GRB - LHR

$426 Find Cheap Flights from Green Bay to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Green Bay to Heathrow departing on 8/10. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
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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Flights Deals

Cheap Flights from Green Bay to Heathrow

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Green Bay to Heathrow 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.

Recent round-trip flight deals from Green Bay to Heathrow

KAYAK's recommended round-trip deals from the most popular airlines that fly from Green Bay to Heathrow.
Discover the best prices for you by selecting your travel dates on KAYAK.
American Airlines Logo
2:51 pm - 10:30 amGRB-LHR
13h 39m1 stop
American Airlines Logo
9:15 am - 5:40 pmLHR-GRB
14h 25m1 stop
$758American Airlines
Find Deal
Thu, Oct 16 - Fri, Oct 24
Delta Logo
7:00 am - 8:50 amGRB-LHR
19h 50m2 stops
Delta Logo
12:25 pm - 9:33 pmLHR-GRB
15h 08m1 stop
$762Delta
Find Deal
Thu, Oct 16 - Fri, Oct 24
United Airlines Logo
1:22 pm - 6:20 amGRB-LHR
10h 58m1 stop
United Airlines Logo
7:30 am - 7:50 pmLHR-GRB
18h 20m2 stops
$875United Airlines
Find Deal
Fri, Sep 5 - Sun, Sep 14
United Airlines Logo
3:45 pm - 10:40 amGRB-LHR
12h 55m2 stops
United Airlines Logo
7:30 am - 9:43 pmLHR-GRB
20h 13m2 stops
$880United Airlines
Find Deal
Fri, Sep 5 - Sun, Sep 14
KLM Logo
5:30 am - 6:45 amGRB-LHR
19h 15m1 stop
KLM Logo
11:45 am - 8:38 pmLHR-GRB
14h 53m1 stop
$888KLM
Find Deal
Fri, Sep 5 - Sun, Sep 14
British Airways Logo
5:53 pm - 10:30 amGRB-LHR
10h 37m1 stop
British Airways Logo
6:10 am - 5:23 pmLHR-GRB
17h 13m2 stops
$1,056British Airways
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Tue, Jun 10 - Tue, Jun 17
KLM Logo
5:33 am - 6:45 amGRB-LHR
19h 12m1 stop
KLM Logo
11:45 am - 8:36 pmLHR-GRB
14h 51m1 stop
$1,079KLM
Find Deal
Tue, Jun 10 - Tue, Jun 17
 Logo
3:54 pm - 11:25 amGRB-LHR
13h 31m2 stops
 Logo
6:50 am - 3:11 pmLHR-GRB
14h 21m2 stops
$1,337
Find Deal
Thu, Jun 12 - Thu, Jun 26
 Logo
1:10 pm - 9:40 amGRB-LHR
14h 30m2 stops
 Logo
11:20 am - 11:30 amLHR-GRB
30h 10m3 stops
$1,942
Find Deal
Thu, Jun 12 - Thu, Jun 26
British Airways Logo
2:51 pm - 9:05 amGRB-LHR
12h 14m1 stop
British Airways Logo
7:10 pm - 11:23 pmLHR-GRB
34h 13m2 stops
$4,822British Airways
Find Deal
Tue, Sep 9 - Mon, Sep 15
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KAYAK's insights & trends for Green Bay to Heathrow flights

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

Which airlines provide the cheapest flights from Green Bay to London Heathrow Airport?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Green Bay to London Heathrow Airport were found on American Airlines ($758) and Delta ($762).

Good to know

Low seasonMarch
High seasonJune
Cheapest flight$426
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 44% increase in price.
Flight from Green Bay to London Heathrow Airport

When to book flights from Green Bay to Heathrow

Are your dates flexible? Find out the best times to travel from Green Bay to Heathrow 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 Green Bay to London Heathrow Airport flights

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

    In the last 3 days, the lowest price for a flight from Green Bay to London Heathrow Airport was $426 for a one-way ticket and $758 for a round-trip.

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

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

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

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

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

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

  • Which is the best airline for flights from Green Bay to London, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Green Bay to London are United Airlines and American Airlines. With an average price for the route of $1,099 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,379 and an overall rating of 7.2.

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

    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 Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport 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 Heathrow Airport?

    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 Heathrow Airport with an airline and back to Green Bay with another airline. Booking your flights between Green Bay and LHR can sometimes prove cheaper using this method.

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

    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 Heathrow Airport from Green Bay up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 3 airlines serving from Green Bay to Heathrow

 
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 Heathrow? 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.
7.4
United AirlinesOverall score based on 8696 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

10.0 ExcellentAnonymous, Apr 2025SFO - HKG
Read more United Airlines reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Electric plugs didn't work. Entertainment system wasn't working

Crew was great and responsive. Entertainment quit working with about 4 hours remaining on the flight. My seat cushion was broken.

Not very good , the stewardess were unfriendly and they don't like to be bothered. Cos was a night flight and they need to sleep.

British Airways staff are very polite and willing to help.

This particular flight wasn't very full at the back, so there were three seats available for spreading out and getting relatively comfortable

Seating was horrible. Small seats. Access to flight information and extras very iser unfriendly. Kept losing internet after paying for it. Staff in madison was as unprofessional and unhelpful.

There were several issues with this flight. I have flown quite often internationally and I was surprised by the lack of presence of attendants other than meal and drink times. The food was not best but I feel that is the norm. We also had to get off the plane once in London via stairs and bus to the terminal. Anyone who had another flight had to then get another bus to another terminal. This causes me to miss my flight and have to rebook.

The boarding process was a nightmare and though we were traveling business class, we were in Group 2 and the organization was terrible. The Business Class on this flight was crowded and did not feel clean and nice. Overall, I would not travel Business again on the American Airline flight through British Airways Not nearly special enough for the considerable cost .

Not too impressed with them to be honest. They had forgotten my gf meal, despite the fact that the app had notified me that it was sorted. Apparently there is a ‘glitch’ in the system, according to one of the stewardesses, and has been for a while. Also the legroom in economy is way too small (and I’m a slight person) and are very uncomfortable. An extra Internal flight I booked via the app, had not even given me the option to order a meal, so was unaware of that and left without food on a 9 hr. flight !! Don’t think I’ll use AA again after this.

There were several different delays but we ended up being delayed a total of 40 mins or so. It was annoying we had a gate change which made it take longer to leave DFW, and we had to check our carry on. Ugh

3 hour delay on run way, not even a drink offered, staff seemed rude and rushed, felt unwell so asked twice for paracetamol and was told to wait, never got it

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

The food was pathetic. There wasn't much leg room and recline space for such a long flight. No tea/ coffee for a 2-3 hour connecting flight without purchasing! Really!?

Service was very good. Because I use a cane, I was allowed to use Priority Boarding. Biggest problem was extremely limited leg room in Economy class seats. For airplane food, it was alright.

Experience was good. Could have been better if we didn’t have to board an hour before the flight to ghana and miss relaxing time in the lounge. That process was very stressful

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

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