Cheap flights from Boston to Los Angeles from $126
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Los Angeles departing on 11/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Our best Southwest deals on Boston to Ontario flight tickets
Alaska Airlines flights from Boston to Ontario
Our best Alaska Airlines deals on Boston to Ontario flight tickets
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Fly from
Fly to
Route
Depart
Return
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Thu 1/7
6:22 am-12:39 pm
1 stop9h 17m
Ontario
Mon 1/11
1:24 pm-11:42 pm
1 stop7h 18m
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Sat 10/31
3:52 pm-9:11 pm
1 stop8h 19m
Ontario
Sat 11/7
1:23 pm-11:46 pm
1 stop7h 23m
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Tue 1/5
5:00 am-10:10 am
1 stop8h 10m
Ontario
Tue 1/12
6:45 am-4:35 pm
1 stop6h 50m
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Thu 1/28
5:05 am-10:15 am
1 stop8h 10m
Ontario
Thu 1/28
1:50 pm-11:45 pm
1 stop6h 55m
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Wed 11/11
3:28 pm-9:40 pm
1 stop9h 12m
Ontario
Wed 11/18
7:00 am-7:14 pm
1 stop9h 14m
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Mon 11/9
1:32 pm-9:40 pm
1 stop11h 08m
Ontario
Thu 12/10
6:00 am-4:55 pm
1 stop7h 55m
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Tue 11/10
7:13 am-3:13 pm
1 stop11h 00m
Ontario
Wed 11/18
4:09 pm-5:40 am
1 stop10h 31m
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Wed 11/18
7:13 am-3:13 pm
1 stop11h 00m
Ontario
Thu 11/19
4:09 pm-6:20 am
1 stop11h 11m
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Sat 10/31
2:15 pm-7:30 pm
1 stop8h 15m
Ontario
Sat 11/7
12:16 pm-1:20 am
1 stop10h 04m
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Sat 10/31
5:30 am-11:06 am
1 stop8h 36m
Ontario
Sat 11/7
12:16 pm-1:20 am
1 stop10h 04m
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How to get the cheapest flight ticket from Boston to Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Boston and Ontario?
Prices are currently low for flights on this route.
Typical prices usually range from $358 to $572.The lowest price recently found on this route was $251.
What is the cheapest month to fly to Ontario?
In general, February is the cheapest month to fly from Boston to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $352. If you aren’t able to travel during the month of February, then book flights to Ontario from Boston during January instead. Flights to Ontario in January, while not as cheap as those in February, still average around $366.
How far in advance should I book a flight from Boston to Ontario?
You are more likely to see cheaper flights to Ontario from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $500 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Boston for as low as $326 on momondo.
What is the cheapest airline that flies from Boston Logan Intl to Ontario?
Delta and United Airlines are the most popular carriers operating from Boston Logan Intl to Ontario
What airlines fly to Ontario?
JetBlue, American Airlines and United Airlines are the top three most popular airlines that fly to Ontario from Boston according to our data. JetBlue is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 9 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
When to book flights from Boston to Ontario
Cheap Boston to Ontario (BOS to ONT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Boston to Ontario
Frequently asked questions about flying from Boston to Ontario
How far is Boston Logan Intl to Ontario by plane?
The distance between Boston Logan Intl and Ontario is about 2558.5 mi. A reasonable flight in good conditions will take 8h 04m.
When did momondo last update prices for flights from Boston Logan Intl Airport to Ontario Airport?
Prices for flights from Boston Logan Intl Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Boston Logan Intl Airport to Ontario Airport?
There are 5 operators available for flights from Boston Logan Intl Airport to Ontario Airport as of October 2026.
How old do you have to be to fly from Boston Logan Intl Airport to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Boston to Ontario?
momondo data reveals that the most frequently booked airline on the route from Boston to Ontario is American Airlines, representing 36% of all bookings. The subsequent popular airlines are Southwest at 28%, Delta at 16%, and United Airlines at 14%.
Best airlines flying from Boston to Ontario
Compare and see reviews for airlines that fly from Boston to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $233 | Free Cancellation | Rating 7.8 8,645 reviews | |||
| PriceFrom $258 | Free Cancellation | Rating 7.4 10,319 reviews | |||
| PriceFrom $258 | Free Cancellation | Rating 7.0 12,145 reviews | |||
| PriceFrom $298 | Free Cancellation | Rating 7.1 3,049 reviews | |||
| PriceFrom $317 | Free Cancellation | Rating 7.9 4,222 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Boston to Ontario?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Boston.
Can I find flights from Boston to Ontario with flexible booking policies on momondo?
momondo does allow users to show only those flights to Ontario from Boston which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Boston to Ontario?
momondo provides multiple filters to help you find the best flight to Ontario from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Boston to Ontario right now. Can momondo alert me if prices change?
Price alerts on flights to Ontario from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.