$44 Cheap Flights to Mercer Island, WA

View $44 flight on Wed, May 13, 2026Opens in a new window

Popular airlines to Mercer Island

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How much is the cheapest flight to Mercer Island?

Prices were available within the past 7 days and start at $44 for one-way flights and $72 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Harbour Air Seaplanes
Sat, May 30 - Mon, Jun 1
CXH
Vancouver
LKE
Seattle
$218 Roundtrip, found 3 days ago
$218
Roundtrip
found 3 days ago
Select Harbour Air Seaplanes flight, departing Sat, May 30 from Vancouver to Seattle, returning Mon, Jun 1, priced at $218 found 3 days ago
Harbour Air Seaplanes
Fri, Aug 14 - Tue, Aug 18
YWH
Victoria
LKE
Seattle
$219 Roundtrip, found 5 days ago
$219
Roundtrip
found 5 days ago
Select Harbour Air Seaplanes flight, departing Fri, Aug 14 from Victoria to Seattle, returning Tue, Aug 18, priced at $219 found 5 days ago
Harbour Air Seaplanes
Fri, Aug 21 - Sat, Aug 22
YWH
Victoria
LKE
Seattle
$220 Roundtrip, found 1 day ago
$220
Roundtrip
found 1 day ago
Select Harbour Air Seaplanes flight, departing Fri, Aug 21 from Victoria to Seattle, returning Sat, Aug 22, priced at $220 found 1 day ago
Harbour Air Seaplanes
Fri, May 29 - Sun, May 31
CXH
Vancouver
LKE
Seattle
$237 Roundtrip, found 3 days ago
$237
Roundtrip
found 3 days ago
Select Harbour Air Seaplanes flight, departing Fri, May 29 from Vancouver to Seattle, returning Sun, May 31, priced at $237 found 3 days ago
Harbour Air Seaplanes
Mon, Jul 6 - Sun, Jul 19
CXH
Vancouver
LKE
Seattle
$238 Roundtrip, found 5 days ago
$238
Roundtrip
found 5 days ago
Select Harbour Air Seaplanes flight, departing Mon, Jul 6 from Vancouver to Seattle, returning Sun, Jul 19, priced at $238 found 5 days ago

Alternative airports near Mercer Island

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Flights from $319
SEA
Seattle - Tacoma Intl.
Cheapest
Flights from $319
Select flight to Snohomish County - Paine Field PAE. Flights from $785
PAE
Snohomish County - Paine Field
Flights from $785

Frequently asked questions

What month is the cheapest to fly to Mercer Island?
May is the cheapest month to fly to Mercer Island. There's less demand then, so fares are generally more affordable. Organizing your trip outside of public and school holidays can also help you save.
Which US cities have the cheapest flights to Mercer Island?
Get cheap flights to Mercer Island from Portland, Anchorage and Phoenix. These cities typically offer the best fares to this much-loved destination. But keep in mind that demand, seasonality and stopovers will also impact rates, so stay flexible and book when you spot a bargain.
Which US cities fly direct to Mercer Island?
There are 83 US destinations where you can fly to Mercer Island nonstop from. Explore your options by using the "Direct flights only" box on Expedia and pick the best starting point for you. Here are several of the top cities to set off from:

  • Portland
  • Anchorage
  • Phoenix
  • Los Angeles
  • Spokane

How to find a cheap flight to Mercer Island?
To lock in cheap flights to Mercer Island, book well in advance and visit during the off-peak months of January and November. Want an insider tip? Leave on a Thursday and save around 16% on average compared to traveling on a Sunday.* Opt to receive price alerts on the Expedia app and we'll get in touch as soon as your fares drop.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to Mercer Island?
Although booking in advance is generally the easiest way to save money, don't panic if your Mercer Island trip is last minute. You can still find cheap flights to Mercer Island, especially if your plans have some flexibility. Try switching up your dates, looking at different ticket options or departing from an alternative airport.
How far in advance should I book a flight to Mercer Island?
Secure the departure dates you want and a price you'll love by booking your domestic flight to Mercer Island up to 28 days in advance. Search for tickets two to four months ahead if you're headed to Mercer Island from an international destination.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to Mercer Island?
You can generally get cheap flights to Mercer Island on a Sunday. Travelers can save about 8% on average compared to those who book on a Friday, which is typically the most expensive day to purchase tickets.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to Mercer Island?
There are 31 airlines connecting Mercer Island with 118 airports all over the world. The primary gateway to this city is Seattle - Tacoma Intl. Airport (SEA). Fly with any of these leading airlines to Mercer Island:

  • Alaska Airlines
  • Delta Air Lines
  • American Airlines
  • United Airlines

Where do you fly into Mercer Island?
Mercer Island's main airport is Seattle - Tacoma Intl. Airport (SEA). If you're looking for some nearby alternatives when flying to Mercer Island, check out Boeing Field Airport (BFI), Renton Municipal Airport (RNT) or Kenmore Air Harbor Airport (KEH). You can also fly to Mercer Island through Poulsbo, WA (PUL).
How far is the airport from central Mercer Island?
Landing at Seattle - Tacoma Intl. Airport (SEA) puts you approximately 9 mi southwest of the center of Mercer Island.
Can I save money by booking a Mercer Island trip package?
Book a Mercer Island flight and hotel package deal on Expedia, and you can enjoy significant savings. It's a breeze to bundle your flight and hotel, and you can even add car rentals and activities to create your own customized Mercer Island break. Plus, nothing beats the convenience of booking everything in one place.
Can I change or cancel my flight to Mercer Island?
It's usually possible to change or cancel your flight to Mercer Island. Many airlines allow you to cancel your ticket for free within 24 hours of making your booking. However, some flights are non-refundable, and airlines may issue you a credit toward a future flight rather than a direct refund. To find cheap flights to Mercer Island with flexible change policies, check the "Changes included" or "No cancel fee" filters during your search. Need more information? Go to our Customer Service Portal.

*Flight schedules are subject to change.

*Available to One Key members.

 

Travel information

Destination airport
Lake Union Seaplane Base
Destination airport IATA code
LKE
Destination city name
Seattle
Roundtrip price
$218

Trending flights to Mercer Island

Prices were available within the past 7 days and start at $44 for one-way flights and $72 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Jun 3 - Tue, Jun 9
LAX
Los Angeles
SEA
Seattle
$72 Roundtrip, found 2 hours ago
$72
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Wed, Jun 3 from Los Angeles to Seattle, returning Tue, Jun 9, priced at $72 found 2 hours ago

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