Cheap Flights to Great Diamond Island from HK$541

View HK$541 flight on Sat, 20 Sep 2025Opens in a new window

Popular airlines

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Great Diamond Island

Prices were available within the past 7 days and start at HK$541 for one-way flights and HK$1,006 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 21 Aug - Wed, 3 Sep
JFK
New York
PWM
Portland
HK$1,006 Return, found 21 hours ago
HK$1,006
Return
found 21 hours ago
Select Delta flight, departing Thu, 21 Aug from New York to Portland, returning Wed, 3 Sep, priced at HK$1,006 found 21 hours ago
Delta
Thu, 21 Aug - Wed, 3 Sep
JFK
New York
PWM
Portland
HK$1,158 Return, found 21 hours ago
HK$1,158
Return
found 21 hours ago
Select Delta flight, departing Thu, 21 Aug from New York to Portland, returning Wed, 3 Sep, priced at HK$1,158 found 21 hours ago
Delta
Thu, 21 Aug - Mon, 22 Sep
JFK
New York
PWM
Portland
HK$1,242 Return, found 22 hours ago
HK$1,242
Return
found 22 hours ago
Select Delta flight, departing Thu, 21 Aug from New York to Portland, returning Mon, 22 Sep, priced at HK$1,242 found 22 hours ago
Delta
Thu, 21 Aug - Wed, 3 Sep
JFK
New York
PWM
Portland
HK$1,492 Return, found 21 hours ago
HK$1,492
Return
found 21 hours ago
Select Delta flight, departing Thu, 21 Aug from New York to Portland, returning Wed, 3 Sep, priced at HK$1,492 found 21 hours ago
American Airlines
Sat, 20 Sep - Mon, 22 Sep
JFK
New York
PWM
Portland
HK$1,642 Return, found 22 hours ago
HK$1,642
Return
found 22 hours ago
Select American Airlines flight, departing Sat, 20 Sep from New York to Portland, returning Mon, 22 Sep, priced at HK$1,642 found 22 hours ago

Find the cheapest month to fly from Columbus (CMH) to Portland (PWM)

May is typically the cheapest month to fly

From HK$1,030 - HK$2,896 per traveller.

Graph displaying average flight prices per month

Frequently asked questions

How do I find cheap flights to Great Diamond Island that have flexible change policies?
We know that plans can change from one day to the next, so locking in a flexible fare with Expedia is always a clever idea. Tick the "No change fee" box directly under the "Flexible change policies" filter. Your low-priced, flexible flight to Great Diamond Island is only a few clicks away.
Which airlines fly to Great Diamond Island?
With a great range of airlines that fly into or near Great Diamond Island, you're spoiled for choice:

  • United Airlines - 316 flights to or near Great Diamond Island each month, including 316 flights to Portland Intl. Jetport Airport (PWM) per month.
  • Delta Air Lines - 294 flights to or near Great Diamond Island each month, including 294 flights to Portland Intl. Jetport Airport (PWM) per month.
  • American Airlines - 290 flights to or near Great Diamond Island each month, including 290 flights to Portland Intl. Jetport Airport (PWM) per month.

How can I find cheap tickets to Great Diamond Island?
In the last seven days, HK$1,006 was the lowest price for a flight to Great Diamond Island. For even bigger savings, book in advance and be flexible with your dates. Search for your flight to Great Diamond Island, then see prices for similar time frames by clicking on our "flexible dates" link.
How much is a flight to Great Diamond Island?
One-way flights taking off from New York (JFK) sold for just HK$541 in the last seven days. During this period, the price of a return airfare to Great Diamond Island ranged between HK$1,006 and HK$1,642. If you find a bargain ticket, book fast — these fares don't hang about.
What are the most popular airports to fly into in Great Diamond Island?
Start organising your Great Diamond Island trip by booking one of the 1,140 flights every month to Portland Intl. Jetport Airport (PWM). This is the region's main gateway.
When is the cheapest time to fly to Great Diamond Island?
If you're not fixed on what date you jet off to Great Diamond Island, try to fly out earlier in the week. The most economical day to take off is generally Tuesday, followed closely by Monday. Saturday is typically the most expensive day, with a lot of people opting to take off on the weekend.
How much is a plane ticket to Great Diamond Island?
Plane tickets to Great Diamond Island ranged from HK$1,006 to HK$1,642 in the last seven days. Typically, the quicker you book the bigger the bargain.
What months are the cheapest to book a flight to Great Diamond Island?
Book your ticket in February to enjoy awesome flight deals to Great Diamond Island. The month of December is often the most expensive time to buy an airfare.
Flights to Great Diamond Island information
Destination airport
Portland Intl. Jetport
Destination airport IATA code
PWM
Destination city name
Portland
Return price
HK$1,006
*Available to Expedia members.