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Cheap flights from Green Bay to London from $599

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Green Bay to London departing on 7/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Green Bay to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
2:51 pm - 7:40 am
GRB
-
LHR
10h 49m
1 stop
Iberia Logo
6:15 am - 11:07 pm
LHR
-
GRB
22h 52m
2 stops
$863Iberia
Sun, Sep 13 - Wed, Sep 23
Iberia Logo
6:29 pm - 10:50 am
GRB
-
LHR
10h 21m
1 stop
Iberia Logo
6:15 am - 11:07 pm
LHR
-
GRB
22h 52m
2 stops
$864Iberia
Sun, Sep 13 - Wed, Sep 23
Delta Logo
5:30 am - 6:25 am
GRB
-
LHR
18h 55m
1 stop
Delta Logo
6:30 am - 4:33 pm
LHR
-
GRB
16h 03m
2 stops
$878Delta
Mon, Sep 7 - Fri, Sep 25
KLM Logo
5:30 am - 6:25 am
GRB
-
LHR
18h 55m
1 stop
KLM Logo
6:30 am - 3:32 pm
LHR
-
GRB
15h 02m
2 stops
$879KLM
Mon, Sep 7 - Fri, Sep 25
Delta Logo
4:00 pm - 1:15 pm
GRB
-
LHR
15h 15m
2 stops
Delta Logo
6:30 am - 4:33 pm
LHR
-
GRB
16h 03m
2 stops
$882Delta
Mon, Sep 7 - Fri, Sep 25
Delta Logo
5:30 am - 1:15 pm
GRB
-
LHR
25h 45m
1 stop
Delta Logo
9:55 am - 9:58 pm
LHR
-
GRB
18h 03m
2 stops
$883Delta
Tue, Sep 15 - Fri, Oct 2
British Airways Logo
3:21 pm - 8:05 am
GRB
-
LHR
10h 44m
1 stop
British Airways Logo
9:45 am - 11:07 pm
LHR
-
GRB
19h 22m
1 stop
$892British Airways
Mon, Sep 7 - Fri, Sep 25
Iberia Logo
6:29 pm - 10:50 am
GRB
-
LHR
10h 21m
1 stop
Iberia Logo
9:45 am - 5:40 pm
LHR
-
GRB
13h 55m
1 stop
$897Iberia
Tue, Sep 15 - Fri, Oct 2
Iberia Logo
12:27 pm - 8:05 am
GRB
-
LHR
13h 38m
1 stop
Iberia Logo
9:45 am - 5:40 pm
LHR
-
GRB
13h 55m
1 stop
$898Iberia
Mon, Sep 7 - Fri, Sep 25
KLM Logo
5:30 am - 6:25 am
GRB
-
LHR
18h 55m
1 stop
KLM Logo
8:55 am - 9:57 pm
LHR
-
GRB
18h 02m
1 stop
$907KLM
Wed, Oct 14 - Tue, Oct 27

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KLM flights from Green Bay to London Heathrow Airport

Our best KLM deals on Green Bay to London Heathrow Airport flight tickets
KLM
Sep 7
GRB5:30 amGreen Bay Austin-Straubel
18h 55m
1 stop
LHR6:25 amLondon Heathrow
Sep 25
LHR6:30 amLondon Heathrow
15h 02m
2 stops
GRB3:32 pmGreen Bay Austin-Straubel
$879
KLM
Oct 14
GRB5:30 amGreen Bay Austin-Straubel
18h 55m
1 stop
LHR6:25 amLondon Heathrow
Oct 27
LHR8:55 amLondon Heathrow
18h 02m
1 stop
GRB9:57 pmGreen Bay Austin-Straubel
$907
KLM
May 6
GRB4:22 pmGreen Bay Austin-Straubel
14h 43m
1 stop
LHR1:05 pmLondon Heathrow
May 14
LHR12:25 pmLondon Heathrow
33h 14m
1 stop
GRB3:39 pmGreen Bay Austin-Straubel
$1,065

United Airlines flights from Green Bay to London Heathrow Airport

Our best United Airlines deals on Green Bay to London Heathrow Airport flight tickets
United Airlines
Aug 30
GRB1:15 pmGreen Bay Austin-Straubel
11h 30m
1 stop
LHR6:45 amLondon Heathrow
Sep 12
LHR6:50 amLondon Heathrow
14h 17m
2 stops
GRB3:07 pmGreen Bay Austin-Straubel
$1,101
United Airlines
Aug 30
GRB2:30 pmGreen Bay Austin-Straubel
14h 10m
2 stops
LHR10:40 amLondon Heathrow
Sep 12
LHR6:50 amLondon Heathrow
16h 06m
2 stops
GRB4:56 pmGreen Bay Austin-Straubel
$1,105
United Airlines
May 6
GRB1:15 pmGreen Bay Austin-Straubel
14h 45m
2 stops
LHR10:00 amLondon Heathrow
May 14
LHR7:25 amLondon Heathrow
17h 36m
2 stops
GRB7:01 pmGreen Bay Austin-Straubel
$1,210

momondo Fare Finder

 
Customize your flight search to find flights from Green Bay to London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated May 6, 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

Sun 9/13

2:51 pm-7:40 am

1 stop10h 49m

London Heathrow

Wed 9/23

6:15 am-11:07 pm

2 stops22h 52m

$863

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Sun 9/13

6:29 pm-10:50 am

1 stop10h 21m

London Heathrow

Wed 9/23

6:15 am-11:07 pm

2 stops22h 52m

$864

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Mon 9/7

5:30 am-6:25 am

1 stop18h 55m

London Heathrow

Fri 9/25

6:30 am-4:33 pm

2 stops16h 03m

$878

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Mon 9/7

5:30 am-6:25 am

1 stop18h 55m

London Heathrow

Fri 9/25

6:30 am-3:32 pm

2 stops15h 02m

$879

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Mon 9/7

4:00 pm-1:15 pm

2 stops15h 15m

London Heathrow

Fri 9/25

6:30 am-4:33 pm

2 stops16h 03m

$882

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Tue 9/15

5:30 am-1:15 pm

1 stop25h 45m

London Heathrow

Fri 10/2

9:55 am-9:58 pm

2 stops18h 03m

$883

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Mon 9/7

3:21 pm-8:05 am

1 stop10h 44m

London Heathrow

Fri 9/25

9:45 am-11:07 pm

1 stop19h 22m

$892
Quickest round-trip

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Tue 9/15

6:29 pm-10:50 am

1 stop10h 21m

London Heathrow

Fri 10/2

9:45 am-5:40 pm

1 stop13h 55m

$897

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Mon 9/7

12:27 pm-8:05 am

1 stop13h 38m

London Heathrow

Fri 9/25

9:45 am-5:40 pm

1 stop13h 55m

$898

Green BayLondon

GRB - LHR

GRBLHR

Green Bay Austin-Straubel

Wed 10/14

5:30 am-6:25 am

1 stop18h 55m

London Heathrow

Tue 10/27

8:55 am-9:57 pm

1 stop18h 02m

$907

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Green Bay 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

What is the typical price of a round-trip flight between Green Bay and London Heathrow Airport?

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

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Green Bay, with most prices found around $662. If you’re not able to fly to London Heathrow Airport in October, then May is your next best option. Flight prices from Green Bay to London Heathrow Airport during May average around $749.

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

You could potentially save up to 13% on your flight if you consider stops on a Green Bay to London Heathrow Airport flight.

When to book flights from Green Bay to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Green Bay to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Green Bay to London Heathrow Airport (GRB to LHR) flight deals and tips

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

Fastest flight time

11h 06m

Direct flights

None
The fastest flight from Green Bay to London Heathrow Airport takes 11h 06m
There are no direct flights from Green Bay to London Heathrow Airport. There are no popular flight routes from Green Bay to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Green Bay to London Heathrow Airport

  • How far is Green Bay Austin-Straubel to London Heathrow by plane?

    Green Bay Austin-Straubel and London Heathrow are 3827.3 mi apart from one another. A reasonable flight in good conditions will take 11h 06m.

  • When did momondo last update prices for flights from Green Bay Austin-Straubel Airport to London Heathrow Airport?

    Prices for flights from Green Bay Austin-Straubel Airport to London Heathrow Airport are updated daily.

  • How many operators does momondo search for flights from Green Bay Austin-Straubel Airport to London Heathrow Airport?

  • How old do you have to be to fly from Green Bay Austin-Straubel Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Green Bay Austin-Straubel Airport 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.

  • What is the most popular airline from Green Bay to London Heathrow Airport?

Best airlines flying from Green Bay to London Heathrow Airport

Compare and see reviews for airlines that fly from Green Bay to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $650Free CancellationRating
6.7
7,944 reviews
Search British Airways flights
American AirlinesPriceFrom $697Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights
United AirlinesPriceFrom $722Free CancellationRating
7.4
9,684 reviews
Search United Airlines flights

Traveling to a place near London?

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Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Green Bay.

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

Yes. All flights to London from Green Bay on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Green Bay to London?

momondo helps you find the best flight between Green Bay 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 Green Bay to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Green Bay to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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