Flights to Peak to Peak Highway from Boise - $173

View $173 flight on Thu, Jul 24, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Boise to Peak to Peak Highway (BOI-FNL)

Prices were available within the past 7 days and start at $173 for one-way flights and $269 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, May 21 - Sun, May 25
BOI
Boise
FNL
Fort Collins
$269 Roundtrip, found 18 hours ago
$269
Roundtrip
found 18 hours ago
Select United flight, departing Wed, May 21 from Boise to Fort Collins, returning Sun, May 25, priced at $269 found 18 hours ago
United
Wed, May 21 - Sun, May 25
BOI
Boise
FNL
Fort Collins
$319 Roundtrip, found 18 hours ago
$319
Roundtrip
found 18 hours ago
Select United flight, departing Wed, May 21 from Boise to Fort Collins, returning Sun, May 25, priced at $319 found 18 hours ago
United
Wed, Jun 11 - Tue, Jul 1
BOI
Boise
FNL
Fort Collins
$324 Roundtrip, found 9 hours ago
$324
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Jun 11 from Boise to Fort Collins, returning Tue, Jul 1, priced at $324 found 9 hours ago
United
Wed, May 21 - Sun, May 25
BOI
Boise
FNL
Fort Collins
$324 Roundtrip, found 18 hours ago
$324
Roundtrip
found 18 hours ago
Select United flight, departing Wed, May 21 from Boise to Fort Collins, returning Sun, May 25, priced at $324 found 18 hours ago
United
Fri, Aug 1 - Sun, Aug 3
BOI
Boise
FNL
Fort Collins
$331 Roundtrip, found 4 hours ago
$331
Roundtrip
found 4 hours ago
Select United flight, departing Fri, Aug 1 from Boise to Fort Collins, returning Sun, Aug 3, priced at $331 found 4 hours ago
United
Sat, Jun 14 - Tue, Jul 1
BOI
Boise
FNL
Fort Collins
$335 Roundtrip, found 9 hours ago
$335
Roundtrip
found 9 hours ago
Select United flight, departing Sat, Jun 14 from Boise to Fort Collins, returning Tue, Jul 1, priced at $335 found 9 hours ago

Find the cheapest month to fly from Boise (BOI) to Denver (DEN)

May is typically the cheapest month to fly

From $132 - $357 per traveler.

Graph displaying average flight prices per month

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