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$117+ Cheap flights from Maine to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — ONT
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Maine to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Maine (USME) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

Find flight deals from Maine to Ontario

Cheapest flights from Maine to Ontario
Explore the most affordable flight options available from Maine to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This American Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/117:25 amBOS - ONT
1 stop9h 28mAmerican Airlines
Wed 12/182:54 pmONT - BOS
1 stop7h 22mAmerican Airlines
Deal found 11/18$318
This Alaska Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/97:54 pmBOS - ONT
1 stop20h 04mAlaska Airlines
Wed 12/116:00 amONT - BOS
1 stop30h 13mAlaska Airlines
Deal found 11/19$322
This Kissandfly.com deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/117:00 amBOS - ONT
1 stop16h 00mMultiple Airlines
Wed 12/181:39 pmONT - BOS
3 stops14h 54mMultiple Airlines
Deal found 11/18$328
This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/161:35 pmBOS - ONT
1 stop9h 10mDelta
Wed 12/255:30 amONT - BOS
1 stop8h 22mDelta
Deal found 11/19$331
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/75:22 amBGR - ONT
2 stops16h 16mAmerican Airlines
Fri 12/137:30 pmONT - BGR
2 stops13h 32mAmerican Airlines
Deal found 11/19$348
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3111:07 amBOS - ONT
2 stops14h 53mUnited Airlines
Fri 1/106:38 pmONT - BOS
1 stop10h 15mUnited Airlines
Deal found 11/19$398
This Southwest deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/47:25 amBOS - ONT
2 stops10h 55mSouthwest
Mon 12/911:30 amONT - BOS
2 stops9h 10mSouthwest
Deal found 11/19$436
This Southwest deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/195:30 amPWM - ONT
2 stops12h 35mSouthwest
Thu 1/29:00 pmONT - PWM
2 stops14h 35mSouthwest
Deal found 11/19$512
This United deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/79:30 amBGR - ONT
3 stops17h 28mUnited Airlines
Fri 12/135:05 amONT - BGR
2 stops13h 20mUnited Airlines
Deal found 11/19$634
This United Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:20 amPWM - ONT
2 stops10h 20mUnited Airlines
Sun 12/296:30 pmONT - PWM
2 stops13h 01mUnited Airlines
Deal found 11/20$675
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:39 amPWM - ONT
2 stops14h 02mAmerican Airlines
Sat 12/2812:59 amONT - PWM
2 stops11h 41mAmerican Airlines
Deal found 11/20$726
This Delta deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2112:51 pmPWM - ONT
2 stops13h 10mDelta
Sun 11/2411:53 amONT - PWM
1 stop8h 54mDelta
Deal found 11/20$773

Find flights from Maine to Ontario within your budget

Customize your flight search to find flights from Maine to Ontario 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, Cheapflights users made 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 1/8

5:40 pm-11:53 pm

1 stop9h 13m

Ontario

Fri 1/10

7:00 am-8:31 pm

1 stop10h 31m

$308

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Mon 1/13

10:57 am-8:29 pm

2 stops12h 32m

Ontario

Thu 1/30

6:15 am-5:11 pm

1 stop7h 56m

$313

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Mon 2/3

7:00 am-3:11 pm

1 stop11h 11m

Ontario

Wed 2/26

6:00 am-11:59 pm

1 stop14h 59m

$315

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 12/11

7:25 am-1:53 pm

1 stop9h 28m

Ontario

Wed 12/18

2:54 pm-1:16 am

1 stop7h 22m

$318

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 1/10

10:45 am-7:00 pm

2 stops11h 15m

Ontario

Mon 1/13

11:15 am-9:40 pm

1 stop7h 25m

$333

PortlandOntario

PWM - ONT

PWMONT

Portland

Mon 2/10

5:44 am-3:29 pm

2 stops12h 45m

Ontario

Tue 2/18

6:13 am-10:26 pm

2 stops13h 13m

$342

BangorOntario

BGR - ONT

BGRONT

Bangor

Sat 12/7

5:22 am-6:38 pm

2 stops16h 16m

Ontario

Fri 12/13

7:30 pm-12:02 pm

2 stops13h 32m

$348

PortlandOntario

PWM - ONT

PWMONT

Portland

Mon 2/10

1:25 pm-11:05 pm

2 stops12h 40m

Ontario

Mon 2/17

7:50 pm-12:50 pm

2 stops14h 00m

$422

PortlandOntario

PWM - ONT

PWMONT

Portland

Mon 2/10

12:00 pm-10:52 pm

2 stops13h 52m

Ontario

Mon 2/17

1:00 pm-11:51 pm

1 stop7h 51m

$617

BangorOntario

BGR - ONT

BGRONT

Bangor

Sat 12/7

9:30 am-11:58 pm

3 stops17h 28m

Ontario

Fri 12/13

5:05 am-9:25 pm

2 stops13h 20m

$634

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 23 results
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Best time to book a flight from Maine to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Maine with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Maine to Ontario

Get recent, data-driven insights about flights from Maine to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Maine to Ontario?

Currently, September is the cheapest month in which you can book a flight from Maine to Ontario (average of $236). Flying from Maine to Ontario in December is currently the most expensive (average of $298). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated November 20, 2024.
Read through reviews of airlines operating flights from Maine to Ontario, such as American Airlines, Delta and Southwest. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

Find useful and relevant information for your journey from Maine to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Maine?

    If you book a flight to Ontario from Maine, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • What are the cheapest airlines to fly from Maine to Ontario one-way?

    $117 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $139 and $154, respectively.

  • What are the most popular routes from Maine to Ontario?

    The most popular route from Maine to Ontario is Boston Logan Intl - Ontario. You may also consider Portland - Ontario or Bangor - Ontario.

  • Can I find deals for flights from Maine to Ontario that include hotel bookings?

    Yes. In addition to deals on Maine to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Maine to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Maine to Ontario.

  • Can I find deals for business class flights from Maine to Ontario?

    Yes. Cheapflights offers flight deals from Maine to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Maine to Ontario?

    Currently, September is the cheapest month in which you can book a flight from Maine to Ontario (average of $236). Flying from Maine to Ontario in December is currently the most expensive (average of $298). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Maine to Ontario

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Top airline flying from Maine to Ontario

Discover the top airline that operate flights from Maine to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$352Average$592FlexibilityNo cancel feeOn-time71%
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