CHI - KEF

$351 Find Cheap Flights from Chicago to Reykjavik - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Keflavik Intl departing on 9/15. 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

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Everything you should know

Cheapest round-trip
$408
Typical prices: $558-$784
Icelandair
Fri 9/18Sun 9/27
ORD - KEF • Non-stop
Cheapest non-stop
$408
Typical prices: $548-$791
Icelandair
Fri 9/18Sat 9/26
ORD - KEF • Non-stop
Top airlines
Icelandair
Cheapest • from $408 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with Icelandair and United Airlines. Average duration is 6h 11m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
ORD
-
KEF
Cheapest
ORD
-
KEF
Most popular
Insights
Insights
Insights
Insights
Top layover airports
Minneapolis (MSP)
Cheapest • Avg $136 (round-trip)
Detroit (DTW)
Shortest trip • 8h 09m (one-way)
Insights
Insights
Insights
Insights
When to travel
March
Cheapest • 50% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Keflavik Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Chicago to Keflavik Intl (CHI-KEF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Keflavik Intl 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 Chicago to Keflavik Intl

Fri, Sep 18 - Sun, Sep 27
Icelandair Logo
10:25 pm - 9:30 am
ORD
-
KEF
6h 05mnonstop
Icelandair Logo
4:25 pm - 6:15 pm
KEF
-
ORD
6h 50mnonstop
$408Icelandair
Sat, Sep 5 - Sun, Sep 13
Icelandair Logo
10:25 pm - 9:30 am
ORD
-
KEF
6h 05mnonstop
Icelandair Logo
4:25 pm - 6:15 pm
KEF
-
ORD
6h 50mnonstop
$411Icelandair
Sat, Jul 18 - Wed, Jul 22
Virgin Atlantic Logo
3:55 pm - 7:00 am
ORD
-
KEF
10h 05m
1 stop
Virgin Atlantic Logo
9:30 am - 3:05 pm
KEF
-
ORD
10h 35m
1 stop
$414Virgin Atlantic
Sat, Sep 26 - Sun, Oct 4
KLM Logo
2:00 pm - 7:00 am
MDW
-
KEF
12h 00m
1 stop
KLM Logo
9:30 am - 6:19 pm
KEF
-
MDW
13h 49m
1 stop
$420KLM
Fri, Sep 25 - Sun, Oct 4
Delta Logo
8:25 am - 7:00 am
ORD
-
KEF
17h 35m
1 stop
Delta Logo
9:30 am - 7:33 pm
KEF
-
ORD
15h 03m
1 stop
$420Delta
Sat, Sep 12 - Tue, Oct 6
Virgin Atlantic Logo
3:55 pm - 7:00 am
ORD
-
KEF
10h 05m
1 stop
Virgin Atlantic Logo
11:25 am - 5:16 pm
KEF
-
ORD
10h 51m
1 stop
$421Virgin Atlantic
Thu, Sep 17 - Sat, Sep 26
KLM Logo
9:59 am - 7:00 am
MDW
-
KEF
16h 01m
1 stop
KLM Logo
9:30 am - 6:19 pm
KEF
-
MDW
13h 49m
1 stop
$423KLM
Sat, Sep 26 - Sat, Oct 3
Delta Logo
1:19 pm - 9:30 am
MDW
-
KEF
15h 11m
2 stops
Delta Logo
9:30 am - 6:19 pm
KEF
-
MDW
13h 49m
1 stop
$425Delta
Sat, Sep 12 - Tue, Oct 6
Multiple Airlines Logo
4:52 pm - 7:00 am
MDW
-
KEF
9h 08m
1 stop
Multiple Airlines Logo
11:25 am - 4:20 pm
KEF
-
MDW
33h 55m
2 stops
$427Multiple Airlines
Sun, Oct 4 - Fri, Oct 9
Multiple Airlines Logo
9:59 am - 7:00 am
MDW
-
KEF
16h 01m
1 stop
Multiple Airlines Logo
11:25 am - 3:23 pm
KEF
-
MDW
32h 58m
2 stops
$431Multiple Airlines
Booking Insights

KAYAK's insights & trends for Chicago to Keflavik Intl flights

Get data-powered insights and trends into flights from Chicago to Keflavik Intl to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Chicago to Reykjavik Keflavik Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Chicago to Reykjavik Keflavik Intl Airport departing in September.

What is the cheapest Chicago to Reykjavik Keflavik Intl Airport flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Chicago to Reykjavik Keflavik Intl Airport costs $569 on the route between Chicago O'Hare Intl Airport (ORD) and Reykjavik Keflavik Intl Airport (KEF). It is also the most popular route.

What’s the cheapest day of the week to fly from Chicago to Reykjavik?

The average price of all round-trip flights from Chicago to Reykjavik Keflavik Intl Airport clicked on KAYAK for each day over the last 12 months.

When flying from Chicago to Reykjavik, you should consider leaving on a Wednesday and avoid Mondays if you are looking for the best rates. For your return to Chicago, you’ll find the best rates on Thursdays and the most expensive ones on Tuesdays.

What is the cheapest month to fly from Chicago to Reykjavik Keflavik Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago to Reykjavik Keflavik Intl Airport, 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 Chicago to Reykjavik Keflavik Intl Airport is March, where tickets cost $173 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $529 and $447 respectively.

Can I save money by flying with a layover from Chicago to Reykjavik Keflavik Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $433 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago to Reykjavik Keflavik Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$351
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 27% increase in price.
Flight from Chicago O'Hare Airport to Reykjavik

When to book flights from Chicago to Keflavik Intl

Are your dates flexible? Find out the best times to travel from Chicago to Keflavik Intl 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 Chicago to Reykjavik flights

  • What is the cheapest flight from Chicago to Reykjavik Keflavik Intl Airport?

    In the last 5 days, the lowest price for a flight from Chicago to Reykjavik Keflavik Intl Airport was $351 for a one-way ticket and $408 for a round-trip.

  • Do I need a passport to fly between Chicago and Reykjavik?

    A passport is required to fly from Chicago to Reykjavik.

  • Which airports will I be using when flying from Chicago to Reykjavik?

    On your way to Reykjavik, you’ll fly out from one of these Chicago airports: Chicago Midway or Chicago O'Hare Intl. You’ll be landing at Reykjavik Keflavik Intl.

  • Which airlines offer Wi-Fi service onboard planes from Chicago to Reykjavik?

    All the following airlines offer inflight Wi-Fi service on the Chicago to Reykjavik flight route: Finnair, American Airlines, Iberia, British Airways, Lufthansa, Air France, and SWISS.

  • Which aircraft models fly most regularly from Chicago to Reykjavik?

    The Boeing 757-200 is the aircraft model that flies most regularly on the Chicago to Reykjavik flight route.

  • Which airline alliances offer flights from Chicago to Reykjavik?

    Star Alliance is the only airline alliance operating flights between Chicago and Reykjavik.

  • On which days can I fly direct from Chicago to Reykjavik?

    There are nonstop flights from Chicago to Reykjavik on a daily basis.

  • Which is the best airline for flights from Chicago to Reykjavik, United Airlines or Icelandair?

    The two airlines most popular with KAYAK users for flights from Chicago to Reykjavik are United Airlines and Icelandair. With an average price for the route of $823 and an overall rating of 7.4, United Airlines is the most popular choice. Icelandair is also a great choice for the route, with an average price of $673 and an overall rating of 7.0.

  • How does KAYAK find such low prices on flights from Chicago to Reykjavik?

    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 Chicago to Reykjavik.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from Chicago 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 Chicago to Reykjavik?

    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 Reykjavik with an airline and back to Chicago with another airline.

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

    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 Reykjavik from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago to Reykjavik Keflavik Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $308 or less one-way and $692 or less round-trip.

Prefer to fly direct from Chicago to Reykjavik?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago to Reykjavik Keflavik Intl.
Find which airlines fly direct from Chicago to Reykjavik Keflavik Intl Airport, which days they fly and book direct flights.

Direct departures

Chicago to Reykjavik Keflavik Intl

Monday

Icelandair,United Airlines

Icelandair,United Airlines

Tuesday

Icelandair,United Airlines

Icelandair,United Airlines

Wednesday

Icelandair,United Airlines

Icelandair,United Airlines

Thursday

Icelandair,United Airlines

Icelandair,United Airlines

Friday

Icelandair,United Airlines

Icelandair,United Airlines

Saturday

Icelandair,United Airlines

Icelandair,United Airlines

Sunday

Icelandair,United Airlines

Icelandair,United Airlines

See more direct flights

Direct returns

Reykjavik Keflavik Intl to Chicago

Monday

Icelandair,United Airlines

Icelandair,United Airlines

Tuesday

Icelandair,United Airlines

Icelandair,United Airlines

Wednesday

Icelandair,United Airlines

Icelandair,United Airlines

Thursday

Icelandair,United Airlines

Icelandair,United Airlines

Friday

Icelandair,United Airlines

Icelandair,United Airlines

Saturday

Icelandair,United Airlines

Icelandair,United Airlines

Sunday

Icelandair,United Airlines

Icelandair,United Airlines

See more direct flights

Reviews of the top airlines flying from Chicago to Keflavik Intl

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Reykjavik. 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 Chicago to Keflavik Intl? 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 9927 reviews
6.7Food
7.1Entertainment
7.3Comfort
8.1Crew
7.7Boarding
Airline reviews

The flight was delayed by a hour and I wish they had communicated it sooner. No issues on the plane, it did take a while for food to come.

6.0 GoodMatthew, Jul 2026
ORD - SEA
Read more United Airlines reviews

The flight was delayed by a hour and I wish they had communicated it sooner. No issues on the plane, it did take a while for food to come.

Know that the movies that you are going to be offered are the oldest be rated movies they could possibly get. They may have one or two new movies that they keep advertising but when you’re flying 15 hours, there is nothing to see past the first new movie.

Agents at gate were not immediately available to solve problems and once they did they didn’t fix all the fight connections

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

Smooth travel. Immediate update prior flight delay so I can arrange myself properly without too rush.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

United cancelled the flight after a 2 hour delay. The only choice was a 24 hour delay which was then 3 hours delayed.

Crew was very friendly. Need lay flat beds! More snacks

Good. Rxception is the Entertainment - movies and TV shows all out of date…

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

They cancelled our connecting flight resulting in another layover reaching our final destination 8 hours later than scheduled.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Great crew, bumpy landings, two-hour wait for baggage with no communication or explanation. Will not fly again!

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

Everything you need to know for your flight from Chicago to Keflavik Intl

Information on your arrival and departure airports

Keflavik Intl (KEF)