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Cheap flights from Sioux Falls to London from $234

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 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Sioux Falls to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:36 am - 9:40 am
FSD
-
LHR
18h 04m
1 stop
United Airlines Logo
6:50 am - 9:52 pm
LHR
-
FSD
21h 02m
2 stops
$678United Airlines
Wed, Aug 12 - Wed, Aug 26
United Airlines Logo
7:40 am - 5:55 am
FSD
-
LHR
16h 15m
2 stops
United Airlines Logo
10:50 am - 9:52 pm
LHR
-
FSD
17h 02m
2 stops
$683United Airlines
Wed, Aug 12 - Wed, Aug 26
Multiple Airlines Logo
12:48 pm - 11:15 am
FSD
-
LHR
16h 27m
1 stop
Multiple Airlines Logo
3:15 pm - 12:27 am
LHR
-
FSD
15h 12m
1 stop
$696Multiple Airlines
Wed, Aug 12 - Wed, Aug 26
Iberia Logo
12:29 pm - 10:30 am
FSD
-
LHR
16h 01m
1 stop
Iberia Logo
6:15 am - 11:06 pm
LHR
-
FSD
22h 51m
2 stops
$722Iberia
Tue, Apr 28 - Tue, May 12
Iberia Logo
12:29 pm - 5:15 pm
FSD
-
LHR
22h 46m
2 stops
Iberia Logo
6:15 am - 11:06 pm
LHR
-
FSD
22h 51m
2 stops
$730Iberia
Tue, Apr 28 - Tue, May 12
Multiple Airlines Logo
1:44 pm - 10:30 am
FSD
-
LHR
14h 46m
2 stops
Multiple Airlines Logo
6:30 am - 3:36 pm
LHR
-
FSD
15h 06m
2 stops
$732Multiple Airlines
Mon, Apr 27 - Fri, May 8
United Airlines Logo
6:37 pm - 9:00 am
FSD
-
LHR
32h 23m
1 stop
United Airlines Logo
11:25 am - 8:04 pm
LHR
-
FSD
14h 39m
1 stop
$737United Airlines
Sat, Aug 1 - Wed, Aug 12
KLM Logo
4:12 pm - 1:05 pm
FSD
-
LHR
14h 53m
1 stop
KLM Logo
6:30 am - 3:32 pm
LHR
-
FSD
15h 02m
2 stops
$738KLM
Wed, Apr 1 - Wed, Apr 8
United Airlines Logo
1:43 pm - 11:35 am
FSD
-
LHR
15h 52m
2 stops
United Airlines Logo
6:50 am - 5:44 pm
LHR
-
FSD
16h 54m
2 stops
$743United Airlines
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
3:10 pm - 11:45 am
FSD
-
LHR
14h 35m
1 stop
United Airlines Logo
6:55 am - 10:42 am
LHR
-
FSD
33h 47m
2 stops
$744United Airlines
Wed, Apr 8 - Fri, Apr 17

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
Aug 12
FSD9:36 amSioux Falls Joe Foss Field
18h 04m
1 stop
LHR9:40 amLondon Heathrow
Aug 26
LHR6:50 amLondon Heathrow
21h 02m
2 stops
FSD9:52 pmSioux Falls Joe Foss Field
$678
United Airlines
Aug 12
FSD7:40 amSioux Falls Joe Foss Field
16h 15m
2 stops
LHR5:55 amLondon Heathrow
Aug 26
LHR10:50 amLondon Heathrow
17h 02m
2 stops
FSD9:52 pmSioux Falls Joe Foss Field
$683
United Airlines
Aug 1
FSD6:37 pmSioux Falls Joe Foss Field
32h 23m
1 stop
LHR9:00 amLondon Heathrow
Aug 12
LHR11:25 amLondon Heathrow
14h 39m
1 stop
FSD8:04 pmSioux Falls Joe Foss Field
$737

Iberia flights from Sioux Falls to London Heathrow Airport

Our best Iberia deals on Sioux Falls to London Heathrow Airport flight tickets
Iberia
Apr 28
FSD12:29 pmSioux Falls Joe Foss Field
16h 01m
1 stop
LHR10:30 amLondon Heathrow
May 12
LHR6:15 amLondon Heathrow
22h 51m
2 stops
FSD11:06 pmSioux Falls Joe Foss Field
$722
Iberia
Apr 28
FSD12:29 pmSioux Falls Joe Foss Field
22h 46m
2 stops
LHR5:15 pmLondon Heathrow
May 12
LHR6:15 amLondon Heathrow
22h 51m
2 stops
FSD11:06 pmSioux Falls Joe Foss Field
$730
Iberia
Apr 1
FSD7:42 pmSioux Falls Joe Foss Field
10h 33m
1 stop
LHR12:15 pmLondon Heathrow
Apr 8
LHR2:45 pmLondon Heathrow
14h 26m
1 stop
FSD11:11 pmSioux Falls Joe Foss Field
$766

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 March 5, 2026.
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 8/12

9:36 am-9:40 am

1 stop18h 04m

London Heathrow

Wed 8/26

6:50 am-9:52 pm

2 stops21h 02m

$678

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 8/12

7:40 am-5:55 am

2 stops16h 15m

London Heathrow

Wed 8/26

10:50 am-9:52 pm

2 stops17h 02m

$683

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 8/12

12:48 pm-11:15 am

1 stop16h 27m

London Heathrow

Wed 8/26

3:15 pm-12:27 am

1 stop15h 12m

$696

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 4/28

12:29 pm-10:30 am

1 stop16h 01m

London Heathrow

Tue 5/12

6:15 am-11:06 pm

2 stops22h 51m

$722

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 4/28

12:29 pm-5:15 pm

2 stops22h 46m

London Heathrow

Tue 5/12

6:15 am-11:06 pm

2 stops22h 51m

$730

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 4/27

1:44 pm-10:30 am

2 stops14h 46m

London Heathrow

Fri 5/8

6:30 am-3:36 pm

2 stops15h 06m

$732

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sat 8/1

6:37 pm-9:00 am

1 stop32h 23m

London Heathrow

Wed 8/12

11:25 am-8:04 pm

1 stop14h 39m

$737

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 4/1

4:12 pm-1:05 pm

1 stop14h 53m

London Heathrow

Wed 4/8

6:30 am-3:32 pm

2 stops15h 02m

$738

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 4/15

1:43 pm-11:35 am

2 stops15h 52m

London Heathrow

Wed 4/22

6:50 am-5:44 pm

2 stops16h 54m

$743

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 4/8

3:10 pm-11:45 am

1 stop14h 35m

London Heathrow

Fri 4/17

6:55 am-10:42 am

2 stops33h 47m

$744

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 typical price of a round-trip flight between Sioux Falls and London Heathrow Airport?

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

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Sioux Falls, with most prices found around $658. If you’re not able to fly to London Heathrow Airport in February, then August is your next best option. Flight prices from Sioux Falls to London Heathrow Airport during August average around $681.

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

Fastest flight time

12h 31m

Direct flights

None
The fastest flight from Sioux Falls to London Heathrow Airport takes 12h 31m
There are no direct flights from Sioux Falls to London Heathrow Airport. There are no popular flight routes from Sioux Falls to London Heathrow Airport.
Search flight deals

  • 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 12h 31m.

  • 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
American AirlinesPriceFrom $658Free CancellationRating
7.1
11,381 reviews
Search American Airlines flights

Traveling to a place near London?

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Stansted
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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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