Flights from Boston to Ontario
Compare 800+ airlines · Book direct · No Mubboo fees
From $399 · Prices update daily
We don't sell anything. We compare — you choose the best deal.
The quick answer
Flights from Boston to Ontario start around $399 round-trip. Airlines on this route include: American Airlines, Southwest Airlines, United Airlines. Cheapest month: July; peak: August (about +2%).
Price calendar — next 60 days
★ Cheapest: $399 on Sun, Jul 26 · WN
Lowest return fares · Prices update daily · Final price confirmed at booking
Price calendar — Boston to Ontario
Month-by-month lowest fares. Green = cheapest dates.
United States essentials
🇺🇸 Domestic flight — no passport required
Domestic flight — no passport required for US citizens. Bring REAL ID for security.
Full Ontario visa guide →🆘 Emergency
911
💱 Currency
US Dollar ($)
🕐 Time zone
UTC−5 to −10
🗣️ Language
English
🔌 Plugs
Type A/B · 120V
🚗 Driving
Right side
💡 Tipping
Expected — 15–20% at restaurants
📞 Dial code
+1
Entry rules can change — always confirm with official sources before booking.
Stay connected in Ontario
Skip roaming fees — get a local eSIM before you land. Works in 200+ countries and activates instantly, so you’re online the moment you touch down.
Travel insurance
Protect your Boston to Ontario trip against delays, cancellations, and medical emergencies. US travelers can compare plans from top insurers.
Airport transfer in Ontario
Pre-book your ride into Ontario. Fixed price, meet & greet, and a driver waiting at arrivals — no meter anxiety after a long flight.
Flight delayed or cancelled?
If your Boston to Ontario flight was delayed more than 3 hours or cancelled, you may be entitled to up to €600 in compensation under EU/UK rules — even if you flew a non-EU airline. Free to check, no win no fee.
More resources
Boston to Ontario — frequently asked
How much is a flight from Boston to Ontario?+
Fares start around $399 round-trip, ranging up to about $538 in peak periods. Prices update daily across 800+ airlines.
What is the cheapest month to fly Boston to Ontario?+
July typically has the lowest fares, while August is the most expensive (around +2%).
Are there direct flights from Boston to Ontario?+
This route is usually served by connecting flights. Use the search above to check for any direct options on your dates.
Which airlines fly from Boston to Ontario?+
Carriers on this route include American Airlines, Southwest Airlines, United Airlines. Compare them side by side in the search above.
Mubboo earns a commission when you book through our links. This does not affect the prices you see or our recommendations. Final prices are confirmed on the booking site.