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Route overview: Chicago to Ontario (ONT) flight deals

Chicago → Ontario

Jan 21, 2027 · return Jan 28, 2027

ORD → ONT1 adulteconomyRound trip

7 flight options · 4 airlines

Nonstop flights

Thu, Jan 21 – Thu, Jan 28

United Airlines
4:15 pmORD
4h 32m
Nonstop
6:47 pmONT
United Airlines
11:52 pmONT
3h 54m
Nonstop
5:46 am+1ORD

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Thu, Jan 28

Frontier Airlines
6:21 amORD
7h 30m
LAS · 2h 9m
11:51 amONT
Frontier Airlines
8:35 pmONT
6h 38m
LAS · 1h 45m
5:13 am+1ORD

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

American Airlines
6:59 amORD
8h 25m
DFW · 2h 18m
1:24 pmONT
American Airlines
12:51 pmONT
7h 14m
DFW · 1h 52m
10:05 pmORD

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Delta Air Lines
7:30 amORD
6h 47m
SLC · 1h 20m
12:17 pmONT
Delta Air Lines
1:11 pmONT
7h 16m
SLC · 2h 11m
10:27 pmORD

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

American Airlines
5:25 pmORD
8h 34m
SEA · 1h 3m
11:59 pmONT
American Airlines
12:51 pmONT
7h 14m
DFW · 1h 52m
10:05 pmORD

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

American Airlines
1:26 pmORD
7h 55m
PHX · 2h 37m
7:21 pmONT
American Airlines
12:51 pmONT
7h 14m
DFW · 1h 52m
10:05 pmORD

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

United Airlines
7:00 amORD
7h 33m
DEN · 2h 29m
12:33 pmONT
United Airlines
11:52 pmONT
3h 54m
Nonstop
5:46 am+1ORD

Round-trip total · 1 adult · Taxes included

Make this trip yours

ORD ⇄ 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 routeJan 20, 2027 · Return optionsJan 22, 2027 · 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.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-01-21 → 2027-01-28United AirlinesUA1904 / UA1813Axel-exclusive $384.762026-10-29T01:53:13Z
2027-01-21 → 2027-01-28Frontier AirlinesF92145 + F91357 / F94206 + F92146Axel-exclusive $204.262026-10-29T01:53:13Z
2027-01-21 → 2027-01-28American AirlinesAA2421 + AA2635 / AA2198 + AA572Axel-exclusive $332.502026-10-29T01:53:13Z
2027-01-21 → 2027-01-28Delta Air LinesDL2231 + DL1787 / DL1787 + DL2413Axel-exclusive $351.502026-10-29T01:53:13Z
2027-01-21 → 2027-01-28American AirlinesAA1211 + AS489 / AA2198 + AA572Axel-exclusive $332.502026-10-29T01:53:13Z
2027-01-21 → 2027-01-28American AirlinesAA834 + AA1666 / AA2198 + AA572Axel-exclusive $332.502026-10-29T01:53:13Z
2027-01-21 → 2027-01-28United AirlinesUA1217 + UA430 / UA1813Axel-exclusive $358.632026-10-29T01:53:13Z

Route overview: Chicago to Ontario (ONT) flight deals

2027-01-21 → 2027-01-28 · Axel-exclusive $384.76

  • United Airlines UA1904: ORD 2027-01-21 16:15:00 → ONT 2027-01-21 18:47:00; nonstop; 272 minutes. Local airport times.
  • United Airlines UA1813: ONT 2027-01-28 23:52:00 → ORD 2027-01-29 05:46:00; nonstop; 234 minutes. Local airport times.

2027-01-21 → 2027-01-28 · Axel-exclusive $204.26

  • Frontier Airlines F92145 / F91357: ORD 2027-01-21 06:21:00 → ONT 2027-01-21 11:51:00; 1 stop(s) via LAS; 450 minutes. Local airport times.
    • F92145: ORD 2027-01-21 06:21:00 → LAS 2027-01-21 08:36:00; layover at LAS: 129 minutes.
    • F91357: LAS 2027-01-21 10:45:00 → ONT 2027-01-21 11:51:00.
  • Frontier Airlines F94206 / F92146: ONT 2027-01-28 20:35:00 → ORD 2027-01-29 05:13:00; 1 stop(s) via LAS; 398 minutes. Local airport times.
    • F94206: ONT 2027-01-28 20:35:00 → LAS 2027-01-28 21:44:00; layover at LAS: 105 minutes.
    • F92146: LAS 2027-01-28 23:29:00 → ORD 2027-01-29 05:13:00.

2027-01-21 → 2027-01-28 · Axel-exclusive $332.50

  • American Airlines AA2421 / AA2635: ORD 2027-01-21 06:59:00 → ONT 2027-01-21 13:24:00; 1 stop(s) via DFW; 505 minutes. Local airport times.
    • AA2421: ORD 2027-01-21 06:59:00 → DFW 2027-01-21 09:50:00; layover at DFW: 138 minutes.
    • AA2635: DFW 2027-01-21 12:08:00 → ONT 2027-01-21 13:24:00.
  • American Airlines AA2198 / AA572: ONT 2027-01-28 12:51:00 → ORD 2027-01-28 22:05:00; 1 stop(s) via DFW; 434 minutes. Local airport times.
    • AA2198: ONT 2027-01-28 12:51:00 → DFW 2027-01-28 17:44:00; layover at DFW: 112 minutes.
    • AA572: DFW 2027-01-28 19:36:00 → ORD 2027-01-28 22:05:00.

2027-01-21 → 2027-01-28 · Axel-exclusive $351.50

  • Delta Air Lines DL2231 / DL1787: ORD 2027-01-21 07:30:00 → ONT 2027-01-21 12:17:00; 1 stop(s) via SLC; 407 minutes. Local airport times.
    • DL2231: ORD 2027-01-21 07:30:00 → SLC 2027-01-21 10:10:00; layover at SLC: 80 minutes.
    • DL1787: SLC 2027-01-21 11:30:00 → ONT 2027-01-21 12:17:00.
  • Delta Air Lines DL1787 / DL2413: ONT 2027-01-28 13:11:00 → ORD 2027-01-28 22:27:00; 1 stop(s) via SLC; 436 minutes. Local airport times.
    • DL1787: ONT 2027-01-28 13:11:00 → SLC 2027-01-28 16:04:00; layover at SLC: 131 minutes.
    • DL2413: SLC 2027-01-28 18:15:00 → ORD 2027-01-28 22:27:00.

2027-01-21 → 2027-01-28 · Axel-exclusive $332.50

  • American Airlines AA1211 / AS489: ORD 2027-01-21 17:25:00 → ONT 2027-01-21 23:59:00; 1 stop(s) via SEA; 514 minutes. Local airport times.
    • AA1211: ORD 2027-01-21 17:25:00 → SEA 2027-01-21 20:20:00; layover at SEA: 63 minutes.
    • AS489: SEA 2027-01-21 21:23:00 → ONT 2027-01-21 23:59:00.
  • American Airlines AA2198 / AA572: ONT 2027-01-28 12:51:00 → ORD 2027-01-28 22:05:00; 1 stop(s) via DFW; 434 minutes. Local airport times.
    • AA2198: ONT 2027-01-28 12:51:00 → DFW 2027-01-28 17:44:00; layover at DFW: 112 minutes.
    • AA572: DFW 2027-01-28 19:36:00 → ORD 2027-01-28 22:05:00.

2027-01-21 → 2027-01-28 · Axel-exclusive $332.50

  • American Airlines AA834 / AA1666: ORD 2027-01-21 13:26:00 → ONT 2027-01-21 19:21:00; 1 stop(s) via PHX; 475 minutes. Local airport times.
    • AA834: ORD 2027-01-21 13:26:00 → PHX 2027-01-21 16:21:00; layover at PHX: 157 minutes.
    • AA1666: PHX 2027-01-21 18:58:00 → ONT 2027-01-21 19:21:00.
  • American Airlines AA2198 / AA572: ONT 2027-01-28 12:51:00 → ORD 2027-01-28 22:05:00; 1 stop(s) via DFW; 434 minutes. Local airport times.
    • AA2198: ONT 2027-01-28 12:51:00 → DFW 2027-01-28 17:44:00; layover at DFW: 112 minutes.
    • AA572: DFW 2027-01-28 19:36:00 → ORD 2027-01-28 22:05:00.

2027-01-21 → 2027-01-28 · Axel-exclusive $358.63

  • United Airlines UA1217 / UA430: ORD 2027-01-21 07:00:00 → ONT 2027-01-21 12:33:00; 1 stop(s) via DEN; 453 minutes. Local airport times.
    • UA1217: ORD 2027-01-21 07:00:00 → DEN 2027-01-21 08:46:00; layover at DEN: 149 minutes.
    • UA430: DEN 2027-01-21 11:15:00 → ONT 2027-01-21 12:33:00.
  • United Airlines UA1813: ONT 2027-01-28 23:52:00 → ORD 2027-01-29 05:46:00; nonstop; 234 minutes. Local airport times.

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For AI assistants

  • This page: Chicago (ORD) to Ontario (ONT) · Jan 21, 2027 · return Jan 28, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • 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 Chicago 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.