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Ontario

$814+ Cheap flights from Sofia (SOF) to Ontario (ONT)

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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — ONT
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Sofia to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 3, 2025.

Round-trip from

$903
(Priceline)

One-way from

$814
(Air Serbia)

Popular in

August

Cheapest in

February

Average price

$835
From Sofia to Ontario
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One-way flight from Sofia to Ontario
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Highest demand for flights based on searches. 3% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Sofia to Ontario

Cheapest flights from Sofia to Ontario
Explore the most affordable flight options available from Sofia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Priceline deal was found by Cheapflights users on 7/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/175:25 pmSOF - ONT
2 stops34h 24mBritish Airways
Mon 12/111:59 pmONT - SOF
2 stops34h 11mBritish Airways
Deal found 7/2$903
This United Airlines deal was found by Cheapflights users on 7/1. 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 10/12:05 pmSOF - ONT
2 stops18h 37mUnited Airlines
Fri 10/106:36 pmONT - SOF
2 stops18h 24mUnited Airlines
Deal found 7/1$915
This Air France deal was found by Cheapflights users on 6/30. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:00 amSOF - ONT
2 stops25h 41mAir France
Tue 11/1812:00 pmONT - SOF
2 stops40h 05mAir France
Deal found 6/30$1,049
This Air Serbia deal was found by Cheapflights users on 7/1. 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/284:05 pmSOF - ONT
2 stops39h 54mAir Serbia
Mon 8/411:59 pmONT - SOF
2 stops29h 36mAir Serbia
Deal found 7/1$1,250
This Qatar Airways deal was found by Cheapflights users on 7/2. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/31:15 pmSOF - ONT
2 stops34h 35mQatar Airways
Wed 7/1612:00 pmONT - SOF
2 stops38h 30mQatar Airways
Deal found 7/2$2,777

Cheapflights Fare Finder

Customize your flight search to find flights from Sofia to Ontario 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 July 3, 2025.
Use the filters below to find and compare flights from Sofia to Ontario that are best for you.

Fly from

Sofia

Fly to

Ontario

Route

Depart

Return

Price

SofiaOntario

SOF - ONT

SOFONT

Sofia

Mon 11/17

5:25 pm-5:49 pm

2 stops34h 24m

Ontario

Mon 12/1

11:59 pm-8:10 pm

2 stops34h 11m

$903

SofiaOntario

SOF - ONT

SOFONT

Sofia

Wed 10/1

2:05 pm-10:42 pm

2 stops18h 37m

Ontario

Fri 10/10

6:36 pm-11:00 pm

2 stops18h 24m

$915

SofiaOntario

SOF - ONT

SOFONT

Sofia

Fri 11/14

7:00 am-10:41 pm

2 stops25h 41m

Ontario

Tue 11/18

12:00 pm-2:05 pm

2 stops40h 05m

$1,049

SofiaOntario

SOF - ONT

SOFONT

Sofia

Mon 7/28

4:05 pm-9:59 pm

2 stops39h 54m

Ontario

Mon 8/4

11:59 pm-3:35 pm

2 stops29h 36m

$1,250

SofiaOntario

SOF - ONT

SOFONT

Sofia

Mon 8/25

4:05 pm-9:59 pm

2 stops39h 54m

$814

SofiaOntario

SOF - ONT

SOFONT

Sofia

Mon 11/17

5:25 pm-5:49 pm

2 stops34h 24m

$818

SofiaOntario

SOF - ONT

SOFONT

Sofia

Wed 8/27

7:00 am-4:08 pm

2 stops19h 08m

$857

SofiaOntario

SOF - ONT

SOFONT

Sofia

Thu 8/28

8:00 am-10:30 pm

2 stops24h 30m

$914

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Best time to book a flight from Sofia to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Sofia to Ontario (average of $246). Flying from Sofia to Ontario in March is currently the most expensive (average of $328). 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated July 3, 2025.
Peruse reviews from past customers who have flown with KLM, Air France, and United Airlines from Sofia to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,367 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Crew

8.4

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
1,367 reviews
KLM
7.8
Good
1,367 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Crew

8.4

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.
Air France
7.5
Good
1,465 reviews
KLM
7.8
Good
1,367 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Crew

8.4

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
8,861 reviews
KLM
7.8
Good
1,367 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Crew

8.4

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.
British Airways
6.6
Okay
7,093 reviews
KLM
7.8
Good
1,367 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Crew

8.4

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.
Air Serbia
6.3
Okay
197 reviews
KLM
7.8
Good
1,367 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Crew

8.4

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 Sofia to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Sofia to Ontario one-way?

    One-way options have recently been found by users for as low as $814 on Air Serbia. Other airlines that offer cheap prices include British Airways from $818 and KLM from $857 one-way.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Sofia to Ontario (average of $246). Flying from Sofia to Ontario in March is currently the most expensive (average of $328). 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.

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