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Cheap flights from Ontario to Boston from $125

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Boston departing on 5/3. 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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0 bags

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Find the cheapest flights from Ontario to Boston

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Boston.
12:41 pm - 11:33 pmONT-BOS
7h 52m1 stop
6:45 am - 11:50 amBOS-ONT
8h 05m1 stop
$269American Airlines
Find Deal
Sat, May 24 - Fri, May 30
10:40 pm - 9:32 amONT-BOS
7h 52m1 stop
2:45 pm - 9:25 pmBOS-ONT
9h 40m1 stop
$271JetBlue
Find Deal
Fri, May 2 - Mon, May 5
5:55 pm - 6:10 amONT-BOS
9h 15m1 stop
7:30 am - 3:50 pmBOS-ONT
11h 20m1 stop
$279Alaska Airlines
Find Deal
Wed, Jun 4 - Tue, Jun 10
11:46 am - 12:12 amONT-BOS
9h 26m1 stop
7:00 am - 3:32 pmBOS-ONT
11h 32m1 stop
$288Alaska Airlines
Find Deal
Fri, May 2 - Sat, May 3
6:34 pm - 8:55 amONT-BOS
11h 21m2 stops
4:37 pm - 10:26 pmBOS-ONT
8h 49m1 stop
$304United Airlines
Find Deal
Sat, May 31 - Sat, Jun 7
1:20 pm - 12:12 amONT-BOS
7h 52m1 stop
6:39 pm - 11:41 pmBOS-ONT
8h 02m1 stop
$313Delta
Find Deal
Sun, Apr 20 - Mon, Apr 28
4:57 pm - 6:25 amONT-BOS
10h 28m1 stop
4:25 pm - 10:16 pmBOS-ONT
8h 51m1 stop
$315Delta
Find Deal
Sat, May 17 - Sat, May 24
5:10 am - 7:27 pmONT-BOS
11h 17m2 stops
4:37 pm - 10:26 pmBOS-ONT
8h 49m1 stop
$342United Airlines
Find Deal
Sun, May 25 - Fri, Jun 6
9:20 pm - 7:55 amONT-BOS
7h 35m1 stop
1:50 pm - 9:00 pmBOS-ONT
10h 10m2 stops
$348Southwest
Find Deal
Tue, Jun 10 - Tue, Jun 17
9:35 pm - 10:50 amONT-BOS
10h 15m2 stops
1:50 pm - 9:00 pmBOS-ONT
10h 10m2 stops
$377Southwest
Find Deal
Tue, Jun 10 - Tue, Jun 17

American Airlines flights from Ontario to Boston

Our best American Airlines deals on Ontario to Boston flight tickets
American Airlines
May 24
ONT12:41 pmOntario
7h 52m
1 stop
BOS11:33 pmBoston Logan Intl
May 30
BOS6:45 amBoston Logan Intl
8h 05m
1 stop
ONT11:50 amOntario
American Airlines
Aug 27
ONT11:02 pmOntario
7h 14m
1 stop
BOS9:16 amBoston Logan Intl
Aug 31
BOS10:40 amBoston Logan Intl
9h 52m
1 stop
ONT5:32 pmOntario
American Airlines
May 7
ONT7:25 pmOntario
7h 35m
1 stop
BOS6:00 amBoston Logan Intl
May 13
BOS2:41 pmBoston Logan Intl
10h 16m
2 stops
ONT9:57 pmOntario

JetBlue flights from Ontario to Boston

Our best JetBlue deals on Ontario to Boston flight tickets
JetBlue
May 2
ONT10:40 pmOntario
7h 52m
1 stop
BOS9:32 amBoston Logan Intl
May 5
BOS2:45 pmBoston Logan Intl
9h 40m
1 stop
ONT9:25 pmOntario
JetBlue
May 24
ONT10:59 pmOntario
9h 43m
1 stop
BOS11:42 amBoston Logan Intl
May 30
BOS3:10 pmBoston Logan Intl
9h 01m
1 stop
ONT9:11 pmOntario
JetBlue
Apr 30
ONT10:40 pmOntario
10h 06m
1 stop
BOS11:46 amBoston Logan Intl
May 1
BOS2:45 pmBoston Logan Intl
9h 40m
1 stop
ONT9:25 pmOntario

See travel insights to Boston from

How to get the cheapest flight ticket from Ontario to Boston

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 cheapest month to fly to Boston?

In general, August is the cheapest month to fly from Ontario to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $369. If you aren’t able to travel during the month of August, then book flights to Boston from Ontario during September instead. Flights to Boston in September, while not as cheap as those in August, still average around $381.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from Ontario to Boston is on a Wednesday when prices can be found for as low as $400. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $520.

What is the cheapest time of day to depart on your flight to Boston?

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from Ontario to Boston in the afternoon for as low as $360. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $479 per ticket.

How far in advance should I book a flight to Boston?

You are more likely to see cheaper flights to Boston from Ontario when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $442 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Ontario for as low as $349 on momondo.

How have Ontario to Boston flight prices changed over time?

As of March 2025, prices for Ontario to Boston flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Boston (ONT to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Boston

Best Price Found

$125

Fastest flight time

6h 55m

Direct flights

None

Airports in Boston

1 airport
The best one-way flight to Boston from Ontario in the past 72 hours is $125. The best round-trip flight deal from Ontario to Boston found on momondo in the last 72 hours is $269.
The fastest flight from Ontario to Boston takes 6h 55m
There are no direct flights from Ontario to Boston. Popular non-direct route for this connection is Ontario Airport - Boston Logan Intl Airport.
There is 1 airport near Boston: Boston Logan Intl (BOS)

  • How far is Ontario to Boston Logan Intl by plane?

    The distance between Ontario and Boston Logan Intl is about 2558.5 mi. Flights usually cover this in 6h 55m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ontario Airport to Boston Logan Intl Airport?

    Prices for flights from Ontario Airport to Boston Logan Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Boston Logan Intl Airport?

  • How old do you have to be to fly from Ontario Airport to Boston Logan Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The required travel and health documents for your Boston Logan Intl 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 Boston Logan Intl 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 Ontario to Boston?


Best airlines flying from Ontario to Boston

Compare and see reviews for airlines that fly from Ontario to Boston with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $131Free CancellationRating
6.3
7,883 reviews
Search Spirit Airlines flights
JetBluePriceFrom $207Free CancellationRating
7.3
2,924 reviews
Search JetBlue flights
DeltaPriceFrom $275Free CancellationRating
8.0
7,899 reviews
Search Delta flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
8,614 reviews
Search United Airlines flights
American AirlinesPriceFrom $293Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $298Free CancellationRating
8.0
4,275 reviews
Search Southwest flights

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Hampton
Old Orchard Beach
Nashua
Cambridge
Plymouth
Brockton
York Beach
Laconia
Concord
Everett
Warwick
Middletown
Wells
Revere
Kennebunkport
Gloucester
Narragansett

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Boston?

It is quick and easy to find Ontario to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.

Can I find flights from Ontario to Boston with flexible booking policies on momondo?

momondo does allow users to show only those flights to Boston from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Boston?

momondo provides multiple filters to help you find the best flight to Boston from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Boston right now. Can momondo alert me if prices change?

Price alerts on flights to Boston from Ontario 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.


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