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Cheap flights from Wisconsin to London Heathrow Airport from £242

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LHR
5 Jun — 12 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Wisconsin to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Wisconsin to Heathrow
Explore the most affordable flight options available from Wisconsin to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 May 2026.

Tue 18/819:25
ORD
-
LHR
1 stop10h 30m
Icelandair
Sun 23/821:25
LHR
-
ORD
1 stop30h 00m
Icelandair
Deal found 1/5£564
Mon 10/819:25
ORD
-
LHR
1 stop10h 30m
Icelandair
Sun 23/821:25
LHR
-
ORD
1 stop26h 50m
Icelandair
Deal found 3/5£565
Sun 16/822:25
ORD
-
LHR
1 stop31h 30m
Icelandair
Mon 24/821:25
LHR
-
ORD
1 stop26h 50m
Icelandair
Deal found 4/5£566
Sun 18/1019:15
ORD
-
LHR
1 stop14h 45m
Scandinavian Airlines
Wed 28/1010:20
LHR
-
ORD
1 stop12h 25m
Scandinavian Airlines
Deal found 1/5£567
Sat 18/719:25
ORD
-
LHR
1 stop18h 55m
Icelandair
Mon 24/821:25
LHR
-
ORD
1 stop30h 00m
Icelandair
Deal found 1/5£568
Mon 28/1219:20
ORD
-
LHR
2 stops17h 30m
Scandinavian Airlines
Mon 11/119:50
LHR
-
ORD
2 stops26h 55m
Scandinavian Airlines
Deal found 3/5£572
Sun 18/1019:15
ORD
-
LHR
2 stops15h 10m
Scandinavian Airlines
Sun 1/1106:40
LHR
-
ORD
2 stops16h 05m
Scandinavian Airlines
Deal found 4/5£572
Sun 16/822:25
ORD
-
LHR
1 stop31h 30m
Icelandair
Sat 22/821:25
LHR
-
ORD
1 stop26h 50m
Icelandair
Deal found 2/5£573
Sun 13/914:51
GRB
-
LHR
1 stop10h 49m
Iberia
Wed 23/906:15
LHR
-
GRB
2 stops22h 52m
Iberia
Deal found 4/5£637
Mon 21/907:00
MKE
-
LHR
2 stops29h 30m
Scandinavian Airlines
Mon 19/1007:05
LHR
-
MKE
2 stops19h 03m
Scandinavian Airlines
Deal found 4/5£639
Tue 6/1020:16
MKE
-
LHR
1 stop9h 59m
British Airways
Wed 14/1006:15
LHR
-
MKE
2 stops19h 25m
British Airways
Deal found 2/5£643
Wed 19/813:32
MSN
-
LHR
1 stop14h 58m
Iberia
Wed 26/820:00
LHR
-
MSN
2 stops28h 15m
Iberia
Deal found 2/5£646

Find flight deals from Wisconsin to Heathrow

Keep the following information in mind while searching for Wisconsin to Heathrow flight deals. Data was last updated 6 May 2026.

Round-trip from

£564

One-way from

£242

Popular in

June

Cheapest in

January

Average price

£768
Icelandair
  • Icelandair
  • 17/8-25/8
  • 2 total stops
  • 37h 20m total
  • Wisconsin to London
Search Deals
British Airways
  • British Airways
  • 26/8
  • 1 total stop
  • 13h 48m total
  • Wisconsin to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£113 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Wisconsin to Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 6 May 2026.
Use the filters below to find and compare flights from Wisconsin to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 7/10

21:30-11:55

Nonstop8h 25m

London Heathrow

Thu 15/10

10:50-18:15

1 stop13h 25m

£635

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Mon 7/9

05:30-06:25

1 stop18h 55m

London Heathrow

Fri 25/9

06:30-16:33

2 stops16h 03m

£648

MadisonLondon

MSN - LHR

MSNLHR

Madison Truax Field

Mon 3/8

07:03-07:10

1 stop18h 07m

London Heathrow

Wed 2/9

06:30-17:04

2 stops16h 34m

£648

MadisonLondon

MSN - LHR

MSNLHR

Madison Truax Field

Wed 19/8

15:45-10:40

1 stop12h 55m

London Heathrow

Tue 25/8

06:30-17:48

2 stops17h 18m

£649

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Sun 16/8

06:45-07:10

2 stops18h 25m

London Heathrow

Wed 26/8

09:55-21:58

2 stops18h 03m

£651

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Sun 13/9

10:50-10:20

2 stops17h 30m

London Heathrow

Wed 23/9

06:30-21:58

2 stops21h 28m

£652

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 12/8

18:15-08:30

Nonstop8h 15m

London Heathrow

Thu 20/8

11:05-14:10

Nonstop9h 05m

£656

La CrosseLondon

LSE - LHR

LSELHR

La Crosse

Tue 20/10

18:19-18:55

2 stops18h 36m

London Heathrow

Wed 4/11

11:25-23:49

2 stops18h 24m

£657

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Wed 14/10

05:30-06:25

1 stop18h 55m

London Heathrow

Tue 27/10

08:55-21:57

1 stop18h 02m

£670

La CrosseLondon

LSE - LHR

LSELHR

La Crosse

Tue 13/10

11:18-06:50

1 stop13h 32m

London Heathrow

Tue 20/10

11:10-23:19

1 stop18h 09m

£670

Flights are sorted by cheapest return flights first.

Deals found on 5/5

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Wisconsin to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Wisconsin with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Wisconsin to London Heathrow Airport

How far ahead should I book a flight from Wisconsin to London Heathrow Airport?

Booking 84 days in advance of your planned departure date is, on average, the best time to get cheap flights from Wisconsin to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Wisconsin to London Heathrow Airport?

Currently, October is the cheapest month in which you can book a flight from Wisconsin to London Heathrow Airport (average of £348). Flying from Wisconsin to London Heathrow Airport in June is currently the most expensive (average of £795). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Wisconsin to London Heathrow Airport?

Related info for your journey

Find useful and relevant information for your journey from Wisconsin to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Wisconsin to London Heathrow Airport?

    For as low as £635, United Airlines can have you in London Heathrow Airport from Wisconsin in 8h 25m. Wisconsin and London Heathrow Airport are separated by a distance of 3939 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Wisconsin to London Heathrow Airport?

    When deciding which route to take from Wisconsin to London Heathrow Airport consider Chicago O'Hare Intl - London Heathrow, Minneapolis St Paul - London Heathrow or Milwaukee-Mitchell - London Heathrow as they are the most popular.

  • Can I find deals for flights from Wisconsin to Heathrow that include hotel bookings?

    Yes. In addition to deals on Wisconsin to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Wisconsin to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Wisconsin to Heathrow.

  • Can I find deals for business class flights from Wisconsin to Heathrow?

    Yes. Cheapflights offers flight deals from Wisconsin to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Wisconsin to London Heathrow Airport?

    Currently, October is the cheapest month in which you can book a flight from Wisconsin to London Heathrow Airport (average of £348). Flying from Wisconsin to London Heathrow Airport in June is currently the most expensive (average of £795). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Ilford
Slough
Hayes
Brentford
Colchester
Romford
Watford
Kingston upon Thames
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

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Alternative routes for Wisconsin to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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John F Kennedy Intl to Heathrow flights
John F Kennedy Intl to Gatwick flights
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San Francisco to Heathrow flights
O'Hare Intl to Heathrow flights
Boston to Gatwick flights
Newark to Stansted flights
Dallas/Fort Worth to Heathrow flights
Newark to Luton flights
Seattle to Heathrow flights
Orlando to Heathrow flights
Atlanta to Heathrow flights
Hobby to Heathrow flights
Boston to London City flights
Dulles Intl to Gatwick flights
Los Angeles to Gatwick flights
LaGuardia to Stansted flights
Reagan-National to Heathrow flights
Dulles Intl to London City flights
Miami to Heathrow flights
Boston to Stansted flights
Los Angeles to Stansted flights
Denver to Heathrow flights
Los Angeles to London City flights
Baltimore to Gatwick flights
George Bush Intcntl to Heathrow flights
Reagan-National to Gatwick flights
San Francisco to Gatwick flights
O'Hare Intl to Gatwick flights
Philadelphia to Heathrow flights
O'Hare Intl to Stansted flights
San Francisco to London City flights
O'Hare Intl to London City flights
San Francisco to Stansted flights
Minneapolis to Heathrow flights
Tampa to Heathrow flights
Orlando to Gatwick flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Wisconsin to Heathrow?

Cheapflights helps you search for flights from Wisconsin to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Wisconsin to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from Wisconsin by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Wisconsin to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Wisconsin to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Wisconsin to Heathrow become cheaper?

Not ready to book yet? You can track prices for flights from Wisconsin to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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