Your next trip, last seen at €116
Lowest observedAlaska Airlines · 1 stop · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €116, departing 10 Nov 2026 (Last checked: 23 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Alaska Airlines, Allegiant Air, Frontier Airlines, JetBlue, Southwest Airlines, United Airlines
- Typical journey time
- 13h 05m
About this route
Explore the fares we observed from Ontario to Boston. Prices move often, so pick your dates to see the latest options.
- Route distance
- 4,120 km
- Typical journey time
- 13h 05m
- Seen on fares with a connection
- Frontier Airlines, Alaska Airlines, United Airlines, Southwest Airlines, JetBlue
- Alternative airports
- PSM
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- Ontario International Airport (ONT) → Ontario, city gazetteer reference point (34.0500, -117.6400): ≈ 4 km.
- Portsmouth International Airport at Pease (PSM) → Boston, city gazetteer reference point (42.3584, -71.0598): ≈ 82 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest one-way fare we saw per airline
Cheapest airline from Ontario to Boston: Alaska Airlines, from €116 (checked 23 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Alaska Airlines | €116Nov 10, 2026 | 21 |
| Frontier Airlines | €117Dec 2, 2026 | 47 |
| United Airlines | €173Nov 23, 2026 | 8 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Ontario to Boston?
The lowest fare Routavio has observed is €116, found on 23 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Ontario to Boston?
In our observations November 2026 is the cheapest month so far, at €116.
Are there direct flights from Ontario to Boston?
Our data holds no non-stop flight from Ontario to Boston. The fares on this page include at least one stop.
Which airlines fly from Ontario to Boston?
Routavio has seen these carriers on the route: Alaska Airlines, Allegiant Air, Frontier Airlines, JetBlue, Southwest Airlines, United Airlines.
How long does the flight from Ontario to Boston take?
Across the 80 fares Routavio observed, the average journey time is 16h 05m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Ontario to Boston fares were non-stop?
None of the 81 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which airline has the lowest fare from Ontario to Boston?
Cheapest airline from Ontario to Boston: Alaska Airlines, from €116 (checked 23 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.