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

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $348 (Booking.com) |
One-way from | $121 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $481 |
Good round-trip deal | $444 or less |
Good one-way deal | $295 or less |
Fly from
Fly to
Route
Depart
Return
Price
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Mon 3/16
7:15 am-3:17 pm
Nonstop6h 02m
Cancun
Wed 3/18
4:17 pm-9:03 pm
Nonstop6h 46m
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Wed 3/11
7:15 am-3:16 pm
Nonstop6h 01m
Cancun
Thu 3/19
4:17 pm-9:03 pm
Nonstop6h 46m
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Tue 3/17
7:15 am-3:17 pm
Nonstop6h 02m
Cancun
Thu 3/19
4:17 pm-9:03 pm
Nonstop6h 46m
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Mon 3/16
7:15 am-3:17 pm
Nonstop6h 02m
Cancun
Thu 3/19
6:01 am-7:55 pm
1 stop15h 54m
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Fri 3/13
7:35 pm-1:40 pm
1 stop16h 05m
Cancun
Wed 3/18
8:40 am-7:55 pm
1 stop13h 15m
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Sat 2/28
10:20 pm-1:30 pm
1 stop12h 10m
Cancun
Sat 3/7
12:05 pm-7:38 pm
1 stop10h 33m
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Mon 3/16
9:41 pm-2:59 pm
2 stops39h 18m
Cancun
Tue 3/24
5:15 pm-11:02 am
1 stop19h 47m
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Tue 3/17
5:50 pm-2:59 pm
1 stop19h 09m
Cancun
Tue 3/24
5:15 pm-11:02 am
1 stop19h 47m
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Tue 4/14
8:04 am-4:05 pm
Nonstop6h 01m
Cancun
Wed 4/22
5:30 pm-11:52 am
1 stop20h 22m
SeattleCancún
SEA - CUN
SEACUN
Seattle/Tacoma Intl
Tue 3/10
3:52 pm-2:50 pm
2 stops20h 58m
Cancun
Tue 3/24
5:15 pm-11:02 am
1 stop19h 47m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
Booking 6 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.
Currently, August is the cheapest month in which you can book a flight from Seattle to Cancún (average of $184). Flying from Seattle to Cancún in June is currently the most expensive (average of $328). 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.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Cancún as you normally would.
Comfort
Boarding
Entertainment
Crew
Food
Overall
Reviews
Anonymous,Dec 2025
SEA - MSY
Comfort
Boarding
Entertainment
Crew
Food
Overall
Reviews
Anonymous,Dec 2025
SEA - MSY
Comfort
Boarding
Entertainment
Crew
Food
Overall
Reviews
Anonymous,Dec 2025
SEA - MSY
Comfort
Boarding
Entertainment
Crew
Food
Overall
Reviews
Anonymous,Dec 2025
SEA - MSY
Comfort
Boarding
Entertainment
Crew
Food
Overall
Reviews
Anonymous,Dec 2025
SEA - MSY
Comfort
Boarding
Entertainment
Crew
Food
Overall
Reviews
Anonymous,Dec 2025
SEA - MSY
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$211 | Average$445 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$235 | Average$544 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$270 | Average$439 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$289 | Average$603 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$310 | Average$784 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$342 | Average$591 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$391 | Average$551 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$406 | Average$634 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$408 | Average$643 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$433 | Average$577 | FlexibilityNo cancel fee | On-time63% |