SEA - CUN

C$ 238 Find Cheap Flights from Seattle to Cancún

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 9/2. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Cancún

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Cancún, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Cancún, as well as popular online travel agencies
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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

Mon, 26 Jan - Fri, 30 Jan
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$ 506Delta
Find Deal
Sun, 11 Jan - Sat, 17 Jan
Delta Logo
10:25 p.m. - 1:30 p.m.SEA-CUN
12h 05m1 stop
Delta Logo
5:15 p.m. - 9:00 p.m.CUN-SEA
6h 45mdirect
C$ 512Delta
Find Deal
Wed, 18 Feb - Wed, 25 Feb
Delta Logo
4:55 p.m. - 11:05 a.m.SEA-CUN
15h 10m2 stops
Delta Logo
6:06 a.m. - 7:55 p.m.CUN-SEA
16h 49m1 stop
C$ 519Delta
Find Deal
Mon, 26 Jan - Sat, 31 Jan
United Airlines Logo
7:30 p.m. - 7:13 a.m.SEA-CUN
8h 43m1 stop
United Airlines Logo
8:39 a.m. - 6:28 p.m.CUN-SEA
12h 49m2 stops
C$ 533United Airlines
Find Deal
Thu, 13 Nov - Mon, 17 Nov
Multiple Airlines Logo
12:58 p.m. - 11:36 a.m.SEA-CUN
19h 38m2 stops
Multiple Airlines Logo
12:16 p.m. - 11:25 p.m.CUN-SEA
14h 09m1 stop
C$ 547Multiple Airlines
Find Deal
Sat, 15 Nov - Thu, 20 Nov
Multiple Airlines Logo
12:58 p.m. - 11:36 a.m.SEA-CUN
19h 38m2 stops
Multiple Airlines Logo
7:40 p.m. - 10:22 a.m.CUN-SEA
17h 42m1 stop
C$ 551Multiple Airlines
Find Deal
Sat, 21 Feb - Wed, 25 Feb
United Airlines Logo
5:00 a.m. - 5:50 p.m.SEA-CUN
9h 50m2 stops
United Airlines Logo
4:51 p.m. - 11:00 p.m.CUN-SEA
9h 09m1 stop
C$ 579United Airlines
Find Deal
Wed, 31 Dec - Thu, 8 Jan
Alaska Airlines Logo
10:50 p.m. - 7:40 a.m.SEA-CUN
5h 50mdirect
Alaska Airlines Logo
4:00 p.m. - 7:48 p.m.CUN-SEA
6h 48mdirect
C$ 596Alaska Airlines
Find Deal
Wed, 31 Dec - Thu, 8 Jan
Alaska Airlines Logo
8:11 p.m. - 4:03 p.m.SEA-CUN
16h 52m1 stop
Alaska Airlines Logo
4:00 p.m. - 7:48 p.m.CUN-SEA
6h 48mdirect
C$ 601Alaska Airlines
Find Deal
Wed, 14 Jan - Fri, 23 Jan
American Airlines Logo
10:45 a.m. - 1:22 p.m.SEA-CUN
23h 37m2 stops
American Airlines Logo
5:08 p.m. - 11:51 p.m.CUN-SEA
9h 43m1 stop
C$ 608American Airlines
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
Alaska Airlines' Wine Flies Free program is a perk.
Expect quick immigration at Cancun due to renovations.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Delta
Cheapest • from C$ 506 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 9% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 18% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 506
Overall average: C$ 715
Delta
Mon 26/1Fri 30/1
SEA - CUN • Direct
Cheapest direct flights
C$ 506
Typical prices: C$ 643-C$ 815
Delta
Sun 11/1Sat 17/1
SEA - CUN • Direct
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Cancún!
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.

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

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 Cancún is September, where tickets cost C$ 659 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is C$ 1,099 and C$ 909 respectively.

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

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.

No, with an average price for the route of C$ 503, prices are generally cheapest when you fly direct.

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

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 Cancún, you should book around 3 weeks before departure, which saves you about 9% 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

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Aeromexico

AM Plus offers priority check-in, boarding, and luggage with discounted lounge access.


Aeromexico's Wi-Fi is fast enough for streaming and offers free text messaging.

Alaska Airlines

Alaska Airlines offers a 20-minute baggage guarantee for timely luggage delivery.


Alaska Airlines' Wine Flies Free program allows free wine check-in from select US airports.

Delta

Delta offers free Wi-Fi for SkyMiles members on domestic flights.


Delta's Sky Priority check-in serves premium cabin and elite status passengers.

Read more about Deltaby Stefanie Waldek
Airports
SEA

Use the SEA Spot Saver for expedited security screening. Book online or via the flySEA app for a smoother departure.

Read more about SEAby Harriet Baskas
CUN

Expect quick immigration at CUN due to recent renovations. Automated passport checks reduce wait times to 5–15 minutes.

Read more about CUNby Brandon Schultz
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Aeromexico

Marisa Garcia

Marisa Garcia

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet Baskas

Harriet Baskas

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.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek

Stefanie Waldek

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.

Read more
Brandon Schultz

Brandon Schultz

Expert on CUN

Brandon Schultz

Brandon Schultz

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.

Read more

Good to know

Low seasonSeptember
Cheapest flightC$ 238
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (11% 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 Cancún?

    In the last 3 days, the lowest price for a flight from Seattle to Cancún was C$ 238 for a one-way ticket and C$ 506 for a round-trip.

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

    Alaska Airlines, Aeromexico, and Delta 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.

  • On which days can I fly direct from Seattle to Cancun?

    There are direct flights from Seattle to Cancun on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Seattle to Cancún are Alaska Airlines and Delta. With an average price for the route of C$ 757 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of C$ 748 and an overall rating of 7.9.

  • 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.

Prefer to fly direct from Seattle to Cancun?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Cancun.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Cancun Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Cancun

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more nonstop flights

Direct returns

Cancun to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more nonstop flights

Reviews of the top 3 airlines flying from Seattle to Cancún

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Cancún. 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.
8.0
Alaska AirlinesOverall score based on 11199 reviews
8.1Boarding
7.1Food
8.5Crew
7.0Entertainment
7.8Comfort
Airline reviews

Its bumpy but I can say its safe flight ,Thanks Alaska airline for bringing me in my destination😊.

8.0 ExcellentMary Grace, Oct 2025SEA - BNA
Read more Alaska Airlines reviews

Its bumpy but I can say its safe flight ,Thanks Alaska airline for bringing me in my destination😊.

Almost 3 hr delay in Settle with very little information available to passengers. They boarded the plane and we waited for a long time inside the plane as well.

This was our first time flying with Alaska. It was a seamless experience, with comfortable seats and leg room. Staff were friendly and helpful.

Flight on time. Crew good. Seating Bad. Have to pay extra on a not cheap flight to avoid being next to toilet.

The crew was great! Passengers were nice. Just an fyi that I heard several of them complain that the snack was not gluten free. Many people got handed the snack and then promptly gave it back to the flight attendant. Might be good to look into another option as such a high percentage of people in CO and WA are gf. Cheers!

Food and entertainment not applicable - standard drinks and cinnamon cookies; crew did not do a song and dance for us so no entertainment. I like the slightly better leg room than American Airlines - at least it felt that way. Flight crew and atmosphere seemed more welcoming than American, too.

It was fine, mostly I was just happy to be on my last leg home. No in flight entertainment but that's forgivable since it was only a 2 hour flight.

Was delayed in Newark 24 hours due to mechanical problems. The staff was very helpful in trying to make the best of a trying situation. In SeaTac, they changed gates and times. Usually have no problems from SeaTac.

Flight was cancelled, then rebooked on a flight that I was unable to get through since they had closed the gate.

Terrible. We were bumped off our flight to another and weren't sent notice until we were on our prior flight. We got home four hours later and the airline couldn't have cared less.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

Food was surprisingly good but the WiFi was not great

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

Overpriced tickets and attitudes to pay for such service. So bummed.

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

It was an overnight flight and I desperately needed coffee before we landed, but Delta does only one beverage service, and that is shortly after takeoff, not before landing at 5 am.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

The crew was wonderful and attentive. The seats near exit row were restrictive. Offer healthy snacks please

Aeroméxico cancelled my ticket without advice AND It make a last minute mess in my intinerary, no solving my situation, bad advice and bad customer service

The ground staff were not as friendly and nice to the passengers as the air crew. Flight attendants, cockpit crew were great and very nice to everyone on board.

My flight was delayed, then I got transferred to a new flight that was also delayed- which wasn’t Aeromexico’s fault, it was because of weather conditions. Most of the crew was very nice and patient, except for one or two flight attendants who were rude. The entertainment wasn’t on, so all the screens were off.

My wife's entertainment system did not work. Payed for flight upgrade but did not receive advertised "free WiFi".

Annoying that we had to go to departures and get boarding passes. Should allow us to be booked all the way through, this is the only airline i have this problem with in MEX. Late boarding and take off

Lousy No wheelchair. As normal at Atlanta Cheap airline Cheap aero plane. - Neither entertainment nor food on a 5 hour saga

The airplane was an old airplane, seats were very uncomfortable and very little space, they changed my seat and that was no option to get back into my seat even when I was traveling a senior who required assistance.

This is not a low cost airline. Stop acting like o e.

Aeromexico crew made me check my hand luggage in the door of the plane. As soon as I reach Mexico City, I notice that my luggage was opened and 8 games of Nintendo Switch were stolen (700 dllrs value aprox) (the console was there) but the games were stolen. I am very dissapointed of Aeromexico and all the crew. Instead of being a good trip, It was a sad trip

Ok. But we arrived to a remote terminal which meant that a bus had to take us to the terminal building

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

Information on your arrival and departure airports

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