Cheap flights from Boston to Ontario

One-way fares from $194 · BOS → ONT · prices found by travellers in the last 48 hours

Compare all dates Ontario → Boston
Cheapest fare
$194

Alaska Airlines · Mon, Jan 4

Cheapest month
January

from $194

Direct flights
Not recently

Usually 1+ stop

Quickest trip
6h 50m

4,120 km

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Cheapest month to fly from Boston to Ontario

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $205
  2. December 2026 $198
  3. January 2027 Cheapest $194
  4. June 2027 $254

Plan the rest of your trip to Ontario

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in OntarioCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in OntarioTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in OntarioPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in OntarioCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Boston to Ontario

Boston (BOS) and Ontario (ONT) are about 4,120 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 6h 50m. Over the next few months, one-way fares start from $194, and January 2027 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Boston to Ontario?

The cheapest one-way fare we've seen recently is $194 with Alaska Airlines, departing Monday, January 4, 2027. Over the coming months, the lowest fare in each month ranges from $194 to $254.

What is the cheapest month to fly from Boston to Ontario?

January 2027 currently has the lowest fares, from $194 one way.

Are there direct flights from Boston to Ontario?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Boston to Ontario?

The quickest journey we've seen takes about 6h 50m. Boston and Ontario are around 4,120 km apart.

Which airlines fly from Boston to Ontario?

Recent fares on this route were with American Airlines, Southwest Airlines and Alaska Airlines.

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