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Ontario

$721+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — ONT
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

This British Airways deal was found by Cheapflights users on 1/25. 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.
Mon 3/308:10 pm
SOF
-
ONT
2 stops33h 35m
British Airways
Sat 4/252:08 pm
ONT
-
SOF
2 stops20h 02m
British Airways
Deal found 1/25$841
This British Airways deal was found by Cheapflights users on 1/26. 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.
Sun 3/12:30 pm
SOF
-
ONT
2 stops42h 19m
British Airways
Tue 3/3110:56 am
ONT
-
SOF
2 stops23h 34m
British Airways
Deal found 1/26$870
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/176:00 am
SOF
-
ONT
2 stops21h 41m
United Airlines
Tue 3/171:50 pm
ONT
-
SOF
2 stops19h 30m
United Airlines
Deal found 1/26$940
This United Airlines deal was found by Cheapflights users on 1/25. 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 3/316:10 am
SOF
-
ONT
2 stops26h 16m
United Airlines
Tue 4/287:00 am
ONT
-
SOF
2 stops20h 05m
United Airlines
Deal found 1/25$941
This United Airlines deal was found by Cheapflights users on 1/27. 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 2/76:25 am
SOF
-
ONT
2 stops24h 33m
United Airlines
Sat 3/76:37 pm
ONT
-
SOF
2 stops18h 08m
United Airlines
Deal found 1/27$942
This United Airlines deal was found by Cheapflights users on 1/27. 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 2/86:10 am
SOF
-
ONT
2 stops21h 33m
United Airlines
Tue 3/38:00 am
ONT
-
SOF
2 stops19h 45m
United Airlines
Deal found 1/27$943
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/22:20 pm
SOF
-
ONT
2 stops18h 33m
United Airlines
Tue 2/108:00 am
ONT
-
SOF
2 stops19h 45m
United Airlines
Deal found 1/26$970
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Thu 2/56:00 am
SOF
-
ONT
2 stops24h 58m
United Airlines
Thu 3/56:37 pm
ONT
-
SOF
2 stops18h 08m
United Airlines
Deal found 1/27$971
This Priceline deal was found by Cheapflights users on 1/25. 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.
Sun 3/299:05 pm
SOF
-
ONT
2 stops29h 17m
British Airways
Sun 4/267:30 am
ONT
-
SOF
2 stops25h 50m
British Airways
Deal found 1/25$973
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 2/62:35 pm
SOF
-
ONT
2 stops18h 18m
United Airlines
Thu 2/191:45 pm
ONT
-
SOF
2 stops18h 15m
United Airlines
Deal found 1/27$979
This Turkish Airlines deal was found by Cheapflights users on 1/27. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:35 am
SOF
-
ONT
2 stops24h 23m
Multiple Airlines
Wed 6/101:47 pm
ONT
-
SOF
2 stops20h 28m
Multiple Airlines
Deal found 1/27$1,183
This British Airways deal was found by Cheapflights users on 1/25. 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.
Mon 1/265:25 pm
SOF
-
ONT
2 stops35h 20m
British Airways
Fri 1/3011:59 pm
ONT
-
SOF
2 stops27h 01m
British Airways
Deal found 1/25$1,184

Find 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$841
(British Airways)

One-way from

$721
(British Airways)

Popular in

May

Cheapest in

October

Average price

$939
Provider with most accurate pricing for Sofia-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sofia-Los Angeles flights.
Search Deals
From Sofia to Ontario
Search Deals
One-way flight from Sofia to Ontario
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 27, 2026.
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 3/30

8:10 pm-7:45 pm

2 stops33h 35m

Ontario

Sun 4/26

10:59 am-7:20 pm

2 stops22h 21m

$841

SofiaOntario

SOF - ONT

SOFONT

Sofia

Mon 3/30

8:10 pm-7:45 pm

2 stops33h 35m

Ontario

Sat 4/25

2:08 pm-8:10 pm

2 stops20h 02m

$841

SofiaOntario

SOF - ONT

SOFONT

Sofia

Sun 3/1

2:30 pm-10:49 pm

2 stops42h 19m

Ontario

Tue 3/31

10:56 am-8:30 pm

2 stops23h 34m

$870

SofiaOntario

SOF - ONT

SOFONT

Sofia

Sun 3/1

2:25 pm-10:57 pm

2 stops18h 32m

Ontario

Sun 3/15

6:15 am-10:45 pm

2 stops31h 30m

$940

SofiaOntario

SOF - ONT

SOFONT

Sofia

Tue 2/17

6:00 am-5:41 pm

2 stops21h 41m

Ontario

Tue 3/17

1:50 pm-6:20 pm

2 stops19h 30m

$940

SofiaOntario

SOF - ONT

SOFONT

Sofia

Tue 3/24

6:00 am-10:57 pm

2 stops25h 57m

Ontario

Sat 4/25

7:00 am-11:00 am

2 stops18h 00m

$941

SofiaOntario

SOF - ONT

SOFONT

Sofia

Sat 4/4

6:20 am-10:26 pm

2 stops26h 06m

Ontario

Tue 4/28

7:00 am-1:05 pm

2 stops20h 05m

$941

SofiaOntario

SOF - ONT

SOFONT

Sofia

Wed 3/25

6:10 am-10:18 pm

2 stops25h 08m

Ontario

Sat 4/25

7:00 am-11:00 am

2 stops18h 00m

$941

SofiaOntario

SOF - ONT

SOFONT

Sofia

Tue 3/31

6:10 am-10:26 pm

2 stops26h 16m

Ontario

Tue 4/28

7:00 am-1:05 pm

2 stops20h 05m

$941

SofiaOntario

SOF - ONT

SOFONT

Sofia

Wed 4/1

6:20 am-10:45 pm

2 stops26h 25m

Ontario

Sun 5/3

7:00 am-11:00 am

2 stops18h 00m

$941

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 24 results
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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, July is the cheapest month in which you can book a flight from Sofia to Ontario (average of $566). Flying from Sofia to Ontario in August is currently the most expensive (average of $822). 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 Sofia to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Sofia to Ontario?

    For as low as $940, British Airways can have you in Ontario from Sofia in 18h 32m. There are 6585 mi between Sofia and Ontario. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, July is the cheapest month in which you can book a flight from Sofia to Ontario (average of $566). Flying from Sofia to Ontario in August is currently the most expensive (average of $822). 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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