Open interactive map →Cheap flights from Seattle to Boise
Planning a trip from Seattle to Boise? Current fares start at €74 - a solid entry point for a flight to United States. Several airlines compete on this route, which helps keep fares relatively stable. The cheapest fare is non-stop, so no connection time to factor into your schedule. Use the price calendar to identify your cheapest month, then click through to compare live seat availability.
Prices to Boise are typically lowest in the shoulder months shown in the calendar above. Searching for mid-week flights and avoiding school holiday windows can meaningfully cut costs on this route. If you're open on destination, use the interactive map from Seattle to compare Boise against nearby alternatives - you may find a cheaper fare to a similar destination.
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Cheapest month to fly
- October 2026€74DirectCheapest
Based on tracked fares, October is the cheapest month to fly this route at around €74.
Prices last updated: September 2026
Entry requirements for United States
EU passportESTA required (visa-waiver)
US passportN/A (domestic)
Requirements vary by nationality and change without notice. Check requirements for your nationality →
Alternative routes
Other ways to reach Boise
Frequently asked questions
How much does a flight from Seattle to Boise cost?
The cheapest fare currently available from Seattle to Boise is €74. Prices on this route vary by season, day of week, and how far in advance you book. The month-by-month price calendar on this page shows exactly when fares are highest and lowest, so you can pick the most cost-effective window before searching for specific dates. Fares are refreshed regularly as our flight partners publish new availability.
Are there direct flights from Seattle to Boise?
Yes - non-stop flights are currently available from Seattle to Boise. The cheapest direct fare starts at €74, making it a convenient option if you want to avoid layover time. Direct flights are generally quicker and less stressful, especially for shorter trips to United States. Click through to the booking site to check live availability and schedules for your dates.
When is the cheapest time to fly from Seattle to Boise?
Prices on this route typically dip during shoulder-season months, away from school holidays and public holiday windows. Mid-week departures - particularly Tuesday to Thursday - tend to be cheaper than flights on Fridays and Sundays from Seattle. The month-by-month price calendar above is the fastest way to identify the cheapest window - look for the months with the lowest fares before committing to travel dates. Booking 3-6 weeks in advance generally offers the best balance of price and seat availability on this route.