HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Estonia

$423+ Cheap flights from Ontario (ONT) to Estonia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — TLL
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Estonia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 18, 2025.

Round-trip from

$544
(United Airlines)

One-way from

$423
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$1,002
From Ontario to Estonia
Search Deals
One-way flight from Ontario to Estonia
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($183 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 18, 2025.

This United Airlines deal was found by Cheapflights users on 6/16. 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.
Wed 9/36:00 amONT - TLL
2 stops21h 55mUnited Airlines
Thu 9/256:00 amTLL - ONT
2 stops26h 30mUnited Airlines
Deal found 6/16$544
This United deal was found by Cheapflights users on 6/18. 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.
Mon 8/117:00 amONT - TLL
2 stops31h 20mMultiple Airlines
Tue 8/266:00 amTLL - ONT
2 stops21h 37mMultiple Airlines
Deal found 6/18$704
This British Airways deal was found by Cheapflights users on 6/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/254:50 pmONT - TLL
2 stops20h 45mBritish Airways
Thu 7/36:00 amTLL - ONT
2 stops27h 59mBritish Airways
Deal found 6/18$1,578

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 June 18, 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 9/3

6:00 am-1:55 pm

2 stops21h 55m

Tallinn

Thu 9/25

6:00 am-5:23 pm

3 stops21h 23m

$544

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Mon 8/11

7:00 am-12:20 am

2 stops31h 20m

Tallinn

Tue 8/26

6:00 am-5:37 pm

2 stops21h 37m

$704

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Thu 9/4

7:00 am-6:00 pm

2 stops25h 00m

$423

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Wed 8/20

4:50 pm-7:55 pm

2 stops17h 05m

$583

OntarioTallinn

ONT - TLL

ONTTLL

Ontario

Sun 7/20

7:00 am-1:45 pm

2 stops20h 45m

$617

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

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 $986). 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.

Rainfall in Estonia by month

Plan your trip to Estonia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Estonia ranges from 1.3 - 3.3 inches per month. August is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Estonia when rainfall is around 1.3 in.

Temperature in Estonia by month

Plan your trip to Estonia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Estonia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Estonia

Get insights into the airlines that provide service to Estonia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Estonia. Reviews last updated June 18, 2025.
KLM
7.8
Good
1,364 reviews

Comfort

7.7

Boarding

7.8

Food

7.2

Crew

8.4

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,364 reviews
KLM
7.8
Good
1,364 reviews

Comfort

7.7

Boarding

7.8

Food

7.2

Crew

8.4

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
United Airlines
7.4
Good
8,810 reviews
KLM
7.8
Good
1,364 reviews

Comfort

7.7

Boarding

7.8

Food

7.2

Crew

8.4

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

  • 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 $986). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Estonia

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Los Angeles to Charles de Gaulle flights
San Francisco to Charles de Gaulle flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
San Francisco to Leonardo da Vinci/Fiumicino flights
Los Angeles to Madrid flights
Los Angeles to Istanbul flights
Los Angeles to Gatwick flights
Los Angeles to London City flights
San Francisco to Barcelona-El Prat flights
San Francisco to Istanbul flights
Los Angeles to Frankfurt flights
San Francisco to Gatwick flights
Los Angeles to Dublin flights
Los Angeles to Barcelona-El Prat flights
San Francisco to London City flights
Los Angeles to Orly flights
San Francisco to Frankfurt flights
Los Angeles to Amsterdam flights
San Francisco to Dublin flights
San Francisco to Amsterdam flights
San Francisco to Lisbon flights
San Francisco to Madrid flights
Los Angeles to Lisbon flights
San Francisco to Athens flights
Ontario to Charles de Gaulle flights
Los Angeles to Palma de Mallorca flights
Los Angeles to Luton flights
San Francisco to Malpensa flights
Los Angeles to Zurich flights
Ontario to Leonardo da Vinci/Fiumicino flights
San Diego to Heathrow flights
Los Angeles to Munich flights
San Francisco to Zurich flights
San Francisco to Munich flights
Los Angeles to Athens flights
San Francisco to Linate flights
Los Angeles to Frederic Chopin flights
Ontario to Heathrow flights
Los Angeles to Malpensa flights
Santa Ana to Leonardo da Vinci/Fiumicino flights
Los Angeles to Copenhagen flights
Santa Ana to Charles de Gaulle flights
Los Angeles to Stansted flights
Los Angeles to Beauvais-Tille flights
Los Angeles to Sabiha Gokcen flights
San Francisco to Orly flights
Burbank to Charles de Gaulle flights
Los Angeles to Linate flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.