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$543+ Cheap flights from Green Bay (GRB) to London (LON)

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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — LON
mag 11 — mag 181
lun 5/11
lun 5/18
1 adult, Economy
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Cheap flight deals from Green Bay to London

Cheapest flights from Green Bay to London
Explore the most affordable flight options available from Green Bay to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on aprile 11, 2026.

This United Airlines deal was found by Cheapflights users on 4/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 4/208:00 am
GRB
-
LHR
1 stop18h 30m
United Airlines
mer 4/297:25 am
LHR
-
GRB
2 stops15h 33m
United Airlines
Deal found 4/9$873
This United Airlines deal was found by Cheapflights users on 4/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 4/203:47 pm
GRB
-
LHR
2 stops12h 13m
United Airlines
gio 4/307:25 am
LHR
-
GRB
2 stops15h 25m
United Airlines
Deal found 4/9$876
This United Airlines deal was found by Cheapflights users on 4/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 4/228:00 am
GRB
-
LHR
2 stops15h 55m
United Airlines
gio 4/307:25 am
LHR
-
GRB
2 stops15h 25m
United Airlines
Deal found 4/9$877
This United Airlines deal was found by Cheapflights users on 4/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 9/136:30 am
GRB
-
LHR
1 stop18h 15m
United Airlines
mer 9/237:30 am
LHR
-
GRB
2 stops17h 37m
United Airlines
Deal found 4/6$883
This United Airlines deal was found by Cheapflights users on 4/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 8/98:00 am
GRB
-
LHR
1 stop16h 45m
United Airlines
gio 8/207:30 am
LHR
-
GRB
2 stops17h 37m
United Airlines
Deal found 4/10$886
This Iberia deal was found by Cheapflights users on 4/9. 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.
dom 9/136:29 pm
GRB
-
LHR
1 stop11h 46m
Iberia
mer 9/236:15 am
LHR
-
GRB
2 stops22h 52m
Iberia
Deal found 4/9$888
This United Airlines deal was found by Cheapflights users on 4/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 8/112:30 pm
GRB
-
LHR
2 stops14h 10m
United Airlines
ven 8/217:30 am
LHR
-
GRB
2 stops17h 37m
United Airlines
Deal found 4/10$890
This United Airlines deal was found by Cheapflights users on 4/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 8/85:30 pm
GRB
-
LHR
1 stop31h 15m
United Airlines
ven 8/217:30 am
LHR
-
GRB
2 stops17h 37m
United Airlines
Deal found 4/10$891
This Iberia deal was found by Cheapflights users on 4/6. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 5/59:42 am
GRB
-
LHR
1 stop18h 48m
Iberia
mar 5/196:15 am
LHR
-
GRB
2 stops21h 48m
Iberia
Deal found 4/6$892
This United Airlines deal was found by Cheapflights users on 4/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 8/92:35 pm
GRB
-
LHR
2 stops13h 40m
United Airlines
ven 8/217:30 am
LHR
-
GRB
2 stops17h 37m
United Airlines
Deal found 4/10$894
This Expedia deal was found by Cheapflights users on 4/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 5/19:42 am
GRB
-
LGW
2 stops19h 08m
Iberia
dom 5/38:40 pm
LGW
-
GRB
2 stops31h 18m
Iberia
Deal found 4/8$974
This Expedia deal was found by Cheapflights users on 4/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 4/239:42 am
GRB
-
LGW
2 stops19h 08m
Iberia
ven 5/18:40 pm
LGW
-
GRB
2 stops31h 18m
Iberia
Deal found 4/9$975

Find flight deals from Green Bay to London

Discover tips and strategies to find the most affordable flight options for your journey from Green Bay (GRB) to London (LON). 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 aprile 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$873
(United Airlines)

One-way from

$543
(United Airlines)

Popular in

October

Cheapest in

January

Average price

$746
Provider with most accurate pricing for Green Bay Austin-Straubel-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-London (LON) flights.
Search Deals
From Green Bay Austin-Straubel to London (LON)
Search Deals
One-way flight from Green Bay Austin-Straubel to London (LON)
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($103 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($68 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Green Bay to London 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 aprile 11, 2026.
Use the filters below to find and compare flights from Green Bay to London 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

dom 9/13

6:30 am-6:30 am

2 stops18h 00m

London Heathrow

mer 9/23

7:30 am-7:07 pm

2 stops17h 37m

$886

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

mer 4/22

10:40 am-5:55 am

2 stops13h 15m

London Heathrow

mar 4/28

11:05 am-4:58 pm

1 stop11h 53m

$905

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

dom 9/6

6:30 am-6:30 am

2 stops18h 00m

London Heathrow

dom 9/20

9:30 am-10:59 pm

2 stops19h 29m

$957

Green BayLondon

GRB - LGW

GRBLGW

Green Bay Austin-Straubel

ven 5/1

9:42 am-10:50 am

2 stops19h 08m

London Gatwick

dom 5/3

8:40 pm-9:58 pm

2 stops31h 18m

$974

Green BayLondon

GRB - LGW

GRBLGW

Green Bay Austin-Straubel

gio 4/23

9:42 am-10:50 am

2 stops19h 08m

London Gatwick

ven 5/1

8:40 pm-9:58 pm

2 stops31h 18m

$975
Quickest round-trip

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

mer 8/12

3:42 pm-8:30 am

1 stop10h 48m

London Heathrow

mar 8/18

11:05 am-4:56 pm

1 stop11h 51m

$978

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

gio 8/13

3:42 pm-8:30 am

1 stop10h 48m

London Heathrow

mer 8/19

11:05 am-4:56 pm

1 stop11h 51m

$1,000

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

sab 8/8

5:30 pm-6:45 am

1 stop31h 15m

London Heathrow

mar 8/18

7:30 am-9:15 pm

2 stops19h 45m

$1,014

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

mer 5/13

5:00 am-6:30 am

2 stops19h 30m

London Heathrow

sab 5/23

8:00 am-2:00 pm

1 stop12h 00m

$1,042

Green BayLondon

GRB - LGW

GRBLGW

Green Bay Austin-Straubel

dom 9/6

5:25 pm-3:50 pm

2 stops16h 25m

London Gatwick

dom 9/20

10:25 am-9:58 pm

2 stops17h 33m

$1,045

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 29 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Green Bay to London

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 London in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Green Bay-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Green Bay-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Green Bay-London flights, Cheapflights users trust FlightHub the most. FlightHub 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 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 London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

Currently, October is the cheapest month in which you can book a flight from Green Bay to London (average of $650). Flying from Green Bay to London in June is currently the most expensive (average of $1,300). 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.

How much does it cost to fly round-trip from Green Bay to London?

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated aprile 11, 2026.
Read through reviews of airlines operating flights from Green Bay to London, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,569 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,569 reviews
United Airlines
7.4
Good
9,569 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,572 reviews
United Airlines
7.4
Good
9,569 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

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

    Located just 5.9 mi from the city center, Green Bay Austin-Straubel is the airport most travelers will use when flying to London from Green Bay. Booking flights from Austin-Straubel (GRB) to London should be relatively easy as there are 0 daily outbound flights to London from 3 different airlines.

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

    United Airlines, Iberia, and Delta can get you from Green Bay to London in just under 16h 25m. Your travel time can differ by up to 2h 43m. Airlines will cover a distance of 3854 mi. This flight may include one or multiple stops.

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

    Currently priced at $676, British Airways will fly you from Green Bay to London and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $697 and $722, respectively. Users have found that British Airways is 29% cheaper than the other options available to this destination.

  • What are the most popular routes from Green Bay to London?

    Most travelers choose Green Bay Austin-Straubel - London Heathrow, Green Bay Austin-Straubel - London City or Green Bay Austin-Straubel - London Gatwick when deciding on the best route from Green Bay to London.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Green Bay to London (average of $650). Flying from Green Bay to London in June is currently the most expensive (average of $1,300). 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?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Borehamwood
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Sutton
Stansted

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Green Bay to London

Discover the top 3 airlines that operate flights from Green Bay to London. 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 aprile 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$676Average$815FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$697Average$1,299FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$722Average$897FlexibilityNo cancel feeOn-time69%

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