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St Louis to Ontario Flights

Age of children at time of trip

We will search for applicable airfare discounts. Must have 1 adult for each infant in lap

Selected fares from St Louis to Ontario

Departure Arrival Travel dates Round-trip
STL ONT Tue, Jan 20 - Wed, Jan 21 $331
STL ONT Tue, Jan 20 - Wed, Jan 21 $331
STL ONT Wed, Jan 7 - Tue, Jan 13 $468

St Louis and Ontario airports and terminals

Airports in St Louis MO, US
map of airports in St Louis
  • 1

    St Louis Airport (STL)

    Distance from City Center: 12.5 miles

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Airports in Ontario CA, US
map of airports in Ontario
  • 1

    Ontario International Airport (ONT)

    Distance from City Center: 0.9 miles

  • 2

    Long Beach Municipal (LGB)

    Distance from City Center: 34.9 miles

  • 3

    Bob Hope (BUR)

    Distance from City Center: 43.6 miles

  • 4

    John Wayne Airport (SNA)

    Distance from City Center: 30.6 miles

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Sun Mon Tue Wed Thu Fri Sat
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$331
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18 19 20
$331
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Highlighted price = Cheapest round-trip flights

Prices are round trip per person (conditions apply)

Featured Ontario Airport Hotels

Hotel only $68

Radisson Hotel Ontario Airport

3 stars
3.9 / 5 44 reviews

2200 EAST HOLT BOULEVARD Map

Save 30% on your stay

The Radisson Ontario Airport, just 1.6 miles from the Ontario International Airport, offers complimentary airport shuttle service to get your business trip or vacation off to the perfect start.... More

Hotel only $101

Holiday Inn ONTARIO AIRPORT

3 stars
4.3 / 5 61 reviews

2155 E. Convention Center Way Map

...Ontario International Airport (0.8 mi/2 km) Ontario Convention Center (0.2 mi/0.4 km).... Executive suites available Centrally located Ontario hotel close to the airport and shopping... More

Hotel only $105

Fairfield Inn by Marriott Ontario

3 stars
3.8 / 5 46 reviews

3201 East Centrelake Drive Map

Cozy, economical hotel close to Ontario airport and major attractions Fairfield Inn by Marriott Ontario offers a comfortable, tranquil guest experience, just minutes away from Ontario... More

Hotel only $132

Residence Inn by Marriott Ontario Airport

3 stars
4.0 / 5 25 reviews

2025 Convention Center Way Map

...The Residence Inn by Marriott Ontario Airport hotel offers 200 apartment-style suites with fully equipped kitchens.... The Residence Inn Ontario Airport hotel is less than a mile from the... More

Hotel only $92

Ayres Hotel & Suites Ontario Airport

3 stars
4.2 / 5 23 reviews

1945 Holt Blvd. Map

A Flurry of Savings – Save 20% on Your Stay

...Located 1/2 mile NW of The Ontario International Airport.... More

Hotel only $75

Red Lion Hotel Ontario Airport

2 stars
4.2 / 5 56 reviews

204 North Vineyard Map

Free Breakfast

The Red Lion Hotel Ontario Airport is conveniently located 1.5 miles from Ontario International Airport and next to the Ontario Convention Center.... More

January

Cheapest weekend flights in January from St Louis to Ontario

Travel dates Departure Arrival Stops: Round-trip
Leave Fri, Jan 16 St Louis (STL) Ontario (ONT) US Airways $397
Earn $3.97
Return Sun, Jan 18 Ontario (ONT) St Louis (STL) US Airways

Lowest roundtrip airfare in January from St Louis to Ontario

Travel dates Departure Arrival Stops: Round-trip
Leave Tue, Jan 20 St Louis (STL) Ontario (ONT) American Airlines $331
Earn $3.31
Return Sat, Jan 31 Ontario (ONT) St Louis (STL) American Airlines
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February

Cheapest weekend flights in February from St Louis to Ontario

Travel dates Departure Arrival Stops: Round-trip
Leave Thu, Feb 12 St Louis (STL) Ontario (ONT) American Airlines $417
Earn $4.17
Return Sun, Feb 15 Ontario (ONT) St Louis (STL) American Airlines

Lowest roundtrip airfare in February from St Louis to Ontario

Travel dates Departure Arrival Stops: Round-trip
Leave Thu, Feb 12 St Louis (STL) Ontario (ONT) American Airlines $417
Earn $4.17
Return Sun, Feb 15 Ontario (ONT) St Louis (STL) American Airlines
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March

Lowest roundtrip airfare in March from St Louis to Ontario

Travel dates Departure Arrival Stops: Round-trip
Leave Thu, Mar 5 St Louis (STL) Ontario (ONT) US Airways $379
Earn $3.79
Return Tue, Mar 10 Ontario (ONT) St Louis (STL) US Airways

Best one-week trip in March from St Louis to Ontario

Travel dates Departure Arrival Stops: Round-trip
Leave Wed, Mar 4 St Louis (STL) Ontario (ONT) American Airlines $409
Earn $4.09
Return Wed, Mar 11 Ontario (ONT) St Louis (STL) American Airlines
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Flights to Ontario

Lambert-St. Louis International Airport

Planning a trip on a budget can often be a challenge. Orbitz.com allows travelers to search many different airlines at once to find cheap flights from St. Louis, Missouri. The Lambert-St. Louis International Airport is located 15 miles northwest of downtown on Airflight Drive. Thirteen airlines provide services to the airport, including US Airways, United Airlines, Delta and American Airlines.

Parking at the Airport

Parking at the Lambert-St. Louis International Airport is provided by Super Park. Both long-term and short-term parking are available. Shuttle services are available 24 hours a day to and from the parking areas to the main terminal. Super Park ensures the closest parking available, and in many cases, parking is within walking distance to the terminal. Fees are charged by the hour or by the day with discounts for weekly parking.

Transportation to the Airport

Go Best Express Airport Shuttle offers shared shuttle rides to and from all downtown hotels and businesses in St. Louis. Shuttles are available every 15 to 30 minutes all day, and reservations are recommended. The MetroLink has 37 stations that provide service to and from the airport. The Link is available for a flat fee. The Metropolitan Taxicab Commission services the Lambert-St. Louis International Airport, and it provides metered transportation in and around St. Louis. Exact fares depend on the destination, and taxis require an additional $3 airport fee. Limos are available for rent by the day or by the hour, and many local hotels provide complimentary shuttles to and from the airport for their guests. Orbitz.com can assist travelers in locating cheap car rental agencies in the area.

Dining Options at Lambert-St. Louis International Airport

The Lambert-St. Louis International Airport offers many excellent food options for those who want to eat before their flight. The Great American Bagel Company offers many bagel varieties, as well as fresh coffee and juice. Starbucks is available at the Lambert's East Terminal and has a selection of blended coffees and bakery items. For travelers who prefer a sit-down meal before reaching the airport, Half and Half is located near the airport in St. Louis and offers eggs, toast, bacon and fresh donuts. For individuals looking for travel deals, Orbitz.com can provide assistance in locating cheap flights from St. Louis.

Flying Into Ontario International Airport

Flights into Ontario International Airport are for passengers destined for the Inland Empire region of California. Located 35 miles from downtown Los Angeles on East Airport Drive, the airport is actually a part of the LAX system. A medium-sized hub, the airport has the capabilities to service a full slate of commercial flights. Airlines found within the terminals include international carriers Aero Mexico as well as popular domestic carriers like United, Southwest, Delta and American Airlines. Seven airlines service LA/Ontario International, and they operate more than 114 flights each day.

Finding Transportation From the Airport

There are several ways to get to the many cities throughout the Inland Empire region. Hotels in and around Ontario offer hotel shuttles, free of charge, that run from the terminal to the hotel lobby. You can take a taxi to downtown Ontario for a little more than $10 or go all the way to downtown Los Angeles for around $100. Private shuttles are also available and will cost about the same fees. Private shuttles, however, must be reserved. Rental cars are also available. With Orbitz.com, you can buy tickets and reserve a rental car at the same time.

What to Expect From the Weather

The weather is always sunny. The temperatures rarely dip below 70 degrees Fahrenheit and are usually below 90 degrees Fahrenheit. Temperatures in July and August may exceed this range, but never stick around for long. Don't expect the threat of rain to ruin your plans or dictate the calendar when booking tickets on Orbitz.com.

Ontario's Offerings for Visitors

When in Ontario, check out the outdoors in Cucamonga-Guasti Regional Park. You can also take in a concert at the Ontario Convention center or have a cultural experience at the Museum of History and Art, Ontario. Don't just race through the city on your way to Los Angeles or the surrounding cities. Booking bargain flights to Ontario with Orbitz.com will save you some major cash, so spend it exploring what the city has to offer.

Flight schedule for flights from St Louis to Ontario on Tue, Dec 23, 2014

Carrier Flight # Departing Arriving Aircraft Flight time
Airport Time Airport Time
United Airlines/United Airlines UA5284/UA6422 STL 5:45 AM ONT 10:45 AM ER4/CR7 7hr 0min
American Airlines/American Airlines AA506/AA647 STL 7:30 AM ONT 11:34 AM 319/320 6hr 4min
American Airlines/US Airways AA506/US647 STL 7:30 AM ONT 11:34 AM 319/320 6hr 4min
US Airways/American Airlines US506/AA647 STL 7:30 AM ONT 11:34 AM 319/320 6hr 4min
US Airways/US Airways US506/US647 STL 7:30 AM ONT 11:34 AM 319/320 6hr 4min
American Airlines/American Airlines AA375/AA29 STL 6:05 AM ONT 11:45 AM M80/M80 7hr 40min
American Airlines/US Airways AA375/US29 STL 6:05 AM ONT 11:45 AM M80/M80 7hr 40min
US Airways/American Airlines US375/AA29 STL 6:05 AM ONT 11:45 AM M80/M80 7hr 40min
US Airways/US Airways US375/US29 STL 6:05 AM ONT 11:45 AM M80/M80 7hr 40min
United Airlines/United Airlines UA3683/UA6281 STL 7:49 AM ONT 12:51 PM CR7/CR7 7hr 2min
American Airlines/American Airlines AA1141/AA1095 STL 8:00 AM ONT 2:10 PM M80/M80 8hr 10min
American Airlines/US Airways AA1141/US1095 STL 8:00 AM ONT 2:10 PM M80/M80 8hr 10min
American Airlines/American Airlines AA323/AA1095 STL 9:00 AM ONT 2:10 PM M80/M80 7hr 10min