HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$560+ Cheap flights from Stuttgart (STR) 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
STR — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Stuttgart to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Stuttgart to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Stuttgart (STR) 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

$560
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$759
From Stuttgart Echterdingen to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Stuttgart to Ontario

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

This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/92:40 pmSTR - ONT
2 stops17h 02mUnited Airlines
Wed 10/291:00 pmONT - STR
2 stops15h 55mUnited Airlines
Deal found 6/12$560
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2310:00 pmSTR - ONT
2 stops29h 25mBritish Airways
Fri 9/124:45 pmONT - STR
2 stops33h 25mBritish Airways
Deal found 6/10$562
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/276:15 amSTR - ONT
2 stops19h 55mDelta
Mon 9/229:55 amONT - STR
2 stops18h 40mDelta
Deal found 6/11$690
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.
Thu 8/2812:15 pmSTR - ONT
2 stops18h 59mMultiple Airlines
Wed 9/108:15 amONT - STR
2 stops18h 10mMultiple Airlines
Deal found 6/10$1,018

Cheapflights Fare Finder

Customize your flight search to find flights from Stuttgart 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 Stuttgart to Ontario that are best for you.

Fly from

Stuttgart

Fly to

Ontario

Route

Depart

Return

Price

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Thu 10/9

2:40 pm-10:42 pm

2 stops17h 02m

Ontario

Wed 10/29

1:00 pm-12:55 pm

2 stops15h 55m

$560

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Sat 8/23

10:00 pm-6:25 pm

2 stops29h 25m

Ontario

Fri 9/12

4:45 pm-11:10 am

2 stops33h 25m

$562

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Fri 6/27

6:15 am-5:10 pm

2 stops19h 55m

Ontario

Mon 9/22

9:55 am-1:35 pm

2 stops18h 40m

$690

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Thu 8/28

12:15 pm-10:14 pm

2 stops18h 59m

Ontario

Wed 9/10

8:15 am-11:25 am

2 stops18h 10m

$1,018

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Fri 6/20

1:35 pm-4:18 pm

3 stops59h 43m

$619

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Tue 9/30

12:15 pm-10:33 pm

2 stops19h 18m

$859

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Fri 6/20

9:20 pm-7:01 pm

2 stops30h 41m

$900

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Wed 6/18

6:10 am-9:10 pm

2 stops24h 00m

$980

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Sun 10/5

6:15 pm-12:02 am

2 stops38h 47m

$1,139

StuttgartOntario

STR - ONT

STRONT

Stuttgart Echterdingen

Fri 10/3

9:40 am-5:40 pm

2 stops17h 00m

$1,600

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from Stuttgart to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Stuttgart to Ontario (average of $246). Flying from Stuttgart 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.
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

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
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

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
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

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
Iberia
7.0
Good
2,776 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

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
Lufthansa
6.8
Okay
7,139 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

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 Stuttgart 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 flying from Stuttgart to Ontario round-trip?

    Cheapflights users have booked flights from Stuttgart to Ontario round-trip from $560. Other airlines that can offer you cheap pricing are British Airways, from $562, and Delta, from $690.

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

    One-way options have recently been found by users for as low as $859 on American Airlines. Other airlines that offer cheap prices include British Airways from $900 and Lufthansa from $980 one-way.

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Stuttgart to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Frankfurt to Los Angeles flights
Frankfurt to San Francisco flights
Frankfurt to Las Vegas flights
Frankfurt to Ontario flights
Frankfurt to Santa Ana flights
Munich to Los Angeles flights
Frankfurt to Oakland flights
Frankfurt to Long Beach flights
Munich to San Francisco flights
Frankfurt to San Jose flights
Munich to San Diego flights
Munich to Las Vegas flights
Stuttgart to Las Vegas flights
Munich to Oakland flights
Munich to San Jose flights
Frankfurt to San Diego flights
Munich to Long Beach flights
Munich to Burbank flights
Munich to Ontario flights
Munich to Santa Ana flights
Stuttgart to Santa Ana flights
Stuttgart to Los Angeles flights
Stuttgart to San Francisco flights
Frankfurt to San Luis Obispo flights
Frankfurt to Sacramento flights
Frankfurt to Reno flights
Munich to Sacramento flights
Stuttgart to Long Beach flights
Stuttgart to San Diego flights
Stuttgart to Oakland flights
Frankfurt to Palm Springs flights
Stuttgart to San Jose flights
Munich to San Luis Obispo flights
Stuttgart to Sacramento flights
Friedrichshafen to Los Angeles flights
Munich to Reno flights
Frankfurt to Monterey flights
Frankfurt to Medford flights
Frankfurt to Fresno flights
Karlsruhe to Los Angeles flights
Friedrichshafen to San Diego flights
Munich to Palm Springs flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.