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Ontario

$614+ 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
EAP — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$614
(British Airways)

Popular in

December

Cheapest in

November

Average price

$691
From Basel (EAP) to Ontario
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Highest demand for flights based on searches. 5% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This British Airways deal was found by Cheapflights users on 6/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:35 amBSL - ONT
2 stops20h 10mBritish Airways
Tue 11/412:53 pmONT - BSL
2 stops17h 07mBritish Airways
Deal found 6/11$614
This United Airlines deal was found by Cheapflights users on 6/11. 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 10/811:25 amBSL - ONT
2 stops18h 59mUnited Airlines
Mon 11/36:38 pmONT - BSL
2 stops16h 02mUnited Airlines
Deal found 6/11$759
This American Airlines deal was found by Cheapflights users on 6/12. 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 10/246:00 amBSL - ONT
2 stops19h 36mAmerican Airlines
Mon 10/275:02 pmONT - BSL
2 stops17h 08mAmerican Airlines
Deal found 6/12$833
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/236:15 amBSL - ONT
2 stops20h 01mDelta
Sat 8/27:05 amONT - BSL
2 stops17h 15mDelta
Deal found 6/12$907
This Iberia deal was found by Cheapflights users on 6/10. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:15 amBSL - ONT
2 stops21h 33mMultiple Airlines
Sun 1/411:00 amONT - BSL
2 stops19h 00mMultiple Airlines
Deal found 6/10$910

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 June 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 10/11

6:35 am-5:45 pm

2 stops20h 10m

Ontario

Tue 11/4

12:53 pm-3:00 pm

2 stops17h 07m

$614

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Wed 10/8

11:25 am-9:24 pm

2 stops18h 59m

Ontario

Mon 11/3

6:38 pm-7:40 pm

2 stops16h 02m

$759

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Fri 10/24

6:00 am-4:36 pm

2 stops19h 36m

Ontario

Mon 10/27

5:02 pm-6:10 pm

2 stops17h 08m

$833

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Wed 7/23

6:15 am-5:16 pm

2 stops20h 01m

Ontario

Sat 8/2

7:05 am-9:20 am

2 stops17h 15m

$907

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Tue 7/1

11:55 am-10:11 pm

2 stops19h 16m

Ontario

Fri 8/15

8:14 am-11:00 am

2 stops17h 46m

$1,521

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Sat 9/13

6:35 am-6:54 pm

2 stops21h 19m

$795

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Mon 11/17

10:55 am-9:41 pm

2 stops19h 46m

$812

BaselOntario

BSL - ONT

BSLONT

Basel EuroAirport Swiss

Tue 6/17

6:15 am-5:10 pm

2 stops19h 55m

$1,580

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Basel to Ontario, such as Delta, United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
7,008 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as $795. However, be on the lookout for offers from American Airlines and Delta, as they are both options that can get you from Basel to Ontario for a low price.

  • 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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