Flights from Ontario/LA, CA to Houston, TX

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Best Deals on Flights From Ontario/LA, CA (ONT) to Houston, TX (IAH)

Aug 2026
from$174*
Last seen: 2 hours ago
One-way/Economy
Sep 2026
from$41*
Last seen: 2 hours ago
One-way/Economy
Oct 2026
from$41*
Last seen: 7 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $41
cmp-daily-histogram-bars-legend-max-price-aria-label $205
Displaying fares for August-2026
  • ONT–IAH: cmp-view-offers-disclaimer. Find Offers
    15

    Sat

    AUG

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

    Sun

  • ONT–IAH, Aug 17, 2026: from $205
    17

    Mon

  • ONT–IAH, Aug 18, 2026: from $205
    18

    Tue

  • ONT–IAH, Aug 19, 2026: from $205
    19

    Wed

  • ONT–IAH, Aug 20, 2026: from $199
    20

    Thu

  • ONT–IAH, Aug 21, 2026: from $189
    21

    Fri

  • ONT–IAH, Aug 22, 2026: from $189
    22

    Sat

  • ONT–IAH, Aug 23, 2026: from $195
    23

    Sun

  • ONT–IAH, Aug 24, 2026: from $189
    24

    Mon

  • ONT–IAH, Aug 25, 2026: from $195
    25

    Tue

  • ONT–IAH, Aug 26, 2026: from $189
    26

    Wed

  • ONT–IAH, Aug 27, 2026: from $189
    27

    Thu

  • ONT–IAH, Aug 28, 2026: from $184
    28

    Fri

  • ONT–IAH, Aug 29, 2026: from $174
    29

    Sat

  • ONT–IAH, Aug 30, 2026: from $184
    30

    Sun

  • ONT–IAH, Aug 31, 2026: from $184
    31

    Mon

  • ONT–IAH, Sep 1, 2026: from $174
    01

    Tue

    SEP

  • ONT–IAH, Sep 2, 2026: from $174
    02

    Wed

  • ONT–IAH, Sep 3, 2026: from $184
    03

    Thu

  • ONT–IAH, Sep 4, 2026: from $83
    04

    Fri

  • ONT–IAH, Sep 5, 2026: from $77
    05

    Sat

  • ONT–IAH, Sep 6, 2026: from $172
    06

    Sun

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

    Mon

  • ONT–IAH, Sep 8, 2026: from $83
    08

    Tue

  • ONT–IAH: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • ONT–IAH, Sep 10, 2026: from $72
    10

    Thu

  • ONT–IAH, Sep 11, 2026: from $83
    11

    Fri

  • ONT–IAH, Sep 12, 2026: from $77
    12

    Sat

  • ONT–IAH, Sep 13, 2026: from $172
    13

    Sun

  • ONT–IAH, Sep 14, 2026: from $41
    14

    Mon

    • Range$41-$205

    *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 Houston, TX on Frontier

    $
    Flights Deals from Ontario/LA, CA to Houston, TX on Frontier
    From
    To
    Ontario/LA, CA (ONT)Houston, TX (IAH)One-way
    /
    Discount Den Basic Fare    		Departing Nov 19, 2026

    From

    $112

    Last seen: 20 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®.

    Ontario/LA, CA Houston, TX

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