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Cheap flights from Seattle to Cancún from C$ 186

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 25/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CUN
11 Oct — 18 Oct1
1 adult
1 adult, Economy

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 11 September 2025.

Round-trip from

C$ 500

One-way from

C$ 186

Popular in

December

Cheapest in

September

Average price

C$ 667
Delta
  • Delta
  • 12/10-17/10
  • Nonstop
  • 12h 21m total
  • Seattle to Cancún
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Frontier
  • Frontier
  • 25/10
  • 1 total stop
  • 16h 21m total
  • Seattle to Cancún
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 81 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 32 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 11 September 2025.

Sun 12/107:24 a.m.SEA - CUN
Nonstop5h 46mDelta
Thu 16/104:10 p.m.CUN - SEA
Nonstop6h 35mDelta
Deal found 8/9C$ 500
Tue 21/105:25 a.m.SEA - CUN
1 stop7h 51mDelta
Thu 23/104:10 p.m.CUN - SEA
Nonstop6h 35mDelta
Deal found 11/9C$ 502
Sat 18/109:59 p.m.SEA - CUN
1 stop11h 26mDelta
Thu 23/104:10 p.m.CUN - SEA
Nonstop6h 35mDelta
Deal found 10/9C$ 506
Mon 20/107:24 a.m.SEA - CUN
Nonstop5h 46mDelta
Wed 29/101:49 p.m.CUN - SEA
1 stop12h 05mDelta
Deal found 11/9C$ 510
Mon 20/107:24 a.m.SEA - CUN
Nonstop5h 46mDelta
Mon 27/106:05 p.m.CUN - SEA
1 stop17h 58mDelta
Deal found 11/9C$ 514
Mon 6/1011:10 p.m.SEA - CUN
1 stop10h 52mUnited Airlines
Wed 15/102:24 p.m.CUN - SEA
1 stop9h 29mUnited Airlines
Deal found 10/9C$ 521
Mon 6/107:24 a.m.SEA - CUN
Nonstop5h 46mDelta
Fri 10/104:10 p.m.CUN - SEA
Nonstop6h 35mDelta
Deal found 10/9C$ 528
Mon 20/109:25 p.m.SEA - CUN
2 stops19h 25mDelta
Thu 23/107:05 a.m.CUN - SEA
1 stop14h 55mDelta
Deal found 11/9C$ 529
Sat 8/1110:05 p.m.SEA - CUN
1 stop12h 25mDelta
Tue 18/115:05 p.m.CUN - SEA
Nonstop6h 40mDelta
Deal found 11/9C$ 534
Sat 1/119:20 p.m.SEA - CUN
1 stop11h 25mAmerican Airlines
Sat 8/118:45 a.m.CUN - SEA
1 stop9h 46mAmerican Airlines
Deal found 10/9C$ 535
Sat 18/108:12 a.m.SEA - CUN
Nonstop6h 08mHawaiian Airlines
Thu 23/104:10 p.m.CUN - SEA
Nonstop6h 33mHawaiian Airlines
Deal found 10/9C$ 538
Tue 14/108:12 a.m.SEA - CUN
Nonstop6h 08mHawaiian Airlines
Wed 22/105:30 p.m.CUN - SEA
1 stop19h 29mHawaiian Airlines
Deal found 9/9C$ 542

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 11 September 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

Thu 22/1

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

Nonstop5h 55m

Cancun

Mon 26/1

5:25 p.m.-9:16 p.m.

Nonstop6h 51m

C$ 500

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sun 11/1

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

Nonstop5h 55m

Cancun

Sat 17/1

5:25 p.m.-9:16 p.m.

Nonstop6h 51m

C$ 500

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Fri 30/1

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

Nonstop5h 55m

Cancun

Tue 3/2

5:25 p.m.-9:16 p.m.

Nonstop6h 51m

C$ 500

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sat 18/10

9:59 p.m.-11:25 a.m.

1 stop11h 26m

Cancun

Thu 23/10

4:10 p.m.-8:45 p.m.

Nonstop6h 35m

C$ 506

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 21/10

5:25 a.m.-3:16 p.m.

1 stop7h 51m

Cancun

Thu 30/10

12:25 p.m.-11:54 p.m.

1 stop13h 29m

C$ 521

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Mon 20/10

9:59 p.m.-11:25 a.m.

1 stop11h 26m

Cancun

Wed 29/10

6:00 a.m.-8:50 p.m.

2 stops16h 50m

C$ 521

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 14/10

8:12 a.m.-4:20 p.m.

Nonstop6h 08m

Cancun

Wed 22/10

5:30 p.m.-10:59 a.m.

1 stop19h 29m

C$ 542

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Wed 1/10

7:05 a.m.-7:20 p.m.

1 stop10h 15m

Cancun

Sat 4/10

1:43 p.m.-11:15 p.m.

2 stops11h 32m

C$ 554

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 11/11

9:30 a.m.-12:18 a.m.

1 stop11h 48m

Cancun

Fri 14/11

11:17 a.m.-8:00 p.m.

1 stop11h 43m

C$ 556

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sat 18/10

3:40 p.m.-11:25 a.m.

1 stop17h 45m

Cancun

Sun 26/10

4:10 p.m.-8:45 p.m.

Nonstop6h 35m

C$ 561

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 20 results
1
2

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 29 August 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, April is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 298). Flying from Seattle to Cancún in July is currently the most expensive (average of C$ 464). 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 11 September 2025.

It’s typically best to fly out from Seattle to Cancún at noon. Doing so could potentially save you 60% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 11 September 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
10,000 reviews
Check prices

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Aeromexico
7.5
Good
1,701 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

  • How popular is this Seattle to Cancún flight route?

    The Seattle/Tacoma Intl to Cancun flight path was viewed by 77 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$ 396, 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 Delta (93%), Korean Air (93%) or Aeromexico (65%) 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, April is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 298). Flying from Seattle to Cancún in July is currently the most expensive (average of C$ 464). 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

Browse thousands of different options on Cheapflights for your next trip

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Other flights to Cancún

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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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 396AverageC$ 739FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
AeromexicoCheapestC$ 455AverageC$ 799FlexibilityNo cancel feeOn-timeN/A
Search Aeromexico flights
Alaska AirlinesCheapestC$ 548AverageC$ 765FlexibilityNo 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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