Ontario to Chicago nonstop
Yes: United flies direct from Ontario (ONT) to Chicago (ORD) about 7 times a week, year-round.
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- Distance and flight time
- 1,700 miles nonstop, about 4 hr 5 min gate to gate. Flight time is an estimate from the great-circle distance; the filings carry distance, not scheduled elapsed time.
- Seasonality
- Flew in 11 of the last 12 months (not in February 2026): busiest in September 2025 (7 flights a week), quietest in January 2026 (1 flight a week).
- Sep 2025: 7 flights a week
- Oct 2025: 7 flights a week
- Nov 2025: 7 flights a week
- Dec 2025: 3 flights a week
- Jan 2026: 1 flights a week
- Feb 2026: no regular flights
- Mar 2026: 6 flights a week
- Apr 2026: 7 flights a week
- May 2026: 7 flights a week
- Jun 2026: 7 flights a week
- Jul 2026: 7 flights a week
- Aug 2026: 7 flights a week
Flights a week by month, Sep 2025 to Aug 2026, from US DOT on-time filings. - Who operates the flights
- United is the only carrier filing this pair.
- Fares
- Half of the 338 tickets in the US DOT fare survey for Q2 2025 sold between $125 and $275 one way, median $150. The survey runs a couple of quarters behind, so read it as the shape of the route's pricing rather than today's quote.
Flying the other way? Chicago to Ontario nonstop.
Other airports near Ontario with nonstops to Chicago
Within about 100 miles of Ontario International Airport
Also nonstop from Ontario (ONT)
Busiest other routes out of the same airport
- Seattle (SEA) about 8 times a day
- Denver (DEN) about 8 times a day
- Phoenix (PHX) about 7 times a day
- Las Vegas (LAS) about 6 times a day
- Dallas/Fort Worth (DFW) about 6 times a day
- Sacramento (SMF) about 6 times a day
- San Francisco (SFO) about 4 times a day
- Salt Lake City (SLC) about 4 times a day
Staying in Chicago?
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