HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$745+ Cheap flights from Green Bay (GRB) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — LHR
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Green Bay to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Green Bay to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Green Bay (GRB) 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 August 18, 2025.

Round-trip from

$745
(Ovago)

Popular in

December

Cheapest in

October

Average price

$815
From Green Bay Austin-Straubel to London Heathrow
Search Deals
Highest demand for flights based on searches. 31% potential increase in price ($457 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Green Bay to Heathrow

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

This Ovago deal was found by Cheapflights users on 8/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:35 pmGRB - LHR
1 stop12h 30mBritish Airways
Fri 10/311:05 amLHR - GRB
1 stop12h 51mBritish Airways
Deal found 8/17$745
This American Airlines deal was found by Cheapflights users on 8/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2411:11 amGRB - LHR
1 stop15h 59mAmerican Airlines
Fri 10/312:15 pmLHR - GRB
1 stop11h 41mAmerican Airlines
Deal found 8/18$751
This American Airlines deal was found by Cheapflights users on 8/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:35 pmGRB - LHR
1 stop12h 30mAmerican Airlines
Tue 9/309:15 amLHR - GRB
2 stops14h 41mAmerican Airlines
Deal found 8/18$756
This Delta deal was found by Cheapflights users on 8/16. 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.
Wed 9/2411:07 amGRB - LHR
2 stops16h 53mDelta
Fri 10/36:15 amLHR - GRB
2 stops15h 56mDelta
Deal found 8/16$758
This Ovago deal was found by Cheapflights users on 8/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:35 pmGRB - LHR
1 stop10h 35mBritish Airways
Tue 9/3011:05 amLHR - GRB
1 stop12h 51mBritish Airways
Deal found 8/17$770
This Netflights deal was found by Cheapflights users on 8/17. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/285:30 amGRB - LHR
1 stop21h 30mVirgin Atlantic
Thu 12/49:40 amLHR - GRB
2 stops16h 58mVirgin Atlantic
Deal found 8/17$776
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/163:02 pmGRB - LHR
1 stop14h 03mAmerican Airlines
Fri 10/243:30 pmLHR - GRB
1 stop14h 00mAmerican Airlines
Deal found 8/17$801
This Delta deal was found by Cheapflights users on 8/16. 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 11/286:45 amGRB - LHR
2 stops17h 35mDelta
Thu 12/46:20 amLHR - GRB
2 stops16h 12mDelta
Deal found 8/16$807

Cheapflights Fare Finder

 
Customize your flight search to find flights from Green Bay 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 August 18, 2025.
Use the filters below to find and compare flights from Green Bay to London Heathrow Airport that are best for you.

Fly from

Green Bay

Fly to

Heathrow

Route

Depart

Return

Price

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Wed 9/24

4:35 pm-11:05 am

1 stop12h 30m

London Heathrow

Fri 10/3

11:05 am-5:56 pm

1 stop12h 51m

$745

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Wed 9/24

11:11 am-9:10 am

1 stop15h 59m

London Heathrow

Fri 10/3

12:15 pm-5:56 pm

1 stop11h 41m

$751

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Wed 9/24

4:35 pm-11:05 am

1 stop12h 30m

London Heathrow

Tue 9/30

9:15 am-5:56 pm

2 stops14h 41m

$756

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Wed 9/24

11:07 am-10:00 am

2 stops16h 53m

London Heathrow

Fri 10/3

6:15 am-4:11 pm

2 stops15h 56m

$758

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Wed 9/24

11:07 am-9:15 am

2 stops16h 08m

London Heathrow

Tue 9/30

10:55 am-8:34 pm

2 stops15h 39m

$766

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Best time to book a flight from Green Bay to Heathrow

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

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

Currently, November is the cheapest month in which you can book a flight from Green Bay to London Heathrow Airport (average of $661). Flying from Green Bay 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.

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 August 18, 2025.
See what other customers who have flown with United Airlines, American Airlines, and British Airways from Green Bay to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,925 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,925 reviews
United Airlines
7.4
Good
8,925 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,925 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,277 reviews
United Airlines
7.4
Good
8,925 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Green Bay 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 Green Bay to London Heathrow?

    Most people fly from Green Bay Austin-Straubel (GRB) if they book a flight from Green Bay to London Heathrow. On average, Austin-Straubel has 0 outbound flights to London Heathrow per day from 3 airlines. Green Bay Austin-Straubel is conveniently located just 5.9 mi from Green Bay’s city center.

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

    Cheapflights users have booked flights from Green Bay to London Heathrow Airport round-trip from $650. Other airlines that can offer you cheap pricing are American Airlines, from $699, and United Airlines, from $701. You may be able to fly from Green Bay to London Heathrow Airport for 33% less than the average price by searching for these airlines.

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

    Yes. In addition to deals on Green Bay to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Green Bay to Heathrow?

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Green Bay to London Heathrow Airport (average of $661). Flying from Green Bay 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
Thornton Heath
Harrow
Canterbury
Dartford
Dover
Stratford-upon-Avon
Orpington
Watford
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Chelmsford
Southend-on-Sea
Folkestone
Chichester
Swindon

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Green Bay to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Heathrow flights
O'Hare Intl to Gatwick flights
O'Hare Intl to London City flights
Minneapolis to Heathrow flights
O'Hare Intl to Stansted flights
O'Hare Intl to Luton flights
Minneapolis to Gatwick flights
Minneapolis to London City flights
Milwaukee to Heathrow flights
Minneapolis to Stansted flights
Minneapolis to Luton flights
Appleton to Heathrow flights
Milwaukee to Gatwick flights
Madison to Heathrow flights
Milwaukee to London City flights
Madison to London City flights
Wausau to Heathrow flights
Green Bay to London City flights
Green Bay to Gatwick flights
Madison to Gatwick flights
La Crosse to Heathrow flights
Milwaukee to Stansted flights
Milwaukee to Luton flights
Minneapolis to Southend flights
Escanaba to Heathrow flights
Dubuque to Heathrow flights

Top 3 airlines flying from Green Bay to Heathrow

Discover the top 3 airlines that operate flights from Green Bay 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$650Average$835FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$699Average$1,412FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$701Average$857FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.