Cheap Flights to Great Diamond Island , ME from CA $146

View CA $146 flight on Wed, Jun 10, 2026Opens in a new window

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How much is the cheapest flight to Great Diamond Island?

Prices were available within the past 7 days and start at CA $146 for one-way flights and CA $289 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Jun 18 - Sat, Jun 27
BUF
Buffalo
PWM
Portland
CA $289 Roundtrip, found 6 days ago
CA $289
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Jun 18 from Buffalo to Portland, returning Sat, Jun 27, priced at CA $289 found 6 days ago
American Airlines
Mon, Jun 29 - Fri, Jul 3
BUF
Buffalo
PWM
Portland
CA $348 Roundtrip, found 1 day ago
CA $348
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Jun 29 from Buffalo to Portland, returning Fri, Jul 3, priced at CA $348 found 1 day ago
JetBlue Airways
Tue, Jul 7 - Fri, Jul 10
BUF
Buffalo
PWM
Portland
CA $372 Roundtrip, found 22 hours ago
CA $372
Roundtrip
found 22 hours ago
Select JetBlue Airways flight, departing Tue, Jul 7 from Buffalo to Portland, returning Fri, Jul 10, priced at CA $372 found 22 hours ago
United
Tue, Sep 1 - Tue, Sep 15
YVR
Vancouver
PWM
Portland
CA $426 Roundtrip, found 6 days ago
CA $426
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 1 from Vancouver to Portland, returning Tue, Sep 15, priced at CA $426 found 6 days ago
Air Canada
Tue, Sep 1 - Thu, Sep 17
YVR
Vancouver
PWM
Portland
CA $500 Roundtrip, found 3 days ago
CA $500
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Sep 1 from Vancouver to Portland, returning Thu, Sep 17, priced at CA $500 found 3 days ago

Frequently asked questions

How do I find cheap flights to Great Diamond Island that have flexible change policies?
At Expedia, we've been channeling our inner gymnast to offer you the most flexible airfares on the market. Simply click on "No change fee" directly under the filter heading "Flexible change policies" to find your ideal flight to Great Diamond Island.
Which airlines fly to Great Diamond Island?
With a great selection of airlines that fly into or near Great Diamond Island, you have plenty of options:

  • American Airlines - 225 flights to or near Great Diamond Island each month, including 225 flights to Portland Intl. Jetport Airport (PWM) per month.
  • Delta - 208 flights to or near Great Diamond Island each month, including 208 flights to Portland Intl. Jetport Airport (PWM) per month.
  • United Airlines - 164 flights to or near Great Diamond Island each month, including 164 flights to Portland Intl. Jetport Airport (PWM) per month.

How can I find cheap tickets to Great Diamond Island?
An useful strategy for nabbing cheap tickets is to be flexible with your dates. Start by searching for your flight to Great Diamond Island, then click on the "flexible dates" box for a list of prices for nearby days. Another tip? Book ahead of time. To give you an idea of costs, CA $289 was the best price for a flight to Great Diamond Island in the last seven days.
How much is a flight to Great Diamond Island?
One-way flights leaving Buffalo (BUF) sold for as little as CA $146 in the last seven days. During this time, the price of a round-trip fare to Great Diamond Island ranged between CA $289 and CA $500. If you find a fantastic deal, grab it quickly — these fares don't hang around.
What are the most popular airports to fly into in Great Diamond Island?
The main entryway to Great Diamond Island, around 776 flights taxi into Portland Intl. Jetport Airport (PWM) every month. Find an unbeatable deal, reserve your seat and prepare to discover this wonderful region.
When is the cheapest time to fly to Great Diamond Island?
Take off to Great Diamond Island earlier in the week and you'll usually be rewarded with lower fares. Tuesday is typically the cheapest day to hop on a plane, with Monday a close second. If you want to avoid the priciest flights, stay away from Saturdays.
How much is a plane ticket to Great Diamond Island?
In the last seven days, airfares to Great Diamond Island varied between CA $289 and CA $500. The early bird catches the worm, so land yourself a terrific deal today.
What months are the cheapest to book a flight to Great Diamond Island?
February is the best month to reserve a seat for your Great Diamond Island vacation. Tickets are at their most expensive during the festive month of December, so keep clear of this time if possible.

Book with confidence

Expedia.ca gives you the best tools to secure great deals on flights to Great Diamond Island. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to Great Diamond Island. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Great Diamond Island.

Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your Great Diamond Island flights with full confidence knowing that you've found the best deal online.

Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to Great Diamond Island.

Looking to save even more? Get additional savings by bundling your Great Diamond Island flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your Great Diamond Island trip!

Travel information

Destination airport
Portland Intl. Jetport
Destination airport IATA code
PWM
Destination city name
Portland
Roundtrip price
CA $289

Trending flights to Great Diamond Island

Prices were available within the past 7 days and start at CA $146 for one-way flights and CA $289 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 1 - Tue, Sep 15
YVR
Vancouver
PWM
Portland
CA $426 Roundtrip, found 6 days ago
CA $426
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 1 from Vancouver to Portland, returning Tue, Sep 15, priced at CA $426 found 6 days ago

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