Flights from Atlanta, GA to Ontario/LA, CA

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Best Deals on Flights From Atlanta, GA (ATL) to Ontario/LA, CA (ONT)

Sep 2026
from$254*
Last seen: 18 hours ago
One-way/Economy
Oct 2026
from$80*
Last seen: 4 hours ago
One-way/Economy
Nov 2026
from$111*
Last seen: 2 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $197
cmp-daily-histogram-bars-legend-max-price-aria-label $254
Displaying fares for September-2026
  • ATL–ONT: cmp-view-offers-disclaimer. Find Offers
    23

    Wed

    SEP

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

    Thu

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    25

    Fri

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

    Sat

  • ATL–ONT, Sep 27, 2026: from $254
    27

    Sun

  • ATL–ONT, Sep 28, 2026: from $254
    28

    Mon

  • ATL–ONT, Sep 29, 2026: from $254
    29

    Tue

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

    Wed

  • ATL–ONT: cmp-view-offers-disclaimer. Find Offers
    01

    Thu

    OCT

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    02

    Fri

  • ATL–ONT, Oct 3, 2026: from $246
    03

    Sat

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    04

    Sun

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    05

    Mon

  • ATL–ONT: cmp-view-offers-disclaimer. Find Offers
    06

    Tue

  • ATL–ONT, Oct 7, 2026: from $223
    07

    Wed

  • ATL–ONT, Oct 8, 2026: from $223
    08

    Thu

  • ATL–ONT, Oct 9, 2026: from $223
    09

    Fri

  • ATL–ONT, Oct 10, 2026: from $223
    10

    Sat

  • ATL–ONT, Oct 11, 2026: from $197
    11

    Sun

  • ATL–ONT, Oct 12, 2026: from $223
    12

    Mon

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

    Tue

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

    Wed

  • ATL–ONT: cmp-view-offers-disclaimer. Find Offers
    15

    Thu

  • ATL–ONT: cmp-view-offers-disclaimer. Find Offers
    16

    Fri

  • ATL–ONT: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

  • ATL–ONT: cmp-view-offers-disclaimer. Find Offers
    18

    Sun

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

    Mon

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

    Tue

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

    Wed

  • ATL–ONT: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

    • Range$197-$254

    *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 Atlanta, GA to Ontario/LA, CA on Frontier

    $
    Flights Deals from Atlanta, GA to Ontario/LA, CA on Frontier
    From
    To
    Atlanta, GA (ATL)Ontario/LA, CA (ONT)One-way
    /
    Discount Den Basic Fare    		Departing Jan 25, 2027

    From

    $143

    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®.

    Atlanta, GA Ontario/LA, CA

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