Flights from Ontario/LA, CA to Las Vegas, NV

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Best Deals on Flights From Ontario/LA, CA (ONT) to Las Vegas, NV (LAS)

Oct 2026
from$110*
Last seen: 3 hours ago
One-way/Economy
Nov 2026
from$19*
Last seen: 17 hours ago
One-way/Economy
Dec 2026
from$19*
Last seen: 21 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $19
cmp-daily-histogram-bars-legend-max-price-aria-label $136
Displaying fares for October-2026
  • ONT–LAS: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

    OCT

  • ONT–LAS: cmp-view-offers-disclaimer. Find Offers
    23

    Fri

  • ONT–LAS, Oct 24, 2026: from $126
    24

    Sat

  • ONT–LAS, Oct 25, 2026: from $136
    25

    Sun

  • ONT–LAS, Oct 26, 2026: from $136
    26

    Mon

  • ONT–LAS, Oct 27, 2026: from $126
    27

    Tue

  • ONT–LAS, Oct 28, 2026: from $110
    28

    Wed

  • ONT–LAS, Oct 29, 2026: from $120
    29

    Thu

  • ONT–LAS, Oct 30, 2026: from $120
    30

    Fri

  • ONT–LAS, Oct 31, 2026: from $110
    31

    Sat

  • ONT–LAS, Nov 1, 2026: from $120
    01

    Sun

    NOV

  • ONT–LAS, Nov 2, 2026: from $120
    02

    Mon

  • ONT–LAS, Nov 3, 2026: from $110
    03

    Tue

  • ONT–LAS, Nov 4, 2026: from $28
    04

    Wed

  • ONT–LAS, Nov 5, 2026: from $63
    05

    Thu

  • ONT–LAS, Nov 6, 2026: from $63
    06

    Fri

  • ONT–LAS, Nov 7, 2026: from $53
    07

    Sat

  • ONT–LAS, Nov 8, 2026: from $63
    08

    Sun

  • ONT–LAS, Nov 9, 2026: from $44
    09

    Mon

  • ONT–LAS, Nov 10, 2026: from $36
    10

    Tue

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

    Wed

  • ONT–LAS, Nov 12, 2026: from $28
    12

    Thu

  • ONT–LAS, Nov 13, 2026: from $28
    13

    Fri

  • ONT–LAS, Nov 14, 2026: from $19
    14

    Sat

  • ONT–LAS, Nov 15, 2026: from $28
    15

    Sun

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

    Mon

  • ONT–LAS, Nov 17, 2026: from $19
    17

    Tue

  • ONT–LAS, Nov 18, 2026: from $19
    18

    Wed

  • ONT–LAS, Nov 19, 2026: from $58
    19

    Thu

  • ONT–LAS, Nov 20, 2026: from $92
    20

    Fri

  • ONT–LAS, Nov 21, 2026: from $19
    21

    Sat

    • Range$19-$136

    *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 Las Vegas, NV 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 Las Vegas, NV

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