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Cheap flights from Milwaukee to London Heathrow Airport from £338

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LHR
23 Apr — 30 Apr1
1 adult

Cheap flight deals from Milwaukee to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Milwaukee (MKE) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 April 2025.

Round-trip from

£576

One-way from

£338

Popular in

June

Cheapest in

October

Average price

£605
United Airlines
  • United Airlines
  • 9/9-19/9
  • 3 total stops
  • 46h 18m total
  • Milwaukee to London
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Aer Lingus
  • Aer Lingus
  • 10/8
  • 2 total stops
  • 18h 15m total
  • Milwaukee to London
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Highest demand for flights based on searches. 11% potential increase in price (£70 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Find flight deals from Milwaukee to Heathrow

Cheapest flights from Milwaukee to Heathrow
Explore the most affordable flight options available from Milwaukee to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.

Tue 9/912:05MKE - LHR
1 stop12h 15mUnited Airlines
Fri 19/914:05LHR - MKE
2 stops34h 03mUnited Airlines
Deal found 17/4£576
Tue 9/910:50MKE - LHR
2 stops13h 40mMultiple Airlines
Fri 19/913:30LHR - MKE
2 stops15h 11mMultiple Airlines
Deal found 17/4£578
Wed 20/814:50MKE - LHR
2 stops16h 35mBritish Airways
Mon 25/819:25LHR - MKE
2 stops27h 48mBritish Airways
Deal found 17/4£592
Tue 9/912:20MKE - LHR
1 stop12h 25mKLM
Fri 19/909:20LHR - MKE
1 stop14h 27mKLM
Deal found 17/4£594
Tue 12/808:35MKE - LHR
2 stops15h 55mAir Canada
Sun 31/814:05LHR - MKE
2 stops31h 04mAir Canada
Deal found 17/4£614
Tue 16/911:15MKE - LHR
1 stop17h 15mDelta
Tue 30/909:55LHR - MKE
2 stops15h 47mDelta
Deal found 17/4£618
Mon 15/913:05MKE - LHR
1 stop13h 50mAir France
Mon 29/909:20LHR - MKE
1 stop14h 27mAir France
Deal found 17/4£666
Thu 15/518:23MKE - LHR
1 stop11h 52mAmerican Airlines
Thu 22/515:30LHR - MKE
1 stop11h 57mAmerican Airlines
Deal found 17/4£674
Sat 23/817:40MKE - LHR
2 stops20h 00mLufthansa
Fri 29/819:30LHR - MKE
2 stops27h 26mLufthansa
Deal found 17/4£720
Mon 28/407:00MKE - LHR
2 stops29h 50mScandinavian Airlines
Fri 9/521:05LHR - MKE
3 stops28h 41mScandinavian Airlines
Deal found 17/4£789
Mon 28/418:37MKE - LHR
2 stops12h 48mAer Lingus
Fri 2/507:40LHR - MKE
2 stops16h 26mAer Lingus
Deal found 17/4£928

Cheapflights Fare Finder

Customise your flight search to find flights from Milwaukee 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 18 April 2025.
Use the filters below to find and compare flights from Milwaukee to London Heathrow Airport that are best for you.

Fly from

Milwaukee

Fly to

Heathrow

Route

Depart

Return

Price

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Tue 9/9

12:05-06:20

1 stop12h 15m

London Heathrow

Fri 19/9

14:05-18:08

2 stops34h 03m

£576

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Tue 9/9

10:50-06:30

2 stops13h 40m

London Heathrow

Fri 19/9

13:30-22:41

2 stops15h 11m

£578

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Wed 20/8

14:50-13:25

2 stops16h 35m

London Heathrow

Mon 25/8

19:25-17:13

2 stops27h 48m

£592

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Tue 9/9

14:45-11:10

1 stop14h 25m

London Heathrow

Fri 19/9

12:25-19:42

1 stop13h 17m

£594

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Tue 12/8

08:35-06:30

2 stops15h 55m

London Heathrow

Sun 31/8

14:05-15:09

2 stops31h 04m

£614

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Mon 15/9

13:05-08:55

1 stop13h 50m

London Heathrow

Mon 29/9

09:20-17:47

1 stop14h 27m

£666

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Thu 11/9

12:20-06:45

1 stop12h 25m

London Heathrow

Sat 20/9

10:55-19:42

1 stop14h 47m

£669

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Thu 15/5

18:23-12:15

1 stop11h 52m

London Heathrow

Thu 22/5

15:30-21:27

1 stop11h 57m

£674

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Sat 23/8

17:40-19:40

2 stops20h 00m

London Heathrow

Fri 29/8

19:30-16:56

2 stops27h 26m

£720

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Mon 28/4

07:00-18:50

2 stops29h 50m

London Heathrow

Fri 9/5

21:05-19:46

3 stops28h 41m

£789

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 16 results
1
2

Best time to book a flight from Milwaukee to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Milwaukee 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 Milwaukee to London Heathrow Airport

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

Use this chart to determine the optimal time to book a return flight from Milwaukee to Heathrow. Price data was last updated on 11 April 2025.

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Milwaukee 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 Milwaukee to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Milwaukee to London Heathrow Airport (average of £112). Flying from Milwaukee to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 18 April 2025.
Read through reviews of airlines operating flights from Milwaukee to London, such as Delta, KLM and Air France. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,917 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,329 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Scandinavian Airlines
7.3
Good
1,336 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

  • What airport do you fly from for flights from Milwaukee to London Heathrow?

    Located just 6.4 mi from the city center, Milwaukee-Mitchell is the airport most travelers will use when flying to London Heathrow from Milwaukee. Booking flights from Milwaukee-Mitchell (MKE) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 0 different airlines.

  • What are the cheapest airlines flying from Milwaukee to London Heathrow Airport round-trip?

    Flying on United Airlines is currently your cheapest option to London Heathrow Airport, with prices starting at £576. Additional return tickets that might be worth considering are offered by British Airways and Delta, with the lowest prices starting at £592 and £594, respectively. United Airlines is currently priced 16% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Milwaukee to London Heathrow Airport one-way?

    The cheapet airlines for a one-way flight from Milwaukee to London Heathrow Airport are Aer Lingus (£338), KLM (£352), and Air Canada (£357).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Milwaukee 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 Milwaukee to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Milwaukee to London Heathrow Airport (average of £112). Flying from Milwaukee to London Heathrow Airport in August is currently the most expensive (average of £164). 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 Milwaukee?

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