HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Keflavik Intl

$742+ Cheap flights from Green Bay (GRB) to Keflavik Intl (KEF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — KEF
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Green Bay to Keflavik Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Green Bay to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Green Bay (GRB) to Keflavik Intl (KEF). 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 April 29, 2025.

Round-trip from

$742
(KLM)
From Green Bay Austin-Straubel to Reykjavik Keflavik Intl
Search Deals

Find flight deals from Green Bay to Keflavik Intl

Cheapest flights from Green Bay to Keflavik Intl
Explore the most affordable flight options available from Green Bay to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This KLM deal was found by Cheapflights users on 4/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/234:21 pmGRB - KEF
1 stop9h 39mKLM
Fri 8/18:50 amKEF - GRB
1 stop12h 31mKLM
Deal found 4/29$742
This Delta deal was found by Cheapflights users on 4/29. 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.
Wed 7/234:21 pmGRB - KEF
1 stop9h 39mDelta
Fri 8/18:50 amKEF - GRB
2 stops18h 13mDelta
Deal found 4/29$747
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 9/158:00 amGRB - KEF
2 stops43h 35mUnited Airlines
Wed 9/2410:00 amKEF - GRB
2 stops32h 59mUnited Airlines
Deal found 4/29$833
This Air France deal was found by Cheapflights users on 4/28. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1212:06 pmGRB - KEF
2 stops13h 14mMultiple Airlines
Sun 7/139:30 amKEF - GRB
1 stop17h 33mMultiple Airlines
Deal found 4/28$904
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/283:49 pmGRB - KEF
1 stop11h 41mLufthansa
Fri 7/412:25 amKEF - GRB
2 stops26h 13mLufthansa
Deal found 4/29$1,264

Cheapflights Fare Finder

Customize your flight search to find flights from Green Bay to Keflavik Intl 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 April 29, 2025.
Use the filters below to find and compare flights from Green Bay to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Green Bay

Fly to

Keflavik Intl

Route

Depart

Return

Price

Green BayReykjavik

GRB - KEF

GRBKEF

Green Bay Austin-Straubel

Wed 7/23

4:21 pm-7:00 am

1 stop9h 39m

Reykjavik Keflavik Intl

Fri 8/1

8:50 am-4:21 pm

1 stop12h 31m

$742

Green BayReykjavik

GRB - KEF

GRBKEF

Green Bay Austin-Straubel

Wed 7/23

12:10 pm-7:00 am

1 stop13h 50m

Reykjavik Keflavik Intl

Fri 8/1

8:50 am-10:03 pm

2 stops18h 13m

$747

Green BayReykjavik

GRB - KEF

GRBKEF

Green Bay Austin-Straubel

Mon 9/15

8:00 am-8:35 am

2 stops43h 35m

Reykjavik Keflavik Intl

Wed 9/24

10:00 am-1:59 pm

2 stops32h 59m

$833

Green BayReykjavik

GRB - KEF

GRBKEF

Green Bay Austin-Straubel

Mon 5/12

12:06 pm-6:20 am

2 stops13h 14m

Reykjavik Keflavik Intl

Sun 7/13

9:30 am-10:03 pm

1 stop17h 33m

$904

Green BayReykjavik

GRB - KEF

GRBKEF

Green Bay Austin-Straubel

Sat 6/28

3:49 pm-8:30 am

1 stop11h 41m

Reykjavik Keflavik Intl

Fri 7/4

12:25 am-9:38 pm

2 stops26h 13m

$1,264

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Best time to book a flight from Green Bay to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl 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 Reykjavik Keflavik Intl Airport

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. 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 Keflavik Intl. Reviews last updated April 29, 2025.
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Lufthansa
6.7
Okay
7,042 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Green Bay to Keflavik Intl. 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 Reykjavik Keflavik Intl?

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Green Bay to Keflavik Intl 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 Reykjavik Keflavik Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Green Bay to Reykjavik Keflavik Intl Airport (average of $328). Flying from Green Bay to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). 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 Green Bay?

Book flights to Green Bay if you plan to visit one of these locations
Keflavik

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.