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Cheap flights from Wisconsin to London Heathrow Airport from £165

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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LHR
15 Sep — 22 Sep1
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 16 August 2026.

Thu 22/1019:30 -
1 stop10h 25m
Wed 28/1012:15 -
1 stop11h 10m
Deal found 12/8£432
Wed 28/1019:25 -
1 stop10h 25m
Wed 4/1112:15 -
1 stop11h 10m
Deal found 13/8£433
Wed 11/1118:25 -
1 stop10h 25m
Sun 15/1112:15 -
1 stop11h 10m
Deal found 12/8£434
Sat 3/1019:30 -
1 stop10h 25m
Sat 10/1021:25 -
1 stop26h 55m
Deal found 12/8£435
Mon 19/1019:30 -
1 stop10h 25m
Wed 28/1012:15 -
1 stop11h 10m
Deal found 12/8£438
Mon 19/1019:30 -
1 stop10h 25m
Tue 27/1020:35 -
1 stop26h 50m
Deal found 12/8£440
Fri 23/1019:30 -
1 stop10h 25m
Wed 28/1012:15 -
1 stop11h 10m
Deal found 12/8£454
Sat 17/1019:30 -
1 stop10h 25m
Fri 30/1012:15 -
1 stop11h 10m
Deal found 12/8£455
Sat 17/1019:30 -
1 stop10h 25m
Thu 29/1020:35 -
1 stop26h 50m
Deal found 12/8£457
Sat 26/919:30 -
1 stop10h 25m
Sat 3/1021:25 -
1 stop26h 55m
Deal found 12/8£460
Sun 22/1118:25 -
1 stop19h 05m
Fri 27/1112:15 -
1 stop11h 10m
Deal found 12/8£471
Sun 13/919:30 -
1 stop10h 25m
Tue 22/921:25 -
1 stop26h 55m
Deal found 13/8£488

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 16 August 2026.

Round-trip from

£432

One-way from

£165

Popular in

June

Cheapest in

January

Average price

£581
Icelandair
  • Icelandair
  • 22/10-28/10
  • 2 total stops
  • 21h 35m total
  • Wisconsin to London
Search Deals
Icelandair
  • Icelandair
  • 10/10
  • 1 total stop
  • 10h 25m total
  • Wisconsin to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£143 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 16 August 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

AppletonLondon

ATW Appleton Intl - LHR London Heathrow

ATWLHR

Appleton Intl

Sun 15/11

16:55-07:55

1 stop33h 00m

London Heathrow

Wed 18/11

06:50-17:56

2 stops17h 06m

£544

Green BayLondon

GRB Green Bay Austin-Straubel - LHR London Heathrow

GRBLHR

Green Bay Austin-Straubel

Sun 6/12

10:45-10:50

2 stops18h 05m

London Heathrow

Tue 8/12

06:50-10:30

2 stops33h 40m

£547

MilwaukeeLondon

MKE Milwaukee-Mitchell - LHR London Heathrow

MKELHR

Milwaukee-Mitchell

Mon 11/1

12:14-07:55

1 stop13h 41m

London Heathrow

Wed 13/1

06:50-17:13

2 stops16h 23m

£555

Green BayLondon

GRB Green Bay Austin-Straubel - LHR London Heathrow

GRBLHR

Green Bay Austin-Straubel

Tue 8/12

17:18-10:05

2 stops34h 47m

London Heathrow

Fri 11/12

07:40-13:55

1 stop12h 15m

£561

MadisonLondon

MSN Madison Truax Field - LHR London Heathrow

MSNLHR

Madison Truax Field

Sun 6/12

14:50-09:10

2 stops12h 20m

London Heathrow

Tue 8/12

09:00-19:02

2 stops16h 02m

£593

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Tue 29/12

19:15-17:40

1 stop16h 25m

London Heathrow

Sat 9/1

15:35-16:45

2 stops31h 10m

£602

WausauLondon

CWA Wausau Central Wisconsin - LHR London Heathrow

CWALHR

Wausau Central Wisconsin

Mon 30/11

12:55-07:05

1 stop12h 10m

London Heathrow

Wed 9/12

06:30-21:10

2 stops20h 40m

£648

WausauLondon

CWA Wausau Central Wisconsin - LHR London Heathrow

CWALHR

Wausau Central Wisconsin

Tue 1/12

12:55-07:05

1 stop12h 10m

London Heathrow

Fri 11/12

06:30-21:10

2 stops20h 40m

£648

AppletonLondon

ATW Appleton Intl - LHR London Heathrow

ATWLHR

Appleton Intl

Mon 7/12

05:35-09:00

1 stop21h 25m

London Heathrow

Tue 15/12

06:30-17:58

2 stops17h 28m

£648

AppletonLondon

ATW Appleton Intl - LHR London Heathrow

ATWLHR

Appleton Intl

Sat 5/12

17:35-07:55

1 stop32h 20m

London Heathrow

Tue 15/12

07:30-19:16

2 stops17h 46m

£649

Flights are sorted by cheapest return flights first.

Deals found on 13/8

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

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

Currently, January is the cheapest month in which you can book a flight from Wisconsin to London Heathrow Airport (average of £530). Flying from Wisconsin to London Heathrow Airport in June is currently the most expensive (average of £1,067). 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?

Airfare is typical for this route at the moment.
Wisconsin to London Heathrow Airport flights typically cost between £488 and £901 in January.
The cheapest return price found within the last 5 days was £542 on Multiple Airlines (11 Jan–13 Jan).

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 £648, United Airlines can have you in London Heathrow Airport from Wisconsin in 12h 10m. Wisconsin and London Heathrow Airport are separated by a distance of 3876 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, January is the cheapest month in which you can book a flight from Wisconsin to London Heathrow Airport (average of £530). Flying from Wisconsin to London Heathrow Airport in June is currently the most expensive (average of £1,067). 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
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Ilford
Slough
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Southend-on-Sea
Swindon
Enfield
Kingston upon Thames
Southall
Poole

Browse thousands of different options on Cheapflights for your next trip

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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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Newark to Stansted flights
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Newark to Luton flights
Hobby to Heathrow flights
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Dulles Intl to London City flights
Boston to London City flights
Los Angeles to Gatwick flights
Philadelphia to Heathrow flights
Denver to Heathrow flights
Los Angeles to Stansted flights
Baltimore to Gatwick flights
Los Angeles to London City flights
Boston to Stansted flights
George Bush Intcntl to Heathrow flights
Reagan-National to Gatwick flights
O'Hare Intl to Gatwick flights
San Francisco to Gatwick flights
Charlotte to Heathrow flights
Raleigh to Heathrow flights
O'Hare Intl to Stansted flights
O'Hare Intl to London City flights
Sky Harbor Intl to Heathrow flights
San Francisco to London City flights
Minneapolis to Heathrow flights
San Francisco to Stansted flights
Dulles Intl to Luton flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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