Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Maine from $99

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 2/24. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Maine

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
11:53 am - 11:54 pmONT-BOS
9h 01m1 stop
Alaska Airlines Logo
7:00 am - 3:08 pmBOS-ONT
11h 08m1 stop
$248Alaska Airlines
Find Deal
Tue, Jan 27 - Tue, Feb 3
Alaska Airlines Logo
1:46 pm - 3:20 pmONT-BOS
22h 34m1 stop
Alaska Airlines Logo
7:00 am - 3:08 pmBOS-ONT
11h 08m1 stop
$250Alaska Airlines
Find Deal
Mon, Feb 2 - Tue, Feb 10
American Airlines Logo
9:59 am - 10:19 pmONT-BOS
9h 20m2 stops
American Airlines Logo
8:50 am - 4:05 pmBOS-ONT
10h 15m1 stop
$256American Airlines
Find Deal
Thu, Jan 8 - Sun, Jan 11
United Airlines Logo
6:00 am - 6:48 pmONT-BOS
9h 48m2 stops
United Airlines Logo
3:32 pm - 9:49 pmBOS-ONT
9h 17m1 stop
$276United Airlines
Find Deal
Mon, Dec 8 - Thu, Dec 11
Delta Logo
10:30 pm - 5:16 pmONT-PWM
15h 46m2 stops
Delta Logo
5:30 am - 11:31 amPWM-ONT
9h 01m1 stop
$302Delta
Find Deal
Tue, Jan 20 - Sat, Jan 24
Delta Logo
10:30 pm - 1:45 pmONT-PWM
12h 15m2 stops
Delta Logo
5:30 am - 11:31 amPWM-ONT
9h 01m1 stop
$321Delta
Find Deal
Tue, Jan 20 - Sat, Jan 24
American Airlines Logo
6:27 am - 10:54 pmONT-PWM
13h 27m2 stops
American Airlines Logo
5:30 am - 2:18 pmPWM-ONT
11h 48m2 stops
$361American Airlines
Find Deal
Tue, Jan 20 - Sat, Jan 24
Southwest Logo
11:55 pm - 2:10 pmONT-PWM
11h 15m2 stops
Southwest Logo
5:30 am - 3:15 pmPWM-ONT
12h 45m1 stop
$370Southwest
Find Deal
Thu, Apr 9 - Mon, Apr 13
Southwest Logo
11:55 pm - 2:10 pmONT-PWM
11h 15m2 stops
Southwest Logo
2:50 pm - 11:05 pmPWM-ONT
11h 15m2 stops
$399Southwest
Find Deal
Thu, Apr 9 - Mon, Apr 13
United Airlines Logo
5:05 am - 8:12 pmONT-BGR
12h 07m2 stops
United Airlines Logo
8:14 am - 8:58 pmBGR-ONT
15h 44m2 stops
$419United Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12

Alaska Airlines flights from Ontario to Maine

Our best Alaska Airlines deals on Ontario to Maine flight tickets
Alaska Airlines
Jan 27
ONT11:53 amOntario
9h 01m
1 stop
BOS11:54 pmBoston Logan Intl
Feb 3
BOS7:00 amBoston Logan Intl
11h 08m
1 stop
ONT3:08 pmOntario
$248
Find similar
Alaska Airlines
Feb 2
ONT1:46 pmOntario
22h 34m
1 stop
BOS3:20 pmBoston Logan Intl
Feb 10
BOS7:00 amBoston Logan Intl
11h 08m
1 stop
ONT3:08 pmOntario
$250
Find similar
Alaska Airlines
Jan 8
ONT11:53 amOntario
9h 01m
1 stop
BOS11:54 pmBoston Logan Intl
Jan 14
BOS7:00 amBoston Logan Intl
11h 08m
1 stop
ONT3:08 pmOntario
$251
Find similar

United Airlines flights from Ontario to Maine

Our best United Airlines deals on Ontario to Maine flight tickets
United Airlines
Dec 8
ONT6:00 amOntario
8h 43m
1 stop
BOS5:43 pmBoston Logan Intl
Dec 11
BOS3:32 pmBoston Logan Intl
9h 17m
1 stop
ONT9:49 pmOntario
$271
Find similar
United Airlines
Dec 8
ONT6:00 amOntario
9h 48m
2 stops
BOS6:48 pmBoston Logan Intl
Dec 11
BOS3:32 pmBoston Logan Intl
9h 17m
1 stop
ONT9:49 pmOntario
$276
Find similar
United Airlines
Jan 12
ONT6:39 pmOntario
10h 31m
1 stop
BOS8:10 amBoston Logan Intl
Jan 16
BOS3:25 pmBoston Logan Intl
9h 33m
1 stop
ONT9:58 pmOntario
$285
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 November 26, 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

Tue 1/27

11:53 am-11:54 pm

1 stop9h 01m

Boston Logan Intl

Tue 2/3

7:00 am-3:08 pm

1 stop11h 08m

$248

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Mon 2/2

1:46 pm-3:20 pm

1 stop22h 34m

Boston Logan Intl

Tue 2/10

7:00 am-3:08 pm

1 stop11h 08m

$250

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 1/8

9:59 am-10:19 pm

2 stops9h 20m

Boston Logan Intl

Sun 1/11

8:50 am-4:05 pm

1 stop10h 15m

$256

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Mon 12/8

6:00 am-6:48 pm

2 stops9h 48m

Boston Logan Intl

Thu 12/11

3:32 pm-9:49 pm

1 stop9h 17m

$276

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 1/20

10:30 pm-5:16 pm

2 stops15h 46m

Portland

Sat 1/24

5:30 am-11:31 am

1 stop9h 01m

$302

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 1/20

10:30 pm-1:45 pm

2 stops12h 15m

Portland

Sat 1/24

5:30 am-11:31 am

1 stop9h 01m

$321

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 1/20

6:27 am-10:54 pm

2 stops13h 27m

Portland

Sat 1/24

5:30 am-2:18 pm

2 stops11h 48m

$361

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Thu 4/9

11:55 pm-2:10 pm

2 stops11h 15m

Portland

Mon 4/13

5:30 am-3:15 pm

1 stop12h 45m

$370

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Thu 4/9

11:55 pm-2:10 pm

2 stops11h 15m

Portland

Mon 4/13

2:50 pm-11:05 pm

2 stops11h 15m

$399

OntarioBangor

ONT - BGR

ONTBGR

Ontario

Thu 1/8

5:05 am-8:12 pm

2 stops12h 07m

Bangor

Mon 1/12

8:14 am-8:58 pm

2 stops15h 44m

$419

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 7% 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

Fastest flight time

7h 02m

Direct flights

None
The fastest flight from Ontario to Maine takes 7h 02m
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
DeltaPriceFrom $148Free CancellationRating
7.9
7,999 reviews
Search Delta flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
United AirlinesPriceFrom $380Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights
SouthwestPriceFrom $383Free CancellationRating
8.0
4,254 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.

An easier way to manage your Maine trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 12/26
Fri 1/2
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Maine

Popular cities in Maine

Popular flights according to clicks in the last 7 days on momondo
Flights to New Yorkfrom $33
Flights to Los Angelesfrom $49
Flights to Miamifrom $48
Flights to Chicagofrom $58
Flights to Orlandofrom $48
Flights to Las Vegasfrom $49
Flights to San Franciscofrom $57
Flights to Washington, D.C.from $38
Flights to Bostonfrom $59
Flights to Atlantafrom $48
Flights to Dallasfrom $54
Flights to Seattlefrom $58