Chicago to Longmont Flights (CHI-DEN) from $31

Wander Wisely with exceptional service, 24/7 support

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Selected fares from Chicago to Longmont

The cheapest prices found with in the last 7 days for return flights were $58 and $31 for one-way flights to Longmont for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 4 - Sat, May 11
MDW
Midway Intl.
DEN
Denver Intl.
$58 Roundtrip, found 1 day ago
$58
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, May 4 from Midway Intl. to Denver Intl., returning Sat, May 11, priced at $58 found 1 day ago
Frontier Airlines
Wed, May 8 - Tue, May 14
ORD
O'Hare Intl.
DEN
Denver Intl.
$58 Roundtrip, found 1 day ago
$58
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, May 8 from O'Hare Intl. to Denver Intl., returning Tue, May 14, priced at $58 found 1 day ago
Sun Country Airlines
Fri, May 3 - Mon, May 6
ORD
O'Hare Intl.
DEN
Denver Intl.
$101 Roundtrip, found 2 hours ago
$101
Roundtrip
found 2 hours ago
Select Sun Country Airlines flight, departing Fri, May 3 from O'Hare Intl. to Denver Intl., returning Mon, May 6, priced at $101 found 2 hours ago

Save more with Longmont Flight + Hotel packages

The Benson Hotel & Faculty Club

The Benson Hotel & Faculty Club

4 out of 5
Save 100% on your flight
per person
May 23 - May 27
Roundtrip flight included
Chicago (ORD) to Denver (DEN)
The Source Hotel

The Source Hotel

4 out of 5
Save 100% on your flight
per person
May 23 - May 27
Roundtrip flight included
Chicago (ORD) to Denver (DEN)
The Brown Palace Hotel and Spa, Autograph Collection

The Brown Palace Hotel and Spa, Autograph Collection

4.5 out of 5
Save 100% on your flight
per person
May 23 - May 27
Roundtrip flight included
Chicago (ORD) to Denver (DEN)
Renaissance Denver Central Park Hotel

Renaissance Denver Central Park Hotel

4 out of 5
Save 100% on your flight
per person
May 23 - May 27
Roundtrip flight included
Chicago (ORD) to Denver (DEN)
Renaissance Boulder FlatIron Hotel

Renaissance Boulder FlatIron Hotel

4 out of 5
per person
May 23 - May 27
Roundtrip flight included
Chicago (ORD) to Denver (DEN)
Staybridge Suites Denver Tech Center, an IHG Hotel

Staybridge Suites Denver Tech Center, an IHG Hotel

3 out of 5
per person
May 23 - May 27
Roundtrip flight included
Chicago (ORD) to Denver (DEN)
Don't see what you're looking for?
See all available trips from Chicago to Longmont
View all trips
Prices and availability subject to change. Additional terms may apply.