$112 Cheap Flights from Seattle (SEA) to Hamilton (YHM)

View $112 flight on Sun, Apr 26, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM)

Cheap Flights from Seattle to Hamilton (SEA-YHM)

Prices were available within the past 7 days and start at $112 for one-way flights and $294 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Jan 27 - Sat, Jan 31
SEA
Seattle
YHM
Hamilton
$294 Roundtrip, found 3 days ago
$294
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Jan 27 from Seattle to Hamilton, returning Sat, Jan 31, priced at $294 found 3 days ago
Air Canada
Wed, Nov 26 - Fri, Nov 28
SEA
Seattle
YHM
Hamilton
$305 Roundtrip, found 3 days ago
$305
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Nov 26 from Seattle to Hamilton, returning Fri, Nov 28, priced at $305 found 3 days ago
Air Canada
Tue, Nov 25 - Tue, Dec 2
SEA
Seattle
YHM
Hamilton
$315 Roundtrip, found 5 days ago
$315
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Nov 25 from Seattle to Hamilton, returning Tue, Dec 2, priced at $315 found 5 days ago
Air Canada
Tue, Dec 30 - Mon, Jan 5
SEA
Seattle
YHM
Hamilton
$326 Roundtrip, found 5 days ago
$326
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Dec 30 from Seattle to Hamilton, returning Mon, Jan 5, priced at $326 found 5 days ago
Alaska Airlines
Tue, Nov 25 - Sat, Nov 29
SEA
Seattle
YHM
Hamilton
$373 Roundtrip, found 6 days ago
$373
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Nov 25 from Seattle to Hamilton, returning Sat, Nov 29, priced at $373 found 6 days ago
Air Canada
Tue, Jan 27 - Sat, Jan 31
SEA
Seattle
YHM
Hamilton
$380 Roundtrip, found 3 days ago
$380
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Jan 27 from Seattle to Hamilton, returning Sat, Jan 31, priced at $380 found 3 days ago
Air Canada
Sat, Nov 29 - Mon, Dec 1
SEA
Seattle
YHM
Hamilton
$384 Roundtrip, found 3 hours ago
$384
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Sat, Nov 29 from Seattle to Hamilton, returning Mon, Dec 1, priced at $384 found 3 hours ago
Air Canada
Wed, Nov 26 - Fri, Nov 28
SEA
Seattle
YHM
Hamilton
$390 Roundtrip, found 3 days ago
$390
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Nov 26 from Seattle to Hamilton, returning Fri, Nov 28, priced at $390 found 3 days ago
Air Canada
Wed, Nov 26 - Mon, Dec 1
SEA
Seattle
YHM
Hamilton
$395 Roundtrip, found 5 days ago
$395
Roundtrip
found 5 days ago
Select Air Canada flight, departing Wed, Nov 26 from Seattle to Hamilton, returning Mon, Dec 1, priced at $395 found 5 days ago
WestJet
Mon, Apr 27 - Fri, May 1
SEA
Seattle
YHM
Hamilton
$725 Roundtrip, found 5 days ago
$725
Roundtrip
found 5 days ago
Select WestJet flight, departing Mon, Apr 27 from Seattle to Hamilton, returning Fri, May 1, priced at $725 found 5 days ago

Alternative airports near Hamilton

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

Select flight to Region of Waterloo Intl. YKF. Cheapest option available. Average driving time to city center is 57 minutes. Flights from $439
YKF
Region of Waterloo Intl.
Cheapest
Average driving time to city center57 min
Flights from $439

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM) cost?
Secure a cheap one-way flight from $112 or cheap return flight from $294 from Seattle - Tacoma Intl. Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM)?
January is the least expensive month to fly from SEA to YHM. Planning your trip for the off-season is often the key to better flight prices.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM)?
To find the cheapest airline that'll fly you from SEA to YHM, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM)?
There are no daily direct flights from Seattle - Tacoma Intl. Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from SEA to YHM?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on various factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM)?
To reach John C. Munro Hamilton Intl. Airport (YHM) without delays, book a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Hamilton from Seattle - Tacoma Intl. Airport (SEA)?
If you're traveling on a direct flight from Seattle - Tacoma Intl. Airport (SEA) to Hamilton, Pearson Intl. Airport (YYZ) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM) last-minute?
Booking your ticket from SEA to YHM shortly before your journey is usually more expensive. But if there's some wiggle room with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a SEA to YHM flight and hotel package?
Compared with arranging flights and hotels separately, booking a SEA to YHM flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place takes the hassle out of travel planning. Simply secure your flights and select from our wide range of hotels, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to John C. Munro Hamilton Intl. Airport (YHM)?
It's usually possible to cancel or reschedule your SEA to YHM flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
John C. Munro Hamilton Intl.
Airlines serving
Air Canada, WestJet
Roundtrip price
$293
Distance
2054 mi

Book with confidence

Seattle to Hamilton Flights

The cheapest times to fly from Seattle to Hamilton

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Hamilton are during the month of January. You can find some of the cheapest flights from Seattle to Hamilton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Hamilton

Sunday is one of the best days to book for cheap flights from Seattle to Hamilton: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Hamilton

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Hamilton in 2025. You can also book with separate airlines for your outbound and return journeys, from $112 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Hamilton flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Hamilton airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Hamilton Flights

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*Available to One Key members.