C$ 290 Find Cheap Flights from Ontario to Maine – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Useful Info

Good to know

Low season

August

Cheapest flight

C$ 290
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly and prices are also 16% lower on average.
Flight from Toronto to Portland

FAQs for booking flights from Ontario to Maine

  • How does KAYAK find such low prices on flights from Ontario to Maine?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Maine.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Maine?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Maine is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Maine?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Ontario to Maine with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Maine?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ontario to Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many airports are there in Maine?

    There are 6 airports in Maine. The busiest airport is Portland Airport (PWM), with 67% of all flights arriving there.

  • How long is the flight to Maine?

    An average direct flight from Ontario to Maine takes 5h 20m, covering a distance of 1243 km. The shortest route is Montreal Pierre Elliott Trudeau Intl Airport (YUL) to Boston (BOS) with an average flight time of 1h 25m.

  • What is the most popular destination in Maine?

    Based on KAYAK flight searches, the most popular destination is Boston (100% of total searches to Maine).

Reviews of the top airline flying from Ontario to Maine

 
Need help choosing which airline to fly with from Ontario to Maine? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
United AirlinesOverall score based on 10451 reviews
7.3Comfort
6.7Food
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

Very efficient. Economy is what economy is. Wish it had been direct. Excellent setup in Newark for commuters and access to charging stations and wifi Flight could’ve had free wifi

10.0 ExcellentChris, Oct 2026
Read more United Airlines reviews

Very efficient. Economy is what economy is. Wish it had been direct. Excellent setup in Newark for commuters and access to charging stations and wifi Flight could’ve had free wifi

My flight was cancelled and United Airlines could not rebook or help. My whole trip was then cancelled and I could not go to the funeral I needed to get to.

The website check in was poor. Baggage fees were in US dollars but registered in Canadian dollars. The site would not accept my credit card. Scanning the passport was the worst. Someone from United needs to try the process. I’m not a novice with tech and I have to say this was a bad experience. Everything else was great.

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

Crew were welcoming, accommodating and they worked hard to find places for all carry on.

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

Starlink is great Crew was polite Business class didn’t get a welcome drink just water and snacks were ok

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

Hopped on time for the flight only to get deplaned and delayed another 2.5 hours.

More options for your flight to Maine

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