Flights from Ontario/LA, CA to Phoenix, AZ

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

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Sep 2026
No results for this month.
Oct 2026
from$56*
Last seen: 4 hours ago
One-way/Economy
Nov 2026
from$56*
Last seen: 7 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $56
cmp-daily-histogram-bars-legend-max-price-aria-label $189
Displaying fares for September-2026
  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

    SEP

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    30

    Wed

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

    Thu

    OCT

  • ONT–PHX, Oct 2, 2026: from $189
    02

    Fri

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    03

    Sat

  • ONT–PHX, Oct 4, 2026: from $189
    04

    Sun

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    05

    Mon

  • ONT–PHX, Oct 6, 2026: from $183
    06

    Tue

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    07

    Wed

  • ONT–PHX, Oct 8, 2026: from $180
    08

    Thu

  • ONT–PHX, Oct 9, 2026: from $189
    09

    Fri

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    10

    Sat

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

  • ONT–PHX, Oct 12, 2026: from $176
    12

    Mon

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    13

    Tue

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    14

    Wed

  • ONT–PHX, Oct 15, 2026: from $182
    15

    Thu

  • ONT–PHX, Oct 16, 2026: from $176
    16

    Fri

  • ONT–PHX, Oct 17, 2026: from $176
    17

    Sat

  • ONT–PHX, Oct 18, 2026: from $182
    18

    Sun

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    19

    Mon

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

    Tue

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    21

    Wed

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    22

    Thu

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    23

    Fri

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    24

    Sat

  • ONT–PHX, Oct 25, 2026: from $56
    25

    Sun

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    26

    Mon

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    27

    Tue

  • ONT–PHX: cmp-view-offers-disclaimer. Find Offers
    28

    Wed

    • Range$56-$189

    *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 Ontario/LA, CA to Phoenix, AZ on Frontier

    $
    *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®.

    Ontario/LA, CA Phoenix, AZ

    Barclays Badge

    Earn up to 60,000 Miles after qualifying activity. Terms apply.