
FSD
-
LHR
18h 40m
1 stop
United Airlines Logo
4:40 pm - 8:40 pm
LHR
-
FSD
33h 00m
2 stops
$693United Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
5:45 am - 5:55 am
FSD
-
LHR
18h 10m
2 stops
United Airlines Logo
4:40 pm - 8:40 pm
LHR
-
FSD
33h 00m
2 stops
$698United Airlines
Thu, Apr 30 - Mon, May 4
United Airlines Logo
9:00 am - 12:20 pm
FSD
-
LHR
21h 20m
1 stop
United Airlines Logo
5:50 pm - 9:47 pm
LHR
-
FSD
33h 57m
2 stops
$712United Airlines
Thu, Apr 30 - Mon, May 4
United Airlines Logo
6:00 am - 10:00 am
FSD
-
LHR
22h 00m
2 stops
United Airlines Logo
5:50 pm - 9:47 pm
LHR
-
FSD
33h 57m
2 stops
$715United Airlines
Thu, Apr 30 - Mon, May 4
United Airlines Logo
7:30 am - 6:55 am
FSD
-
LHR
17h 25m
2 stops
United Airlines Logo
5:50 pm - 9:47 pm
LHR
-
FSD
33h 57m
2 stops
$717United Airlines
Booking Insights

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

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

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

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 Heathrow Airport, 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 Heathrow Airport is February, where tickets cost $658 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,635 and $1,234 respectively.

Good to know

Low seasonFebruary
Cheapest flight$224
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 79% increase in price.
Flight from Sioux Falls to London Heathrow Airport

When to book flights from Sioux Falls to Heathrow

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

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

    In the last 3 days, the lowest price for a flight from Sioux Falls to London Heathrow Airport was $224 for a one-way ticket and $640 for a round-trip.

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

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

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

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

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

    oneworld is the only airline alliance operating flights between Sioux Falls and London Heathrow Airport.

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

    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 Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport 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 Heathrow Airport?

    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 Heathrow Airport with an airline and back to Sioux Falls with another airline. Booking your flights between Sioux Falls and LHR can sometimes prove cheaper using this method.

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

    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 Heathrow Airport 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 airline flying from Sioux Falls to Heathrow

 
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 Heathrow? 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.
7.2
American AirlinesOverall score based on 11205 reviews
8.0Crew
6.9Entertainment
6.4Food
7.5Boarding
7.2Comfort
Airline reviews

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

6.0 GoodRicciyah, Jan 2026
PHL - LHR
Read more American Airlines reviews

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

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.

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.

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

Information on your arrival and departure airports