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Heathrow

$421+ Cheap flights from Green Bay (GRB) 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — LHR
Jun 9 — Jun 161
Tue 6/9
Tue 6/16
1 adult, Economy
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Cheap 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 May 10, 2026.

This Iberia deal was found by Cheapflights users on 5/5. 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 9/136:29 pm
GRB
-
LHR
1 stop10h 21m
Iberia
Wed 9/236:15 am
LHR
-
GRB
2 stops22h 52m
Iberia
Deal found 5/5$864
This Delta deal was found by Cheapflights users on 5/8. 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.
Sun 9/137:00 am
GRB
-
LHR
1 stop18h 10m
Delta
Wed 9/238:40 am
LHR
-
GRB
2 stops19h 18m
Delta
Deal found 5/8$878
This Delta deal was found by Cheapflights users on 5/8. 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 9/157:00 am
GRB
-
LHR
1 stop18h 10m
Delta
Fri 10/28:40 am
LHR
-
GRB
2 stops19h 18m
Delta
Deal found 5/8$879
This oojo deal was found by Cheapflights users on 5/5. 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 9/139:55 am
GRB
-
LHR
1 stop15h 45m
British Airways
Wed 9/2312:15 pm
LHR
-
GRB
1 stop16h 52m
British Airways
Deal found 5/5$892
This British Airways deal was found by Cheapflights users on 5/7. 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 9/159:55 am
GRB
-
LHR
1 stop15h 45m
British Airways
Fri 10/22:45 pm
LHR
-
GRB
1 stop14h 22m
British Airways
Deal found 5/7$897
This Delta deal was found by Cheapflights users on 5/8. 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.
Sun 8/911:07 am
GRB
-
LHR
1 stop14h 03m
Delta
Thu 8/2012:25 pm
LHR
-
GRB
1 stop14h 41m
Delta
Deal found 5/8$908
This Delta deal was found by Cheapflights users on 5/6. 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 8/45:24 am
GRB
-
LHR
1 stop19h 51m
Delta
Tue 8/186:30 am
LHR
-
GRB
2 stops21h 36m
Delta
Deal found 5/6$911
This Delta deal was found by Cheapflights users on 5/8. 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 8/105:24 am
GRB
-
LHR
1 stop19h 01m
Delta
Tue 8/188:40 am
LHR
-
GRB
2 stops19h 26m
Delta
Deal found 5/8$912

Find 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 May 10, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$864
(Iberia)

One-way from

$421
(Cheapflightsfares)

Popular in

November

Cheapest in

October

Average price

$749
Provider with most accurate pricing for Green Bay Austin-Straubel-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-London Heathrow flights.
Search Deals
From Green Bay Austin-Straubel to London Heathrow
Search Deals
One-way flight from Green Bay Austin-Straubel to London Heathrow
Search Deals
Highest demand for flights based on searches. 44% potential increase in price ($1,065 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 32% potential price decrease ($326 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 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 May 10, 2026.
Use the filters below to find and compare flights from Green Bay 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

Tue 9/15

10:50 am-7:10 am

1 stop14h 20m

London Heathrow

Fri 10/2

6:30 am-9:58 pm

2 stops21h 28m

$878

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Sun 8/16

12:03 pm-1:05 pm

1 stop19h 02m

London Heathrow

Wed 8/26

9:55 am-10:06 pm

2 stops18h 11m

$878

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Tue 9/15

9:55 am-9:05 am

1 stop17h 10m

London Heathrow

Fri 10/2

9:45 am-5:40 pm

1 stop13h 55m

$897

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Tue 7/28

5:10 am-7:15 am

1 stop20h 05m

London Heathrow

Fri 8/28

8:40 am-10:06 pm

2 stops19h 26m

$938
Quickest round-trip

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Sat 8/8

11:07 am-7:10 am

1 stop14h 03m

London Heathrow

Fri 8/14

1:25 pm-10:06 pm

1 stop14h 41m

$991

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Tue 8/11

4:13 pm-1:05 pm

1 stop14h 52m

London Heathrow

Mon 8/17

9:20 am-10:06 pm

1 stop18h 46m

$1,001

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Tue 9/15

2:30 pm-10:40 am

2 stops14h 10m

London Heathrow

Fri 10/2

6:50 am-12:19 am

2 stops23h 29m

$1,015

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Thu 8/6

5:24 am-1:15 pm

1 stop25h 51m

London Heathrow

Sat 8/15

9:20 am-10:06 pm

1 stop18h 46m

$1,057
Cheapest one-way
Quickest one-way

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Sun 8/9

3:21 pm-8:05 am

1 stop10h 44m

$477

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

Sorted by cheapest first

Compare providers for flights from Green Bay to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Green Bay to Heathrow in May.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Green Bay-London Heathrow Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Green Bay-London Heathrow Airport flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Green Bay-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Green Bay-London Heathrow Airport flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Green Bay-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

How much does it cost to fly round-trip from Green Bay 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 May 10, 2026.
See what other customers who have flown with United Airlines,American Airlines, andBritish 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
9,693 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,693 reviews
United Airlines
7.4
Good
9,693 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
American Airlines
7.1
Good
11,672 reviews
United Airlines
7.4
Good
9,693 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
British Airways
6.7
Okay
7,954 reviews
United Airlines
7.4
Good
9,693 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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.

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

    A quick flight from Green Bay to London Heathrow Airport can take about 14h 20m. Delta provides one of the quickest options available for as low as $878. Airlines will cover a distance of 3833 mi.

  • 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 $697, and United Airlines, from $722. You may be able to fly from Green Bay to London Heathrow Airport for 50% 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.

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
Dorking
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

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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 May 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$650Average$815FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$697Average$1,199FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$722Average$897FlexibilityNo cancel feeOn-time69%

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