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Cheap flights from Ontario to Maine from $114

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 Maine departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Maine

Cheap round-trip flights

Frontier Logo
12:05 pm - 7:52 amONT-BOS
16h 47m2 stops
Frontier Logo
12:20 pm - 11:50 pmBOS-ONT
14h 30m2 stops
$242Frontier
Find Deal
jue., nov. 6 - lun., nov. 10
Frontier Logo
4:05 pm - 10:48 amONT-BOS
15h 43m2 stops
Frontier Logo
12:20 pm - 11:50 pmBOS-ONT
14h 30m2 stops
$252Frontier
Find Deal
vie., nov. 14 - lun., nov. 17
United Airlines Logo
7:00 am - 5:15 pmONT-BOS
7h 15m1 stop
United Airlines Logo
10:40 am - 6:36 pmBOS-ONT
10h 56m1 stop
$257United Airlines
Find Deal
mié., oct. 29 - mar., nov. 4
United Airlines Logo
7:00 am - 5:15 pmONT-BOS
7h 15m1 stop
United Airlines Logo
10:25 am - 6:36 pmBOS-ONT
11h 11m2 stops
$262United Airlines
Find Deal
mié., oct. 29 - mar., nov. 4
American Airlines Logo
1:00 pm - 11:58 pmONT-BOS
7h 58m1 stop
American Airlines Logo
3:54 pm - 9:33 pmBOS-ONT
8h 39m1 stop
$265American Airlines
Find Deal
mar., oct. 28 - vie., oct. 31
American Airlines Logo
10:34 pm - 10:29 amONT-BOS
8h 55m1 stop
American Airlines Logo
1:23 pm - 7:41 pmBOS-ONT
9h 18m1 stop
$267American Airlines
Find Deal
lun., nov. 3 - mié., nov. 5
Delta Logo
10:00 pm - 9:36 amONT-BOS
8h 36m1 stop
Delta Logo
6:15 am - 12:14 pmBOS-ONT
8h 59m1 stop
$297Delta
Find Deal
mar., oct. 21 - sáb., oct. 25
Southwest Logo
6:30 am - 10:15 pmONT-BOS
12h 45m1 stop
Southwest Logo
5:15 am - 1:30 pmBOS-ONT
11h 15m1 stop
$313Southwest
Find Deal
mar., oct. 7 - mar., oct. 28
Southwest Logo
5:55 am - 8:50 pmONT-BOS
11h 55m2 stops
Southwest Logo
6:50 am - 1:50 pmBOS-ONT
10h 00m2 stops
$327Southwest
Find Deal
jue., ene. 22 - mié., ene. 28
Delta Logo
1:15 pm - 11:48 pmONT-BOS
7h 33m1 stop
Delta Logo
6:15 am - 12:14 pmBOS-ONT
8h 59m1 stop
$338Delta
Find Deal
vie., oct. 24 - sáb., oct. 25

Frontier flights from Ontario to Maine

Our best Frontier deals on Ontario to Maine flight tickets
Frontier
Nov 6
ONT12:05 pmOntario
16h 47m
2 stops
BOS7:52 amBoston Logan Intl
Nov 10
BOS12:20 pmBoston Logan Intl
14h 30m
2 stops
ONT11:50 pmOntario
$242
Find similar
Frontier
Nov 14
ONT4:05 pmOntario
15h 43m
2 stops
BOS10:48 amBoston Logan Intl
Nov 17
BOS12:20 pmBoston Logan Intl
14h 30m
2 stops
ONT11:50 pmOntario
$252
Find similar
Frontier
Oct 31
ONT4:05 pmOntario
15h 43m
2 stops
BOS10:48 amBoston Logan Intl
Nov 3
BOS8:40 amBoston Logan Intl
18h 10m
2 stops
ONT11:50 pmOntario
$253
Find similar

United Airlines flights from Ontario to Maine

Our best United Airlines deals on Ontario to Maine flight tickets
United Airlines
Oct 29
ONT7:00 amOntario
7h 15m
1 stop
BOS5:15 pmBoston Logan Intl
Nov 4
BOS10:40 amBoston Logan Intl
10h 56m
1 stop
ONT6:36 pmOntario
$257
Find similar
United Airlines
Oct 29
ONT7:00 amOntario
7h 15m
1 stop
BOS5:15 pmBoston Logan Intl
Nov 4
BOS10:25 amBoston Logan Intl
11h 11m
2 stops
ONT6:36 pmOntario
$262
Find similar
United Airlines
Jan 22
ONT5:05 amOntario
7h 38m
1 stop
BOS3:43 pmBoston Logan Intl
Jan 28
BOS1:30 pmBoston Logan Intl
12h 23m
2 stops
ONT10:53 pmOntario
$282
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Maine 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 septiembre 23, 2025.
Use the filters below to find and compare flights from Ontario to Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBoston

ONT - BOS

ONTBOS

Ontario

jue. 11/6

12:05 pm-7:52 am

2 stops16h 47m

Boston Logan Intl

lun. 11/10

12:20 pm-11:50 pm

2 stops14h 30m

$242

OntarioBoston

ONT - BOS

ONTBOS

Ontario

vie. 11/14

4:05 pm-10:48 am

2 stops15h 43m

Boston Logan Intl

lun. 11/17

12:20 pm-11:50 pm

2 stops14h 30m

$252

OntarioBoston

ONT - BOS

ONTBOS

Ontario

mié. 10/29

7:00 am-5:15 pm

1 stop7h 15m

Boston Logan Intl

mar. 11/4

10:40 am-6:36 pm

1 stop10h 56m

$257

OntarioBoston

ONT - BOS

ONTBOS

Ontario

mié. 10/29

7:00 am-5:15 pm

1 stop7h 15m

Boston Logan Intl

mar. 11/4

10:25 am-6:36 pm

2 stops11h 11m

$262

OntarioBoston

ONT - BOS

ONTBOS

Ontario

mar. 10/28

1:00 pm-11:58 pm

1 stop7h 58m

Boston Logan Intl

vie. 10/31

3:54 pm-9:33 pm

1 stop8h 39m

$265

OntarioBoston

ONT - BOS

ONTBOS

Ontario

lun. 11/3

10:34 pm-10:29 am

1 stop8h 55m

Boston Logan Intl

mié. 11/5

1:23 pm-7:41 pm

1 stop9h 18m

$267

OntarioBoston

ONT - BOS

ONTBOS

Ontario

mar. 10/21

10:00 pm-9:36 am

1 stop8h 36m

Boston Logan Intl

sáb. 10/25

6:15 am-12:14 pm

1 stop8h 59m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

mar. 10/7

6:30 am-10:15 pm

1 stop12h 45m

Boston Logan Intl

mar. 10/28

5:15 am-1:30 pm

1 stop11h 15m

$313

OntarioBoston

ONT - BOS

ONTBOS

Ontario

jue. 1/22

5:55 am-8:50 pm

2 stops11h 55m

Boston Logan Intl

mié. 1/28

6:50 am-1:50 pm

2 stops10h 00m

$327

OntarioBoston

ONT - BOS

ONTBOS

Ontario

vie. 10/24

1:15 pm-11:48 pm

1 stop7h 33m

Boston Logan Intl

sáb. 10/25

6:15 am-12:14 pm

1 stop8h 59m

$338

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 Maine from

How to get the cheapest flight ticket from Ontario to Maine

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 Maine?

The cheapest month to fly to Maine from Ontario is in January. Flight prices, which tend to average around $246, are often lower during this time because this is during the off-season. If you aren’t able to travel to Maine during the month of January, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $332.

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

The cheapest day to depart from Ontario to Maine is on a Thursday. Travelers who choose to depart for Maine on a Thursday will often find tickets for as low as $451. Flights from Ontario to Maine on a Sunday will generally be more expensive and average around $989. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

The cheapest time of day to fly to Maine is in the evening when flights can be purchased for as low as $439. Flights in the morning are often more expensive with an average ticket price of $683.

Can stopping save me money on Ontario to Maine flights?

You could potentially save up to 3% on your flight if you consider stops on a Ontario to Maine flight.

Cheap Ontario to Maine flight deals and tips

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

Direct flights

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

  • When did momondo last update prices for flights from Ontario Airport to Maine?

    Prices for flights from Ontario Airport to Maine were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to Maine?

  • How old do you have to be to fly from Ontario Airport to Maine?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Maine.

  • What documentation or ID do you need to fly to Maine?

    The travel and health documents required for your trip to Maine can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Maine. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to Maine

Compare and see reviews for airlines that fly from Ontario to Maine with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $256Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $287Free CancellationRating
7.9
7,974 reviews
Search Delta flights
United AirlinesPriceFrom $356Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
SouthwestPriceFrom $391Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Maine for you.

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

All flight searches from Ontario to Maine on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Maine 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 Maine right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Maine flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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jue. 10/23
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