What is the cheapest airline that flies from Wisconsin to London Heathrow?

Virgin Atlantic, Delta, and KLM are the most popular carriers operating from Wisconsin to London Heathrow

What airlines fly to London Heathrow Airport?

American Airlines, United Airlines and British Airways are the top three most popular airlines that fly to London Heathrow Airport from Wisconsin according to our data. American Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 5 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to London Heathrow Airport?

On average, it takes 10h 38m to fly from Wisconsin to London Heathrow Airport if you fly out of Green Bay (the most popular airport in Wisconsin) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Madison and into London Heathrow Airport, then the flight time is around 10h 50m.

How many flights depart from Wisconsin to London Heathrow Airport on average per week?

237 flights are operational weekly from Wisconsin to London Heathrow Airport as of March 2026. The most popular departure day for this route is Mon, with 21% of flights per week taking off on this day.

How many operators does momondo search for flights from Wisconsin to London Heathrow Airport?

As of March 2026, there are 19 operators available to choose from for flights from Wisconsin to London Heathrow Airport.

How old do you have to be to fly from Wisconsin to London Heathrow Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Wisconsin to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$267 Cheap Flights from Wisconsin to London Heathrow Airport in 2026

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Wisconsin to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:05 pm - 10:20 am

ORD

LHR

34h 15m

1 stop

6:00 am - 4:05 pm

LHR

ORD

16h 05m

1 stop

$621TAP AIR PORTUGAL

Sat, Apr 25 - Sat, May 9

6:00 pm - 5:45 pm

ORD

LHR

17h 45m

1 stop

8:00 am - 4:00 pm

LHR

ORD

14h 00m

1 stop

$632TAP AIR PORTUGAL

Wed, Apr 15 - Wed, Apr 22

6:30 pm - 6:40 pm

MSP

LHR

18h 10m

1 stop

6:20 am - 5:00 pm

LHR

MSP

16h 40m

1 stop

$735Multiple Airlines

Sun, Sep 6 - Sun, Sep 20

3:05 pm - 9:20 pm

MSP

LHR

24h 15m

2 stops

9:05 pm - 12:25 pm

LHR

MSP

21h 20m

2 stops

$775Multiple Airlines

Sun, Apr 19 - Tue, Apr 28

7:00 pm - 7:40 pm

MKE

LHR

18h 40m

2 stops

9:00 am - 8:55 pm

LHR

MKE

17h 55m

2 stops

$785Lufthansa

Wed, Aug 19 - Wed, Aug 26

6:50 am - 9:20 am

MSP

LHR

20h 30m

2 stops

7:50 pm - 7:48 pm

LHR

MSP

29h 58m

2 stops

$790Scandinavian Airlines

Tue, Apr 21 - Tue, Apr 28

10:00 am - 9:20 am

MSP

LHR

17h 20m

2 stops

9:05 pm - 8:09 pm

LHR

MSP

29h 04m

2 stops

$793Scandinavian Airlines

Tue, Sep 8 - Fri, Sep 18

12:13 pm - 10:40 am

MKE

LHR

16h 27m

2 stops

10:50 am - 10:30 pm

LHR

MKE

17h 40m

2 stops

$795Lufthansa

Tue, Apr 21 - Tue, Apr 28

6:37 pm - 10:30 am

GRB

LHR

9h 53m

1 stop

6:15 am - 11:07 pm

LHR

GRB

22h 52m

2 stops

$819Iberia

Mon, Sep 7 - Wed, Sep 16

1:53 pm - 10:30 am

MKE

LHR

14h 37m

1 stop

6:15 am - 5:07 pm

LHR

MKE

16h 52m

2 stops

$819Iberia

Wed, May 6 - Wed, May 13

TAP AIR PORTUGAL flights from Wisconsin to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Wisconsin to London Heathrow Airport flight tickets

TAP AIR PORTUGAL

Apr 25

ORD6:05 pmChicago O'Hare Intl

34h 15m

1 stop

LHR10:20 amLondon Heathrow

May 9

LHR6:00 amLondon Heathrow

16h 05m

1 stop

ORD4:05 pmChicago O'Hare Intl

$621

TAP AIR PORTUGAL

Apr 15

ORD6:00 pmChicago O'Hare Intl

17h 45m

1 stop

LHR5:45 pmLondon Heathrow

Apr 22

LHR8:00 amLondon Heathrow

14h 00m

1 stop

ORD4:00 pmChicago O'Hare Intl

$632

TAP AIR PORTUGAL

May 3

ORD6:00 pmChicago O'Hare Intl

34h 20m

1 stop

LHR10:20 amLondon Heathrow

May 15

LHR6:45 pmLondon Heathrow

27h 20m

1 stop

ORD4:05 pmChicago O'Hare Intl

$633

Icelandair flights from Wisconsin to London Heathrow Airport

Our best Icelandair deals on Wisconsin to London Heathrow Airport flight tickets

Icelandair

May 1

ORD10:25 pmChicago O'Hare Intl

15h 55m

1 stop

LHR8:20 pmLondon Heathrow

May 5

LHR1:05 pmLondon Heathrow

11h 10m

1 stop

ORD6:15 pmChicago O'Hare Intl

$660

Icelandair

May 3

ORD7:25 pmChicago O'Hare Intl

10h 30m

1 stop

LHR11:55 amLondon Heathrow

May 9

LHR9:25 pmLondon Heathrow

26h 50m

1 stop

ORD6:15 pmChicago O'Hare Intl

$665

Icelandair

May 8

ORD10:25 pmChicago O'Hare Intl

15h 55m

1 stop

LHR8:20 pmLondon Heathrow

May 15

LHR9:25 pmLondon Heathrow

26h 50m

1 stop

ORD6:15 pmChicago O'Hare Intl

$667

momondo Fare Finder

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

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sat 4/25

6:05 pm-10:20 am

1 stop34h 15m

London Heathrow

Sat 5/9

6:00 am-4:05 pm

1 stop16h 05m

$621

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 4/15

6:00 pm-5:45 pm

1 stop17h 45m

London Heathrow

Wed 4/22

8:00 am-4:00 pm

1 stop14h 00m

$632

MinneapolisLondon

MSP - LHR

MSPLHR

Minneapolis St Paul

Sun 9/6

6:30 pm-6:40 pm

1 stop18h 10m

London Heathrow

Sun 9/20

6:20 am-5:00 pm

1 stop16h 40m

$735

MinneapolisLondon

MSP - LHR

MSPLHR

Minneapolis St Paul

Sun 4/19

3:05 pm-9:20 pm

2 stops24h 15m

London Heathrow

Tue 4/28

9:05 pm-12:25 pm

2 stops21h 20m

$775

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Wed 8/19

7:00 pm-7:40 pm

2 stops18h 40m

London Heathrow

Wed 8/26

9:00 am-8:55 pm

2 stops17h 55m

$785

MinneapolisLondon

MSP - LHR

MSPLHR

Minneapolis St Paul

Tue 4/21

6:50 am-9:20 am

2 stops20h 30m

London Heathrow

Tue 4/28

7:50 pm-7:48 pm

2 stops29h 58m

$790

MinneapolisLondon

MSP - LHR

MSPLHR

Minneapolis St Paul

Tue 9/8

10:00 am-9:20 am

2 stops17h 20m

London Heathrow

Fri 9/18

9:05 pm-8:09 pm

2 stops29h 04m

$793

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Tue 4/21

12:13 pm-10:40 am

2 stops16h 27m

London Heathrow

Tue 4/28

10:50 am-10:30 pm

2 stops17h 40m

$795

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Mon 9/7

6:37 pm-10:30 am

1 stop9h 53m

London Heathrow

Wed 9/16

6:15 am-11:07 pm

2 stops22h 52m

$819

Quickest round-trip

MilwaukeeLondon

MKE - LHR

MKELHR

Milwaukee-Mitchell

Wed 5/6

1:53 pm-10:30 am

1 stop14h 37m

London Heathrow

Wed 5/13

6:15 am-5:07 pm

2 stops16h 52m

$819

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Wisconsin to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to London Heathrow Airport?

The month of January is, on average, the cheapest month to fly to London Heathrow Airport from Wisconsin, with most prices found around $659. If you’re not able to fly to London Heathrow Airport in January, then April is your next best option. Flight prices from Wisconsin to London Heathrow Airport during April average around $698.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Wisconsin when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $856 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Wisconsin for as low as $663 on momondo.

Can stopping save me money on Wisconsin to London Heathrow Airport flights?

You could potentially save up to 11% on your flight if you consider stops on a Wisconsin to London Heathrow Airport flight.

Cheap Wisconsin to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Wisconsin to London Heathrow Airport

Fastest flight time	7h 40m
Direct flights	Every day

The fastest flight from Wisconsin to London Heathrow Airport takes 7h 40m

Direct flights go from Wisconsin to London Heathrow Airport every day.

Search flight deals

When did momondo last update prices for flights from Wisconsin to London Heathrow Airport?
Prices for flights from Wisconsin to London Heathrow Airport refresh daily.
How many operators does momondo search for flights from Wisconsin to London Heathrow Airport?
As of March 2026, there are 19 operators available to choose from for flights from Wisconsin to London Heathrow Airport.
How old do you have to be to fly from Wisconsin to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Wisconsin to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Wisconsin to London Heathrow Airport

Compare and see reviews for airlines that fly from Wisconsin to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $596	Free Cancellation	Rating 7.9 8,324 reviews	Search Delta flights
British Airways	PriceFrom $603	Free Cancellation	Rating 6.7 7,817 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom $629	Free Cancellation	Rating 7.5 685 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom $663	Free Cancellation	Rating 7.1 11,491 reviews	Search American Airlines flights
United Airlines	PriceFrom $670	Free Cancellation	Rating 7.4 9,471 reviews	Search United Airlines flights

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Crawley

Slough

Stratford-upon-Avon

Wembley

Hayes

Croydon

Dartford

Brentwood

Guildford

Harrow

Cobham

Folkestone

Romford

Stansted

Watford

Why use momondo?

Why should I use momondo to find a flight deal from Wisconsin to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Wisconsin to London. momondo saves you time and could save you money on your trip.

Can I find flights from Wisconsin to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Wisconsin with this policy.

How can momondo help me find flights from Wisconsin to London?

momondo helps you find the best flight between Wisconsin and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Wisconsin to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Wisconsin. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Thu 4/23

Thu 4/30

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities

Other flights from Wisconsin

Other flights to London

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $424

Flights to London City Airportfrom $616

Flights to London Stansted Airportfrom $434

Flights to London Luton Airportfrom $515

Flights to Glasgow Intl Airportfrom $535

Flights to Belfast Intl Airportfrom $663

Flights to London Southend Airportfrom $723

Flights to Belfast City Airportfrom $638

Cheap flights from Wisconsin to London from $267

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Wisconsin to London departing on 4/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Wisconsin to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

TAP AIR PORTUGAL flights from Wisconsin to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Wisconsin to London Heathrow Airport flight tickets

Icelandair flights from Wisconsin to London Heathrow Airport

Our best Icelandair deals on Wisconsin to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Wisconsin to London Heathrow Airport that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from Wisconsin to London Heathrow Airport

What is the cheapest month to fly to London Heathrow Airport?

How far in advance should I book a flight to London Heathrow Airport?

Can stopping save me money on Wisconsin to London Heathrow Airport flights?

What is the cheapest airline that flies from Wisconsin to London Heathrow?

What airlines fly to London Heathrow Airport?

How many flights depart from Wisconsin to London Heathrow Airport on average per week?

How long does it take to fly to London Heathrow Airport?

Cheap Wisconsin to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Wisconsin to London Heathrow Airport

Fastest flight time

Direct flights

Best airlines flying from Wisconsin to London Heathrow Airport

Compare and see reviews for airlines that fly from Wisconsin to London Heathrow Airport with momondo

Traveling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Wisconsin flight routes

According to popular flight searches on momondo this year

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Complete your trip to London

Explore popular destinations other users love

According to popular flight searches on momondo this year