What airlines fly to Reykjavik Keflavik Intl Airport?

Icelandair, Alaska Airlines and United Airlines are the top three most popular airlines that fly to Reykjavik Keflavik Intl Airport from Ontario according to our data. Icelandair is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Reykjavik Keflavik Intl Airport. Keep in mind that there are 8 different airlines that fly to Reykjavik Keflavik Intl Airport on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Reykjavik Keflavik Intl?

United Airlines is the most popular carrier operating from Ontario to Reykjavik Keflavik Intl

When did momondo last update prices for flights from Ontario Airport to Reykjavik Keflavik Intl Airport?

Prices for flights from Ontario Airport to Reykjavik Keflavik Intl Airport were last updated today.

How many operators does momondo search for flights from Ontario Airport to Reykjavik Keflavik Intl Airport?

As of October 2026, there is 1 operator available to choose from for flights from Ontario Airport to Reykjavik Keflavik Intl Airport.

How old do you have to be to fly from Ontario Airport to Reykjavik Keflavik Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Reykjavik Keflavik Intl Airport.

What documentation or ID do you need to fly to Reykjavik Keflavik Intl Airport?

The travel and health documents required for your trip to Reykjavik Keflavik Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Reykjavik Keflavik Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$376 Cheap Flights from Ontario to Reykjavik Keflavik Intl Airport in 2026/27

Find the cheapest flights from Ontario to Reykjavik

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 am - 6:05 amONT Ontario-KEF Reykjavik Keflavik Intl

15h 35m1 stop Denver Intl

4:55 pm - 12:05 amKEF Reykjavik Keflavik Intl-ONT Ontario

15h 10m1 stop Denver Intl

$690Multiple Airlines

Sat, Jan 16 - Sat, Jan 23

6:30 am - 6:05 amONT Ontario-KEF Reykjavik Keflavik Intl

15h 35m1 stop Denver Intl

4:55 pm - 12:05 amKEF Reykjavik Keflavik Intl-ONT Ontario

15h 10m1 stop Denver Intl

$698Multiple Airlines

Sat, Jan 30 - Sat, Feb 6

6:00 am - 6:05 amONT Ontario-KEF Reykjavik Keflavik Intl

16h 05m1 stop Denver Intl

4:55 pm - 10:17 pmKEF Reykjavik Keflavik Intl-ONT Ontario

13h 22m1 stop Denver Intl

$713Multiple Airlines

Sat, Dec 5 - Wed, Dec 9

2:00 pm - 6:05 amONT Ontario-KEF Reykjavik Keflavik Intl

32h 05m2 stops Las Vegas Harry Reid Intl Denver Intl

4:55 pm - 10:17 pmKEF Reykjavik Keflavik Intl-ONT Ontario

13h 22m1 stop Denver Intl

$725Multiple Airlines

Tue, Dec 1 - Tue, Dec 8

6:00 am - 6:05 amONT Ontario-KEF Reykjavik Keflavik Intl

16h 05m1 stop Denver Intl

4:55 pm - 11:23 pmKEF Reykjavik Keflavik Intl-ONT Ontario

38h 28m2 stops Denver Intl San Francisco

$745Multiple Airlines

Sat, Dec 5 - Wed, Dec 9

6:30 am - 6:05 amONT Ontario-KEF Reykjavik Keflavik Intl

15h 35m1 stop Denver Intl

4:55 pm - 7:07 amKEF Reykjavik Keflavik Intl-ONT Ontario

22h 12m2 stops Denver Intl Las Vegas Harry Reid Intl

$752Multiple Airlines

Sat, Jan 16 - Sat, Jan 23

6:30 am - 6:05 amONT Ontario-KEF Reykjavik Keflavik Intl

15h 35m1 stop Denver Intl

4:55 pm - 7:07 amKEF Reykjavik Keflavik Intl-ONT Ontario

22h 12m2 stops Denver Intl Las Vegas Harry Reid Intl

$762Multiple Airlines

Sat, Jan 30 - Sat, Feb 6

10:34 am - 5:15 pmONT Ontario-KEF Reykjavik Keflavik Intl

22h 41m2 stops Dallas/Fort Worth Helsinki-Vantaa

10:00 am - 10:31 pmKEF Reykjavik Keflavik Intl-ONT Ontario

44h 31m2 stops Helsinki-Vantaa Dallas/Fort Worth

$763Multiple Airlines

Mon, Feb 22 - Mon, Mar 1

6:00 am - 9:25 amONT Ontario-KEF Reykjavik Keflavik Intl

20h 25m1 stop Seattle/Tacoma Intl

4:50 pm - 10:39 pmKEF Reykjavik Keflavik Intl-ONT Ontario

12h 49m1 stop Seattle/Tacoma Intl

$1,035Alaska Airlines

Mon, Apr 26 - Thu, May 6

8:59 pm - 6:15 amONT Ontario-KEF Reykjavik Keflavik Intl

25h 16m1 stop Seattle/Tacoma Intl

4:50 pm - 10:00 amKEF Reykjavik Keflavik Intl-ONT Ontario

25h 10m1 stop Portland

$1,044Alaska Airlines

Wed, Dec 23 - Sun, Jan 10

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United Airlines flights from Ontario to Reykjavik Keflavik Intl Airport

Our best United Airlines deals on Ontario to Reykjavik Keflavik Intl Airport flight tickets

United Airlines

Dec 2

ONT7:00 amOntario

19h 00m

1 stop

KEF10:00 amReykjavik Keflavik Intl

Dec 17

KEF12:00 pmReykjavik Keflavik Intl

18h 31m

1 stop

ONT10:31 pmOntario

$773

United Airlines

Dec 2

ONT11:20 amOntario

14h 40m

2 stops

KEF10:00 amReykjavik Keflavik Intl

Dec 17

KEF12:00 pmReykjavik Keflavik Intl

17h 00m

2 stops

ONT9:00 pmOntario

$778

United Airlines

Dec 10

ONT6:40 pmOntario

31h 20m

2 stops

KEF10:00 amReykjavik Keflavik Intl

Dec 17

KEF12:00 pmReykjavik Keflavik Intl

17h 00m

2 stops

ONT9:00 pmOntario

$841

Alaska Airlines flights from Ontario to Reykjavik Keflavik Intl Airport

Our best Alaska Airlines deals on Ontario to Reykjavik Keflavik Intl Airport flight tickets

Alaska Airlines

Nov 9

ONT5:59 pmOntario

28h 16m

1 stop

KEF6:15 amReykjavik Keflavik Intl

Nov 19

KEF5:00 pmReykjavik Keflavik Intl

14h 06m

1 stop

ONT11:06 pmOntario

$1,220

Alaska Airlines

Nov 6

ONT5:59 pmOntario

28h 16m

1 stop

KEF6:15 amReykjavik Keflavik Intl

Nov 13

KEF4:50 pmReykjavik Keflavik Intl

25h 02m

1 stop

ONT9:52 amOntario

$1,259

Alaska Airlines

Nov 13

ONT6:00 amOntario

16h 15m

1 stop

KEF6:15 amReykjavik Keflavik Intl

Nov 19

KEF5:00 pmReykjavik Keflavik Intl

30h 31m

2 stops

ONT3:31 pmOntario

$1,275

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Sat 1/16

6:30 am-6:05 am

1 stop15h 35m

Reykjavik Keflavik Intl

Sat 1/23

4:55 pm-12:05 am

1 stop15h 10m

$690

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Sat 1/30

6:30 am-6:05 am

1 stop15h 35m

Reykjavik Keflavik Intl

Sat 2/6

4:55 pm-12:05 am

1 stop15h 10m

$698

Quickest round-trip

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Sat 12/5

6:00 am-6:05 am

1 stop16h 05m

Reykjavik Keflavik Intl

Wed 12/9

4:55 pm-10:17 pm

1 stop13h 22m

$713

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Tue 12/1

2:00 pm-6:05 am

2 stops32h 05m

Reykjavik Keflavik Intl

Tue 12/8

4:55 pm-10:17 pm

1 stop13h 22m

$725

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Sat 12/5

6:00 am-6:05 am

1 stop16h 05m

Reykjavik Keflavik Intl

Wed 12/9

4:55 pm-11:23 pm

2 stops38h 28m

$745

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Sat 1/16

6:30 am-6:05 am

1 stop15h 35m

Reykjavik Keflavik Intl

Sat 1/23

4:55 pm-7:07 am

2 stops22h 12m

$752

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Sat 1/30

6:30 am-6:05 am

1 stop15h 35m

Reykjavik Keflavik Intl

Sat 2/6

4:55 pm-7:07 am

2 stops22h 12m

$762

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Mon 2/22

10:34 am-5:15 pm

2 stops22h 41m

Reykjavik Keflavik Intl

Mon 3/1

10:00 am-10:31 pm

2 stops44h 31m

$763

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Mon 4/26

6:00 am-9:25 am

1 stop20h 25m

Reykjavik Keflavik Intl

Thu 5/6

4:50 pm-10:39 pm

1 stop12h 49m

$1,035

OntarioReykjavik

ONT Ontario - KEF Reykjavik Keflavik Intl

ONTKEF

Ontario

Wed 12/23

8:59 pm-6:15 am

1 stop25h 16m

Reykjavik Keflavik Intl

Sun 1/10

4:50 pm-10:00 am

1 stop25h 10m

$1,044

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Reykjavik Keflavik Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Ontario to Reykjavik Keflavik Intl Airport flights?

You could potentially save up to 34% on your flight if you consider stops on a Ontario to Reykjavik Keflavik Intl Airport flight.

When to book flights from Ontario to Reykjavik Keflavik Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Reykjavik Keflavik Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Reykjavik Keflavik Intl Airport (ONT to KEF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Reykjavik Keflavik Intl Airport

Best Price Found	$376
Fastest flight time	10h 55m
Direct flights	None

The best one-way flight to Reykjavik Keflavik Intl Airport from Ontario in the past 72 hours is $376. The best round-trip flight deal from Ontario to Reykjavik Keflavik Intl Airport found on momondo in the last 72 hours is $690.

The fastest flight from Ontario to Reykjavik Keflavik Intl Airport takes 10h 55m

There are no direct flights from Ontario to Reykjavik Keflavik Intl Airport. There are no popular flight routes from Ontario to Reykjavik Keflavik Intl Airport.

Search flight deals

Frequently asked questions about flying from Ontario to Reykjavik Keflavik Intl Airport

How far is Ontario to Reykjavik Keflavik Intl by plane?
A flight from Ontario to Reykjavik Keflavik Intl will travel around 4272.1 mi. Typically, this will take 10h 55m by plane in normal conditions.
When did momondo last update prices for flights from Ontario Airport to Reykjavik Keflavik Intl Airport?
Prices for flights from Ontario Airport to Reykjavik Keflavik Intl Airport were last updated today.
How many operators does momondo search for flights from Ontario Airport to Reykjavik Keflavik Intl Airport?
As of October 2026, there is 1 operator available to choose from for flights from Ontario Airport to Reykjavik Keflavik Intl Airport.
How old do you have to be to fly from Ontario Airport to Reykjavik Keflavik Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Reykjavik Keflavik Intl Airport.
What documentation or ID do you need to fly to Reykjavik Keflavik Intl Airport?
The travel and health documents required for your trip to Reykjavik Keflavik Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Reykjavik Keflavik Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Ontario to Reykjavik Keflavik Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ontario to Reykjavik Keflavik Intl Airport is Alaska Airlines (100% of total bookings).

Best airlines flying from Ontario to Reykjavik Keflavik Intl Airport

Compare and see reviews for airlines that fly from Ontario to Reykjavik Keflavik Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $645	Free Cancellation	Rating 7.9 13,135 reviews		Search Alaska Airlines flights

Selfoss

Keflavik

Hella

Hveragerdi

Borgarnes

Grindavik

Kopavogur

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Reykjavik?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Reykjavik for you.

Can I find flights from Ontario to Reykjavik with flexible booking policies on momondo?

Flights from Ontario to Reykjavik with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Reykjavik?

Once you have performed a search for Ontario to Reykjavik flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Reykjavik right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Reykjavik flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Ontario to Reykjavik from $376

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Reykjavik departing on 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Ontario to Reykjavik Keflavik Intl Airport

Our best United Airlines deals on Ontario to Reykjavik Keflavik Intl Airport flight tickets

Alaska Airlines flights from Ontario to Reykjavik Keflavik Intl Airport

Our best Alaska Airlines deals on Ontario to Reykjavik Keflavik Intl Airport flight tickets

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Use the filters below to find and compare flights from Ontario to Reykjavik Keflavik Intl Airport that are best for you.

See travel insights to Reykjavik from

How to get the cheapest flight ticket from Ontario to Reykjavik Keflavik Intl Airport

Can stopping save me money on Ontario to Reykjavik Keflavik Intl Airport flights?

What is the cheapest airline that flies from Ontario to Reykjavik Keflavik Intl?

What airlines fly to Reykjavik Keflavik Intl Airport?

When to book flights from Ontario to Reykjavik Keflavik Intl Airport

Cheap Ontario to Reykjavik Keflavik Intl Airport (ONT to KEF) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Ontario to Reykjavik Keflavik Intl Airport

Best airlines flying from Ontario to Reykjavik Keflavik Intl Airport

Compare and see reviews for airlines that fly from Ontario to Reykjavik Keflavik Intl Airport with momondo

Traveling to a place near Reykjavik?

Why use momondo?

An easier way to manage your Reykjavik Keflavik Intl Airport trip

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Ontario flight routes

According to popular flight searches on momondo this year

Reykjavik Keflavik Intl Airport flight routes

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List of cabin classes available on flights landing in Reykjavik. Availability may vary depending on flight origin and airline.

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