Title: Sofia to Ontario cheap flights from $590 (SOF to ONT) - Expedia.com ![Ontario which includes street scenes and night scenes](https://images.trvl-media.com/place/2680/6f6cbfd1-6188-4a75-9ba7-05d8edf0fb1d.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Ontario Convention & Visitors Bureau / Jon Edwards. ![](https://images.trvl-media.com/place/2680/6f6cbfd1-6188-4a75-9ba7-05d8edf0fb1d.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $590 Cheap Flights from Sofia (SOF) to Ontario (ONT) [View $590 flight on Mon, May 11, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:SOF,to:ONT,departure:5/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:589.13&airProductToken=AQqgAQoyCMKCARIDODkzGNIrIOuJASim24wDMO7cjAM4T0AAWAFqBU5PQkFHcglPTE41QzVCV1AKNAjCggESBDE1MjYY64kBIO-5ASjh4owDMPXnjAM4T0ABWAFqBU5PQkFHcglPTE41QzVCV1AKNAjCggESBDY5MTYY77kBIK6bASjl6YwDMLTqjAM4T0ABWAFqBU5PQkFHcglPTE41QzVCV1ASDAgBEAEYASoCQkEyABgBIgQIARABKAIoAzAN) ## Popular airlines from Sofia Airport (SOF) to Los Angeles - Ontario Intl. Airport (ONT) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:ONT,departure:3/27/2026TANYT&leg2=from:ONT,to:SOF,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:ONT,departure:3/27/2026TANYT&leg2=from:ONT,to:SOF,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways [](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:ONT,departure:3/27/2026TANYT&leg2=from:ONT,to:SOF,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KL.svg) KLM [](https://www.expedia.com/Flights-Search?leg1=from:SOF,to:ONT,departure:3/27/2026TANYT&leg2=from:ONT,to:SOF,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Sofia to Ontario (SOF-ONT) Prices were available within the past 7 days and start at $590 for one-way flights and $986 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![JetBlue Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/b6.gif) Sun, Jul 5 - Mon, Aug 3 SOF Sofia ONT Ontario $986 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:7/5/2026TANYT&leg2=from:ONT,to:SOF,departure:8/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:985.35&airProductToken=AQqXAQoyCMJsEgQ2NDA4GNIrIIExKJHEkQMw3MSRAzhNQABYAXIGTUxPV0JHegkIyqoBEgMxMTMKMgjCbBIENjQwMBiBMSCpUSj-y5EDMNvQkQM4TUABWAFyBk1MT1dCR3oJCMqqARIDNTAwCi0IwmwSAzM1NRipUSCumwEop9SRAzCU15EDOE9AAVgBagJBTnIIT0kyQVVFWTUSCggBEAEYASoCQjYYASIECAEQASgCKAMoBDAB) ![Air Serbia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/JU.gif) Sun, Jul 5 - Mon, Aug 3 SOF Sofia ONT Ontario $1,034 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:7/5/2026TANYT&leg2=from:ONT,to:SOF,departure:8/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1033.55&airProductToken=AQqBAQonCMqqARIDMTEzGNIrIIExKJHEkQMw3MSRAzhVQABYAXIGVUxPV0JHCicIyqoBEgM1MDAYgTEgqVEo_suRAzDb0JEDOFVAAVgBcgZVTE9XQkcKLQjCbBIDMzU1GKlRIK6bASin1JEDMJTXkQM4T0ABWAFqAkFOcghPSTJBVUVZNRIKCAEQARgBKgJKVRgBIgQIARABKAIoAygEMAE) ![Air Serbia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/JU.gif) Sun, Jul 5 - Mon, Aug 3 SOF Sofia ONT Ontario $1,128 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:7/5/2026TANYT&leg2=from:ONT,to:SOF,departure:8/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1127.03&airProductToken=AQqBAQonCMqqARIDMTEzGNIrIIExKJHEkQMw3MSRAzhVQABYAXIGVUxSVEJHCicIyqoBEgM1MDAYgTEgqVEo_suRAzDb0JEDOFVAAVgBcgZVTFJUQkcKLQjCbBIDMzU1GKlRIK6bASin1JEDMJTXkQM4T0ABWAFqAkFOcghPSTJBVUVZNQqFAQotCMJsEgM0NTQYrpsBIKlRKOOSlAMwpZWUAzhPQABYAWoCQU5yCE9JMkFVRVk1CikIyqoBEgM1MDEYqVEggTEo-JeUAzCUnJQDOFJAAVgBcghSTDE0UlRCRwopCMqqARIDMTEyGIExINIrKIiglAMw06CUAzhSQAFYAXIIUkwxNFJUQkcSCggBEAEYASoCSlUYASIECAEQASgCKAMoBDAB) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Mon, Nov 23 - Mon, Dec 7 SOF Sofia ONT Ontario $1,166 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:11/23/2026TANYT&leg2=from:ONT,to:SOF,departure:12/7/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1165.13&airProductToken=AQq4AQoyCMKCARIDODkzGNIrIOuJASi9950DMI_5nQM4T0AAWAFqBU5PQkFHcglPTE40QzhCV1AKQAjCggESBDE1MDQY64kBIKOxASi0_50DMLSEngM4T0ABWAFqBU5PQkFHcglPTE40QzhCV1B6CgjBggESBDE1MDQKQAjCggESBDI0MzQYo7EBIK6bASiqhp4DMO6HngM4T0ABWAFqBU5PQkFHcglPTE40QzhCV1B6CgjBggESBDI0MzQKuAEKQAjCggESBDUxMDYYrpsBIKOxASjfnJ8DMJOenwM4TEAAWAFqBU5PQkFHcglMTE4wQzJCV1B6CgjBggESBDUxMDYKQAjCggESBDE1MDUYo7EBIOuJASiZo58DMLqnnwM4TEABWAFqBU5PQkFHcglMTE4wQzJCV1B6CgjBggESBDE1MDUKMgjCggESAzg5MhjriQEg0ison6ufAzDirJ8DOExAAVgBagVOT0JBR3IJTExOMEMyQldQEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Mon, Nov 16 - Sun, Nov 29 SOF Sofia ONT Ontario $1,203 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:11/16/2026TANYT&leg2=from:ONT,to:SOF,departure:11/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1202.13&airProductToken=AQq4AQoyCMKCARIDODkzGNIrIOuJASjdqJ0DMK-qnQM4T0AAWAFqBU5PQkFHcglPTE40QzhCV1AKQAjCggESBDE1OTAY64kBIKOxASjHsZ0DMMy2nQM4T0ABWAFqBU5PQkFHcglPTE40QzhCV1B6CgjBggESBDE1OTAKQAjCggESBDI0MzQYo7EBIK6bASjKt50DMI65nQM4T0ABWAFqBU5PQkFHcglPTE40QzhCV1B6CgjBggESBDI0MzQKuAEKQAjCggESBDUxMDkYrpsBIKOxASjHvJ4DMPm9ngM4TEAAWAFqBU5PQkFHcglMTE4wQzJCV1B6CgjBggESBDUxMDkKQAjCggESBDE1ODkYo7EBIOuJASjdvp4DMO_CngM4TEABWAFqBU5PQkFHcglMTE4wQzJCV1B6CgjBggESBDE1ODkKMgjCggESAzg5MhjriQEg0isonsSeAzDcxZ4DOExAAVgBagVOT0JBR3IJTExOMEMyQldQEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, Jul 5 - Mon, Aug 3 SOF Sofia ONT Ontario $1,211 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:7/5/2026TANYT&leg2=from:ONT,to:SOF,departure:8/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1210.53&airProductToken=AQq6AQpACNWCARIEOTI0NRjSKyCMFSjTwpEDMMvDkQM4V0AAWAFqCEVDT0JBU0lDcghXWDNYS1hCUXoKCMyQARIEMTcwMwo_CNWCARIEOTQ1ORiMFSCDaSjBzZEDMMHSkQM4V0ABWAFqCEVDT0JBU0lDcghXWDNYS1hCUXoJCMyQARIDNDgwCjUI1YIBEgQyMDI4GINpIK6bASiQ1ZEDMJ7WkQM4V0ABWAFqCEVDT0JBU0lDcghXWDNYS1hCUQqgAQo1CNWCARIEMTMxNBiumwEgrhwoyoqUAzDJjJQDOEtAAFgBaghFQ09MSUdIVHIIS1g2UUtYQlEKMQjMsAESATcYrhwguTwoqI2UAzC6kZQDOEtAAVgBaghFQ09MSUdIVHIIS1g2UUtYQlEKNAjMsAESBDEzOTAYuTwg0iso5JKUAzDrk5QDOEtAAVgBaghFQ09MSUdIVHIIS1g2UUtYQlESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, Jul 5 - Mon, Aug 3 SOF Sofia ONT Ontario $1,214 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:7/5/2026TANYT&leg2=from:ONT,to:SOF,departure:8/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1213.53&airProductToken=AQq6AQpACNWCARIEOTI0NRjSKyCMFSjTwpEDMMvDkQM4V0AAWAFqCEVDT0JBU0lDcghXWDNYS1hCUXoKCMyQARIEMTcwMwo_CNWCARIEOTQ1ORiMFSCDaSjBzZEDMMHSkQM4V0ABWAFqCEVDT0JBU0lDcghXWDNYS1hCUXoJCMyQARIDNDgwCjUI1YIBEgQyMDI4GINpIK6bASiQ1ZEDMJ7WkQM4V0ABWAFqCEVDT0JBU0lDcghXWDNYS1hCUQq6AQo1CNWCARIEMTMxNBiumwEgrhwoyoqUAzDJjJQDOEtAAFgBaghFQ09CQVNJQ3IIS1g2UUtYQlEKPwjVggESBDg3NDcYrhwgjBUo842UAzDxkZQDOEtAAVgBaghFQ09CQVNJQ3IIS1g2UUtYQlF6CQjMkAESAzQzNwpACNWCARIEOTI0NhiMFSDSKyjzkpQDMOaTlAM4S0ABWAFqCEVDT0JBU0lDcghLWDZRS1hCUXoKCMyQARIEMTcwMhIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, Jul 5 - Mon, Aug 3 SOF Sofia ONT Ontario $1,215 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:7/5/2026TANYT&leg2=from:ONT,to:SOF,departure:8/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1214.63&airProductToken=AQq6AQpACNWCARIEOTI0NRjSKyCMFSjTwpEDMMvDkQM4V0AAWAFqCEVDT0JBU0lDcghXWDNYS1hCUXoKCMyQARIEMTcwMwo_CNWCARIEOTQ1ORiMFSCDaSjBzZEDMMHSkQM4V0ABWAFqCEVDT0JBU0lDcghXWDNYS1hCUXoJCMyQARIDNDgwCjUI1YIBEgQyMDI4GINpIK6bASiQ1ZEDMJ7WkQM4V0ABWAFqCEVDT0JBU0lDcghXWDNYS1hCUQq6AQo1CNWCARIEMTMxNBiumwEgrhwoyoqUAzDJjJQDOEtAAFgBaghFQ09CQVNJQ3IIS1g2UUtYQlEKPwjVggESBDg4MzcYrhwgpQQokY6UAzCFkpQDOEtAAVgBaghFQ09CQVNJQ3IIS1g2UUtYQlF6CQjMkAESAzQzMQpACNWCARIEOTEyNBilBCDSKyivk5QDMLGUlAM4S0ABWAFqCEVDT0JBU0lDcghLWDZRS1hCUXoKCMyQARIEMTQyNhIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![LOT-Polish Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LO.gif) Sun, Jul 5 - Mon, Aug 3 SOF Sofia ONT Ontario $1,216 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:7/5/2026TANYT&leg2=from:ONT,to:SOF,departure:8/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1215.85&airProductToken=AQqXAQozCMyeARIDNjM0GNIrIJawASixxZEDMKTGkQM4U0AAWAFqCEVDT1NUQU5EcgdTMUFORVlCCjEIzJ4BEgE2GJawASCpUSiCzpEDMLzSkQM4U0ABWAFqCEVDT1NUQU5EcgdTMUFORVlCCi0IwmwSAzM1NRipUSCumwEop9SRAzCU15EDOE9AAVgBagJBTnIIT0kyQVVFWTUSCggBEAEYASoCTE8YASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, Jul 5 - Mon, Aug 3 SOF Sofia ONT Ontario $1,218 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SOF,to:ONT,departure:7/5/2026TANYT&leg2=from:ONT,to:SOF,departure:8/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1217.33&airProductToken=AQq6AQpACNWCARIEOTI0NRjSKyCMFSjTwpEDMMvDkQM4V0AAWAFqCEVDT0JBU0lDcghXWDNYS1hCUXoKCMyQARIEMTcwMwo_CNWCARIEOTQ1ORiMFSCDaSjBzZEDMMHSkQM4V0ABWAFqCEVDT0JBU0lDcghXWDNYS1hCUXoJCMyQARIDNDgwCjUI1YIBEgQyMDI4GINpIK6bASiQ1ZEDMJ7WkQM4V0ABWAFqCEVDT0JBU0lDcghXWDNYS1hCUQq4AQo1CNWCARIEMTMxNBiumwEgrhwoyoqUAzDJjJQDOEtAAFgBaghFQ09CQVNJQ3IIS1g2UUtYQlEKPgjVggESBDk4NTAYrhwglSIooI6UAzC3kpQDOEtAAVgBaghFQ09CQVNJQ3IIS1g2UUtYQlF6CAjPpgESAjQ2Cj8I1YIBEgQ5ODMyGJUiINIrKO6SlAMwyJOUAzhLQAFYAWoIRUNPQkFTSUNyCEtYNlFLWEJRegkIz6YBEgM3NzESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Frequently asked questions ### How much does a flight from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) cost? ### What is the cheapest month to fly from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)? ### Which airlines fly direct from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)? ### What is the cheapest airline that flies from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)? ### How do I find cheap flights from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)? ### What is the best time to fly from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)? ### What is the earliest flight from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)? ### How long does it take to fly from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)? ### Can you fly business or first class from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)? ### How do I earn miles on a Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight with Expedia? ### What airports do you fly into for Ontario from SOF (SOF)? ### Is it cheaper to buy a plane ticket from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) at the last minute? ### Is it cheaper to book a Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package? ### Can I cancel or change the date of my flight from Sofia (SOF) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)? ## Travel information | Origin airport | Sofia | | ------------------- | --------------------------------------------- | | Destination airport | Los Angeles - Ontario Intl. | | Airlines serving | British Airways, JetBlue Airways, KLM, United | | Roundtrip price | $985 | | Distance | 6588 mi | ## Book with confidence # Sofia to Ontario Flights The cheapest times to fly from Sofia to Ontario On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sofia to Ontario are during the month of July. You can find some of the cheapest flights from Sofia to Ontario with Expedia's search tool and vast selection of airlines. The best time to book a flight from Sofia to Ontario Sunday is one of the best days to book for cheap flights from Sofia to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. How to find cheap round-trip tickets from Sofia to Ontario Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sofia to Ontario in 2026\. You can also book with separate airlines for your outbound and return journeys, from $590 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sofia to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Sofia to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. \*Terms apply. Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages. \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Other - [Hotels near Ontario Convention Center ](https://www.expedia.com/Ontario-Convention-Center-Hotels.0-l6128615-0.Travel-Guide-Filter-Hotels) - [Hotels near Cucamonga-Guasti Regional Park ](https://www.expedia.com/Cucamonga-Guasti-Regional-Park-Hotels.0-l553248621532641435-0.Travel-Guide-Filter-Hotels) - [Hotels near Guasti ](https://www.expedia.com/Guasti-Los-Angeles-Hotels.0-n3000748623-0.Travel-Guide-Filter-Hotels) - [Resorts & Hotels with Spas in Guasti ](https://www.expedia.com/Guasti-Los-Angeles-Hotels-Spa-Hotel.0-n3000748623-0-tSpaHotel.Travel-Guide-Filter-Hotels) - [Hotels with a View in Guasti ](https://www.expedia.com/Guasti-Los-Angeles-Hotels-Hotels-With-View.0-n3000748623-0-tHotelswithView.Travel-Guide-Filter-Hotels) - [Hotels near Disneyland® Resort ](https://www.expedia.com/Disneyland-Resort-Hotels.0-l6025613-0.Travel-Guide-Filter-Hotels) - 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[Flights to Rancho Cucamonga ](https://www.expedia.com/Cheap-Flights-To-Rancho-Cucamonga.d7732.Travel-Guide-Flights) - [Cucamonga-Guasti Regional Park ](https://www.expedia.com/Cucamonga-Guasti-Regional-Park-Guasti.d553248621532641435.Vacation-Attraction) - [Ontario Convention Center ](https://www.expedia.com/Ontario-Convention-Center-Los-Angeles.d6128615.Vacation-Attraction) - [Toyota Arena ](https://www.expedia.com/Toyota-Arena-Guasti.d6129815.Vacation-Attraction) - [Scandia Amusement Park ](https://www.expedia.com/Scandia-Amusement-Park-Los-Angeles.d6237111.Vacation-Attraction) - [Ontario Mills Shopping Mall ](https://www.expedia.com/Ontario-Mills-Shopping-Mall-Los-Angeles.d6063437.Vacation-Attraction) - [Villaggio Nail Spa ](https://www.expedia.com/Villaggio-Nail-Spa-Rancho-Cucamonga.d553248621532641437.Vacation-Attraction) - [Visit Rancho Cucamonga ](https://www.expedia.com/Rancho-Cucamonga.dx7732) - [Car rentals near Los Angeles ](https://www.expedia.com/Car-Rentals-In-Los-Angeles.d178280.Car-Rental-Guide) - 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