Travel with Axel,
get the best price.

Houston → Ontario

Jun 25, 2027 · return Jun 28, 2027

IAH → ONT1 adulteconomyRound trip

7 flight options · 4 airlines

Nonstop flights

Fri, Jun 25 – Mon, Jun 28

United Airlines
8:24 pmIAH
3h 35m
Nonstop
9:59 pmONT
United Airlines
6:00 amONT
3h 10m
Nonstop
11:10 amIAH

Round-trip total · 1 adult · Taxes included

One-stop flights

Fri, Jun 25 – Mon, Jun 28

Frontier Airlines
7:00 amIAH
6h 51m
LAS · 2h 13m
11:51 amONT
Frontier Airlines
10:35 amONT
5h 37m
LAS · 1h 17m
6:12 pmIAH

Round-trip total · 1 adult · Taxes included

Fri, Jun 25 – Mon, Jun 28

American Airlines
12:13 pmIAH
8h 39m
DFW · 3h 49m
6:52 pmONT
American Airlines
9:50 amONT
5h 49m
PHX · 1h 35m
5:39 pmIAH

Round-trip total · 1 adult · Taxes included

Fri, Jun 25 – Mon, Jun 28

Delta Air Lines
7:20 amIAH
6h 57m
SLC · 1h 45m
12:17 pmONT
Delta Air Lines
1:11 pmONT
6h 47m
SLC · 1h 51m
9:58 pmIAH

Round-trip total · 1 adult · Taxes included

Fri, Jun 25 – Mon, Jun 28

Frontier Airlines
6:26 amIAH
6h 9m
DEN · 1h 5m
10:35 amONT
Frontier Airlines
10:35 amONT
5h 37m
LAS · 1h 17m
6:12 pmIAH

Round-trip total · 1 adult · Taxes included

Fri, Jun 25 – Mon, Jun 28

American Airlines
2:37 pmIAH
6h 44m
PHX · 2h 20m
7:21 pmONT
American Airlines
9:50 amONT
5h 49m
PHX · 1h 35m
5:39 pmIAH

Round-trip total · 1 adult · Taxes included

Fri, Jun 25 – Mon, Jun 28

United Airlines
8:05 pmIAH
3h 35m
Nonstop
9:40 pmONT
United Airlines
1:40 pmONT
8h 19m
DEN · 3h 35m
11:59 pmIAH

Round-trip total · 1 adult · Taxes included

Make this trip yours

IAH ⇄ ONT

Economy

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

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, United Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

All dates for this routeNov 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 2027
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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-06-25 → 2027-06-28United AirlinesUA1563 / UA2267$420.002026-10-29T01:11:30Z
2027-06-25 → 2027-06-28Frontier AirlinesF91489 + F91357 / F92232 + F91966$220.002026-10-29T01:11:30Z
2027-06-25 → 2027-06-28American AirlinesAA3039 + AA3006 / AA1423 + AA6237$370.002026-10-29T01:11:30Z
2027-06-25 → 2027-06-28Delta Air LinesDL1583 + DL1787 / DL1787 + DL2514$390.002026-10-29T01:11:30Z
2027-06-25 → 2027-06-28Frontier AirlinesF93229 + F92907 / F92232 + F91966$220.002026-10-29T01:11:30Z
2027-06-25 → 2027-06-28American AirlinesAA2873 + AA1666 / AA1423 + AA6237$370.002026-10-29T01:11:30Z
2027-06-25 → 2027-06-28United AirlinesUA1563 / UA1263 + UA2419$395.002026-10-29T01:11:30Z

2027-06-25 → 2027-06-28 · $420.00

  • United Airlines UA1563: IAH 2027-06-25 20:24:00 → ONT 2027-06-25 21:59:00; nonstop; 215 minutes. Local airport times.
  • United Airlines UA2267: ONT 2027-06-28 06:00:00 → IAH 2027-06-28 11:10:00; nonstop; 190 minutes. Local airport times.

2027-06-25 → 2027-06-28 · $220.00

  • Frontier Airlines F91489 / F91357: IAH 2027-06-25 07:00:00 → ONT 2027-06-25 11:51:00; 1 stop(s) via LAS; 411 minutes. Local airport times.
    • F91489: IAH 2027-06-25 07:00:00 → LAS 2027-06-25 08:32:00; layover at LAS: 133 minutes.
    • F91357: LAS 2027-06-25 10:45:00 → ONT 2027-06-25 11:51:00.
  • Frontier Airlines F92232 / F91966: ONT 2027-06-28 10:35:00 → IAH 2027-06-28 18:12:00; 1 stop(s) via LAS; 337 minutes. Local airport times.
    • F92232: ONT 2027-06-28 10:35:00 → LAS 2027-06-28 11:42:00; layover at LAS: 77 minutes.
    • F91966: LAS 2027-06-28 12:59:00 → IAH 2027-06-28 18:12:00.

2027-06-25 → 2027-06-28 · $370.00

  • American Airlines AA3039 / AA3006: IAH 2027-06-25 12:13:00 → ONT 2027-06-25 18:52:00; 1 stop(s) via DFW; 519 minutes. Local airport times.
    • AA3039: IAH 2027-06-25 12:13:00 → DFW 2027-06-25 13:41:00; layover at DFW: 229 minutes.
    • AA3006: DFW 2027-06-25 17:30:00 → ONT 2027-06-25 18:52:00.
  • American Airlines AA1423 / AA6237: ONT 2027-06-28 09:50:00 → IAH 2027-06-28 17:39:00; 1 stop(s) via PHX; 349 minutes. Local airport times.
    • AA1423: ONT 2027-06-28 09:50:00 → PHX 2027-06-28 11:15:00; layover at PHX: 95 minutes.
    • AA6237: PHX 2027-06-28 12:50:00 → IAH 2027-06-28 17:39:00.

2027-06-25 → 2027-06-28 · $390.00

  • Delta Air Lines DL1583 / DL1787: IAH 2027-06-25 07:20:00 → ONT 2027-06-25 12:17:00; 1 stop(s) via SLC; 417 minutes. Local airport times.
    • DL1583: IAH 2027-06-25 07:20:00 → SLC 2027-06-25 09:45:00; layover at SLC: 105 minutes.
    • DL1787: SLC 2027-06-25 11:30:00 → ONT 2027-06-25 12:17:00.
  • Delta Air Lines DL1787 / DL2514: ONT 2027-06-28 13:11:00 → IAH 2027-06-28 21:58:00; 1 stop(s) via SLC; 407 minutes. Local airport times.
    • DL1787: ONT 2027-06-28 13:11:00 → SLC 2027-06-28 16:04:00; layover at SLC: 111 minutes.
    • DL2514: SLC 2027-06-28 17:55:00 → IAH 2027-06-28 21:58:00.

2027-06-25 → 2027-06-28 · $220.00

  • Frontier Airlines F93229 / F92907: IAH 2027-06-25 06:26:00 → ONT 2027-06-25 10:35:00; 1 stop(s) via DEN; 369 minutes. Local airport times.
    • F93229: IAH 2027-06-25 06:26:00 → DEN 2027-06-25 08:05:00; layover at DEN: 65 minutes.
    • F92907: DEN 2027-06-25 09:10:00 → ONT 2027-06-25 10:35:00.
  • Frontier Airlines F92232 / F91966: ONT 2027-06-28 10:35:00 → IAH 2027-06-28 18:12:00; 1 stop(s) via LAS; 337 minutes. Local airport times.
    • F92232: ONT 2027-06-28 10:35:00 → LAS 2027-06-28 11:42:00; layover at LAS: 77 minutes.
    • F91966: LAS 2027-06-28 12:59:00 → IAH 2027-06-28 18:12:00.

2027-06-25 → 2027-06-28 · $370.00

  • American Airlines AA2873 / AA1666: IAH 2027-06-25 14:37:00 → ONT 2027-06-25 19:21:00; 1 stop(s) via PHX; 404 minutes. Local airport times.
    • AA2873: IAH 2027-06-25 14:37:00 → PHX 2027-06-25 15:38:00; layover at PHX: 140 minutes.
    • AA1666: PHX 2027-06-25 17:58:00 → ONT 2027-06-25 19:21:00.
  • American Airlines AA1423 / AA6237: ONT 2027-06-28 09:50:00 → IAH 2027-06-28 17:39:00; 1 stop(s) via PHX; 349 minutes. Local airport times.
    • AA1423: ONT 2027-06-28 09:50:00 → PHX 2027-06-28 11:15:00; layover at PHX: 95 minutes.
    • AA6237: PHX 2027-06-28 12:50:00 → IAH 2027-06-28 17:39:00.

2027-06-25 → 2027-06-28 · $395.00

  • United Airlines UA1563: IAH 2027-06-25 20:05:00 → ONT 2027-06-25 21:40:00; nonstop; 215 minutes. Local airport times.
  • United Airlines UA1263 / UA2419: ONT 2027-06-28 13:40:00 → IAH 2027-06-28 23:59:00; 1 stop(s) via DEN; 499 minutes. Local airport times.
    • UA1263: ONT 2027-06-28 13:40:00 → DEN 2027-06-28 16:55:00; layover at DEN: 215 minutes.
    • UA2419: DEN 2027-06-28 20:30:00 → IAH 2027-06-28 23:59:00.

More dates for this route