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Keflavik Intl

$228+ Cheap flights from Chicago (CHI) to Keflavik Intl (KEF)

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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KEF
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Reykjavik Keflavik Intl are usually found in January or April, booked 61 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from Chicago to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) 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 July 30, 2025.

Round-trip from

$375
(Ticket)

One-way from

$205
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$745

Good round-trip deal

$453 or less

Good one-way deal

$234 or less
From Chicago (CHI) to Reykjavik Keflavik Intl
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One-way flight from Chicago (CHI) to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 6% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from Chicago (CHI) to Reykjavik Keflavik Intl.
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Find flight deals from Chicago to Keflavik Intl

Cheapest flights from Chicago to Keflavik Intl
Explore the most affordable flight options available from Chicago to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This Ticket deal was found by Cheapflights users on 7/28. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1710:15 pmORD - KEF
Nonstop6h 05mIcelandair
Tue 8/267:35 pmKEF - ORD
Nonstop6h 40mIcelandair
Deal found 7/28$375
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:10 amORD - KEF
1 stop17h 45mMultiple Airlines
Wed 10/13:05 pmKEF - ORD
1 stop25h 05mMultiple Airlines
Deal found 7/30$444
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/151:49 pmMDW - KEF
1 stop10h 06mMultiple Airlines
Wed 9/243:05 pmKEF - MDW
1 stop32h 38mMultiple Airlines
Deal found 7/29$510
This Delta deal was found by Cheapflights users on 7/30. 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.
Sun 9/216:15 pmMDW - KEF
1 stop31h 05mDelta
Wed 10/18:45 amKEF - MDW
1 stop14h 50mDelta
Deal found 7/30$549
This KLM deal was found by Cheapflights users on 7/29. 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.
Mon 9/151:08 pmMDW - KEF
1 stop12h 12mKLM
Wed 9/248:45 amKEF - MDW
2 stops13h 50mKLM
Deal found 7/29$550

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago 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 July 30, 2025.
Use the filters below to find and compare flights from Chicago to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Chicago

Fly to

Keflavik Intl

Route

Depart

Return

Price

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 8/17

10:15 pm-9:20 am

Nonstop6h 05m

Reykjavik Keflavik Intl

Tue 8/26

7:35 pm-9:15 pm

Nonstop6h 40m

$375

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 9/21

6:10 am-4:55 am

1 stop17h 45m

Reykjavik Keflavik Intl

Wed 10/1

3:05 pm-11:10 am

1 stop25h 05m

$444

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Mon 9/15

1:49 pm-4:55 am

1 stop10h 06m

Reykjavik Keflavik Intl

Wed 9/24

3:05 pm-6:43 pm

1 stop32h 38m

$510

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Sun 9/21

6:15 pm-6:20 am

1 stop31h 05m

Reykjavik Keflavik Intl

Wed 10/1

8:45 am-6:35 pm

1 stop14h 50m

$549

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Mon 9/15

1:08 pm-6:20 am

1 stop12h 12m

Reykjavik Keflavik Intl

Wed 9/24

8:45 am-5:35 pm

2 stops13h 50m

$550

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 9/7

6:10 am-4:55 am

1 stop17h 45m

$228

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Fri 9/19

1:49 pm-4:55 am

1 stop10h 06m

$256

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 9/4

5:30 pm-8:15 am

1 stop33h 45m

$370

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 8/5

10:15 pm-9:20 am

Nonstop6h 05m

$395

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Tue 8/5

1:46 pm-7:00 am

1 stop12h 14m

$497

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 11 results
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Best time to book a flight from Chicago to Keflavik Intl

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

How far ahead should I book a flight from Chicago to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Keflavik Intl. Price data was last updated on July 25, 2025.

The best time to book flights from Chicago to Reykjavik Keflavik Intl Airport is 61 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Chicago to Reykjavik Keflavik Intl Airport (average of $328). Flying from Chicago to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $653). 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.

What is the cheapest time of day to fly from CHI to KEF?

Find hourly flight availability from Chicago to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 20% on flights from Chicago to Reykjavik Keflavik Intl Airport by exploring options for tickets at noon.

Weekly flight availability from Chicago to Reykjavik Keflavik Intl Airport

Explore weekly flight availability from Chicago to Keflavik Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 30, 2025.

The most flights from CHI to KEF are scheduled on a Monday (7 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 on average).

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 July 30, 2025.
Get a feel of what it's like to fly with Delta, KLM, and WestJet from Chicago to Reykjavik Keflavik Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,975 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Icelandair
7.0
Good
519 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Chicago 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 are the cheapest airlines flying from Chicago to Reykjavik Keflavik Intl Airport round-trip?

    Icelandair, at $375, was found to be the cheapest airline from Chicago to Reykjavik Keflavik Intl Airport.Alternate airlines to your destination round-trip include Delta and KLM. Users have found that Icelandair is 43% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Chicago to Reykjavik Keflavik Intl Airport one-way?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $370. However, be on the lookout for offers from KLM and Delta, as they are both options that can get you from Chicago to Reykjavik Keflavik Intl Airport for a low price.

  • What are the most reliable airlines from Chicago to Reykjavik Keflavik Intl Airport?

    The top 3 most reliable airlines when flying from Chicago to Reykjavik Keflavik Intl Airport are Icelandair (80%), Air Canada (44%) and Austrian Airlines (44%).

  • What are the cheapest flights from Chicago to Reykjavik Keflavik Intl Airport?

    Looking at all options, your cheapest flight can be booked for $168. While the most popular route (Chicago O'Hare Intl - Reykjavik Keflavik Intl) can be booked for $381 on average our data indicates $1,286 when flying from Chicago to Reykjavik Keflavik Intl Airport.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Chicago to Reykjavik Keflavik Intl Airport (average of $328). Flying from Chicago to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $653). 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 Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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Top 3 airlines flying from Chicago to Keflavik Intl

Discover the top 3 airlines that operate flights from Chicago to Keflavik Intl. 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$478Average$656FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$532Average$636FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$612Average$711FlexibilityNo cancel feeOn-time69%

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