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Heathrow

$328+ Cheap flights from Wisconsin to Heathrow (LHR)

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LHR
Jun 6 — Jun 131
Sat 6/6
Sat 6/13
1 adult, Economy
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Cheap flight deals from Wisconsin to Heathrow

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 May 7, 2026.

This KAYAK deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:25 pm
ORD
-
LHR
1 stop10h 30m
Icelandair
Sun 8/239:25 pm
LHR
-
ORD
1 stop26h 50m
Icelandair
Deal found 5/3$765
This KAYAK deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:25 pm
ORD
-
LHR
1 stop31h 30m
Icelandair
Mon 8/249:25 pm
LHR
-
ORD
1 stop26h 50m
Icelandair
Deal found 5/4$766
This oojo deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:25 pm
ORD
-
LHR
1 stop18h 55m
Icelandair
Mon 8/249:25 pm
LHR
-
ORD
1 stop26h 50m
Icelandair
Deal found 5/4$770
This Cheapflightsfares deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:15 pm
ORD
-
LHR
1 stop14h 45m
Scandinavian Airlines
Wed 10/287:05 am
LHR
-
ORD
2 stops15h 40m
Scandinavian Airlines
Deal found 5/2$773
This oojo deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/287:20 pm
ORD
-
LHR
2 stops17h 30m
Scandinavian Airlines
Mon 1/117:50 pm
LHR
-
ORD
2 stops26h 55m
Scandinavian Airlines
Deal found 5/3$774
This oojo deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:15 pm
ORD
-
LHR
2 stops15h 10m
Scandinavian Airlines
Sun 11/16:40 am
LHR
-
ORD
2 stops16h 05m
Scandinavian Airlines
Deal found 5/4$775
This FlightHub deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:25 pm
ORD
-
LHR
1 stop31h 30m
Icelandair
Sat 8/229:25 pm
LHR
-
ORD
1 stop26h 50m
Icelandair
Deal found 5/2$776
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:30 pm
ORD
-
LHR
1 stop10h 20m
Icelandair
Mon 11/1612:15 pm
LHR
-
ORD
1 stop11h 05m
Icelandair
Deal found 5/4$780
This Mytrip deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:20 pm
ORD
-
LHR
2 stops17h 30m
Scandinavian Airlines
Sun 11/86:40 am
LHR
-
ORD
2 stops16h 05m
Scandinavian Airlines
Deal found 5/3$785
This Iberia deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/132:51 pm
GRB
-
LHR
1 stop10h 49m
Iberia
Wed 9/236:15 am
LHR
-
GRB
2 stops22h 52m
Iberia
Deal found 5/4$863
This Scandinavian Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:00 am
MKE
-
LHR
2 stops29h 30m
Scandinavian Airlines
Mon 10/197:05 am
LHR
-
MKE
2 stops19h 03m
Scandinavian Airlines
Deal found 5/4$865
This British Airways deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:16 pm
MKE
-
LHR
1 stop9h 59m
British Airways
Wed 10/146:15 am
LHR
-
MKE
2 stops19h 25m
British Airways
Deal found 5/2$871

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 May 7, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$765
(KAYAK)

One-way from

$328
(oojo)

Popular in

June

Cheapest in

January

Average price

$1,040
Provider with most accurate pricing for Milwaukee-Mitchell-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-London (LON) flights.
Search Deals
From Wisconsin to London Heathrow
Search Deals
One-way flight from Wisconsin to London Heathrow
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($208 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated May 7, 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 round-trip

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Mon 9/7

5:30 am-6:25 am

1 stop18h 55m

London Heathrow

Fri 9/25

6:30 am-4:33 pm

2 stops16h 03m

$878

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Mon 10/5

1:00 pm-7:10 am

1 stop12h 10m

London Heathrow

Tue 10/13

8:40 am-9:09 pm

2 stops18h 29m

$878

MadisonLondon

MSN - LHR

MSNLHR

Madison Truax Field

Wed 8/19

12:10 pm-1:05 pm

1 stop18h 55m

London Heathrow

Tue 8/25

6:30 am-5:48 pm

2 stops17h 18m

$878

MadisonLondon

MSN - LHR

MSNLHR

Madison Truax Field

Mon 8/3

7:03 am-7:10 am

1 stop18h 07m

London Heathrow

Wed 9/2

6:30 am-5:04 pm

2 stops16h 34m

$878

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Mon 9/7

5:30 am-6:25 am

1 stop18h 55m

London Heathrow

Fri 9/25

6:30 am-3:32 pm

2 stops15h 02m

$879

MadisonLondon

MSN - LHR

MSNLHR

Madison Truax Field

Wed 8/26

6:16 pm-1:05 pm

1 stop12h 49m

London Heathrow

Wed 9/2

9:55 am-8:40 pm

2 stops16h 45m

$879

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Tue 8/4

9:40 am-6:45 am

2 stops15h 05m

London Heathrow

Thu 8/20

6:15 am-6:01 pm

2 stops17h 46m

$890

La CrosseLondon

LSE - LHR

LSELHR

La Crosse

Tue 10/20

6:19 pm-6:55 pm

2 stops18h 36m

London Heathrow

Wed 11/4

11:25 am-11:49 pm

2 stops18h 24m

$890

MadisonLondon

MSN - LHR

MSNLHR

Madison Truax Field

Wed 8/19

1:35 pm-10:40 am

2 stops15h 05m

London Heathrow

Wed 8/26

11:30 am-11:00 pm

2 stops17h 30m

$890

La CrosseLondon

LSE - LHR

LSELHR

La Crosse

Tue 10/13

11:18 am-6:50 am

1 stop13h 32m

London Heathrow

Tue 10/20

11:10 am-11:19 pm

1 stop18h 09m

$907

Flights are sorted by cheapest round-trip 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 round-trip 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 $471). Flying from Wisconsin to London Heathrow Airport in June is currently the most expensive (average of $1,077). 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 to fly round-trip 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 $890, Delta can have you in London Heathrow Airport from Wisconsin in 15h 05m. The distance from Wisconsin to London Heathrow Airport is about 3894 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The most popular route from Wisconsin to London Heathrow Airport is Chicago O'Hare Intl - London Heathrow. You may also consider Minneapolis St Paul - London Heathrow or Milwaukee-Mitchell - London Heathrow.

  • 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 vacation 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 $471). Flying from Wisconsin to London Heathrow Airport in June is currently the most expensive (average of $1,077). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Wisconsin to Heathrow

Discover the top 5 airlines that operate flights from Wisconsin to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$596Average$976FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$624Average$817FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$629Average$889FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$659Average$1,051FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$670Average$1,071FlexibilityNo cancel feeOn-time69%

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