GRB - LON

$863 Find Cheap Flights from Green Bay to London

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Green Bay to London departing on 9/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Green Bay to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Green Bay to London, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$863
Typical prices: $846-$722
Iberia
Sun 9/13Wed 9/23
GRB - LHR • 1 stop
Top airlines
Iberia
Cheapest • from $863 (round-trip)
American Airlines
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Green Bay and London. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Chicago (ORD)
Cheapest • Avg $894 (round-trip)
Detroit (DTW)
Shortest trip • 9h 25m (one-way)
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 44% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Green Bay to London (GRB-LON)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Green Bay to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Green Bay to London

Sun, Sep 13 - Wed, Sep 23
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
Mon, Sep 7 - Fri, Sep 25
Delta Logo
5:30 am - 6:25 am
GRB
-
LHR
18h 55m
1 stop
Delta Logo
6:30 am - 3:32 pm
LHR
-
GRB
15h 02m
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
Sun, Sep 13 - Wed, Sep 23
Delta Logo
10:50 am - 10:20 am
GRB
-
LHR
17h 30m
2 stops
Delta Logo
6:30 am - 9:58 pm
LHR
-
GRB
21h 28m
2 stops
$883Delta
Mon, Sep 7 - Fri, Sep 25
British Airways Logo
12:27 pm - 12:15 pm
GRB
-
LHR
17h 48m
1 stop
British Airways Logo
9:45 am - 5:40 pm
LHR
-
GRB
13h 55m
1 stop
$892British Airways
Sun, Sep 13 - Wed, Sep 23
British Airways Logo
9:55 am - 10:50 am
GRB
-
LHR
18h 55m
1 stop
British Airways Logo
9:45 am - 5:40 pm
LHR
-
GRB
13h 55m
1 stop
$893British Airways
Tue, Sep 15 - Fri, Oct 2
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
Mon, Sep 7 - Fri, Sep 25
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
Multiple Airlines Logo
6:54 pm - 6:55 pm
GRB
-
LHR
18h 01m
2 stops
Multiple Airlines Logo
6:15 am - 9:04 am
LHR
-
GRB
32h 49m
2 stops
$920Multiple Airlines
Booking Insights

KAYAK's insights & trends for Green Bay to London flights

Get data-powered insights and trends into flights from Green Bay to London to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Green Bay to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Green Bay to London, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Green Bay to London is October, where tickets cost $650 (return) on average. On the other hand, the most expensive months are November and June, where the average cost of round-trip tickets is $4,893 and $1,236 respectively.

Find deals

Good to know

Cheapest flight$863
Most popular time to fly and prices are also 23% lower on average.
Flight from Green Bay to London Heathrow Airport

When to book flights from Green Bay to London

Are your dates flexible? Find out the best times to travel from Green Bay to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Green Bay to London

  • What is the cheapest flight from Green Bay to London?

    In the last 3 days, the lowest price for a flight from Green Bay to London was $863 for a round-trip ticket.

  • Do I need a passport to fly between Green Bay and London?

    Yes, you’ll need a passport to travel to London from Green Bay.

  • Which airports will I be using when flying from Green Bay to London?

    Green Bay is served by only 1 airport and there are 2 airports in London. You will leave Green Bay from Green Bay Austin-Straubel and you will be arriving in London at one of these airports: London Gatwick or London Heathrow.

  • Which aircraft models fly most regularly from Green Bay to London?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Green Bay to London?

    Star Alliance, and oneworld are the airline alliances operating flights between Green Bay and London, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Green Bay to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Green Bay to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Green Bay to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Green Bay is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Green Bay to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Green Bay with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Green Bay to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Green Bay up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Green Bay to London

 
See real verified KAYAK customer reviews for airlines flying from Green Bay to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Green Bay to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
American AirlinesOverall score based on 11668 reviews
6.9Entertainment
7.9Crew
7.5Boarding
7.2Comfort
6.4Food
Airline reviews

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

2.0 MediocreAnonymous, May 2026
ORD - LHR
Read more American Airlines reviews

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

The business class layout of chairs was weired. You are sitting directly across stranger.,

We did not have enough time to make our connecting flight. As a result, we were put onto a different airline for our second leg. The different airline was NOT comparable to British Airlines, and our arrival was significantly delayed. The actual flight on BA was amazing.

Tv screens and movie selection v good. Friendly staff. They were really worried about max capacity and room for carryons. That is never fun but i had no problem finding space when I boarded.

My flight to London from Philadelphia was cancelled due to weather.

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

Everything you need to know for your flight from Green Bay to London

Information on your arrival and departure airports

Green Bay (GRB)