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$332+ Cheap flights from Milwaukee (MKE) 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LHR
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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Cheapflights Tip: The best prices from Milwaukee-Mitchell to London Heathrow are usually found in November or October, booked 72 days in advance, depart on a Sunday or Tuesday and return on a Monday

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 September 19, 2025.

Round-trip from

$624
(Delta)

One-way from

$332
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$851
From Milwaukee-Mitchell to London Heathrow
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One-way flight from Milwaukee-Mitchell to London Heathrow
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Highest demand for flights based on searches. 16% potential increase in price ($176 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 19, 2025.

This Delta deal was found by Cheapflights users on 9/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/39:39 amMKE - LHR
1 stop17h 06mDelta
Wed 11/126:20 amLHR - MKE
2 stops17h 44mDelta
Deal found 9/18$624
This Scandinavian Airlines deal was found by Cheapflights users on 9/17. 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.
Thu 11/137:00 amMKE - LHR
2 stops27h 00mScandinavian Airlines
Tue 11/186:40 amLHR - MKE
3 stops19h 27mScandinavian Airlines
Deal found 9/17$642
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2410:35 amMKE - LHR
1 stop20h 55mDelta
Fri 10/3111:30 amLHR - MKE
2 stops17h 25mDelta
Deal found 9/17$674
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1710:35 amMKE - LHR
1 stop20h 55mDelta
Wed 10/228:40 amLHR - MKE
2 stops15h 38mDelta
Deal found 9/17$675
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:04 pmMKE - LHR
2 stops13h 16mDelta
Sun 11/98:40 amLHR - MKE
2 stops17h 27mDelta
Deal found 9/17$679
This KLM deal was found by Cheapflights users on 9/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:04 pmMKE - LHR
1 stop12h 56mKLM
Sun 11/98:55 amLHR - MKE
1 stop13h 22mKLM
Deal found 9/17$682
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/64:49 pmMKE - LHR
2 stops14h 41mDelta
Sun 10/1211:20 amLHR - MKE
1 stop18h 35mDelta
Deal found 9/17$686
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/410:21 amMKE - LHR
1 stop15h 29mDelta
Tue 11/186:20 amLHR - MKE
2 stops15h 54mDelta
Deal found 9/17$690

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated September 19, 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

Mon 11/3

9:39 am-8:45 am

1 stop17h 06m

London Heathrow

Wed 11/12

6:20 am-6:04 pm

2 stops17h 44m

$624

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Mon 11/3

2:55 pm-7:05 am

1 stop10h 10m

London Heathrow

Wed 11/12

12:30 pm-8:18 pm

1 stop13h 48m

$632

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Fri 10/17

10:35 am-1:30 pm

1 stop20h 55m

London Heathrow

Wed 10/22

8:40 am-6:18 pm

2 stops15h 38m

$675

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Fri 10/24

6:35 pm-1:30 pm

2 stops12h 55m

London Heathrow

Fri 10/31

6:20 am-8:07 pm

2 stops18h 47m

$678

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Thu 11/13

9:36 am-7:50 am

2 stops16h 14m

London Heathrow

Tue 11/18

6:20 am-4:14 pm

2 stops15h 54m

$678

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Mon 10/6

6:44 pm-1:30 pm

1 stop12h 46m

London Heathrow

Sun 10/12

11:20 am-11:55 pm

1 stop18h 35m

$682

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Tue 11/4

10:21 am-7:50 am

1 stop15h 29m

London Heathrow

Tue 11/18

6:20 am-4:14 pm

2 stops15h 54m

$690

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Mon 10/6

7:38 pm-12:05 pm

2 stops34h 27m

$332

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Sun 10/26

8:16 pm-11:35 am

1 stop10h 19m

$421

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Wed 11/26

10:08 am-6:35 am

1 stop14h 27m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/18

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 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 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 round-trip flight from Milwaukee to Heathrow. Price data was last updated on September 12, 2025.

The best time to book flights from Milwaukee to London Heathrow Airport is 72 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from Milwaukee to London Heathrow Airport (average of $661). Flying from Milwaukee to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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.

What is the cheapest time of day to fly from MKE to LHR?

Find hourly flight availability from Milwaukee to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 19, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 16% on flights from Milwaukee to London Heathrow Airport by exploring options for tickets in the evening.

How much does it cost to fly round-trip from Milwaukee to London Heathrow Airport?

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 September 19, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and Virgin Atlantic from Milwaukee to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
664 reviews
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,373 reviews
Delta
8.0
Very good
7,964 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    Milwaukee-Mitchell (MKE), located 6.4 mi from the city center, is the airport you fly out of when you book flights from Milwaukee to London Heathrow. 5 airlines have flights from Milwaukee-Mitchell to London Heathrow on a regular basis. Booking flights from Milwaukee-Mitchell to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

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

    Airlines like Delta and KLM fly from Milwaukee to London Heathrow Airport in about 10h 10m. The time it takes to get you to your destination can typically vary by up to 6h 56m. There are 3894 mi between Milwaukee and London Heathrow Airport. Both multi-stop and nonstop flights can be found to your destination and back.

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

    British Airways, at $693, was found to be the cheapest airline from Milwaukee to London Heathrow Airport.Alternate airlines to your destination round-trip include American Airlines and Virgin Atlantic. These flights start at 24% lower than the current average price 3 months from now.

  • 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 vacation 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, November is the cheapest month in which you can book a flight from Milwaukee to London Heathrow Airport (average of $661). Flying from Milwaukee to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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
Hounslow
Hayes
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Wembley
Folkestone
Chichester

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Milwaukee to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Milwaukee to Heathrow

Discover the top 5 airlines that operate flights from Milwaukee 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 September 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$693Average$805FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$699Average$898FlexibilityNo cancel feeOn-time71%
Virgin AtlanticCheapest$703Average$922FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$714Average$994FlexibilityNo cancel feeOn-time69%
DeltaCheapest$749Average$834FlexibilityNo cancel feeOn-timeN/A

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