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Cheap flights from Sioux Falls to London from $319

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux Falls to London departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Sioux Falls to London

Cheap round-trip flights

United Airlines Logo
9:14 am - 7:10 amFSD-LHR
15h 56m2 stops
United Airlines Logo
9:00 am - 9:47 pmLHR-FSD
18h 47m2 stops
$732United Airlines
Find Deal
Wed, Jan 7 - Wed, Jan 14
United Airlines Logo
3:12 pm - 11:45 amFSD-LHR
14h 33m1 stop
United Airlines Logo
5:40 pm - 10:22 pmLHR-FSD
34h 42m2 stops
$735United Airlines
Find Deal
Tue, Oct 7 - Fri, Oct 17
United Airlines Logo
11:52 am - 12:20 pmFSD-LHR
18h 28m1 stop
United Airlines Logo
9:00 am - 10:22 pmLHR-FSD
19h 22m2 stops
$736United Airlines
Find Deal
Wed, Oct 1 - Wed, Oct 8
United Airlines Logo
7:45 am - 7:10 amFSD-LHR
17h 25m2 stops
United Airlines Logo
8:30 am - 9:47 pmLHR-FSD
19h 17m2 stops
$739United Airlines
Find Deal
Tue, Jan 6 - Thu, Jan 15
Lufthansa Logo
3:16 pm - 6:45 pmFSD-LHR
21h 29m2 stops
Lufthansa Logo
7:15 pm - 8:46 pmLHR-FSD
31h 31m2 stops
$770Lufthansa
Find Deal
Wed, Jan 7 - Mon, Jan 12
Delta Logo
5:20 am - 6:25 amFSD-LHR
19h 05m1 stop
Delta Logo
6:20 am - 7:18 pmLHR-FSD
18h 58m2 stops
$803Delta
Find Deal
Thu, Jan 8 - Thu, Jan 15
Delta Logo
5:24 am - 7:50 amFSD-LHR
20h 26m1 stop
Delta Logo
6:20 am - 10:58 pmLHR-FSD
22h 38m2 stops
$808Delta
Find Deal
Sun, Jan 4 - Tue, Jan 13
KLM Logo
5:20 am - 9:00 amFSD-LHR
21h 40m1 stop
KLM Logo
6:30 am - 3:33 pmLHR-FSD
15h 03m2 stops
$817KLM
Find Deal
Thu, Jan 8 - Tue, Jan 13
Lufthansa Logo
1:45 pm - 10:50 amFSD-LHR
15h 05m2 stops
Lufthansa Logo
8:45 am - 9:47 pmLHR-FSD
19h 02m2 stops
$992Lufthansa
Find Deal
Thu, Jan 8 - Tue, Jan 13
American Airlines Logo
12:17 pm - 8:35 amFSD-LHR
14h 18m1 stop
American Airlines Logo
8:20 am - 4:56 pmLHR-FSD
14h 36m1 stop
$1,191American Airlines
Find Deal
Fri, Dec 19 - Wed, Dec 24

United Airlines flights from Sioux Falls to London Heathrow Airport

Our best United Airlines deals on Sioux Falls to London Heathrow Airport flight tickets
United Airlines
Jan 7
FSD9:14 amSioux Falls Joe Foss Field
15h 56m
2 stops
LHR7:10 amLondon Heathrow
Jan 14
LHR9:00 amLondon Heathrow
18h 47m
2 stops
FSD9:47 pmSioux Falls Joe Foss Field
$732
Find similar
United Airlines
Oct 7
FSD3:12 pmSioux Falls Joe Foss Field
14h 33m
1 stop
LHR11:45 amLondon Heathrow
Oct 17
LHR5:40 pmLondon Heathrow
34h 42m
2 stops
FSD10:22 pmSioux Falls Joe Foss Field
$735
Find similar
United Airlines
Oct 1
FSD11:52 amSioux Falls Joe Foss Field
18h 28m
1 stop
LHR12:20 pmLondon Heathrow
Oct 8
LHR9:00 amLondon Heathrow
19h 22m
2 stops
FSD10:22 pmSioux Falls Joe Foss Field
$736
Find similar

Lufthansa flights from Sioux Falls to London Heathrow Airport

Our best Lufthansa deals on Sioux Falls to London Heathrow Airport flight tickets
Lufthansa
Jan 7
FSD3:16 pmSioux Falls Joe Foss Field
21h 29m
2 stops
LHR6:45 pmLondon Heathrow
Jan 12
LHR7:15 pmLondon Heathrow
31h 31m
2 stops
FSD8:46 pmSioux Falls Joe Foss Field
$770
Find similar
Lufthansa
Aug 21
FSD11:20 amSioux Falls Joe Foss Field
18h 25m
1 stop
LHR11:45 amLondon Heathrow
Sep 5
LHR9:30 amLondon Heathrow
16h 59m
2 stops
FSD8:29 pmSioux Falls Joe Foss Field
$947
Find similar
Lufthansa
Jan 8
FSD1:45 pmSioux Falls Joe Foss Field
15h 05m
2 stops
LHR10:50 amLondon Heathrow
Jan 13
LHR8:45 amLondon Heathrow
19h 02m
2 stops
FSD9:47 pmSioux Falls Joe Foss Field
$992
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Sioux Falls to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Sioux Falls to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 1/7

9:14 am-7:10 am

2 stops15h 56m

London Heathrow

Wed 1/14

9:00 am-9:47 pm

2 stops18h 47m

$732

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 10/7

3:12 pm-11:45 am

1 stop14h 33m

London Heathrow

Fri 10/17

5:40 pm-10:22 pm

2 stops34h 42m

$735

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 10/1

11:52 am-12:20 pm

1 stop18h 28m

London Heathrow

Wed 10/8

9:00 am-10:22 pm

2 stops19h 22m

$736

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 1/6

7:45 am-7:10 am

2 stops17h 25m

London Heathrow

Thu 1/15

8:30 am-9:47 pm

2 stops19h 17m

$739

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 1/7

3:16 pm-6:45 pm

2 stops21h 29m

London Heathrow

Mon 1/12

7:15 pm-8:46 pm

2 stops31h 31m

$770

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Thu 1/8

5:20 am-6:25 am

1 stop19h 05m

London Heathrow

Thu 1/15

6:20 am-7:18 pm

2 stops18h 58m

$803

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 1/4

5:24 am-7:50 am

1 stop20h 26m

London Heathrow

Tue 1/13

6:20 am-10:58 pm

2 stops22h 38m

$808

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Thu 1/8

5:20 am-9:00 am

1 stop21h 40m

London Heathrow

Tue 1/13

6:30 am-3:33 pm

2 stops15h 03m

$817

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Thu 1/8

1:45 pm-10:50 am

2 stops15h 05m

London Heathrow

Tue 1/13

8:45 am-9:47 pm

2 stops19h 02m

$992

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Fri 12/19

12:17 pm-8:35 am

1 stop14h 18m

London Heathrow

Wed 12/24

8:20 am-4:56 pm

1 stop14h 36m

$1,191

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Sioux Falls to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Heathrow Airport?

The month of August is, on average, the cheapest month to fly to London Heathrow Airport from Sioux Falls, with most prices found around $681. If you’re not able to fly to London Heathrow Airport in August, then September is your next best option. Flight prices from Sioux Falls to London Heathrow Airport during September average around $773.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $740. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,261.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Sioux Falls to London Heathrow Airport in the afternoon for as low as $836. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $1,094.

When to book flights from Sioux Falls to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Sioux Falls to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sioux Falls to London Heathrow Airport (FSD to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sioux Falls to London Heathrow Airport

Best Price Found

$319

Fastest flight time

10h 39m

Direct flights

None
The best one-way flight to London Heathrow Airport from Sioux Falls in the past 72 hours is $319. The best round-trip flight deal from Sioux Falls to London Heathrow Airport found on momondo in the last 72 hours is $732.
The fastest flight from Sioux Falls to London Heathrow Airport takes 10h 39m
There are no direct flights from Sioux Falls to London Heathrow Airport. Popular non-direct route for this connection is Sioux Falls Joe Foss Field Airport - London Heathrow Airport.
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  • How far is Sioux Falls Joe Foss Field to London Heathrow by plane?

    A flight from Sioux Falls Joe Foss Field to London Heathrow will travel around 4190.1 mi. In terms of flight time, this usually takes a little over 10h 39m.

  • When did momondo last update prices for flights from Sioux Falls Joe Foss Field Airport to London Heathrow Airport?

    Prices for flights from Sioux Falls Joe Foss Field Airport to London Heathrow Airport refresh daily.

  • How many operators does momondo search for flights from Sioux Falls Joe Foss Field Airport to London Heathrow Airport?

  • How old do you have to be to fly from Sioux Falls Joe Foss Field Airport to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux Falls Joe Foss Field Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sioux Falls to London Heathrow Airport?

Best airlines flying from Sioux Falls to London Heathrow Airport

Compare and see reviews for airlines that fly from Sioux Falls to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $679Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $750Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Dover
Slough
Luton
Guildford
Milton Keynes
Dartford
Crawley
Hayes
Chelmsford
Stansted
Salisbury
Brentwood
Ilford
Swindon
Colchester
Folkestone
Stratford-upon-Avon
Watford

Why use momondo?

Why should I use momondo to find a flight deal from Sioux Falls to London?

It is quick and easy to find Sioux Falls to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Sioux Falls to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Sioux Falls to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Sioux Falls to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Sioux Falls.

I’m not ready to book a flight from Sioux Falls to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Sioux Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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