Ontario to Oakland flights
The cheapest round trip we found from Ontario to Oakland is $104 (Dec 2 – 4, Nonstop), 7% below the usual $112.
ONT to OAK · Round trip · Economy · Prices per person in USD · Price found (3 days ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $100 |
| December 2026 | $95 (cheapest month) |
| January 2027 | $129 |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 2 – 4 2 nights · leave Wed$104 −7% vs usual$104 −7% vs usual Book
Southwest Airlines Nonstop · 1h 20m -
Nov 20 – 27 7 nights · leave Fri$112$112 Book
Southwest Airlines Nonstop · 1h 20m
-
Nov 23 – 27 4 nights · leave Mon$112$112 Book
Southwest Airlines Nonstop · 1h 20m
-
Jan 4 – 7, 2027 3 nights · leave Mon$129 +15% vs usual$129 +15% vs usual Book
Southwest Airlines Nonstop · 1h 20m
-
Nov 26 – 29 3 nights · leave Thu$199 +78% vs usual$199 +78% vs usual Book
Southwest Airlines Nonstop · 1h 20m
-
Nov 29 – Dec 1 2 nights · leave Sun$248 +121% vs usual$248 +121% vs usual Book
Southwest Airlines Nonstop · 1h 25m
-
Nov 25 – 29 4 nights · leave Wed$2,144 +1814% vs usual$2,144 +1814% vs usual Book
Alaska Airlines 1 stop · 4h 14m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Airport transfer to Oakland
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Plan the rest of your trip
Oakland · Dec 2 – 4- Car rental Economybookings · compare rental companies (opens Economybookings in a new tab)
- Things to do in Oakland Klook · tours and tickets (opens Klook in a new tab)
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Good to know
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Flights to Oakland from other cities
All flights to Oakland Flying the other way? Oakland to Ontario from $101
Ontario to Oakland: questions
How much does a flight from Ontario to Oakland cost?
The cheapest round trip we have found right now is $104, leaving December 2 and returning December 4. The usual price on this route is about $112, so this fare is 7% less. Prices are per person, economy, in USD.
What is the cheapest month to fly from Ontario to Oakland?
December 2026, with round trips from $95. The most expensive month in our data is January (from $129). Based on the 3 months ahead we have prices for.
Which airports do Ontario to Oakland flights use?
Ontario airports include Ontario International (ONT). Oakland airports include Metropolitan Oakland International (OAK). The prices on this page cover every airport in both cities (ONT and OAK are the city codes).
About this route
We track round-trip economy fares from Ontario (United States) to Oakland (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $104, departing December 2 and returning December 4 on a nonstop flight, about 7% below the usual $112. Right now we're following 7 upcoming date combinations on this route. The cheapest month to fly in our data is December, from $95. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.