Cheap Flights to Harstine Island from HK$863

View HK$863 flight on Sat, 15 Nov 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 Harstine Island

Prices were available within the past 7 days and start at HK$863 for one-way flights and HK$1,495 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 8 Oct - Tue, 14 Oct
YVR
Vancouver
SEA
Seattle
HK$1,495 Return, found 2 days ago
HK$1,495
Return
found 2 days ago
Select Delta flight, departing Wed, 8 Oct from Vancouver to Seattle, returning Tue, 14 Oct, priced at HK$1,495 found 2 days ago
United
Wed, 20 Aug - Sat, 23 Aug
YVR
Vancouver
SEA
Seattle
HK$1,643 Return, found 17 hours ago
HK$1,643
Return
found 17 hours ago
Select United flight, departing Wed, 20 Aug from Vancouver to Seattle, returning Sat, 23 Aug, priced at HK$1,643 found 17 hours ago
WestJet
Wed, 20 Aug - Sat, 23 Aug
YVR
Vancouver
SEA
Seattle
HK$1,694 Return, found 17 hours ago
HK$1,694
Return
found 17 hours ago
Select WestJet flight, departing Wed, 20 Aug from Vancouver to Seattle, returning Sat, 23 Aug, priced at HK$1,694 found 17 hours ago
Harbour Air Seaplanes
Mon, 6 Oct - Sun, 12 Oct
CXH
Vancouver
LKE
Seattle
HK$1,731 Return, found 6 hours ago
HK$1,731
Return
found 6 hours ago
Select Harbour Air Seaplanes flight, departing Mon, 6 Oct from Vancouver to Seattle, returning Sun, 12 Oct, priced at HK$1,731 found 6 hours ago
JetBlue Airways
Tue, 2 Sep - Tue, 9 Sep
BOS
Boston
SEA
Seattle
HK$2,220 Return, found 6 days ago
HK$2,220
Return
found 6 days ago
Select JetBlue Airways flight, departing Tue, 2 Sep from Boston to Seattle, returning Tue, 9 Sep, priced at HK$2,220 found 6 days ago

Find the cheapest month to fly from Columbus (CMH) to Seattle (SEA)

September is typically the cheapest month to fly

From HK$959 - HK$1,934 per traveller.

Graph displaying average flight prices per month

Frequently asked questions

How do I find cheap flights to Harstine Island that have flexible change policies?
When it comes to travelling these days, flexibility is key. That's why we have a "No change fee" filter to help you track down flexible, cheap tickets to Harstine Island. It's to the left of your screen directly below the "Flexible change policies" subheading.
Which airlines fly to Harstine Island?
You can choose from a variety of airlines that fly into or near Harstine Island. A few of the most well-known are:

  • Alaska Airlines - 8,781 flights to or near Harstine Island each month, including 8,781 flights to Seattle - Tacoma Intl. Airport (SEA) per month.
  • Delta Air Lines - 4,186 flights to or near Harstine Island each month, including 4,186 flights to Seattle - Tacoma Intl. Airport (SEA) per month.
  • United Airlines - 828 flights to or near Harstine Island each month, including 828 flights to Seattle - Tacoma Intl. Airport (SEA) per month.

How can I find cheap tickets to Harstine Island?
You'll always pick up an epic deal with Expedia, but our "flexible dates" search function makes it even easier. Enter your preferred flight date, then tick the flexible dates box above to see prices for nearby days. HK$1,495 was the lowest price for a flight to Harstine Island in the last seven days.
How much is a flight to Harstine Island?
One-way flights departing from Boston (BOS) sold for just HK$863 in the last seven days. During this time, the cost of a round-trip fare to Harstine Island varied between HK$1,495 and HK$4,927. If you spot a good deal, book immediately — these fares don't stick around for long.
What are the most popular airports to fly into in Harstine Island?
The principal gateway to Harstine Island, about 15,456 flights touch down at Seattle - Tacoma Intl. Airport (SEA) each month. Scout around for a rewarding deal, reserve your fare and get ready to experience this sensational region.
When is the cheapest time to fly to Harstine Island?
Consider jetting off early in the week to score the best deal to Harstine Island. Tuesday is generally the most cost-effective day to fly, with Monday running a close second. Saturday typically has the most expensive prices. This is because lots of travelers like to start their getaway on a weekend.
How much is a plane ticket to Harstine Island?
In the last seven days, plane tickets to Harstine Island varied between HK$1,495 and HK$4,927. Prices usually rise as your travel date nears, so secure a terrific deal today.
What months are the cheapest to book a flight to Harstine Island?
To score a low-cost flight to Harstine Island, try to book sometime in February when ticket prices are at their lowest. When's the most costly? In the United States, it's the month of December.
Flights to Harstine Island information
Destination airport
Seattle - Tacoma Intl.
Destination airport IATA code
SEA
Destination city name
Seattle
Return price
HK$1,081

Trending flights to Harstine Island

Prices were available within the past 7 days and start at HK$863 for one-way flights and HK$1,495 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Sun, 18 Jan - Sat, 7 Feb
HKG
Hong Kong SAR
SEA
Seattle
HK$4,927 Return, found 9 hours ago
HK$4,927
Return
found 9 hours ago
Select Korean Air flight, departing Sun, 18 Jan from Hong Kong SAR to Seattle, returning Sat, 7 Feb, priced at HK$4,927 found 9 hours ago
*Available to Expedia members.