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Cheap flights from Seattle to Cancún from C$ 238

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CUN
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights from Seattle to Cancún
Explore the most affordable flight options available from Seattle to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2025.

Mon 10/117:11 a.m.SEA - CUN
Nonstop5h 54mDelta
Thu 13/115:15 p.m.CUN - SEA
Nonstop6h 40mDelta
Deal found 27/10C$ 521
Sat 1/113:45 p.m.SEA - CUN
1 stop18h 30mDelta
Fri 7/115:10 p.m.CUN - SEA
Nonstop6h 35mDelta
Deal found 27/10C$ 522
Sat 8/1111:55 p.m.SEA - CUN
1 stop11h 13mDelta
Thu 13/115:15 p.m.CUN - SEA
Nonstop6h 40mDelta
Deal found 27/10C$ 526
Thu 13/1112:58 p.m.SEA - CUN
2 stops19h 38mMultiple Airlines
Mon 17/1112:16 p.m.CUN - SEA
1 stop14h 09mMultiple Airlines
Deal found 26/10C$ 547
Sat 15/1112:58 p.m.SEA - CUN
2 stops19h 38mMultiple Airlines
Thu 20/117:40 p.m.CUN - SEA
1 stop17h 42mMultiple Airlines
Deal found 26/10C$ 551
Thu 13/1112:58 p.m.SEA - CUN
2 stops19h 38mMultiple Airlines
Tue 18/1112:31 p.m.CUN - SEA
1 stop11h 04mMultiple Airlines
Deal found 26/10C$ 556
Thu 13/1112:58 p.m.SEA - CUN
2 stops19h 38mMultiple Airlines
Wed 19/1112:31 p.m.CUN - SEA
1 stop13h 54mMultiple Airlines
Deal found 26/10C$ 561
Sat 15/115:59 p.m.SEA - CUN
1 stop14h 37mMultiple Airlines
Mon 17/1112:16 p.m.CUN - SEA
1 stop14h 09mMultiple Airlines
Deal found 26/10C$ 568
Sat 15/115:59 p.m.SEA - CUN
1 stop14h 37mMultiple Airlines
Tue 18/1112:31 p.m.CUN - SEA
1 stop11h 04mMultiple Airlines
Deal found 26/10C$ 575
Wed 31/125:02 a.m.SEA - CUN
1 stop7h 48mUnited Airlines
Tue 13/18:39 a.m.CUN - SEA
2 stops12h 35mUnited Airlines
Deal found 26/10C$ 588
Fri 14/115:59 p.m.SEA - CUN
1 stop14h 37mMultiple Airlines
Tue 18/1112:31 p.m.CUN - SEA
1 stop13h 54mMultiple Airlines
Deal found 26/10C$ 591

Cheap flight deals from Seattle to Cancún

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Cancún (CUN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 October 2025.

Round-trip from

C$ 507

One-way from

C$ 238

Popular in

December

Cheapest in

September

Average price

C$ 680
Delta
  • Delta
  • 30/1-3/2
  • Nonstop
  • 12h 40m total
  • Seattle to Cancún
Search Deals
Delta
  • Delta
  • 25/1
  • Nonstop
  • 5h 55m total
  • Seattle to Cancún
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Cancún that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 27 October 2025.
Use the filters below to find and compare flights from Seattle to Cancún that are best for you.

Fly from

Seattle

Fly to

Cancún

Route

Depart

Return

Price

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sun 11/1

7:10 a.m.-4:05 p.m.

Nonstop5h 55m

Cancun

Sat 17/1

5:15 p.m.-9:00 p.m.

Nonstop6h 45m

C$ 507

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Mon 19/1

7:10 a.m.-4:05 p.m.

Nonstop5h 55m

Cancun

Fri 23/1

5:15 p.m.-9:00 p.m.

Nonstop6h 45m

C$ 507

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Fri 30/1

7:10 a.m.-4:05 p.m.

Nonstop5h 55m

Cancun

Tue 3/2

5:15 p.m.-9:00 p.m.

Nonstop6h 45m

C$ 507

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 20/1

10:25 p.m.-1:30 p.m.

1 stop12h 05m

Cancun

Fri 23/1

11:20 a.m.-7:55 p.m.

1 stop11h 35m

C$ 507

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sat 17/1

6:15 a.m.-9:11 p.m.

1 stop11h 56m

Cancun

Fri 23/1

5:15 p.m.-9:00 p.m.

Nonstop6h 45m

C$ 507

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Thu 15/1

4:05 p.m.-9:58 a.m.

1 stop14h 53m

Cancun

Fri 23/1

1:28 p.m.-7:55 p.m.

1 stop9h 27m

C$ 512

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sun 4/1

7:10 a.m.-4:10 p.m.

Nonstop6h 00m

C$ 238

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Thu 22/1

7:10 a.m.-4:05 p.m.

Nonstop5h 55m

C$ 238

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 27/1

7:10 a.m.-4:05 p.m.

Nonstop5h 55m

C$ 238

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sun 18/1

7:20 a.m.-4:15 p.m.

Nonstop5h 55m

C$ 238

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/10

Showing 1-10 of 18 results
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Best time to book a flight from Seattle to Cancún

Have a flexible travel schedule? Discover the best time to fly to Cancún from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Cancún. Price data was last updated on 24 October 2025.

The price you pay for your flight from Seattle to Cancún may vary depending on when you book. For the best chance of a lower fare, look to book 25 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Cancún?

Currently, August is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 257). Flying from Seattle to Cancún in December is currently the most expensive (average of C$ 570). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to CUN?

Find hourly flight availability from Seattle to Cancún. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 October 2025.

When flying from Seattle to Cancún, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Cancún

Get insights into the airlines that provide service to Cancún. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cancún. Reviews last updated 27 October 2025.
Read through reviews of airlines operating flights from Seattle to Cancún, such as Alaska Airlines,Delta, andAeromexico. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,194 reviews
Check prices

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,194 reviews
Alaska Airlines
8.0
Very good
11,194 reviews
Check prices

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
7,994 reviews
Alaska Airlines
8.0
Very good
11,194 reviews
Check prices

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Aeromexico
7.5
Good
1,678 reviews
Alaska Airlines
8.0
Very good
11,194 reviews
Check prices

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Cancún. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Seattle to Cancún?

    If you wish to fly to Cancún from Seattle, then you need to book flights from Seattle/Tacoma Intl to Cancun. There are 3 flights from Seattle/Tacoma Intl (SEA) to Cancun (CUN) per day to choose from. Flights to Cancún from Seattle/Tacoma Intl are available from 3 different airlines, which means you should have some options if you want to compare airfare deals. 5h 46m is how long a nonstop flight from Seattle to Cancun typically takes.

  • How popular is this Seattle to Cancún flight route?

    The Seattle/Tacoma Intl to Cancun flight path was viewed by 74 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Cancún?

    Delta can get you from Seattle to Cancún in just under 5h 55m. Your travel time will be generally consistent. The distance between Seattle and Cancún is about 4318 km. Most flights are nonstop.

  • What are the cheapest airlines flying from Seattle to Cancún round-trip?

    Delta, at C$ 400, was found to be the cheapest airline from Seattle to Cancún.Alternate airlines to your destination round-trip include Aeromexico and Alaska Airlines. You may be able to fly from Seattle to Cancún for 50% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Seattle to Cancún?

    No one likes to see their flight delayed. When booking a flight from Seattle to Cancún consider choosing Alaska Airlines (100%), Hawaiian Airlines (100%) or Delta (96%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Seattle to Cancún that include hotel bookings?

    Yes. In addition to deals on Seattle to Cancún flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Cancún?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Cancún.

  • Can I find deals for business class flights from Seattle to Cancún?

    Yes. Cheapflights offers flight deals from Seattle to Cancún by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Cancún?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 257). Flying from Seattle to Cancún in December is currently the most expensive (average of C$ 570). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Cancún?

Book flights to Cancún if you plan to visit one of these locations
Puerto Aventuras
Holbox
Punta Sam

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Top 3 airlines flying from Seattle to Cancún

Discover the top 3 airlines that operate flights from Seattle to Cancún. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 27 October 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 400AverageC$ 749FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
AeromexicoCheapestC$ 460AverageC$ 807FlexibilityNo cancel feeOn-timeN/A
Search Aeromexico flights
Alaska AirlinesCheapestC$ 553AverageC$ 767FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Cancún?

Cheapflights helps you search for flights from Seattle to Cancún via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Cancún?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Cancún by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Seattle to Cancún with no change fees?

Yes, we can. To see specific flights from Seattle to Cancún with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Cancún become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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