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Ontario International Airport to Chicago flight
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Cheap Flights from Ontario International Airport to Chicago

Search for flights from Ontario International Airport to Chicago and check out affordable one-way and round-trip options.

  • One way
  • Round-trip
sortSort by: Lowest Price
  • Sort by: Lowest Price
  • Sort by: Earliest Flight
      • ONT00:59
        8h 10m
        1 stop
        MDW11:09
        Ontario - Chicago|Wed, May 29|Frontier Airlines
        $39$57
        32% OFF
        32% OFF
        $57$39
      • ONT00:59
        8h 39m
        1 stop
        MDW11:38
        Ontario - Chicago|Wed, May 8|Frontier Airlines
        $40$57
        30% OFF
        30% OFF
        $57$40
      • ONT00:59
        8h 10m
        1 stop
        MDW11:09
        Ontario - Chicago|Wed, May 22|Frontier Airlines
        $42$57
        25% OFF
        25% OFF
        $57$42
      • ONT00:59
        8h 39m
        1 stop
        MDW11:38
        Ontario - Chicago|Tue, May 14|Frontier Airlines
        $42
        $42
      • ONT00:59
        8h 39m
        1 stop
        MDW11:38
        Ontario - Chicago|Wed, May 15|Frontier Airlines
        $42
        $42
      • ONT00:55
        22h 1m
        1 stop
        ORD00:56
        Ontario - Chicago|Sat, May 4|Frontier Airlines
        $44
        $44
      • ONT22:10
        5h 40m
        1 stop
        MDW05:50
        Ontario - Chicago|Sat, May 18|Frontier Airlines
        $45
        $45
      • ONT00:55
        22h 1m
        1 stop
        ORD00:56
        Ontario - Chicago|Sat, May 11|Frontier Airlines
        $45
        $45
      • ONT00:59
        8h 39m
        1 stop
        MDW11:38
        Ontario - Chicago|Tue, May 7|Frontier Airlines
        $46
        $46
      • ONT14:25
        18h 44m
        1 stop
        MDW11:09
        Ontario - Chicago|Tue, May 21|Frontier Airlines
        $48
        $48
      • ONT13:00
        3h 5m
        Direct
        CHI14:00
        Los Angeles - Chicago|Wed, May 8|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from Ontario International Airport to Chicago

See which airlines fly from Ontario International Airport to Chicago. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Frontier Airlines
From $39
Alaska Airlines
From $97
Delta Air Lines
From $102
United Airlines
From $124
Southwest Airlines
From $154
American Airlines
From $162
Jetblue Airways
From $355
ANA airlines
Find more flights and airlines

Flight Info of Flights from Ontario International Airport to Chicago

Cheapest round-trip ticket price

$95

Cheapest nonstop flight price

$37

Off-season for travel

March

Peak season for travel

October

FAQs for Ontario International Airport to Chicago Flights

  • What is the transportation method from the main airport to downtown in Chicago?

    • The distance from O'Hare International Airport to downtown is about 25km. It takes about 40 minutes by taxi.
    • The distance from Midway International Airport to downtown is about 14km. It takes about 30 minutes by taxi.

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