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Cheap flights from Ontario to Copenhagen from $403

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 Copenhagen departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Copenhagen

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
3:09 pm - 5:20 pmONT  Ontario-CPH Kastrup Copenhagen
17h 11m2 stops Dallas/Fort Worth London Heathrow
British Airways Logo
8:55 am - 6:40 pmCPH  Kastrup Copenhagen-ONT Ontario
18h 45m2 stops Helsinki-Vantaa Dallas/Fort Worth
$768British Airways
Wed, Feb 3 - Wed, Feb 17
United Airlines Logo
7:00 am - 11:25 amONT  Ontario-CPH Kastrup Copenhagen
19h 25m2 stops Chicago O'Hare Intl Brussels Bruxelles-National
United Airlines Logo
10:05 am - 8:15 pmCPH  Kastrup Copenhagen-ONT Ontario
19h 10m2 stops Frankfurt am Main San Francisco
$775United Airlines
Sun, Nov 8 - Tue, Nov 17
United Airlines Logo
6:00 am - 10:20 amONT  Ontario-CPH Kastrup Copenhagen
19h 20m2 stops San Francisco Toronto Pearson Intl
United Airlines Logo
6:55 am - 6:44 pmCPH  Kastrup Copenhagen-ONT Ontario
20h 49m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$776United Airlines
Tue, Dec 8 - Tue, Dec 22
United Airlines Logo
6:00 am - 10:20 amONT  Ontario-CPH Kastrup Copenhagen
19h 20m2 stops San Francisco Toronto Pearson Intl
United Airlines Logo
6:55 am - 6:44 pmCPH  Kastrup Copenhagen-ONT Ontario
20h 49m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$777United Airlines
Tue, Dec 8 - Tue, Dec 22
United Airlines Logo
5:00 am - 10:20 amONT  Ontario-CPH Kastrup Copenhagen
20h 20m2 stops Denver Intl Toronto Pearson Intl
United Airlines Logo
11:35 am - 6:44 pmCPH  Kastrup Copenhagen-ONT Ontario
40h 09m2 stops Toronto Pearson Intl Chicago O'Hare Intl
$778United Airlines
Fri, Jan 8 - Fri, Jan 22
Delta Logo
10:00 pm - 6:45 amONT  Ontario-CPH Kastrup Copenhagen
23h 45m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
9:00 am - 11:05 amCPH  Kastrup Copenhagen-ONT Ontario
35h 05m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
$796Delta
Sun, Sep 13 - Mon, Sep 21
United Airlines Logo
7:00 am - 11:25 amONT  Ontario-CPH Kastrup Copenhagen
19h 25m2 stops Chicago O'Hare Intl Brussels Bruxelles-National
United Airlines Logo
7:15 am - 8:15 pmCPH  Kastrup Copenhagen-ONT Ontario
22h 00m2 stops Frankfurt am Main San Francisco
$798United Airlines
Sun, Nov 8 - Sun, Nov 22
United Airlines Logo
6:00 am - 10:20 amONT  Ontario-CPH Kastrup Copenhagen
19h 20m2 stops San Francisco Toronto Pearson Intl
United Airlines Logo
6:55 am - 6:44 pmCPH  Kastrup Copenhagen-ONT Ontario
20h 49m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$800United Airlines
Thu, Dec 10 - Thu, Dec 24
United Airlines Logo
4:17 pm - 6:25 pmONT  Ontario-CPH Kastrup Copenhagen
17h 08m2 stops San Francisco Frankfurt am Main
United Airlines Logo
10:05 am - 8:15 pmCPH  Kastrup Copenhagen-ONT Ontario
19h 10m2 stops Frankfurt am Main San Francisco
$809United Airlines
Sun, Nov 8 - Sun, Nov 15
Delta Logo
12:17 pm - 9:35 pmONT  Ontario-CPH Kastrup Copenhagen
24h 18m2 stops Atlanta Hartsfield-Jackson London Heathrow
Delta Logo
9:00 am - 11:05 amCPH  Kastrup Copenhagen-ONT Ontario
35h 05m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
$815Delta
Tue, Sep 15 - Mon, Sep 21

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British Airways flights from Ontario to Copenhagen

Our best British Airways deals on Ontario to Copenhagen flight tickets
British Airways
Feb 3
ONT3:09 pmOntario
17h 11m
2 stops
CPH5:20 pmKastrup Copenhagen
Feb 17
CPH8:55 amKastrup Copenhagen
18h 45m
2 stops
ONT6:40 pmOntario
$768
British Airways
Nov 3
ONT2:22 pmOntario
17h 33m
2 stops
CPH4:55 pmKastrup Copenhagen
Dec 3
CPH8:55 amKastrup Copenhagen
18h 23m
2 stops
ONT6:18 pmOntario
$875
British Airways
Nov 5
ONT2:22 pmOntario
17h 58m
2 stops
CPH5:20 pmKastrup Copenhagen
Nov 19
CPH8:55 amKastrup Copenhagen
19h 02m
2 stops
ONT6:57 pmOntario
$914

United Airlines flights from Ontario to Copenhagen

Our best United Airlines deals on Ontario to Copenhagen flight tickets
United Airlines
Nov 8
ONT7:00 amOntario
19h 25m
2 stops
CPH11:25 amKastrup Copenhagen
Nov 17
CPH10:05 amKastrup Copenhagen
19h 10m
2 stops
ONT8:15 pmOntario
$775
United Airlines
Dec 8
ONT6:00 amOntario
19h 20m
2 stops
CPH10:20 amKastrup Copenhagen
Dec 22
CPH6:55 amKastrup Copenhagen
20h 49m
2 stops
ONT6:44 pmOntario
$776
United Airlines
Dec 8
ONT6:00 amOntario
19h 20m
2 stops
CPH10:20 amKastrup Copenhagen
Dec 22
CPH6:55 amKastrup Copenhagen
20h 49m
2 stops
ONT6:44 pmOntario
$777

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Copenhagen 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 August 11, 2026.
Use the filters below to find and compare flights from Ontario to Copenhagen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Wed 2/3

3:09 pm-5:20 pm

2 stops17h 11m

Kastrup Copenhagen

Wed 2/17

8:55 am-6:40 pm

2 stops18h 45m

$768

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Sun 11/8

7:00 am-11:25 am

2 stops19h 25m

Kastrup Copenhagen

Tue 11/17

10:05 am-8:15 pm

2 stops19h 10m

$775

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Tue 12/8

6:00 am-10:20 am

2 stops19h 20m

Kastrup Copenhagen

Tue 12/22

6:55 am-6:44 pm

2 stops20h 49m

$776

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Tue 12/8

6:00 am-10:20 am

2 stops19h 20m

Kastrup Copenhagen

Tue 12/22

6:55 am-6:44 pm

2 stops20h 49m

$777

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Fri 1/8

5:00 am-10:20 am

2 stops20h 20m

Kastrup Copenhagen

Fri 1/22

11:35 am-6:44 pm

2 stops40h 09m

$778

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Sun 9/13

10:00 pm-6:45 am

2 stops23h 45m

Kastrup Copenhagen

Mon 9/21

9:00 am-11:05 am

2 stops35h 05m

$796

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Sun 11/8

7:00 am-11:25 am

2 stops19h 25m

Kastrup Copenhagen

Sun 11/22

7:15 am-8:15 pm

2 stops22h 00m

$798

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Thu 12/10

6:00 am-10:20 am

2 stops19h 20m

Kastrup Copenhagen

Thu 12/24

6:55 am-6:44 pm

2 stops20h 49m

$800

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Sun 11/8

4:17 pm-6:25 pm

2 stops17h 08m

Kastrup Copenhagen

Sun 11/15

10:05 am-8:15 pm

2 stops19h 10m

$809

OntarioCopenhagen

ONT Ontario - CPH Kastrup Copenhagen

ONTCPH

Ontario

Tue 9/15

12:17 pm-9:35 pm

2 stops24h 18m

Kastrup Copenhagen

Mon 9/21

9:00 am-11:05 am

2 stops35h 05m

$815

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 Copenhagen from

How to get the cheapest flight ticket from Ontario to Copenhagen

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 Copenhagen?

The cheapest day to depart from Ontario to Copenhagen is on a Tuesday when prices can be found for as low as $748. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Copenhagen for around $834.

What is the cheapest time of day to depart on your flight to Copenhagen?

Flying to Copenhagen from Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $772 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $842. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from Ontario to Copenhagen

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Copenhagen according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Copenhagen (ONT to CPH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Copenhagen

Fastest flight time

16h 42m

Direct flights

None
The fastest flight from Ontario to Copenhagen takes 16h 42m
There are no direct flights from Ontario to Copenhagen. There are no popular flight routes from Ontario to Copenhagen.
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Frequently asked questions about flying from Ontario to Copenhagen

  • How far is Ontario to Kastrup Copenhagen by plane?

    The distance between Ontario and Kastrup Copenhagen is about 5574.9 mi. 16h 42m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ontario Airport to Kastrup Copenhagen Airport?

    Prices for flights from Ontario Airport to Kastrup Copenhagen Airport were last updated today.

  • How old do you have to be to fly from Ontario Airport to Kastrup Copenhagen Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Kastrup Copenhagen Airport.

  • What documentation or ID do you need to fly to Kastrup Copenhagen Airport?

    The travel and health documents required for your trip to Kastrup Copenhagen 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 Kastrup Copenhagen Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
Kastrup
Roskilde

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Copenhagen. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Copenhagen from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Ontario and Copenhagen by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Ontario to Copenhagen now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Copenhagen and let you know when they change.

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