Cheap Flights to Frontier County from $99

The cheapest month to fly to Frontier County is October when there's less demand. Off-peak months are usually when you'll find cheap fares. To keep costs down, steer clear of flying during school breaks and major holidays.

Generally, Chicago, Phoenix and Dallas offer cheap flights to Frontier County. However, being flexible is the secret to scoring yourself the best prices. Head off midweek or during the low season to keep costs down.

Pick from 164 US destinations providing direct flights to Frontier County. When booking on Expedia, check the "Direct flights only" box to compare nonstop itineraries. Fly to Frontier County from any of these leading cities:

• Chicago
• Phoenix
• Dallas
• Las Vegas
• Salt Lake City

Book your trip early to increase your chances of finding cheap flights to Frontier County. Also, consider traveling during off-season months like April and May. If you jet off on a Thursday, you'll save 16% on average compared to departing on a Sunday.* Save time checking every day and create a price alert on the Expedia app. We'll let you know when fares change.

*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.

While booking in advance is usually the easiest way to save cash, don't worry if your Frontier County trip is last minute. You can still get cheap flights to Frontier County, especially if your plans have a little leeway. Try switching up your travel dates, looking at different ticket options or jetting out of an alternative airport.

For the best deals on domestic journeys, book your flight to Frontier County 28 days ahead of your travel dates. For international flights, search for your ticket between two and four months in advance. This improves your chances of getting the departure dates and seats you want.*

*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.

You'll save an average of 8% if you purchase plane tickets on a Sunday rather than Fridays, which tend to be the most expensive day to book.* When it comes to getting a cheap flight to Frontier County, it's all about having good timing.

*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.

Making your way to Frontier County is as easy as choosing between two well-known airlines. Book your airfare with either of these options:

• United Airlines - 13,169 flights to Frontier County each month, including 13,169 flights to Denver Intl. Airport (DEN) per month.
• Frontier Airlines - 2,184 flights to Frontier County each month, including 2,184 flights to Denver Intl. Airport (DEN) per month.

You could potentially save hundreds of dollars if you secure a Frontier County flight and hotel package deal on Expedia. And you'll make life easier by having all your travel plans in one place. Try bundling flights and hotels with extras like car rentals and activities for your own customized Frontier County escape.

You can usually change or cancel your flight to Frontier County within 24 hours of booking. However, be mindful that some fares are non-refundable. In those cases, you may be issued credit for a future trip in place of a direct refund. Make sure you check the airline's terms and conditions in your itinerary for exact details. You can use Expedia's "No cancel fee" or "Changes included" filters when you search to secure cheap flights to Frontier County with flexible change policies. For additional information, browse our Customer Service Portal.