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$139+ Cheap flights from Seattle (SEA) to Cancún (CUN)

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CUN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Cancun are usually found in September or October, booked 29 days in advance, depart on a Tuesday or Monday and return on a Sunday

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 June 12, 2025.

Round-trip from

$343
(Delta)

One-way from

$139
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$616

Good round-trip deal

$437 or less

Good one-way deal

$176 or less
From Seattle/Tacoma Intl to Cancun
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One-way flight from Seattle/Tacoma Intl to Cancun
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Highest demand for flights based on searches. 5% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Cancun.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Cancun.
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Find flight deals from Seattle to Cancún

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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:20 amSEA - CUN
2 stops14h 43mDelta
Sun 10/264:15 pmCUN - SEA
Nonstop6h 30mDelta
Deal found 6/11$343
This Alaska Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/218:12 amSEA - CUN
Nonstop6h 08mAlaska Airlines
Thu 10/234:10 pmCUN - SEA
Nonstop6h 33mAlaska Airlines
Deal found 6/11$359
This Priceline deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/86:25 amSEA - CUN
1 stop7h 55mFrontier
Mon 8/183:25 pmCUN - SEA
1 stop11h 09mFrontier
Deal found 6/10$368
This SmartFares deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/117:20 amSEA - CUN
Nonstop5h 55mAeromexico
Wed 7/164:20 pmCUN - SEA
1 stop9h 39mAeromexico
Deal found 6/11$371
This Priceline deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/115:30 pmSEA - CUN
2 stops15h 50mMultiple Airlines
Wed 7/163:25 pmCUN - SEA
1 stop10h 17mMultiple Airlines
Deal found 6/11$386
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/83:58 pmSEA - CUN
2 stops17h 22mSpirit Airlines
Tue 7/159:13 amCUN - SEA
3 stops33h 12mSpirit Airlines
Deal found 6/11$408
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1611:59 pmSEA - CUN
1 stop13h 21mAmerican Airlines
Sat 8/233:00 pmCUN - SEA
1 stop10h 40mAmerican Airlines
Deal found 6/10$433
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/176:45 amSEA - CUN
1 stop30h 21mUnited Airlines
Sat 8/305:22 pmCUN - SEA
1 stop29h 56mUnited Airlines
Deal found 6/11$444
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/218:12 amSEA - CUN
Nonstop6h 08mHawaiian Airlines
Sun 10/264:00 pmCUN - SEA
Nonstop6h 35mHawaiian Airlines
Deal found 6/10$459
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/35:00 amSEA - CUN
1 stop14h 00mSouthwest
Mon 7/78:15 amCUN - SEA
1 stop13h 00mSouthwest
Deal found 6/11$536

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 2,558,603 searches. Data last updated June 12, 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

Tue 10/21

7:20 am-12:03 am

2 stops14h 43m

Cancun

Sun 10/26

4:15 pm-8:45 pm

Nonstop6h 30m

$343

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 10/21

8:12 am-4:20 pm

Nonstop6h 08m

Cancun

Thu 10/23

4:10 pm-8:43 pm

Nonstop6h 33m

$359

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Fri 8/8

6:25 am-4:20 pm

1 stop7h 55m

Cancun

Mon 8/18

3:25 pm-12:34 am

1 stop11h 09m

$368

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Fri 7/11

7:20 am-3:15 pm

Nonstop5h 55m

Cancun

Wed 7/16

4:20 pm-11:59 pm

1 stop9h 39m

$371

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Fri 7/11

5:30 pm-11:20 am

2 stops15h 50m

Cancun

Wed 7/16

3:25 pm-11:42 pm

1 stop10h 17m

$386

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 7/8

3:58 pm-11:20 am

2 stops17h 22m

Cancun

Tue 7/15

9:13 am-4:25 pm

3 stops33h 12m

$408

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sat 8/16

11:59 pm-3:20 pm

1 stop13h 21m

Cancun

Sat 8/23

3:00 pm-11:40 pm

1 stop10h 40m

$433

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sun 8/17

6:45 am-3:06 pm

1 stop30h 21m

Cancun

Sat 8/30

5:22 pm-9:18 pm

1 stop29h 56m

$444

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 10/21

8:12 am-4:20 pm

Nonstop6h 08m

Cancun

Sat 10/25

5:30 pm-11:07 am

1 stop19h 37m

$471

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Thu 7/3

5:00 am-9:00 pm

1 stop14h 00m

Cancun

Mon 7/7

8:15 am-7:15 pm

1 stop13h 00m

$536

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 23 results
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The best insider tips for Seattle to Cancún flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-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.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Cancún trip
Airports
SEA

Plan to arrive at SEA at least two hours before your flight. Use SEA Spot Saver for security screening appointments to reduce wait times.

Read more about SEAby Brandon Schultz
CUN

For a smooth arrival at CUN, arrange hotel transfers in advance to avoid taxi scams and confusion at the airport.

Read more about CUNby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on CUN

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

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 June 9, 2025.

Booking 29 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Cancún. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Cancún (average of $360). Flying from Seattle to Cancún in March is currently the most expensive (average of $492). 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 June 12, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 61% on flights from Seattle to Cancún by exploring options for tickets in the afternoon.

Weekly flight availability from Seattle to Cancún

Explore weekly flight availability from Seattle to Cancún. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from SEA to CUN are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Cancún by month

Plan your trip to Cancún by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Cancún ranges from 1.1 - 11.1 inches per month. October is typically the wettest month, when rainfall can reach 11.1 in. April is typically the driest time to visit Cancún when rainfall is around 1.1 in.

Temperature in Cancún by month

Plan your trip to Cancún by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Cancún, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 75.2 F).

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 June 12, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Seattle to Cancún by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Aeromexico
7.5
Good
1,706 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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?

    To fly from Seattle to Cancún, you need to book a flight from Seattle/Tacoma Intl (SEA) to Cancun (CUN). Nonstop flights to Cancun from Seattle/Tacoma Intl take 5h 45m on average. When it comes time to book airfare, you have a few options: there are 3 outbound flights from Seattle/Tacoma Intl to Cancun offered by 11 different airlines.

  • How popular is this Seattle to Cancún flight route?

    Within the past month, 26 users have taken a look at flights from Seattle/Tacoma Intl to Cancun.

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

    Delta, at $343, was found to be the cheapest airline from Seattle to Cancún.Alternate airlines to your destination round-trip include Alaska Airlines and Frontier. Delta is priced at 40% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Cancún one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $139. Frontier flights start at $144 while deals on Spirit Airlines start at $147 one-way.

  • 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 Delta (95%), Korean Air (95%) or Aeromexico (95%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Cancún?

    On average you can expect to pay $740 for a flight from Seattle to Cancún. The cheapest flight overall is $176 while the most popular route, (Seattle/Tacoma Intl - Cancun) is currently priced at $339.

  • 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, January is the cheapest month in which you can book a flight from Seattle to Cancún (average of $360). Flying from Seattle to Cancún in March is currently the most expensive (average of $492). 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

Traveling to a place near Seattle?

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Top 10 airlines flying from Seattle to Cancún

Discover the top 10 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$127Average$425FlexibilityNo cancel feeOn-time65%
FrontierCheapest$270Average$468FlexibilityNo cancel feeOn-time62%
AeromexicoCheapest$286Average$577FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$290Average$604FlexibilityNo cancel feeOn-time85%
VolarisCheapest$308Average$538FlexibilityNo cancel feeOn-time79%
Air CanadaCheapest$349Average$695FlexibilityNo cancel feeOn-time67%
DeltaCheapest$382Average$591FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$404Average$604FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$404Average$620FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$439Average$653FlexibilityNo cancel feeOn-time71%

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