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Ontario

$570+ Cheap flights from Basel (EAP) to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
EAP — ONT
Aug 17 — Aug 241
Sun 8/17
Sun 8/24
1 adult, Economy
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Cheap flight deals from Basel to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Basel (EAP) 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 August 12, 2025.

Round-trip from

$570
(Bravofly)

Popular in

July

Cheapest in

April

Average price

$813
From Basel (EAP) to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Basel to Ontario

Cheapest flights from Basel to Ontario
Explore the most affordable flight options available from Basel to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 12, 2025.

This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:00 amBSL - ONT
2 stops19h 47mAmerican Airlines
Sun 12/1412:53 pmONT - BSL
2 stops17h 12mAmerican Airlines
Deal found 8/12$581
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/1111:25 amBSL - ONT
2 stops18h 08mUnited Airlines
Sat 10/186:36 pmONT - BSL
2 stops15h 59mUnited Airlines
Deal found 8/10$611
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/139:45 amBSL - ONT
2 stops16h 52mUnited Airlines
Wed 10/156:36 pmONT - BSL
2 stops15h 59mUnited Airlines
Deal found 8/10$617
This lastminute.com deal was found by Cheapflights users on 8/12. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2410:55 amBSL - ONT
2 stops20h 04mBritish Airways
Wed 12/35:09 pmONT - BSL
2 stops16h 31mBritish Airways
Deal found 8/12$628
This United Airlines deal was found by Cheapflights users on 8/10. 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 8/1811:30 amBSL - ONT
2 stops20h 22mUnited Airlines
Mon 8/256:00 amONT - BSL
2 stops21h 25mUnited Airlines
Deal found 8/10$679
This United Airlines deal was found by Cheapflights users on 8/11. 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 10/19:45 amBSL - ONT
2 stops21h 45mUnited Airlines
Sat 11/11:29 pmONT - BSL
2 stops22h 11mUnited Airlines
Deal found 8/11$686
This American Airlines deal was found by Cheapflights users on 8/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/177:05 amBSL - ONT
2 stops20h 12mAmerican Airlines
Tue 8/266:10 amONT - BSL
2 stops19h 45mAmerican Airlines
Deal found 8/10$693
This lastminute.com deal was found by Cheapflights users on 8/12. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:10 amBSL - ONT
2 stops17h 37mBritish Airways
Wed 12/245:03 pmONT - BSL
2 stops20h 02mBritish Airways
Deal found 8/12$793
This United Airlines deal was found by Cheapflights users on 8/10. 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 10/319:45 amBSL - ONT
2 stops18h 59mUnited Airlines
Sat 11/157:00 amONT - BSL
2 stops20h 25mUnited Airlines
Deal found 8/10$815
This United Airlines deal was found by Cheapflights users on 8/11. 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 12/279:45 amBSL - ONT
2 stops19h 32mUnited Airlines
Thu 1/87:00 amONT - BSL
2 stops20h 25mUnited Airlines
Deal found 8/11$817
This Iberia deal was found by Cheapflights users on 8/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2512:10 pmBSL - ONT
2 stops19h 38mMultiple Airlines
Sun 9/78:15 amONT - BSL
2 stops18h 05mMultiple Airlines
Deal found 8/11$874
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/242:25 pmBSL - ONT
2 stops18h 15mDelta
Sat 9/61:15 pmONT - BSL
2 stops15h 35mDelta
Deal found 8/10$875

Cheapflights Fare Finder

 
Customize your flight search to find flights from Basel 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 August 12, 2025.
Use the filters below to find and compare flights from Basel to Ontario that are best for you.

Fly from

Basel

Fly to

Ontario

Route

Depart

Return

Price

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Sat 1/24

7:10 am-5:53 pm

2 stops19h 43m

Ontario

Sat 2/7

5:03 pm-6:05 pm

2 stops16h 02m

$570

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Fri 2/6

7:00 am-5:53 pm

2 stops19h 53m

Ontario

Fri 2/20

3:05 pm-5:05 pm

2 stops17h 00m

$578

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Wed 1/28

11:10 am-10:02 pm

2 stops19h 52m

Ontario

Wed 2/18

5:03 pm-6:40 pm

2 stops16h 37m

$589

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Mon 9/15

11:30 am-8:33 pm

2 stops18h 03m

Ontario

Fri 10/17

9:36 am-12:25 pm

2 stops17h 49m

$611

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Mon 9/15

11:30 am-8:33 pm

2 stops18h 03m

Ontario

Sat 10/18

6:36 pm-7:35 pm

2 stops15h 59m

$611

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Thu 9/11

11:25 am-8:33 pm

2 stops18h 08m

Ontario

Tue 10/14

6:36 pm-7:35 pm

2 stops15h 59m

$611

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Mon 10/13

11:30 am-10:52 pm

2 stops20h 22m

Ontario

Wed 10/22

5:05 am-12:25 pm

2 stops22h 20m

$611

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Fri 9/12

11:30 am-8:33 pm

2 stops18h 03m

Ontario

Sat 10/18

6:36 pm-7:35 pm

2 stops15h 59m

$611

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Fri 9/12

11:30 am-8:33 pm

2 stops18h 03m

Ontario

Wed 10/15

6:36 pm-7:35 pm

2 stops15h 59m

$611

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Thu 9/11

11:25 am-8:43 pm

2 stops18h 18m

Ontario

Wed 10/15

6:36 pm-7:35 pm

2 stops15h 59m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 23 results
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Best time to book a flight from Basel to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Basel to Ontario (average of $246). Flying from Basel 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.

Related info for your journey

Find useful and relevant information for your journey from Basel to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Basel to Ontario (average of $246). Flying from Basel 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.

See more FAQs

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