AirHint found the following cheapest one-way flights from Seattle (SEA) to Guatemala City (GUA) in December 2025 (see full year).
One-Way flights
| 05 Dec | Frontier Airlines | ||
| 30 Dec | Alaska Airlines | ||
| 25 Dec | Alaska Airlines | ||
| 20 Dec | Sun Country Airlines |
Also check the deals for return flights from Seattle to Guatemala City in December.
Powered by
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
Find us on social media