SEA - CUN

C$ 303 Find Cheap Flights from Seattle to Cancun – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Cancún departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
C$ 695
Typical prices: C$ 590-C$ 1,080
Southwest
Sun 15/11Fri 20/11
SEA - CUN • 1 stop
Cheapest direct flights
C$ 922
Typical prices: C$ 536-C$ 1,056
Delta
Sun 15/11Fri 20/11
SEA - CUN • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Aeromexico AM Plus adds priority check-in, boarding, and luggage perks.
Delta has free Wi-Fi for SkyMiles members on domestic flights; Alaska speeds bags.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from C$ 695 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg C$ 526 (round-trip)
Shortest trip • 8h 12m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
+1
+1
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+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Cancún!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Seattle to Cancún (SEA-CUN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Cancún that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Cancún

Sun, 15 Nov - Fri, 20 Nov
Southwest Logo
6:15 a.m. - 4:35 p.m.
SEA
-
CUN
7h 20m
1 stop
Southwest Logo
2:10 p.m. - 12:30 a.m.
CUN
-
SEA
13h 20m
1 stop
C$ 695Southwest
Mon, 2 Nov - Thu, 12 Nov
Southwest Logo
5:15 a.m. - 7:45 p.m.
SEA
-
CUN
11h 30m
2 stops
Southwest Logo
1:50 p.m. - 12:40 a.m.
CUN
-
SEA
13h 50m
2 stops
C$ 701Southwest
Sun, 15 Nov - Fri, 20 Nov
Southwest Logo
6:15 a.m. - 4:35 p.m.
SEA
-
CUN
7h 20m
1 stop
Southwest Logo
1:50 p.m. - 12:40 a.m.
CUN
-
SEA
13h 50m
2 stops
C$ 701Southwest
Sun, 15 Nov - Fri, 20 Nov
Delta Logo
7:10 a.m. - 4:05 p.m.
SEA
-
CUN
5h 55mdirect
Delta Logo
5:15 p.m. - 9:00 p.m.
CUN
-
SEA
6h 45mdirect
C$ 922Delta
Fri, 13 Nov - Fri, 20 Nov
Delta Logo
7:10 a.m. - 4:05 p.m.
SEA
-
CUN
5h 55mdirect
Delta Logo
5:15 p.m. - 9:00 p.m.
CUN
-
SEA
6h 45mdirect
C$ 922Delta
Tue, 1 Dec - Wed, 9 Dec
Delta Logo
7:10 a.m. - 4:05 p.m.
SEA
-
CUN
5h 55mdirect
Delta Logo
5:15 p.m. - 9:00 p.m.
CUN
-
SEA
6h 45mdirect
C$ 922Delta
Sat, 22 Aug - Sat, 29 Aug
Volaris Logo
11:00 p.m. - 3:28 p.m.
SEA
-
CUN
14h 28m
1 stop
Volaris Logo
10:40 a.m. - 7:59 p.m.
CUN
-
SEA
11h 19m
1 stop
C$ 935Volaris
Sat, 22 Aug - Sat, 29 Aug
Volaris Logo
11:00 p.m. - 3:28 p.m.
SEA
-
CUN
14h 28m
1 stop
Volaris Logo
10:40 a.m. - 7:59 p.m.
CUN
-
SEA
11h 19m
1 stop
C$ 941Volaris
Thu, 10 Dec - Mon, 21 Dec
Alaska Airlines Logo
7:00 a.m. - 3:55 p.m.
SEA
-
CUN
5h 55mdirect
Alaska Airlines Logo
4:59 p.m. - 8:57 p.m.
CUN
-
SEA
6h 58mdirect
C$ 993Alaska Airlines
Sat, 9 Jan - Wed, 20 Jan
Alaska Airlines Logo
7:00 a.m. - 4:02 p.m.
SEA
-
CUN
6h 02mdirect
Alaska Airlines Logo
4:59 p.m. - 8:44 p.m.
CUN
-
SEA
6h 45mdirect
C$ 1,013Alaska Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Cancún flights

Get data-powered insights and trends into flights from Seattle to Cancún to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Seattle to Cancún?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Cancún departing in November.

Flight prices are typical for this route right now.

Flights to Cancún from Seattle usually cost between C$ 633 and C$ 1,017 in November.
The lowest price found in the past 5 days was C$ 695 on Southwest (15 Nov–20 Nov).

What is the cheapest month to fly from Seattle to Cancun?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Cancún, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Cancun is September, where tickets cost C$ 667 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is C$ 1,011 and C$ 939 respectively.

Can I save money by flying with a layover from Seattle to Cancun?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at C$ 247 on average.

How far in advance should I book a flight from Seattle to Cancun?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Cancún, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Cancun, you should book around 3 weeks before departure, which saves you about 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

Expert advice for your flight from Seattle to Cancún

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Aeromexico

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Brandon Schultz

Brandon Schultz

Expert on CUN

Brandon travels every week and makes friends with stray cats wherever he goes. Dogs, too... he once brought one home to the US from the Amalfi Coast. He’s written 6 books, visited 6 continents (still waiting on Antarctica), and would eat ice cream 6 times a day if he could. He lives in Brooklyn, New York, with his partner and three cats.

Good to know

Low season

September

Cheapest flight

C$ 303
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (22% more expensive on average)
Flight from Seattle to Cancun

When to book flights from Seattle to Cancún

Are your dates flexible? Find out the best times to travel from Seattle to Cancún based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Cancun

  • What is the cheapest flight from Seattle to Cancun?

    In the last 5 days, the lowest price for a flight from Seattle to Cancun was C$ 303 for a one-way ticket and C$ 695 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Cancun?

    Delta, Aeromexico, JetBlue, and Alaska Airlines offer inflight Wi-Fi service on the Seattle to Cancun flight route.

  • Which aircraft models fly most regularly from Seattle to Cancun?

    The Airbus A321neo is the aircraft model that flies most regularly on the Seattle to Cancun flight route.

  • Which airline alliances offer flights from Seattle to Cancun?

    oneworld, and SkyTeam are the airline alliances operating flights between Seattle and Cancun, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Cancun, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Seattle to Cancun are Alaska Airlines and Delta. With an average price for the route of C$ 906 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of C$ 755 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Seattle to Cancun?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Cancun.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Cancun?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cancun from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Cancun?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Cancun with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Cancun?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Cancun from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Cancun

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 458 or less one-way.

Reviews of the top 3 airlines flying from Seattle to Cancún

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Cancun. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Cancún? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12718 reviews
7.8Comfort
8.1Boarding
7.0Entertainment
7.0Food
8.5Crew
Airline reviews

Multi gate changes and flight delay were irritating. Food on board was terrible and expensive for what was offered.

8.0 ExcellentAnonymous, Jul 2026
SEA - BNA
Read more Alaska Airlines reviews

Multi gate changes and flight delay were irritating. Food on board was terrible and expensive for what was offered.

Overall the experience was good. Check in at the bag drop was challenging as the system was having issues and there was only one attendant helping the passengers. My personal experience was okay as it was straight forward but there were many who were having issues. The flight was good. I did not use the in flight entertainment very much as I had brought my own but it seemed to work well.

Technically this was the flight where they lost my bags, but I already explained that on the review for my connecting flight, so I'm not gonna do it again.

Hate the way they nickel and dime you on pricing. Extra for baggage, extra for a pre assigned seat. Make it one price and be done with it.

Delayed due aircraft maintenance. The plane was so small, hardly to get to the toilet when they’re serving food/drinks. But the ground crews were so helpful and trying their best to update all situation. The flight attendants not as friendly but fine.

Overall, it was a good flight. My only quip- they made us check our carry on bags when there was plenty of overhead space left. My wife and I thought maybe the aircraft was really full, but that wasn’t the case. There were a number of open seats, and even more overhead compartments with no luggage. A minor annoyance, sure, but when we intentionally didn’t check luggage to make it easier, it was disappointing to have to do it anyways.

You guys did great, the only thing keeping me from the higher rating is the physical dimensions of the seats, which staff has no control over. Keep up the good job.

I had to gate check my luggage and it was a pleasant experience as I never done that procedure before. Everything went smoothly.

The flight was comfortable and attendants were nice but the snacks could have been better.

Flight was delayed causing a chain of events here in Cancun

Everything worked smoothly, never had a concern with the flight from start to finish.

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Free Wi-Fi is good. That’s all - food mediocre, unfriendly crew, poor communication after trying to file a claim for my lost bag, which Delta didn’t even know was lost until I told them.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

Keep us informed of delays in a more timely manner

Caroline (Supervisor) was great! Salute to the employees like her!

Overall a good red eye. Crew chatted very loudly the whole time making it difficult to sleep.

The fly was 2 hours delayed and the plane was old and dirty. A very umcorfotable flight, which I won't recomend to anyone

Confusion over extra fees. Held up on ramp during boarding. Thin seat cushion. Minimal leg room.

The check-in is either at a kiosk that didn’t allow me to check-in because my middle name was not on the reservation or at an agent that cost $15.

They don’t give anything for free you have to pay for everything which it’s expected but at least give out water and a snack as a courtesy for flying with them.

The app doesn’t work. I am having a lot of trouble checking in for flight tomorrow. Very disconcerting. Then they es t to charge extra for checking in at the airport;(

Overall good flight. The flight attendants were annoying and unfriendly. They would ask me to grab someone else’s trash can just waiting until the person woke up or after the flight is done. It’s not my job to pick up someone else’s trash. Especially when it’s not easily reachable.

To many extra fees, poor customer service and very uncomfortable flight. No leg room and seat wont recline.

Delayed 2 hours. Boarding line took more than 30 minutes. Flight was really hot and made sleeping on a red eye impossible. Not a pleasant experience.

Viva Aerobus Is honesto the worst airline and I don't think I'll fly with them ever again.

Everything you need to know for your flight from Seattle to Cancún

Information on your arrival and departure airports