Seattle-Tacoma to Cancún International
2685 miles great-circle distance, typically flown in 5h 48m with 8 airlines operating direct service from Seattle-Tacoma (SEA) to Cancún International (CUN). Cheapest fares are usually in January (around $249 return), with peak prices in August (around $747). Departures on a Tuesday tend to undercut weekend prices on this corridor.
Flying from Seattle-Tacoma
Seattle-Tacoma is Alaska Airlines' principal hub and Delta's growing Pacific Northwest base. The Link Light Rail Red Line runs from the airport's elevated station directly to Westlake in downtown Seattle in 38 minutes for $3.25 — possibly the easiest big-city transfer in the country. International long-haul has expanded sharply post-2023 with new direct service to Tokyo, Seoul, Frankfurt, London Heathrow and Auckland. Weather delays are rare; SEA is one of the most operationally reliable winter airports in the US.
Arriving in Cancún
Cancún International is 16 km south of Cancún's hotel zone. ADO bus runs direct to the centre and the Riviera Maya for 110–230 MXN; private resort transfers cost $40–$80 per person. The route from the US is one of the busiest international corridors in the world, with daily fares from any major US hub. Hurricane season (June–November) brings cheaper fares and fewer crowds; peak demand is Christmas, spring break and US Thanksgiving.
Who flies SEA to CUN?
| Airline | IATA | Flight time | Cabin |
| Alaska Airlines | AS | 5h 48m | Economy |
| Delta Air Lines | DL | 5h 48m | Economy |
| Southwest Airlines | WN | 5h 48m | Economy |
| American Airlines | AA | 5h 48m | Economy |
| United Airlines | UA | 5h 48m | Economy |
| JetBlue Airways | B6 | 5h 48m | Economy |
| Spirit Airlines | NK | 5h 48m | Economy |
| Hawaiian Airlines | HA | 5h 48m | Economy |
8 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly SEA→CUN
Synthesised from 12-month price aggregates. Cheapest months in green, peak in red.
Estimated baseline. Prices update on a 30-day cadence as Travelpayouts data refreshes. Cheapest day-of-week typically Tuesday.
Seattle to Cancún FAQs
Direct flights from Seattle-Tacoma (SEA) to Cancún International (CUN) take approximately 5h 48m for the 2685-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
January is typically the cheapest month on this route, with one-way fares from $249. August is the peak — expect prices 2–3× higher. Book 4–8 weeks ahead for best fares; last-minute prices on this corridor rise sharply inside two weeks of departure.
8 carriers operate direct service from Seattle-Tacoma (SEA) to Cancún International (CUN): Alaska Airlines, Delta Air Lines, Southwest Airlines, American Airlines, United Airlines and 3 more. Frequencies vary by season and carrier — Alaska Airlines typically operates the highest weekly count on this corridor.
No visa required for US passport holders for stays up to 180 days. FMM tourist card included with airfare and issued at arrival. Always check travel.state.gov for the latest entry requirements before booking.
Cancún International (CUN) is the primary international airport for Cancún. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.