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Flights from Kansas City to Ontario
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Find Kansas City to Ontario flights starting at €44.

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip
      • MCI19:45
        5h 54m
        1 stop
        ONT23:39
        Tue, Dec 17|Kansas City - Ontario|Frontier Airlines
        €44€113
        61% OFF
        61% OFF
        €113€44

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Tue, Dec 17, arriving at Ontario International Airport. One-way Prices start from €44 including taxes and charges.

      • MCI19:45
        5h 54m
        1 stop
        ONT23:39
        Wed, Dec 11|Kansas City - Ontario|Frontier Airlines
        €52€113
        54% OFF
        54% OFF
        €113€52

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Wed, Dec 11, arriving at Ontario International Airport. One-way Prices start from €52 including taxes and charges.

      • MCI19:45
        18h 47m
        1 stop
        ONT12:32
        Mon, Dec 9|Kansas City - Ontario|Frontier Airlines
        €59€113
        48% OFF
        48% OFF
        €113€59

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Mon, Dec 9, arriving at Ontario International Airport. One-way Prices start from €59 including taxes and charges.

      • MCI14:03
        11h 41m
        1 stop
        ONT23:44
        Tue, Dec 3|Kansas City - Ontario|Frontier Airlines
        €62
        €62

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Tue, Dec 3, arriving at Ontario International Airport. One-way Prices start from €62 including taxes and charges.

      • MCI19:45
        25h 52m
        1 stop
        ONT19:37
        Tue, Jan 7|Kansas City - Ontario|Frontier Airlines
        €62
        €62

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Tue, Jan 7, arriving at Ontario International Airport. One-way Prices start from €62 including taxes and charges.

      • MCI19:45
        5h 54m
        1 stop
        ONT23:39
        Fri, Dec 13|Kansas City - Ontario|Frontier Airlines
        €68
        €68

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Fri, Dec 13, arriving at Ontario International Airport. One-way Prices start from €68 including taxes and charges.

      • MCI20:28
        5h 31m
        1 stop
        ONT23:59
        Sun, Jan 5|Kansas City - Ontario|Frontier Airlines
        €70
        €70

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Sun, Jan 5, arriving at Ontario International Airport. One-way Prices start from €70 including taxes and charges.

      • MCI18:25
        19h 7m
        1 stop
        ONT11:32
        Mon, Dec 16|Kansas City - Ontario|Frontier Airlines
        €74
        €74

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Mon, Dec 16, arriving at Ontario International Airport. One-way Prices start from €74 including taxes and charges.

      • MCI14:38
        11h 21m
        1 stop
        ONT23:59
        Mon, Jan 6|Kansas City - Ontario|Frontier Airlines
        €77
        €77

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Mon, Jan 6, arriving at Ontario International Airport. One-way Prices start from €77 including taxes and charges.

      • MCI19:45
        5h 54m
        1 stop
        ONT23:39
        Sun, Jan 12|Kansas City - Ontario|Frontier Airlines
        €86
        €86

        Choose Frontier Airlines flights from Kansas City to Ontario. The one-way connecting flight with Frontier Airlines departs from Kansas City International Airport on Sun, Jan 12, arriving at Ontario International Airport. One-way Prices start from €86 including taxes and charges.

      • MKC13:00
        3h 5m
        Nonstop
        ONT14:00
        Tue, Dec 3|Kansas City - Ontario|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.

When is the cheapest time to fly from Kansas City to Ontario?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Find Cheapest Airlines Flying from Kansas City to Ontario

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From €44
Alaska Airlines
From €105
United Airlines
From €106
Delta Air Lines
From €109
Spirit Airlines
From €111
Southwest Airlines
From €134
American Airlines
From €143

Find more flights and airlines

Alternative Routes for Kansas City to Ontario Flights

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Kansas City to Ontario.

  • Cheapest
    Frontier Airlines
    MCI
    19:45
    5h 54m
    1 transfer
    ONT
    23:39
    Kansas City International Airport - Ontario International Airport
    Tue, Dec 17Frontier Airlines
    €44
  • Frontier Airlines
    MCI
    19:45
    5h 54m
    1 transfer
    ONT
    23:39
    Kansas City International Airport - Ontario International Airport
    Tue, Dec 17Frontier Airlines
    €44
    Find More Flights

FAQ

  • When are flight tickets from Kansas City (MKC) to Ontario (ONT) the cheapest?

    Airlines adjust prices for flights from Kansas City to Ontario based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much are flights from Kansas City (MKC) to Ontario (ONT) cost?

    According to Trip.com's data, the lowest price is around €273.

  • What's the most popular airline for direct flights from Kansas City (MKC) to Ontario (ONT)?

    Spirit Airlines operates 2 direct flights from Kansas City (MKC) to Ontario (ONT).

How to find a cheap flight from Kansas City to Ontario

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Kansas City to Ontario. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information for Kansas City to Ontario Flights

Cheapest direct flight price€43
Cheapest return ticket price€192
Off-season travel monthJanuary
Peak season for travelNovember
Flight distance10,402.79km
Popular airlineAlaska Airlines

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