$158 Cheap Flights from Seattle (SEA) to Cancun (CUN)

View $158 flight on Sun, Sep 7, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Cancun Intl. Airport (CUN)

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Cheap Flights from Seattle to Cancun (SEA-CUN)

Prices were available within the past 7 days and start at $158 for one-way flights and $338 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bargain Flight
Sun, Oct 19 - Wed, Oct 22
SEA
Seattle
CUN
Cancun
$338 Roundtrip, found 1 day ago
$338
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Sun, Oct 19 from Seattle to Cancun, returning Wed, Oct 22, priced at $338 found 1 day ago
Delta
Fri, Oct 24 - Fri, Oct 31
SEA
Seattle
CUN
Cancun
$339 Roundtrip, just found
$339
Roundtrip
just found
Select Delta flight, departing Fri, Oct 24 from Seattle to Cancun, returning Fri, Oct 31, priced at $339 just found
Aeromexico
Mon, Sep 15 - Fri, Sep 19
SEA
Seattle
CUN
Cancun
$339 Roundtrip, just found
$339
Roundtrip
just found
Select Aeromexico flight, departing Mon, Sep 15 from Seattle to Cancun, returning Fri, Sep 19, priced at $339 just found
Hawaiian Airlines
Sun, Oct 19 - Wed, Oct 29
SEA
Seattle
CUN
Cancun
$339 Roundtrip, found 7 hours ago
$339
Roundtrip
found 7 hours ago
Select Hawaiian Airlines flight, departing Sun, Oct 19 from Seattle to Cancun, returning Wed, Oct 29, priced at $339 found 7 hours ago
Aeromexico
Wed, Sep 17 - Sat, Sep 27
SEA
Seattle
CUN
Cancun
$342 Roundtrip, just found
$342
Roundtrip
just found
Select Aeromexico flight, departing Wed, Sep 17 from Seattle to Cancun, returning Sat, Sep 27, priced at $342 just found
Aeromexico
Mon, Sep 15 - Fri, Sep 19
SEA
Seattle
CUN
Cancun
$343 Roundtrip, just found
$343
Roundtrip
just found
Select Aeromexico flight, departing Mon, Sep 15 from Seattle to Cancun, returning Fri, Sep 19, priced at $343 just found
Spirit Airlines
Tue, Jul 15 - Wed, Jul 30
SEA
Seattle
CUN
Cancun
$345 Roundtrip, found 7 hours ago
$345
Roundtrip
found 7 hours ago
Select Spirit Airlines flight, departing Tue, Jul 15 from Seattle to Cancun, returning Wed, Jul 30, priced at $345 found 7 hours ago
American Airlines
Mon, Sep 15 - Fri, Sep 19
SEA
Seattle
CUN
Cancun
$346 Roundtrip, just found
$346
Roundtrip
just found
Select American Airlines flight, departing Mon, Sep 15 from Seattle to Cancun, returning Fri, Sep 19, priced at $346 just found
American Airlines
Mon, Oct 13 - Thu, Oct 16
SEA
Seattle
CUN
Cancun
$348 Roundtrip, just found
$348
Roundtrip
just found
Select American Airlines flight, departing Mon, Oct 13 from Seattle to Cancun, returning Thu, Oct 16, priced at $348 just found
Aeromexico
Mon, Sep 15 - Fri, Sep 19
SEA
Seattle
CUN
Cancun
$352 Roundtrip, just found
$352
Roundtrip
just found
Select Aeromexico flight, departing Mon, Sep 15 from Seattle to Cancun, returning Fri, Sep 19, priced at $352 just found

Find the cheapest month to fly from Seattle (SEA) to Cancun (CUN)

September is typically the cheapest month to fly

From $309 - $392 per traveler.

Graph displaying average flight prices per month

Alternative airports near Cancun

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

Select flight to Cancun Intl. CUN. Cheapest and Closest option available. Average driving time to city center is 18 minutes. Flights from $417
CUN
Cancun Intl.
CheapestClosest
Average driving time to city center18 min
Flights from $417
Flights from Seattle (SEA) to Cancun (CUN)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Cancun Intl.
Airlines serving
Aeromexico, Air Canada, Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United, Volaris
Roundtrip price
$337
Distance
2683 mi
Average flight time
4 hours 50 mins

Seattle to Cancun Flights

The cheapest times to fly from Seattle to Cancun

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 Cancun are during the month of October. You can find some of the cheapest flights from Seattle to Cancun with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Cancun

Sunday is one of the best days to book for cheap flights from Seattle to Cancun: 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 Cancun

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 Cancun in 2025. You can also book with separate airlines for your outbound and return journeys, from $158 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 Cancun 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 Cancun 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.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN) cost?
You'll find cheap return tickets from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN) starting at $329. Book your seat and start your adventure. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Aeromexico flight leaving SEA on July 13 2025 and touching down at CUN. The price was last updated on June 19 2025 and has not changed since.
What is the cheapest month to fly from SEA to CUN?
Catch a direct flight from SEA to CUN in October to land cheaper fares. You can find a one-way Delta flight for $158 leaving on October 31 2025. This price is based on the cheapest direct flight found on Expedia for this route in the next 330 days. The price was last updated on June 19 2025 and remains unchanged.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN)?
Fly directly from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN) on a Delta Air Lines flight.
What is the cheapest airline that flies from SEA to CUN?
Travel from SEA to CUN with Delta. This airline currently offers the lowest one-way fare for this route, starting at $158. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SEA on September 13 2025. Prices were last updated on June 19 2025 and have not changed since.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN)?
Each day on average, 2 nonstop flights operate from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN). Choose the departure date that fits your schedule best.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN)?
Flights between SEA and CUN are their busiest at 7 AM. For a more relaxed atmosphere and potentially cheaper fares, look for a time when demand is lower.
What day of the week has the most flights from SEA to CUN?
Fly on a Friday if you're after the biggest selection of flights from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN).
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN)?
Seattle - Tacoma Intl. Airport (SEA)'s first flight to Cancun Intl. Airport (CUN) takes off at approximately 7:00AM UTC-8. With a flight time of 6h, you'll arrive at around 4:00PM UTC-5.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN)?
It takes about 5 hours and 56 minutes to travel the 2,700 mi from SEA to CUN.
What airline has the least delays from SEA to CUN?
Consider booking with Delta Air Lines if you'd like to go straight from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN) without any interruptions. This airline has the strongest track record for punctuality, with an on-time performance of 94%. Want to be notified if anything changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN)?
Book a flight from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN) that takes off before 3 PM to reduce the likelihood of delays. Departures after this time are on average 22% more likely to be canceled.**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 Cancun from Seattle - Tacoma Intl. Airport (SEA)?
Cancun Intl. Airport (CUN) is the only airport in Cancun with direct flights from Seattle - Tacoma Intl. Airport (SEA). Check out the available options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN) last-minute?
Booking your plane ticket from SEA to CUN right before your getaway is usually more expensive. However, if there's some wiggle room with your schedule, you could land a cheap last-minute fare.
Is it cheaper to book a SEA to CUN flight and hotel package?
You'll typically save money by securing a SEA to CUN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your ideal accommodations and flights, you can add extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Cancun Intl. Airport (CUN)?
If you booked your SEA to CUN flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

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*Available to One Key members.