Flights from Phoenix, AZ to Ontario/LA, CA

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Best Deals on Flights From Phoenix, AZ (PHX) to Ontario/LA, CA (ONT)

Sep 2026
from$189*
Last seen: 56 mins ago
One-way/Economy
Oct 2026
from$64*
Last seen: 3 hours ago
One-way/Economy
Nov 2026
from$58*
Last seen: 13 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $64
cmp-daily-histogram-bars-legend-max-price-aria-label $195
Displaying fares for September-2026
  • PHX–ONT: cmp-view-offers-disclaimer. Find Offers
    23

    Wed

    SEP

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    24

    Thu

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    25

    Fri

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    26

    Sat

  • PHX–ONT, Sep 27, 2026: from $189
    27

    Sun

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    28

    Mon

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    29

    Tue

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    30

    Wed

  • PHX–ONT, Oct 1, 2026: from $189
    01

    Thu

    OCT

  • PHX–ONT, Oct 2, 2026: from $195
    02

    Fri

  • PHX–ONT, Oct 3, 2026: from $189
    03

    Sat

  • PHX–ONT, Oct 4, 2026: from $195
    04

    Sun

  • PHX–ONT, Oct 5, 2026: from $177
    05

    Mon

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    06

    Tue

  • PHX–ONT, Oct 7, 2026: from $176
    07

    Wed

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    08

    Thu

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    09

    Fri

  • PHX–ONT, Oct 10, 2026: from $182
    10

    Sat

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    11

    Sun

  • PHX–ONT, Oct 12, 2026: from $91
    12

    Mon

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    13

    Tue

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    14

    Wed

  • PHX–ONT, Oct 15, 2026: from $64
    15

    Thu

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    16

    Fri

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    17

    Sat

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    18

    Sun

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    19

    Mon

  • PHX–ONT: cmp-view-offers-disclaimer. Find Offers
    20

    Tue

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    21

    Wed

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    22

    Thu

    • Range$64-$195

    *Prices found by others in the previous 48 hours for round-trip flights. Prices shown may also require membership in our travel club, Discount Den.

    Flights Deals from Phoenix, AZ to Ontario/LA, CA on Frontier

    $
    Flights Deals from Phoenix, AZ to Ontario/LA, CA on Frontier
    From
    To
    Phoenix, AZ (PHX)Ontario/LA, CA (ONT)One-way
    /
    Discount Den Basic Fare    		Departing Mar 2, 2027

    From

    $81

    Last seen: 12 hours ago

    *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den®.

    Phoenix, AZ Ontario/LA, CA

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