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Estonia

$554+ Cheap flights from Ontario (ONT) to Estonia

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — TLL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Ontario to Estonia

Keep the following information in mind while searching for Ontario to Estonia flight deals. Data was last updated September 11, 2025.

Round-trip from

$554
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$607
From Ontario to Estonia
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Ontario to Estonia

Cheapest flights from Ontario to Estonia
Explore the most affordable flight options available from Ontario to Estonia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/275:05 amONT - TLL
2 stops27h 05mUnited Airlines
Sat 11/16:15 amTLL - ONT
2 stops23h 29mUnited Airlines
Deal found 9/9$627
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:57 amONT - TLL
2 stops19h 18mAmerican Airlines
Sun 11/96:00 amTLL - ONT
2 stops26h 15mAmerican Airlines
Deal found 9/10$684
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:36 pmONT - TLL
2 stops43h 44mUnited Airlines
Sun 10/122:25 pmTLL - ONT
2 stops31h 48mUnited Airlines
Deal found 9/11$879
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:00 amONT - TLL
2 stops22h 15mMultiple Airlines
Fri 12/128:25 amTLL - ONT
2 stops19h 52mMultiple Airlines
Deal found 9/11$887
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/67:02 amONT - TLL
2 stops31h 18mUnited Airlines
Sun 10/122:25 pmTLL - ONT
2 stops31h 48mUnited Airlines
Deal found 9/11$896
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/67:02 amONT - TLL
2 stops31h 18mUnited Airlines
Mon 10/136:00 amTLL - ONT
2 stops26h 30mUnited Airlines
Deal found 9/9$898
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:00 amONT - TLL
2 stops32h 20mUnited Airlines
Tue 9/162:35 pmTLL - ONT
2 stops39h 58mUnited Airlines
Deal found 9/10$1,084
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:00 amONT - TLL
2 stops21h 55mUnited Airlines
Fri 10/102:30 pmTLL - ONT
2 stops31h 43mUnited Airlines
Deal found 9/11$1,093
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/135:10 amONT - TLL
2 stops27h 05mUnited Airlines
Mon 9/152:30 pmTLL - ONT
2 stops40h 03mUnited Airlines
Deal found 9/10$1,235
This United deal was found by Cheapflights users on 9/10. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:00 amONT - TLL
2 stops20h 55mMultiple Airlines
Tue 11/116:15 amTLL - ONT
2 stops21h 19mMultiple Airlines
Deal found 9/10$1,386

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Estonia 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 September 11, 2025.
Use the filters below to find and compare flights from Ontario to Estonia that are best for you.

Fly from

Ontario

Fly to

Estonia

Route

Depart

Return

Price

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Wed 3/4

5:40 am-11:50 pm

2 stops32h 10m

Tallinn

Sun 3/8

1:55 pm-6:00 pm

2 stops37h 05m

$554

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Mon 10/27

5:05 am-5:10 pm

2 stops27h 05m

Tallinn

Sat 11/1

6:15 am-8:44 pm

2 stops23h 29m

$627

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Mon 10/27

10:57 am-3:15 pm

2 stops19h 18m

Tallinn

Sun 11/9

6:00 am-10:15 pm

2 stops26h 15m

$684

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Tue 10/7

6:36 pm-12:20 am

2 stops43h 44m

Tallinn

Sun 10/12

2:25 pm-12:13 pm

2 stops31h 48m

$879

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Tue 12/2

7:00 am-3:15 pm

2 stops22h 15m

Tallinn

Fri 12/12

8:25 am-6:17 pm

2 stops19h 52m

$887

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Mon 10/6

7:02 am-12:20 am

2 stops31h 18m

Tallinn

Mon 10/13

6:00 am-10:30 pm

2 stops26h 30m

$898

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Tue 10/7

6:00 am-1:55 pm

2 stops21h 55m

Tallinn

Fri 10/10

2:30 pm-12:13 pm

2 stops31h 43m

$1,093

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Sun 10/26

7:00 am-12:55 pm

2 stops20h 55m

Tallinn

Tue 11/11

6:15 am-5:34 pm

2 stops21h 19m

$1,386

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Mon 10/6

8:15 am-4:10 pm

2 stops21h 55m

Tallinn

Sat 10/11

4:05 pm-7:02 pm

2 stops36h 57m

$2,391

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Best time to book a flight from Ontario to Estonia

Have a flexible travel schedule? Discover the best time to fly to Estonia from Ontario 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 Ontario to Estonia

What is the cheapest month to book a flight from Ontario to Estonia?

Currently, November is the cheapest month in which you can book a flight from Ontario to Estonia (average of $550). Flying from Ontario to Estonia in June is currently the most expensive (average of $974). 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.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Estonia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Estonia?

    If you book a flight to Estonia from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Estonia?

    United Airlines and American Airlines can get you from Ontario to Estonia in just under 19h 18m. Your travel time can differ by up to 12h 52m. The distance between Ontario and Estonia is about 5626 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Ontario to Estonia that include hotel bookings?

    Yes. In addition to deals on Ontario to Estonia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Estonia?

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

  • Can I find deals for business class flights from Ontario to Estonia?

    Yes. Cheapflights offers flight deals from Ontario to Estonia 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 Ontario to Estonia?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Estonia (average of $550). Flying from Ontario to Estonia in June is currently the most expensive (average of $974). 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

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