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Route overview: Portland to Ontario (ONT) flight deals

Portland → Ontario

Dec 13, 2026 · choose your return date

PDX → ONT1 adulteconomyOne way and round trips

30 flight options · 4 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

December 2026

Dec 13, 2026 · One wayFrontier AirlinesUp to 1 stop each way$109.00 Dec 13, 2026 · One waySouthwest AirlinesUp to 1 stop each way$149.00 Dec 13, 2026 – Dec 14, 2026 · 1 nightFrontier AirlinesUp to 1 stop each way$178.00 Dec 13, 2026 – Dec 14, 2026 · 1 nightAlaska AirlinesUp to 1 stop each way$268.00 Dec 13, 2026 – Dec 15, 2026 · 2 nightsFrontier AirlinesUp to 1 stop each way$178.00 Dec 13, 2026 – Dec 15, 2026 · 2 nightsAlaska AirlinesUp to 1 stop each way$268.00 Dec 13, 2026 – Dec 16, 2026 · 3 nightsFrontier AirlinesUp to 1 stop each way$178.00 Dec 13, 2026 – Dec 16, 2026 · 3 nightsAlaska AirlinesUp to 1 stop each way$268.00 Dec 13, 2026 – Dec 17, 2026 · 4 nightsFrontier AirlinesUp to 1 stop each way$178.00 Dec 13, 2026 – Dec 17, 2026 · 4 nightsAlaska AirlinesUp to 1 stop each way$268.00 Dec 13, 2026 – Dec 18, 2026 · 5 nightsFrontier AirlinesUp to 1 stop each way$178.00 Dec 13, 2026 – Dec 18, 2026 · 5 nightsAlaska AirlinesUp to 1 stop each way$268.00 Dec 13, 2026 – Dec 19, 2026 · 6 nightsFrontier AirlinesUp to 1 stop each way$200.20 Dec 13, 2026 – Dec 19, 2026 · 6 nightsAlaska AirlinesUp to 1 stop each way$306.70 Dec 13, 2026 – Dec 20, 2026 · 7 nightsFrontier AirlinesUp to 1 stop each way$200.20 Dec 13, 2026 – Dec 20, 2026 · 7 nightsAmerican Airlines / Frontier AirlinesUp to 1 stop each way$245.20 Dec 13, 2026 – Dec 21, 2026 · 8 nightsFrontier AirlinesUp to 1 stop each way$200.20 Dec 13, 2026 – Dec 21, 2026 · 8 nightsAlaska AirlinesUp to 1 stop each way$306.70 Dec 13, 2026 – Dec 22, 2026 · 9 nightsFrontier AirlinesUp to 1 stop each way$200.20 Dec 13, 2026 – Dec 22, 2026 · 9 nightsAlaska AirlinesUp to 1 stop each way$306.70 Dec 13, 2026 – Dec 23, 2026 · 10 nightsFrontier AirlinesUp to 1 stop each way$200.20 Dec 13, 2026 – Dec 23, 2026 · 10 nightsAlaska AirlinesUp to 1 stop each way$306.70 Dec 13, 2026 – Dec 24, 2026 · 11 nightsFrontier AirlinesUp to 1 stop each way$200.20 Dec 13, 2026 – Dec 24, 2026 · 11 nightsAlaska AirlinesUp to 1 stop each way$306.70 Dec 13, 2026 – Dec 25, 2026 · 12 nightsFrontier AirlinesUp to 1 stop each way$200.20 Dec 13, 2026 – Dec 25, 2026 · 12 nightsAlaska AirlinesUp to 1 stop each way$306.70 Dec 13, 2026 – Dec 26, 2026 · 13 nightsFrontier AirlinesUp to 1 stop each way$200.20 Dec 13, 2026 – Dec 26, 2026 · 13 nightsAlaska AirlinesUp to 1 stop each way$306.70 Dec 13, 2026 – Dec 27, 2026 · 14 nightsFrontier AirlinesUp to 1 stop each way$200.20 Dec 13, 2026 – Dec 27, 2026 · 14 nightsAmerican Airlines / Frontier AirlinesUp to 1 stop each way$245.20

Flights for your trip

  1. Sun, Dec 13 · One way

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Sun, Dec 13 · One way

    Southwest Airlines
    7:30 amPDX
    5h 10m
    SJC · 2h
    12:40 pmONT

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Sun, Dec 13 – Mon, Dec 14

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Sun, Dec 13 – Mon, Dec 14

    Alaska Airlines
    5:30 amPDX
    5h 48m
    SEA · 2h 3m
    11:18 amONT
    Alaska Airlines
    10:50 amONT
    2h 30m
    Nonstop
    1:20 pmPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Sun, Dec 13 – Tue, Dec 15

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Sun, Dec 13 – Tue, Dec 15

    Alaska Airlines
    5:30 amPDX
    5h 48m
    SEA · 2h 3m
    11:18 amONT
    Alaska Airlines
    10:50 amONT
    2h 30m
    Nonstop
    1:20 pmPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Sun, Dec 13 – Wed, Dec 16

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Sun, Dec 13 – Wed, Dec 16

    Alaska Airlines
    5:30 amPDX
    5h 48m
    SEA · 2h 3m
    11:18 amONT
    Alaska Airlines
    10:50 amONT
    2h 30m
    Nonstop
    1:20 pmPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Sun, Dec 13 – Thu, Dec 17

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Sun, Dec 13 – Thu, Dec 17

    Alaska Airlines
    5:30 amPDX
    5h 48m
    SEA · 2h 3m
    11:18 amONT
    Alaska Airlines
    10:50 amONT
    2h 30m
    Nonstop
    1:20 pmPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Sun, Dec 13 – Sat, Dec 19

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Sun, Dec 13 – Sat, Dec 19

    Alaska Airlines
    5:30 amPDX
    5h 48m
    SEA · 2h 3m
    11:18 amONT
    Alaska Airlines
    10:50 amONT
    2h 30m
    Nonstop
    1:20 pmPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Sun, Dec 13 – Sun, Dec 20

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  14. Sun, Dec 13 – Sun, Dec 20

    American Airlines
    2:04 pmPDX
    5h 17m
    PHX · 1h 20m
    7:21 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  15. Sun, Dec 13 – Mon, Dec 21

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  16. Sun, Dec 13 – Mon, Dec 21

    Alaska Airlines
    5:30 amPDX
    5h 48m
    SEA · 2h 3m
    11:18 amONT
    Alaska Airlines
    10:50 amONT
    2h 30m
    Nonstop
    1:20 pmPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Sun, Dec 13 – Wed, Dec 23

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  18. Sun, Dec 13 – Wed, Dec 23

    Alaska Airlines
    5:30 amPDX
    5h 48m
    SEA · 2h 3m
    11:18 amONT
    Alaska Airlines
    10:50 amONT
    2h 30m
    Nonstop
    1:20 pmPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Sun, Dec 13 – Thu, Dec 24

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  20. Sun, Dec 13 – Thu, Dec 24

    Alaska Airlines
    5:30 amPDX
    5h 48m
    SEA · 2h 3m
    11:18 amONT
    Alaska Airlines
    10:50 amONT
    2h 30m
    Nonstop
    1:20 pmPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Sun, Dec 13 – Fri, Dec 25

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  22. Sun, Dec 13 – Fri, Dec 25

    Alaska Airlines
    5:30 amPDX
    5h 48m
    SEA · 2h 3m
    11:18 amONT
    Alaska Airlines
    10:50 amONT
    2h 30m
    Nonstop
    1:20 pmPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Sun, Dec 13 – Sun, Dec 27

    Frontier Airlines
    12:51 pmPDX
    5h 40m
    LAS · 2h 21m
    6:31 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  24. Sun, Dec 13 – Sun, Dec 27

    American Airlines
    2:04 pmPDX
    5h 17m
    PHX · 1h 20m
    7:21 pmONT
    Frontier Airlines
    9:25 amONT
    2h 32m
    Nonstop
    11:57 amPDX

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

PDX ⇄ ONT

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Explore this route

All dates for this routeDec 12, 2026 · Return optionsDec 14, 2026 · Return options
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-13 · one wayFrontier AirlinesF91106 + F91923Axel-exclusive $109.002026-10-29T01:55:18Z
2026-12-13 · one waySouthwest AirlinesWN510 + WN1383Axel-exclusive $149.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-14Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $178.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-14Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $268.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-15Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $178.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-15Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $268.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-16Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $178.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-16Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $268.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-17Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $178.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-17Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $268.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-18Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $178.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-18Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $268.002026-10-29T01:55:18Z
2026-12-13 → 2026-12-19Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $200.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-19Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $306.702026-10-29T01:55:18Z
2026-12-13 → 2026-12-20Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $200.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-20American Airlines / Frontier AirlinesAA2660 + AA1666 / F92913Axel-exclusive $245.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-21Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $200.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-21Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $306.702026-10-29T01:55:18Z
2026-12-13 → 2026-12-22Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $200.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-22Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $306.702026-10-29T01:55:18Z
2026-12-13 → 2026-12-23Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $200.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-23Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $306.702026-10-29T01:55:18Z
2026-12-13 → 2026-12-24Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $200.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-24Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $306.702026-10-29T01:55:18Z
2026-12-13 → 2026-12-25Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $200.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-25Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $306.702026-10-29T01:55:18Z
2026-12-13 → 2026-12-26Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $200.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-26Alaska AirlinesAS427 + AS575 / AS2044Axel-exclusive $306.702026-10-29T01:55:18Z
2026-12-13 → 2026-12-27Frontier AirlinesF91106 + F91923 / F92913Axel-exclusive $200.202026-10-29T01:55:18Z
2026-12-13 → 2026-12-27American Airlines / Frontier AirlinesAA2660 + AA1666 / F92913Axel-exclusive $245.202026-10-29T01:55:18Z

Route overview: Portland to Ontario (ONT) flight deals

2026-12-13 · one way · Axel-exclusive $109.00

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.

2026-12-13 · one way · Axel-exclusive $149.00

  • Southwest Airlines WN510 / WN1383: PDX 2026-12-13 07:30:00 → ONT 2026-12-13 12:40:00; 1 stop(s) via SJC; 310 minutes. Local airport times.
    • WN510: PDX 2026-12-13 07:30:00 → SJC 2026-12-13 09:20:00; layover at SJC: 120 minutes.
    • WN1383: SJC 2026-12-13 11:20:00 → ONT 2026-12-13 12:40:00.

2026-12-13 → 2026-12-14 · Axel-exclusive $178.00

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-14 09:25:00 → PDX 2026-12-14 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-14 · Axel-exclusive $268.00

  • Alaska Airlines AS427 / AS575: PDX 2026-12-13 05:30:00 → ONT 2026-12-13 11:18:00; 1 stop(s) via SEA; 348 minutes. Local airport times.
    • AS427: PDX 2026-12-13 05:30:00 → SEA 2026-12-13 06:31:00; layover at SEA: 123 minutes.
    • AS575: SEA 2026-12-13 08:34:00 → ONT 2026-12-13 11:18:00.
  • Alaska Airlines AS2044: ONT 2026-12-14 10:50:00 → PDX 2026-12-14 13:20:00; nonstop; 150 minutes. Local airport times.

2026-12-13 → 2026-12-15 · Axel-exclusive $178.00

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-15 09:25:00 → PDX 2026-12-15 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-15 · Axel-exclusive $268.00

  • Alaska Airlines AS427 / AS575: PDX 2026-12-13 05:30:00 → ONT 2026-12-13 11:18:00; 1 stop(s) via SEA; 348 minutes. Local airport times.
    • AS427: PDX 2026-12-13 05:30:00 → SEA 2026-12-13 06:31:00; layover at SEA: 123 minutes.
    • AS575: SEA 2026-12-13 08:34:00 → ONT 2026-12-13 11:18:00.
  • Alaska Airlines AS2044: ONT 2026-12-15 10:50:00 → PDX 2026-12-15 13:20:00; nonstop; 150 minutes. Local airport times.

2026-12-13 → 2026-12-16 · Axel-exclusive $178.00

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-16 09:25:00 → PDX 2026-12-16 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-16 · Axel-exclusive $268.00

  • Alaska Airlines AS427 / AS575: PDX 2026-12-13 05:30:00 → ONT 2026-12-13 11:18:00; 1 stop(s) via SEA; 348 minutes. Local airport times.
    • AS427: PDX 2026-12-13 05:30:00 → SEA 2026-12-13 06:31:00; layover at SEA: 123 minutes.
    • AS575: SEA 2026-12-13 08:34:00 → ONT 2026-12-13 11:18:00.
  • Alaska Airlines AS2044: ONT 2026-12-16 10:50:00 → PDX 2026-12-16 13:20:00; nonstop; 150 minutes. Local airport times.

2026-12-13 → 2026-12-17 · Axel-exclusive $178.00

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-17 09:25:00 → PDX 2026-12-17 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-17 · Axel-exclusive $268.00

  • Alaska Airlines AS427 / AS575: PDX 2026-12-13 05:30:00 → ONT 2026-12-13 11:18:00; 1 stop(s) via SEA; 348 minutes. Local airport times.
    • AS427: PDX 2026-12-13 05:30:00 → SEA 2026-12-13 06:31:00; layover at SEA: 123 minutes.
    • AS575: SEA 2026-12-13 08:34:00 → ONT 2026-12-13 11:18:00.
  • Alaska Airlines AS2044: ONT 2026-12-17 10:50:00 → PDX 2026-12-17 13:20:00; nonstop; 150 minutes. Local airport times.

2026-12-13 → 2026-12-19 · Axel-exclusive $200.20

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-19 09:25:00 → PDX 2026-12-19 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-19 · Axel-exclusive $306.70

  • Alaska Airlines AS427 / AS575: PDX 2026-12-13 05:30:00 → ONT 2026-12-13 11:18:00; 1 stop(s) via SEA; 348 minutes. Local airport times.
    • AS427: PDX 2026-12-13 05:30:00 → SEA 2026-12-13 06:31:00; layover at SEA: 123 minutes.
    • AS575: SEA 2026-12-13 08:34:00 → ONT 2026-12-13 11:18:00.
  • Alaska Airlines AS2044: ONT 2026-12-19 10:50:00 → PDX 2026-12-19 13:20:00; nonstop; 150 minutes. Local airport times.

2026-12-13 → 2026-12-20 · Axel-exclusive $200.20

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-20 09:25:00 → PDX 2026-12-20 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-20 · Axel-exclusive $245.20

  • American Airlines AA2660 / AA1666: PDX 2026-12-13 14:04:00 → ONT 2026-12-13 19:21:00; 1 stop(s) via PHX; 317 minutes. Local airport times.
    • AA2660: PDX 2026-12-13 14:04:00 → PHX 2026-12-13 17:38:00; layover at PHX: 80 minutes.
    • AA1666: PHX 2026-12-13 18:58:00 → ONT 2026-12-13 19:21:00.
  • Frontier Airlines F92913: ONT 2026-12-20 09:25:00 → PDX 2026-12-20 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-21 · Axel-exclusive $200.20

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-21 09:25:00 → PDX 2026-12-21 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-21 · Axel-exclusive $306.70

  • Alaska Airlines AS427 / AS575: PDX 2026-12-13 05:30:00 → ONT 2026-12-13 11:18:00; 1 stop(s) via SEA; 348 minutes. Local airport times.
    • AS427: PDX 2026-12-13 05:30:00 → SEA 2026-12-13 06:31:00; layover at SEA: 123 minutes.
    • AS575: SEA 2026-12-13 08:34:00 → ONT 2026-12-13 11:18:00.
  • Alaska Airlines AS2044: ONT 2026-12-21 10:50:00 → PDX 2026-12-21 13:20:00; nonstop; 150 minutes. Local airport times.

2026-12-13 → 2026-12-23 · Axel-exclusive $200.20

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-23 09:25:00 → PDX 2026-12-23 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-23 · Axel-exclusive $306.70

  • Alaska Airlines AS427 / AS575: PDX 2026-12-13 05:30:00 → ONT 2026-12-13 11:18:00; 1 stop(s) via SEA; 348 minutes. Local airport times.
    • AS427: PDX 2026-12-13 05:30:00 → SEA 2026-12-13 06:31:00; layover at SEA: 123 minutes.
    • AS575: SEA 2026-12-13 08:34:00 → ONT 2026-12-13 11:18:00.
  • Alaska Airlines AS2044: ONT 2026-12-23 10:50:00 → PDX 2026-12-23 13:20:00; nonstop; 150 minutes. Local airport times.

2026-12-13 → 2026-12-24 · Axel-exclusive $200.20

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-24 09:25:00 → PDX 2026-12-24 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-24 · Axel-exclusive $306.70

  • Alaska Airlines AS427 / AS575: PDX 2026-12-13 05:30:00 → ONT 2026-12-13 11:18:00; 1 stop(s) via SEA; 348 minutes. Local airport times.
    • AS427: PDX 2026-12-13 05:30:00 → SEA 2026-12-13 06:31:00; layover at SEA: 123 minutes.
    • AS575: SEA 2026-12-13 08:34:00 → ONT 2026-12-13 11:18:00.
  • Alaska Airlines AS2044: ONT 2026-12-24 10:50:00 → PDX 2026-12-24 13:20:00; nonstop; 150 minutes. Local airport times.

2026-12-13 → 2026-12-25 · Axel-exclusive $200.20

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-25 09:25:00 → PDX 2026-12-25 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-25 · Axel-exclusive $306.70

  • Alaska Airlines AS427 / AS575: PDX 2026-12-13 05:30:00 → ONT 2026-12-13 11:18:00; 1 stop(s) via SEA; 348 minutes. Local airport times.
    • AS427: PDX 2026-12-13 05:30:00 → SEA 2026-12-13 06:31:00; layover at SEA: 123 minutes.
    • AS575: SEA 2026-12-13 08:34:00 → ONT 2026-12-13 11:18:00.
  • Alaska Airlines AS2044: ONT 2026-12-25 10:50:00 → PDX 2026-12-25 13:20:00; nonstop; 150 minutes. Local airport times.

2026-12-13 → 2026-12-27 · Axel-exclusive $200.20

  • Frontier Airlines F91106 / F91923: PDX 2026-12-13 12:51:00 → ONT 2026-12-13 18:31:00; 1 stop(s) via LAS; 340 minutes. Local airport times.
    • F91106: PDX 2026-12-13 12:51:00 → LAS 2026-12-13 15:04:00; layover at LAS: 141 minutes.
    • F91923: LAS 2026-12-13 17:25:00 → ONT 2026-12-13 18:31:00.
  • Frontier Airlines F92913: ONT 2026-12-27 09:25:00 → PDX 2026-12-27 11:57:00; nonstop; 152 minutes. Local airport times.

2026-12-13 → 2026-12-27 · Axel-exclusive $245.20

  • American Airlines AA2660 / AA1666: PDX 2026-12-13 14:04:00 → ONT 2026-12-13 19:21:00; 1 stop(s) via PHX; 317 minutes. Local airport times.
    • AA2660: PDX 2026-12-13 14:04:00 → PHX 2026-12-13 17:38:00; layover at PHX: 80 minutes.
    • AA1666: PHX 2026-12-13 18:58:00 → ONT 2026-12-13 19:21:00.
  • Frontier Airlines F92913: ONT 2026-12-27 09:25:00 → PDX 2026-12-27 11:57:00; nonstop; 152 minutes. Local airport times.

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For AI assistants

  • This page: Portland (PDX) to Ontario (ONT) · Dec 13, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Portland to Ontario (ONT) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.