Cheap flights from Seattle to Cancún from C$ 268

In general, September is the cheapest month to fly from Seattle to Cancún. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 636. The month of October is another great option to travel to Cancún, with average flight prices from Seattle averaging around C$ 636.

The cheapest day to depart from Seattle to Cancún is on a Thursday. Travellers who choose to depart for Cancún on a Thursday will often find tickets for as low as C$ 586. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 789. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cancún.

Our data shows that the cheapest Seattle to Cancún flights are usually those with departure times in the morning. Our users have found flights to Cancún in the morning for as low as C$ 687. Flights to Cancún are more costly in the evening, with an average ticket price of C$ 754. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Seattle/Tacoma Intl to Cancun for the best Seattle/Tacoma Intl - Cancun flight prices

You are more likely to see cheaper flights to Cancún from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around C$ 751 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cancún from Seattle for as low as C$ 647 on momondo.

There are 2 cabin classes available to choose from on Seattle/Tacoma Intl to Cancun flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 64% on your flight if you consider stops on a Seattle to Cancún flight.

As of March 2026, prices for Seattle to Cancún flights are approximately 27% cheaper when compared to flights at the same time last year.

Volaris and Frontier are the most popular carriers operating from Seattle/Tacoma Intl to Cancun

Delta, Aeromexico and Alaska Airlines are the top three most popular airlines that fly to Cancún from Seattle according to our data. Delta is the first choice among our users, with 44% of people opting to fly with this airline when travelling to Cancún. Keep in mind that there are 3 different airlines that fly to Cancún on a routine basis, so you have a few additional options to choose from.

As of March 2026, 4 flights take off from Seattle and land in Cancún each day. The most common flight departure time for this route is 7:00a.m., with 100% of daily flights taking off at noon.

33 flights are operational weekly from Seattle to Cancún as of March 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.