Cheap flights from Knoxville to Boise

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Flight deals from Knoxville Airport to Boise Airport

Looking for a cheap last-minute deal or the best return flight from Knoxville Airport to Boise Airport? If you want to travel next month, return fares start from $477. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Knoxville to Boise

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Knoxville to Boise flights are currently cheapest in May.

Knoxville to Boise: Alternative routes

Compare routes from Knoxville to Boise below. You may find an airport to fly into that's cheaper, faster, or easier than Boise.

Knoxville to Boise: Flight information

The things to know before you go.
Cheapest flight found$369
Cheapest month to flyMay

Finding cheap flights from Knoxville to Boise: Frequently asked questions

The best price we found for a return flight from Knoxville to Boise is $477. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Knoxville to Boise. But we found flights with one or more stops from $477.
As of March 2026, there are no flights flying from Knoxville to Boise.
The cheapest month to fly from Knoxville to Boise is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Knoxville Airport to Boise Airport on Saturday, 18 April 2026.
No airlines currently offer direct flights between Knoxville Airport and Boise Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Boise but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Boise is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to Boise.

Flying from McGhee Tyson Airport (TYS) to Boise Air Terminal (Gowen Field) Airport (BOI): what you need to know

  • Leave plenty of time to make your TYS to BOI flight. As a general rule, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • You can expect longer queues during popular months like July. Arriving up to four hours ahead of an international flight and two hours for domestic departures will help ensure a smooth travel experience.

How to find the cheapest flights from McGhee Tyson Airport (TYS) to Boise Air Terminal (Gowen Field) Airport (BOI)

  • The lowest price we've seen for a one-way McGhee Tyson Airport to Boise Air Terminal (Gowen Field) Airport flight is $369. A round-trip plane ticket right now is $477. Depending on the availability when you book, these fares could change.

  • It's a good idea to book early if you want to find cheap tickets from TYS to BOI. That's because flight prices are based on demand, which tends to rise closer to the date of departure.

  • If you're flexible with your travel plans, use the 'Whole month' tool. It'll show you the lowest price across every month when searching for a flight from McGhee Tyson Airport to Boise Air Terminal (Gowen Field) Airport.

  • You won't have to check back in every day to see if fares have dropped when you set up a Price Alert. We'll update you as soon as the price changes on cheap flights from TYS to BOI.

  • Discover the perfect flight for you by using the filters. To see the 'Fastest,' 'Best' or 'Cheapest' flights from McGhee Tyson Airport to Boise Air Terminal (Gowen Field) Airport, use the 'Sort by' function. You can also filter by airline, arrival and departure times, and journey duration.

Handy information about McGhee Tyson Airport (TYS)

  • TYS is located at 2055 Alcoa Highway.

  • Of all flights departing from McGhee Tyson Airport, 78.98% land on time at their destination.

  • To reach McGhee Tyson Airport from central Knoxville, it'll take around 20 minutes if you're travelling by car. Of course, this depends on traffic. It's approximately 23 kilometres from the airport to the city centre.

  • Get your journey off to a relaxed start by staying near TYS. Whether you're taking an early flight from McGhee Tyson Airport to Boise Air Terminal (Gowen Field) Airport or want to avoid feeling rushed, these stays have you covered:

Arriving at Boise Air Terminal (Gowen Field) Airport (BOI)

  • If you're getting in on a late McGhee Tyson Airport to Boise Air Terminal (Gowen Field) Airport flight, few things beat the convenience of staying close to the terminal. Grab your luggage from the carousel and then be tucked up in bed not long after at one of these hotels near BOI:

  • Pick up a Boise Air Terminal (Gowen Field) Airport rental car and explore Boise and beyond with your own wheels. Budget, Alamo and Avis are top providers you can book with here.

  • Booking your ride from Boise Air Terminal (Gowen Field) Airport around one week in advance gives you the best chance of locking in a great deal.

Getting from Boise Air Terminal (Gowen Field) Airport (BOI) to central Boise

  • The address for BOI is 3201 Airport Way.

  • Boise Air Terminal (Gowen Field) Airport to the centre of Boise has a drive time of about 20 minutes. It's approximately 18 kilometres away.

  • Travelling by public transport takes about 1 hour 35 minutes.

When to fly to Boise Air Terminal (Gowen Field) Airport (BOI)

  • It's time to pick your dates for your flight from McGhee Tyson Airport to Boise Air Terminal (Gowen Field) Airport. July is the busiest month to head to Boise. If you'd like a more laid-back vibe, go in May.

  • Lock in your flight from McGhee Tyson Airport to Boise Air Terminal (Gowen Field) Airport for July if you'd like to visit Boise during its warmest month. You can expect temperatures of between 15ºC (59ºF) and 35ºC (95ºF).

  • January has average temperatures of between -11ºC (12ºF) and 5ºC (41ºF). Look for cheap tickets from TYS to BOI around that time if you want to travel when it's cooler.

Explore more of United States

  • Boise is easy to fall in love with, but there are so many other corners of United States waiting to be discovered. About 467 kilometres north of Boise, a trip to Spokane will keep you on the go. Start with popular sights like Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

  • If you're interested in discovering another major stop in United States, head for Salt Lake City, roughly 483 kilometres south-east of Boise. Temple Square, Utah State Capitol and Red Butte Garden are among the biggest draws.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.