The cheapest times to fly from SOF to ONT are
- January 8th to May 27th (except the weeks of March 26th, April 2nd, and May 7th)
- October 8th to December 9th
based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SOF to ONT is late January. Prices can be as high as $1674 for Friday flights during mid July, or as low as $843 for Tuesday flights around late January.
When to Fly to Ontario
Flying from Sofia (SOF) to Ontario, CA (ONT) will usually cost between $850 to $1335 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January with an average ticket price of $877. Due to high demand the most expensive time to fly is mid July, with an average price of $1385. Planning your trip to low-cost times can easily save you $508 on economy flights and even more on first-class flights. Generally, any price below $971 can be considered a good price for a round-trip SOF to ONT flight.
See below for a graph of average weekly prices for the SOF to ONT route. All prices are for round-trip tickets in USD.
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Compared to other flights, the SOF to ONT flight is priced close to the average and costs slightly more than the average flight leaving from Sofia. The average price per mile (for a direct flight) is $0.09, which is far below average.
Flight Prices by Day of the Week
Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $179 (14%) on this flight.
Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $963. Return trip prices are from the ONT to SOF flight, and often highlight the quality of our data in showing the same trend.
Departing Prices by Day
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Return Trip Prices by Day
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Nonstop Flights and Layovers
Travelers looking to fly from SOF to ONT can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 12 hour 50 minutes may not be realistic.
Alternative Nearby Airports
Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from SOF to ONT while comparing.
- 47 miles (76 km) away from ONT
- Usually 19.52% less expensive than ONT
- 1-layover flights available
- 30 miles (48 km) away from ONT
- Usually 7.57% less expensive than ONT
- 2-layover flights available
- 44 miles (71 km) away from ONT
- Usually 6.54% less expensive than ONT
- 2-layover flights available
- 94 miles (151 km) away from ONT
- Usually 5.87% less expensive than ONT
- 1-layover flights available
- 65 miles (105 km) away from ONT
- Usually 3.50% less expensive than ONT
- 2-layover flights available
Flight Hacking SOF to ONT
Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SOF to ONT — but Champion Traveler does!
- Price for both tickets: $791
- Average savings: $180 (18.54%)
- Price for both tickets: $810
- Average savings: $161 (16.58%)
- Price for both tickets: $916
- Average savings: $56 (5.72%)
Flight Questions Answered
Still have questions about flying from SOF to ONT? We’ve got answers.
Which airlines fly this route?
You can find 12 major airlines flying this route most often: Air Canada, Air France, Alaska, American, British Airways, Condor, Delta, KLM, Lufthansa, Qatar Airways, Turkish Airlines, United, and potentially more during busy seasons.
How far away is it from Ontario International Airport to Sofia Airport?
The distance between the two airports is roughly 6588 miles or 10602 kilometers.
How long does it take to fly from SOF to ONT?
The real-world flight time for a nonstop SOF to ONT flight is about 12 hour 50 minutes.
How many flights go between Sofia and Ontario, CA?
It depends on the day of the week and the date, but a typical day might have around 15 available flights from SOF to ONT.
Airport Location Info
Departing Airport
Origination code | SOF |
Origination airport name | Sofia Airport |
City | Sofia |
Country | Bulgaria |
Latitude | 42.7 |
Longitude | 23.4 |
Return Airport
Destination code | ONT |
Destination airport name | Ontario International Airport |
City | Ontario, CA |
Country | the United States |
Latitude | 34.1 |
Longitude | -117.6 |
Other Resources
Flights to ONT
Flights from ONT
Popular Flights
Flights to SOF
Flights from SOF
Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.