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Cheap flights from Ontario to Reykjavik from $566

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 2/1. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:00 am - 6:15 amONT-KEF
16h 15m2 stops
Multiple Airlines Logo
4:50 pm - 12:46 pmKEF-ONT
27h 56m1 stop
$741Multiple Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Multiple Airlines Logo
6:00 am - 6:15 amONT-KEF
16h 15m2 stops
Multiple Airlines Logo
4:50 pm - 12:46 pmKEF-ONT
27h 56m1 stop
$762Multiple Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
British Airways Logo
5:02 pm - 9:40 amONT-KEF
33h 38m2 stops
British Airways Logo
8:35 am - 5:45 pmKEF-ONT
40h 10m2 stops
$795British Airways
Find Deal
Wed, Apr 8 - Thu, Apr 16
American Airlines Logo
11:59 pm - 10:50 amONT-KEF
50h 51m2 stops
American Airlines Logo
11:50 am - 10:28 pmKEF-ONT
42h 38m2 stops
$810American Airlines
Find Deal
Sun, Nov 30 - Tue, Dec 9
Multiple Airlines Logo
6:00 am - 6:15 amONT-KEF
16h 15m1 stop
Multiple Airlines Logo
5:00 pm - 11:29 pmKEF-ONT
14h 29m1 stop
$820Multiple Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
American Airlines Logo
6:10 am - 10:50 amONT-KEF
44h 40m2 stops
American Airlines Logo
11:50 am - 10:28 pmKEF-ONT
42h 38m2 stops
$828American Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
Alaska Airlines Logo
6:00 am - 6:15 amONT-KEF
16h 15m1 stop
Alaska Airlines Logo
5:00 pm - 11:29 pmKEF-ONT
14h 29m1 stop
$944Alaska Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Alaska Airlines Logo
6:00 am - 6:15 amONT-KEF
16h 15m1 stop
Alaska Airlines Logo
4:50 pm - 11:19 amKEF-ONT
26h 29m2 stops
$1,002Alaska Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
British Airways Logo
11:59 pm - 10:00 amONT-KEF
27h 01m2 stops
British Airways Logo
8:35 am - 11:40 pmKEF-ONT
22h 05m2 stops
$1,188British Airways
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Mon, Apr 6 - Mon, Apr 13
Delta Logo
6:00 pm - 9:30 amONT-KEF
32h 30m2 stops
Delta Logo
11:25 am - 11:14 amKEF-ONT
30h 49m2 stops
$1,279Delta
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Sat, Mar 28 - Sat, Apr 4

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
Dec 8
ONT6:00 amOntario
16h 15m
1 stop
KEF6:15 amReykjavik Keflavik Intl
Dec 15
KEF5:00 pmReykjavik Keflavik Intl
14h 29m
1 stop
ONT11:29 pmOntario
$944
Find similar
Alaska Airlines
Dec 8
ONT6:00 amOntario
16h 15m
1 stop
KEF6:15 amReykjavik Keflavik Intl
Dec 15
KEF4:50 pmReykjavik Keflavik Intl
26h 29m
2 stops
ONT11:19 amOntario
$1,002
Find similar
Alaska Airlines
Apr 8
ONT11:00 amOntario
15h 25m
2 stops
KEF9:25 amReykjavik Keflavik Intl
Apr 16
KEF4:50 pmReykjavik Keflavik Intl
12h 48m
1 stop
ONT10:38 pmOntario
$1,057
Find similar

British Airways flights from Ontario to Reykjavik Keflavik Intl Airport

Our best British Airways deals on Ontario to Reykjavik Keflavik Intl Airport flight tickets
British Airways
Apr 8
ONT5:02 pmOntario
33h 38m
2 stops
KEF9:40 amReykjavik Keflavik Intl
Apr 16
KEF8:35 amReykjavik Keflavik Intl
40h 10m
2 stops
ONT5:45 pmOntario
$795
Find similar
British Airways
Apr 6
ONT11:59 pmOntario
27h 01m
2 stops
KEF10:00 amReykjavik Keflavik Intl
Apr 13
KEF8:35 amReykjavik Keflavik Intl
22h 05m
2 stops
ONT11:40 pmOntario
$1,188
Find similar
British Airways
Mar 27
ONT3:09 pmOntario
59h 36m
2 stops
KEF9:45 amReykjavik Keflavik Intl
Apr 8
KEF10:55 amReykjavik Keflavik Intl
42h 01m
2 stops
ONT9:56 pmOntario
$1,207
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Reykjavik Keflavik Intl Airport 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, momondo users made 832,500 searches. Data last updated November 4, 2025.
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

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Mon 12/8

6:00 am-6:15 am

2 stops16h 15m

Reykjavik Keflavik Intl

Mon 12/15

4:50 pm-12:46 pm

1 stop27h 56m

$741

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Mon 12/8

6:00 am-6:15 am

2 stops16h 15m

Reykjavik Keflavik Intl

Mon 12/15

4:50 pm-12:46 pm

1 stop27h 56m

$762

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Wed 4/8

5:02 pm-9:40 am

2 stops33h 38m

Reykjavik Keflavik Intl

Thu 4/16

8:35 am-5:45 pm

2 stops40h 10m

$795

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Sun 11/30

11:59 pm-10:50 am

2 stops50h 51m

Reykjavik Keflavik Intl

Tue 12/9

11:50 am-10:28 pm

2 stops42h 38m

$810

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Mon 12/8

6:00 am-6:15 am

1 stop16h 15m

Reykjavik Keflavik Intl

Mon 12/15

5:00 pm-11:29 pm

1 stop14h 29m

$820

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Mon 12/1

6:10 am-10:50 am

2 stops44h 40m

Reykjavik Keflavik Intl

Mon 12/8

11:50 am-10:28 pm

2 stops42h 38m

$828

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Mon 12/8

6:00 am-6:15 am

1 stop16h 15m

Reykjavik Keflavik Intl

Mon 12/15

5:00 pm-11:29 pm

1 stop14h 29m

$944

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Mon 12/8

6:00 am-6:15 am

1 stop16h 15m

Reykjavik Keflavik Intl

Mon 12/15

4:50 pm-11:19 am

2 stops26h 29m

$1,002

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Mon 4/6

11:59 pm-10:00 am

2 stops27h 01m

Reykjavik Keflavik Intl

Mon 4/13

8:35 am-11:40 pm

2 stops22h 05m

$1,188

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Sat 3/28

6:00 pm-9:30 am

2 stops32h 30m

Reykjavik Keflavik Intl

Sat 4/4

11:25 am-11:14 am

2 stops30h 49m

$1,279

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Reykjavik from

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

What is the cheapest day to depart on your flight to Reykjavik Keflavik Intl Airport?

The cheapest day to depart from Ontario to Reykjavik Keflavik Intl Airport is on a Tuesday when prices can be found for as low as $818. The most expensive day to fly to Reykjavik Keflavik Intl Airport is Friday, with ticket prices averaging around $1,000.

What is the cheapest time of day to depart on your flight to Reykjavik Keflavik Intl Airport?

The cheapest time of day to fly to Reykjavik Keflavik Intl Airport is at noon when flights can be purchased for as low as $872. Flights in the afternoon are often more expensive with an average ticket price of $974.

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

You could potentially save up to 30% 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

Direct flights

None
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

  • 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 11h 00m 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 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.

Traveling to a place near Reykjavik?

Book flights to Reykjavik if you plan to visit one of these locations
Keflavik
Selfoss
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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