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Cheap flights from Ontario to Boston from $90

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 10/28. 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

Southwest Logo
6:50 am - 5:10 pmONT-BOS
7h 20m1 stop
Southwest Logo
5:30 am - 10:40 amBOS-ONT
8h 10m1 stop
$220Southwest
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Thu, Jan 22 - Wed, Jan 28
Southwest Logo
2:15 pm - 12:05 amONT-BOS
6h 50m1 stop
Southwest Logo
5:20 am - 10:45 amBOS-ONT
8h 25m1 stop
$224Southwest
Find Deal
Thu, Nov 13 - Sat, Nov 15
United Airlines Logo
1:15 pm - 11:44 pmONT-BOS
7h 29m1 stop
United Airlines Logo
4:25 pm - 10:30 pmBOS-ONT
9h 05m1 stop
$243United Airlines
Find Deal
Sat, Oct 4 - Wed, Oct 8
United Airlines Logo
1:15 pm - 11:44 pmONT-BOS
7h 29m1 stop
United Airlines Logo
9:53 am - 5:23 pmBOS-ONT
10h 30m2 stops
$248United Airlines
Find Deal
Sat, Oct 4 - Wed, Oct 8
American Airlines Logo
10:34 pm - 10:29 amONT-BOS
8h 55m1 stop
American Airlines Logo
7:30 am - 2:02 pmBOS-ONT
9h 32m1 stop
$255American Airlines
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Mon, Nov 3 - Wed, Nov 5
American Airlines Logo
6:15 am - 7:55 pmONT-BOS
10h 40m2 stops
American Airlines Logo
6:57 am - 1:43 pmBOS-ONT
9h 46m1 stop
$260American Airlines
Find Deal
Fri, Oct 31 - Sat, Nov 1
JetBlue Logo
10:56 pm - 11:45 amONT-BOS
9h 49m1 stop
JetBlue Logo
2:45 pm - 9:29 pmBOS-ONT
9h 44m1 stop
$289JetBlue
Find Deal
Wed, Oct 1 - Thu, Oct 2
JetBlue Logo
10:56 pm - 9:34 amONT-BOS
7h 38m1 stop
JetBlue Logo
12:20 pm - 9:29 pmBOS-ONT
12h 09m1 stop
$295JetBlue
Find Deal
Tue, Sep 30 - Thu, Oct 2
Delta Logo
1:20 pm - 11:44 pmONT-BOS
7h 24m1 stop
Delta Logo
6:47 pm - 11:59 pmBOS-ONT
8h 12m1 stop
$297Delta
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Tue, Nov 11 - Tue, Dec 9
Delta Logo
1:15 pm - 11:48 pmONT-BOS
7h 33m1 stop
Delta Logo
6:10 am - 12:18 pmBOS-ONT
9h 08m1 stop
$300Delta
Find Deal
Fri, Nov 7 - Sun, Nov 9

Alaska Airlines flights from Ontario to Boston

Our best Alaska Airlines deals on Ontario to Boston flight tickets
Alaska Airlines
Nov 15
ONT11:59 amOntario
9h 21m
1 stop
BOS12:20 amBoston Logan Intl
Dec 9
BOS9:00 amBoston Logan Intl
12h 32m
1 stop
ONT6:32 pmOntario
$242
Find similar
Alaska Airlines
Nov 14
ONT11:59 amOntario
9h 21m
1 stop
BOS12:20 amBoston Logan Intl
Dec 9
BOS9:00 amBoston Logan Intl
12h 32m
1 stop
ONT6:32 pmOntario
$254
Find similar
Alaska Airlines
Nov 5
ONT11:59 amOntario
9h 21m
1 stop
BOS12:20 amBoston Logan Intl
Nov 12
BOS7:00 amBoston Logan Intl
11h 17m
1 stop
ONT3:17 pmOntario
$274
Find similar

American Airlines flights from Ontario to Boston

Our best American Airlines deals on Ontario to Boston flight tickets
American Airlines
Nov 3
ONT10:34 pmOntario
8h 55m
1 stop
BOS10:29 amBoston Logan Intl
Nov 5
BOS7:30 amBoston Logan Intl
9h 32m
1 stop
ONT2:02 pmOntario
$255
Find similar
American Airlines
Oct 31
ONT6:15 amOntario
10h 40m
2 stops
BOS7:55 pmBoston Logan Intl
Nov 1
BOS6:57 amBoston Logan Intl
9h 46m
1 stop
ONT1:43 pmOntario
$260
Find similar
American Airlines
Oct 31
ONT6:15 amOntario
10h 40m
2 stops
BOS7:55 pmBoston Logan Intl
Nov 1
BOS11:05 amBoston Logan Intl
10h 30m
2 stops
ONT6:35 pmOntario
$265
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Ontario to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 1/22

6:50 am-5:10 pm

1 stop7h 20m

Boston Logan Intl

Wed 1/28

5:30 am-10:40 am

1 stop8h 10m

$220

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 11/13

2:15 pm-12:05 am

1 stop6h 50m

Boston Logan Intl

Sat 11/15

5:20 am-10:45 am

1 stop8h 25m

$224

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sat 10/4

1:15 pm-11:44 pm

1 stop7h 29m

Boston Logan Intl

Wed 10/8

4:25 pm-10:30 pm

1 stop9h 05m

$243

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sat 10/4

1:15 pm-11:44 pm

1 stop7h 29m

Boston Logan Intl

Wed 10/8

9:53 am-5:23 pm

2 stops10h 30m

$248

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Mon 11/3

10:34 pm-10:29 am

1 stop8h 55m

Boston Logan Intl

Wed 11/5

7:30 am-2:02 pm

1 stop9h 32m

$255

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Fri 10/31

6:15 am-7:55 pm

2 stops10h 40m

Boston Logan Intl

Sat 11/1

6:57 am-1:43 pm

1 stop9h 46m

$260

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 10/1

10:56 pm-11:45 am

1 stop9h 49m

Boston Logan Intl

Thu 10/2

2:45 pm-9:29 pm

1 stop9h 44m

$289

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 9/30

10:56 pm-9:34 am

1 stop7h 38m

Boston Logan Intl

Thu 10/2

12:20 pm-9:29 pm

1 stop12h 09m

$295

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 11/11

1:20 pm-11:44 pm

1 stop7h 24m

Boston Logan Intl

Tue 12/9

6:47 pm-11:59 pm

1 stop8h 12m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Fri 11/7

1:15 pm-11:48 pm

1 stop7h 33m

Boston Logan Intl

Sun 11/9

6:10 am-12:18 pm

1 stop9h 08m

$300

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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, September 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 $364. If you aren’t able to travel during the month of September, then book flights to Boston from Ontario during August instead. Flights to Boston in August, while not as cheap as those in September, still average around $397.

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 $389. 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 $487.

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 $348. 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 $465 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 weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $412 when searching 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 $359 on momondo.

How have Ontario to Boston flight prices changed over time?

As of September 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

Direct flights

None
There are no direct flights from Ontario to Boston. There are no popular flight routes from Ontario to Boston.
Search flight deals

  • 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 50m, 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
Alaska AirlinesPriceFrom $131Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $178Free CancellationRating
7.9
7,960 reviews
Search Delta flights
JetBluePriceFrom $207Free CancellationRating
7.2
2,913 reviews
Search JetBlue flights
United AirlinesPriceFrom $271Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
American AirlinesPriceFrom $298Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $308Free CancellationRating
8.0
4,248 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
Old Orchard Beach
Hampton
York Beach
Plymouth
Kennebunkport
Cambridge
South Yarmouth
Narragansett
Nashua
Brockton
Gloucester
Laconia
Falmouth
Concord
Everett
Wells
Chatham

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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